Manitowoc ICVD3095 Technician'S Handbook Download Page 167

Page: 167 / 350

Part Number Preliminary 6/11

167

FREEZE CYCLE DISCHARGE PRESSURE
HIGH CHECKLIST

Improper Installation

•

Refer to “Installation/Visual Inspection Checklist”

(page 162)

Air Condenser

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Dirty condenser filter

•

Dirty condenser fins

•

High inlet air temperature

•

Condenser discharge air recirculation

•

Defective fan cycling control (page 273)

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Defective fan motor

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Defective head pressure control valve {Remote}

Water Condenser

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Low water pressure [20 psig (138 kPa) min.]

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High inlet water temperature (90°F/32°C max.)

•

Dirty condenser

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Dirty/Defective water regulating valve

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Water regulating valve out of adjustment

Other

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Overcharged

•

Non-condensable (air) in system

•

Wrong type of refrigerant

•

Non-Manitowoc components in system

•

High side refrigerant lines/component restricted

Summary of Contents for ICVD3095

Page 1: ...l is updated as new information and models are released Visit our website for the latest manual www manitowocice com America s 1 Selling Ice Machine Indigo Series Ice Machines Preliminary Manual Part Number Preliminary 6 11 Manitowoc ...

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Page 3: ...st you as you work Throughout this handbook you will see the following types of procedural notices Warning Text in a Warning box alerts you to a potential personal injury situation Be sure to read the Warning statement before proceeding and work carefully Caution Text in a Caution box alerts you to a situation in which you could damage the equipment Be sure to read the Caution statement before pro...

Page 4: ...covered by this handbook do not proceed contact Manitowoc Foodservice We will be happy to provide assistance Important Routine adjustments and maintenance procedures outlined in this handbook are not covered by the warranty Warning PERSONAL INJURY POTENTIAL Do not operate equipment that has been misused abused neglected damaged or altered modified from that of original manufactured specifications ...

Page 5: ...mited Warranty 21 Installation Stacking Two Ice Machines on a Single Storage Bin 27 Ice Deflector 27 Location of Ice Machine 28 Head Section 28 Ice Beverage Models 29 Location of ICVD Condensing Units 30 Clearance Requirements 31 Air Water Remote Condenser Models 31 QuietQube Models 32 Ice Machine Heat of Rejection 33 I1470C I1870C I2170C Installation on a Manitowoc Bin 34 Ice Machine on a Dispens...

Page 6: ...rocedure 51 Preventative Maintenance Cleaning Proce dure 51 Exterior Cleaning 51 Cleaning Sanitizing Procedure 52 Cleaning Procedure 52 Sanitizing Procedure 55 Parts Removal for Cleaning Sanitizing 58 Removal from Service Winterization 70 Air Cooled Ice Machines 70 Water Cooled Ice Machines 71 Operation Control Panel Features 73 Buttons 73 Display Panel 74 Menu Navigation Overview 75 Display Panel...

Page 7: ...er 91 Ice Program 92 Statistics 92 Service Menu 93 Data History 94 Real Time Data 95 Diagnostics 97 Manual Harvest 98 Replace Control Board 98 Press the Checkmark with Replace Control Board highlighted to program the replace ment control board The data can copied from the defective control board or entered manually 98 USB Setup 98 Event Log Menu 99 Event Log 100 Upgrading Firmware with a Flash Dri...

Page 8: ...afety Limits 133 Analyzing Why a Safety Limit Stopped the Ice Machine 134 Safety Limit 1 135 Safety Limit 2 136 Troubleshooting By Symptom 139 Symptom 1 Ice Machine will not run 141 Diagnosing a Condensing Unit That Will Not Run 145 Compressor Electrical Diagnostics 146 Symptom 2 Self contained Air Water Remote Condenser Models 148 Symptom 2 Freeze Cycle Refrigeration System Operational Analysis T...

Page 9: ...219 Symptom 4 QuietQube Models With ICVD Condensing Units 223 Component Check Procedures Electrical Components 227 Control Board Display board and Touch Pad 227 Control Board Relay Test 230 Upgrading Firmware with a Flash Drive or Transferring Setup Data To Multiple Ma chines 231 Exporting Data to a Flash Drive 233 Main Fuse 235 Bin Switch 236 Water Level Control Circuitry 239 Ice Thickness Probe ...

Page 10: ...ndensing Unit 275 Refrigerant Recovery Evacuation 276 Self Contained Model Procedure 276 Remote Condenser Model Procedure 280 QuietQube Models 286 Connections 287 Recovery Evacuation Procedures 289 Charging Procedures 290 System Contamination Clean Up 292 Determining Severity Of Contamination 292 Cleanup Procedure 294 Replacing Pressure Controls Without Re moving Refrigerant Charge 297 Liquid Line...

Page 11: ... I0870C 327 I1000 Series 328 I1200 Series 333 Diagrams Wiring Diagrams 335 Wiring Diagram Legend 335 I0300 I0320 I0450 I0500 I0520 336 I0500 337 I0600 I0850 I1000 I1200 338 I0600 I0850 I1000 339 I0670C I0870C I1070C I1270C 340 IB0690C IB0890C IB1090C 341 I1400 I1800 342 I1400 I1800 343 Electronic Control Board 344 Refrigeration Tubing Schematics 345 Self Contained Air or Water Cooled 345 Remote Co...

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Page 13: ...te Condensing Unit 9 Remote Air Cooled Condenser OR 9 Ice Beverage Remote Condensing Unit ICE CUBE SIZE R Regular D Dice Y Half Dice Not Used On IB Models Ice Machine Series CONDENSER TYPE A Self Contained Air Cooled W Self Contained Water Cooled N Remote Air Cooled C CVD Air Cooled DC IB Dice Model YC IB Half Dice 3 Three Phase E WRAS 50 Cycle Only NO INDICATOR 1 Phase VOLTAGE 161 115 60 1 261 20...

Page 14: ...ent that has been misused abused neglected damaged or altered modified from that of original manufactured specifications This appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision concerning use of the appliance by a person responsible for their safety ICVD 149...

Page 15: ...on the OWNER WARRANTY REGISTRATION CARD They are also listed on the MODEL SERIAL NUMBER DECAL affixed to the front and rear of the ice machine Warning All Manitowoc ice machines require the ice storage system bin dispenser etc to incorporate an ice deflector Prior to using a non Manitowoc ice storage system with other Manitowoc ice machines contact the manufacturer to assure their ice deflector is...

Page 16: ... IY0324A ID0323W IY0325W IR0520A ID0522A IY0524A IR0421W ID0423W IY0425W ID0452A IY0454A ID0453W IY0455W IR0500A ID0502A IY0504A IR0501W ID0503W IY0505W IR0590N ID0592N IY0594N ID0602A IY0604A ID0603W IY0605W ID0692N IY0694N IR0850A ID0852A IY0854A IR0851W ID0853W IY0855W IR0890N ID0892N IY0894N ID1002A IY1004A ID1003W IY1005W ID1092N IY1094N ID1202A IY1204A ID1203W IY1205W ID1402A IY1404A ID1403W...

Page 17: ... Machine Head Section ICVD Condensing Unit ID0682C IY0684C IB0694YC ICVD0695 ID0872C IY0874C IB0894YC ICVD0895 ID1072C IY1074C ICVD1095 IB1094YC ICVD1195 ID1472C IY1474C ICVD1495 ID1872C IY1874C ICVD1895 ID2172C IY2174C ICVD2095 ID3072C IY3074C ICVD3095 ...

Page 18: ...lled If the OWNER WARRANTY REGISTRATION CARD is not returned Manitowoc will use the born on date recorded in the control board or the date of sale to the Manitowoc Distributor as the first day of warranty coverage for your new ice machine Important Complete and mail the OWNER WARRANTY REGISTRATION CARD as soon as possible to validate the installation date ...

Page 19: ...is warranty is limited to the repair or replacement of parts components or assemblies that in the opinion of the COMPANY are defective This warranty is further limited to the cost of parts components or assemblies and standard straight time labor charges at the servicing location Time and hourly rate schedules as published from time to time by the COMPANY apply to all service procedures Additional...

Page 20: ...ations in writing THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES OR GUARANTEES OF ANY KIND EXPRESSED OR IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE In no event shall the COMPANY be liable for any special indirect incidental or consequential damages Upon the expiration of the warranty period the COMPANY S liability under this warranty shall termin...

Page 21: ...all be free of defects in material or workmanship for the warranty period outlined below under normal use and maintenance and upon proper installation and start up in accordance with the instruction manual supplied with the Product HOW LONG DOES THIS LIMITED WARRANTY LAST WHO IS COVERED BY THIS LIMITED WARRANTY This limited warranty only applies to the original consumer of the Product and is not t...

Page 22: ...the balance of the original warranty period whichever is longer The foregoing constitutes Manitowoc s sole obligation and the consumer s exclusive remedy for any breach of this limited warranty Manitowoc s liability under this limited warranty is limited to the purchase price of Product Additional expenses including without limitation service travel time overtime or premium labor charges accessing...

Page 23: ...nstalled and or maintained in accordance with the instruction manual or technical instructions provided by Manitowoc To the extent that warranty exclusions are not permitted under some state laws these exclusions may not apply to you EXCEPT AS STATED IN THE FOLLOWING SENTENCE THIS LIMITED WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY OF MANITOWOC WITH REGARD TO THE PRODUCT ALL IMPLIED WARRANTIES ARE...

Page 24: ...ONTRACT TORT OR ANY OTHER THEORY OF LIABILITY Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you HOW STATE LAW APPLIES This limited warranty gives you specific legal rights and you may also have rights that vary from state to state or from one jurisdiction to another REGISTRATION CARD To secure promp...

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Page 27: ...lector is required for all ice machines installed on a bin Warning PERSONAL INJURY POTENTIAL Remove all ice machine panels before lifting Warning I1470C I1870C I2170C ice machines are not approved for use on Manitowoc B570 bins Caution The ice machine head section must be protected if it will be subjected to temperatures below 32 F 0 C Failure caused by exposure to freezing temperatures is not cov...

Page 28: ... Water Inlet Water Pressure must be at least 20 psi 1 38 bar but must not exceed 80 psi 5 52 bar Condenser Water Inlet Water Pressure must be at least 20 psi 1 38 bar but must not exceed 150 psi 10 34 bar I3300W HP units allow water pressure up to 350 psig 24 13 bar The location must not be near heat generating equipment or in direct sunlight and protected from weather The location must not obstru...

Page 29: ...tion of the ice machine Maintain a 3 space between the back of the ice machine and the back of the dispenser to allow room for the refrigeration line set service loop The water inlet and electrical connection must contain a service loop to allow future service and maintenance access The drain line must contain a union or other suitable means of disconnection at the ice machine head section The loc...

Page 30: ...ICVD1495 ICVD1895 ICVD2195 Only The air temperature must be at least 20 F 28 9 C but must not exceed 130 F 54 4 C ICVD695 ICVD1195 ICVD2195 ICVD3095 Only The air temperature must be at least 20 F 28 9 C but must not exceed 120 F 48 9 C The location must not allow exhaust fan heat and or grease to enter the condenser The location must not obstruct airflow through or around the condensing unit See b...

Page 31: ...r Cooled and Remote Top Sides 12 30 5 cm 8 20 3 cm Back 5 12 7 cm 5 12 7 cm I0520 Tropical Rating Top 24 61 cm N A Sides back 12 30 5 cm N A I1400 I1800 Self Contained Air Cooled Water Cooled and Remote Top Sides 24 61 0 cm 8 20 3 cm Back 12 30 5 cm 5 12 7 cm There is no minimum clearance required for water cooled or remote ice machines This value is recommended for efficient operation and servici...

Page 32: ...s 5 12 7 cm 48 122 cm Back Connections Out Top 3 7 6 cm N A Front 24 61 0 cm I3070C Ice Machine Head Section ICVD Condensing Unit Top 8 20 3 cm 0 0 cm Sides 8 20 3 cm 0 0 cm Back 24 61 0 cm 24 61 0 cm Front 24 61 0 cm Ice Beverage Models IB0690C IB0890C IB1090C Ice Machine Head Section ICVD Condensing Unit Top 2 5 1 cm 0 0 cm Sides 8 20 3 cm 0 0 cm Back 5 12 7 cm 48 122 cm Front 48 122 cm 6 15 2 c...

Page 33: ...300 4600 5450 I0320 3800 6000 I0450 5400 6300 I0500 6100 6900 I0520 5300 6100 I0600 9000 13900 I0850 13000 16000 I1000 16250 18600 I1200 20700 24500 I1400 23500 27000 I1800 30000 35000 I2100 31500 35500 I3300 40000 46000 BTU Hour Because the heat of rejection varies during the ice making cycle the figure shown is an average ...

Page 34: ...it is required for installation and is ordered separate Order appropriate kit 30 or 48 for your bin The stock bin deflector must be removed and replaced with the correct deflector to prevent injury Warning PERSONAL INJURY POTENTIAL Do not operate any ice machine with the deflector removed RE INSTALL TOP COVER REMOVE 1 SCREW ON EACH SIDE REMOVE DEFLECTOR REMOVE 2 SCREWS ON EACH SIDE ...

Page 35: ...ine is going on a larger dispenser 22 machine on a 30 dispenser Important Manitowoc Ice Beverage Ice Machines require an adapter for mounting Adapters are not included with the ice machine dispenser or bin and must be ordered separately When a non Manitowoc adapter is used verify the adapter is compatible with Manitowoc Ice Beverage Ice Machines prior to installation Warning Ice Beverage ice machi...

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Page 37: ... modified with a condenser heat reclaim device or other parts or assemblies not manufactured by Manitowoc Ice Warning Recovery locations vary by model Verify you are making the correct connections for your model to prevent accidental release of high pressure refrigerant Important Manitowoc remote systems are only approved and warranted as a complete new package Warranty on the refrigeration system...

Page 38: ...4A RT 50 R404A I0690N I0890N JC0895 RT 20 R404A RT 35 R404A RT 50 R404A I1090N JC0995 RT 20 R404A RT 35 R404A RT 50 R404A I1490N I1890N JC1395 RL 20 R404A RL 35 R404A RL 50 R404A Line Set Discharge Line Liquid Line RT 1 2 1 27 cm 5 16 79 cm RL 1 2 1 27 cm 3 8 95 cm Air Temperature Around the Condenser Minimum Maximum 20 F 29 C 120 F 49 C ...

Page 39: ...70C ICVD2095 RC 28 RC 38 RC 58 I3070C ICVD3095 RC 29 RC 39 RC 59 Line Set Suction Line Liquid Line Minimum Insulation Thickness RC 26 36 56 5 8 inch 16 mm 3 8 inch 10 mm 1 2 13mm Suction Line 1 4 7mm Liquid Line RC 25 35 55 3 4 inch 19 mm 1 2 inch 13 mm 1 2 13mm Suction Line 1 4 7mm Liquid Line RC 28 38 58 3 4 inch 19 mm 5 8 inch 16 mm 1 2 13mm Suction Line 1 4 7mm Liquid Line RC 29 39 59 Two Line...

Page 40: ...rigerant To Be Added To Nameplate Charge I0590N JC0495 1 5 lbs 680g I0690N JC0895 1 5 lbs 680g I0890N JC0895 2 lbs 907g I0870C ICVD0895 4 lbs 1814g I1090N JC0995 2 lbs 907g I1070C ICVD1095 None I1490N JC1395 2 lbs 907g I1470C ICVD1495 None I1890N JC1395 1 lb 454g I1870C ICVD1895 None I2170C ICVD2195 None I3070C ICVD3095 3 lbs 1361g ...

Page 41: ...rop The maximum rise is 35 10 7 m The maximum drop is 15 4 5 m 35 ft 10 7 m Rise The maximum distance the Condenser or Condensing Unit can be above the ice machine 15 ft 4 5 m Drop The maximum distance the Condenser or Condensing Unit can be below the ice machine SV1751 35 FT 10 7 M MAXIMUM DISTANCE SV1750 15 FT 4 5 M MAXIMUM DISTANCE ...

Page 42: ...sured drop into the formula below Multiply by 6 6 to get the calculated drop Example A condenser located 10 feet below the ice machine has a calculated drop of 66 feet 3 Insert the measured horizontal distance into the formula below No calculation is necessary 4 Add together the calculated rise calculated drop and horizontal distance to get the total calculated distance If this total exceeds 150 4...

Page 43: ...onent Identification I Model Single Evaporator Models O f f O n O f f M o d e WATER DISTRIBUTION TUBE WATER TROUGH ICE THICKNESS CONTROL REFRIGERATION ACCESS VALVES EVAPORATOR DISPLAY WATER PUMP WATER LEVEL PROBE CONTROL BOX WATER CURTAIN ...

Page 44: ... TUBE WATER CURTAIN DUMP VALVE SHUT OFF VALVES ELECTRICAL COMPARTMENT ICE THICKNESS PROBE WATER TROUGH COOL VAPOR VALVE LIQUID LINE SOLENOID VALVE RECEIVER LIQUID LINE DRIER WATER INLET VALVE TXV ELECTRICAL COMPARTMENT DISCHARGE LINE CHECK VALVE DISPLAY TOUCHPAD LUMINICE ...

Page 45: ...EVAPORATOR SPLASH SHIELD BIN SWITCH WATER TROUGH SHIELD ICE DAMPER WATER TROUGH WATER PUMP DUMP VALVE RECEIVER LIQUID LINE SOLENOID VALVE DRIER DISPLAY WATER LEVEL PROBE LEFT SIDE HARVEST VALVE TXV SENSING BULB BOOT AIR PUMP EXPANSION VALVE WATER INLET VALVE Need new graphic with 3 access ports up front ...

Page 46: ...46 Part Number Preliminary 6 11 I Model Quad Evaporator Models WATER PUMPS WATER LEVEL PROBE EVAPORATORS WATER TROUGH CONTROL BOX ICE DAMPERS ...

Page 47: ...0895 ICVD1095 ICVD1195 ICVD1295 ICVD1495 ACCESS VALVE CONDENSER FAN MOTOR HEAD PRESSURE CONTROL VALVE AIR CONDENSER COMPRESSOR SUCTION ACCUMULATOR LIQUID LINE AND SUCTION LINE CONNECTION POINTS ELECTRICAL COMPARTMENT CHECK VALVE ACCESS VALVE LPCO ...

Page 48: ...95 SUCTION ACCUMULATOR COMPRESSOR LIQUID LINE AND SUCTION LINE CONNECTION POINTS AIR CONDENSER HEAD PRESSURE CONTROL VALVE CONDENSER FAN MOTOR ICVD3095 HAS 2 FANS ACCESS VALVES ELECTRICAL COMP CHECK VALVE Not Used On Scroll Compressors ACCESS VALVE ...

Page 49: ... Clean and sanitize the ice machine every six months for efficient operation If the ice machine requires more frequent cleaning and sanitizing consult a qualified service company to test the water quality and recommend appropriate water treatment An extremely dirty ice machine must be taken apart for cleaning and sanitizing Manitowoc Ice Machine Cleaner and Sanitizer are the only products approved...

Page 50: ...ation of Federal law to use these solutions in a manner inconsistent with their labeling Read and understand all labels printed on bottles before use Caution Do not mix Cleaner and Sanitizer solutions together It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling Warning Wear rubber gloves and safety goggles and or face shield when handling Ice Machin...

Page 51: ... the bi yearly cleaning sanitizing procedure EXTERIOR CLEANING Clean the area around the ice machine as often as necessary to maintain cleanliness and efficient operation Wipe surfaces with a damp cloth rinsed in water to remove dust and dirt from the outside of the ice machine If a greasy residue persists use a damp cloth rinsed in a mild dish soap and water solution Wipe dry with a clean soft cl...

Page 52: ...e Machine Cleaner and Sanitizer for this application Manitowoc Cleaner part number 94 0546 3 and Manitowoc Sanitizer part number 94 0565 3 It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling Read and understand all labels printed on bottles before use Caution Do not mix Cleaner and Sanitizer solutions together It is a violation of Federal law to use...

Page 53: ...move all ice from the bin dispenser Step 3 Press the clean switch Water will flow through the water dump valve and down the drain Wait until the water trough refills and the display indicates add solution approximately 1 minute then add the proper amount of ice machine cleaner Caution Never use anything to force ice from the evaporator Damage may result Model Amount of Cleaner I0300 I0320 I0520 3 ...

Page 54: ...parts have been removed Single Evaporator Ice Machines page 58 Multiple Evaporator Ice Machines page 60 Step 6 Mix a solution of cleaner and lukewarm water Depending upon the amount of mineral buildup a larger quantity of solution may be required Use the ratio in the table below to mix enough solution to thoroughly clean all parts Warning Disconnect the electric power to the ice machine at the ele...

Page 55: ...surfaces of the ice machine and bin or dispenser Use a nylon brush or cloth to thoroughly clean the following ice machine areas Side walls Base area above water trough Evaporator plastic parts including top bottom and sides Bin or dispenser Rinse all areas thoroughly with clean water SANITIZING PROCEDURE Step 9 Mix a solution of sanitizer and lukewarm water Step 10 Use 1 2 of the sanitizer water s...

Page 56: ...e to liberally apply the solution When sanitizing pay particular attention to the following areas Side walls Base area above water trough Evaporator plastic parts including top bottom and sides Bin or dispenser Do not rinse the sanitized areas Step 12 Replace all removed components Step 13 Wait 20 minutes Step 14 Reapply power to the ice machine and press the Clean button ...

Page 57: ...e water curtain and evaporator Step 16 Select auto ice on press the checkmark and close and secure the front door The ice machine will automatically start ice making after the sanitize cycle is complete approximately 24 minutes Model Amount of Sanitizer I0300 I0320 I0520 3 ounces 90 ml I0450 I0500 I0600 I0850 I1000 I1200 IB0690C IB0890C 3 ounces 90 ml IB1090C 3 5 ounces 104 ml I1400 I1800 I2100 12...

Page 58: ...the water trough Depress tabs on right and left side of the water trough Allow front of water trough to drop as you pull forward to disengage the rear pins C Remove the water level probe Pull the water level probe straight down to disengage Lower the water level probe until the wiring connector is visible Disconnect the wire lead from the water level probe Remove the water level probe from the ice...

Page 59: ...ness control wiring from the control board E Remove the water distribution tube NOTE Distribution tube thumbscrews are retained to prevent loss Loosen thumbscrews but do not pull thumbscrews out of distribution tube Loosen the two outer screws do not remove screws completely they are retained to prevent loss and pull forward on the distribution tube to release from slip joint Disassemble distribut...

Page 60: ... B Remove ice thickness probe Compress the hinge pin on the top of the ice thickness probe Pivot the ice thickness probe to disengage one pin then the other The ice thickness probe can be cleaned at this point without complete removal If complete removal is desired disconnect the ice thickness control wiring from the control board A B C D E ...

Page 61: ...ead from the water level probe Remove the water level probe from the ice machine E Remove the water distribution tube NOTE Distribution tube thumbscrews are retained to prevent loss Loosen thumbscrews but do not pull thumbscrews out of distribution tube Loosen the two outer screws do not remove screws completely they are retained to prevent loss and pull forward on the distribution tube to release...

Page 62: ... splash shields Lift up and then out B Remove the water trough shield Grasp the water trough shield in the center and the left end Flex the water trough shield in the center and pull the left end forward until clear of the side wall Repeat for the right end Pull water trough shield forward to remove A B C D E ...

Page 63: ...tribution tubes Distribution tubes thumbscrews are retained to prevent loss Loosen thumbscrews but do not pull thumbscrews out of distribution tube Loosen the two outer screws and pull forward on the distribution tube to release from slip joint Disassemble distribution tube by loosening the two 2 middle thumbscrews and dividing the distribution tube into two pieces E Remove the water trough Depres...

Page 64: ...e front evaporator shield Remove four quarter turn connectors Remove splash shield B Remove Splash Shields Grasp the top center of splash shields Lift up and then out NOTE Each evaporator has a splash shield that must be removed total of four splash shields E D C A B F ...

Page 65: ...joint Disassemble distribution tube by loosening the two 2 middle thumbscrews and dividing the distribution tube into two pieces NOTE Each evaporator has a distribution tube that must be removed total of four distribution tubes E Remove the water pump assembly Disconnect the vinyl distribution tube from both water pumps Disconnect the water pump and water level probe electrical connections After t...

Page 66: ...aner water solution while disassembling and cleaning water circuit components soak probes for 10 minutes or longer 3 Clean all probe surfaces including all plastic parts do not use abrasives Verify all cavities are clean Thoroughly rinse probes including cavity with clean water then dry completely Incomplete rinsing and drying of the ice thickness probe can cause premature harvest 4 Reinstall prob...

Page 67: ...he water inlet valve must allow the proper water flow through it Press the Power button to energize the ice machine Watch for water flow into the ice machine If the water flow is slow or only trickles into the ice machine refer to water system checklist Follow the procedure below to remove the water inlet valve 1 Remove the 1 4 hex head screws 2 Remove clean and install the filter screen Warning D...

Page 68: ...g do not remove it Instead follow the Ice Machine Cleaning Procedure Follow the procedure below to remove the dump valve 4 If so equipped remove the water dump valve shield from its mounting bracket 5 Leaving the wires attached twist coil and rotate it counter clockwise1 4 turn 6 Lift the coil assembly off the valve body 7 Remove the spring plunger and nylon gasket from the valve body NOTE At this...

Page 69: ...ing cleaning do not stretch or damage the spring 1 Remove the tubing from the dump valve by twisting the clamps off 2 Remove the valve body twist off Dump Valve Disassembly SPRING PLUNGER DIAPHRAM VALVE BODY COIL MOUNTING BRACKET NYLON GASKET ...

Page 70: ...move the water from the water trough 5 Disconnect and drain the incoming ice making water line at the rear of the ice machine 6 Energize the ice machine and wait one minute for the water inlet valve to open 7 Blow compressed air in both the incoming water and the drain openings in the rear of the ice machine until no more water comes out of the water inlet lines or the drain 8 Make sure water is n...

Page 71: ...ained Air Cooled Ice Machines 2 Disconnect the incoming water and drain line from the water cooled condenser 3 Energize the ice machine in the freeze cycle The increasing refrigerant pressure will open the water regulating valve 4 Blow compressed air through the condenser until no water remains ...

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Page 73: ...display panel BUTTONS Power Button Powers the ice machine when in the On Off Mode The ice machine can also be programmed to automatically power on and off in two Energy Saver modes Cleaning Button Initiates a cleaning cycle Refer to the Maintenance section for details Manitowoc Menu Button Power Button LCD Display Checkmark Cleaning Button Navigation Arrows ...

Page 74: ...r underline within a line of settings NOTE The Right arrow can also be used on many screens interchangeably with the checkmark to make a selection Up and Down Arrows Move the highlight brackets up one line or down one line Checkmark Makes a selection and or moves to the next screen or line DISPLAY PANEL The LCD display panel is 16 characters wide and four lines deep During ice machine operation an...

Page 75: ...ine Info Set Up Fact Deflts Energy Saver Service Time Date Time Config Edit Password Units Ice Clarity LCD Bright Password On Off Clean Minder AuCS Run Time Air Filter Water Filter LuminIce Ice Program Water Miser Statistics Optional Password Entry 90 70 cap Model IMH Serial Cond Serial Warranty Machine Evaporator Compressor Install Date Manuf Date Main SW Ver Disply SW Ver Language USB Setup Ice ...

Page 76: ...ackets down from the fourth line to view more of the menu displayed Arrows Two kinds of arrows give cues to additional information symbols show that another screen is available by pressing Checkmark while a line is highlighted and symbols indicate the limits of the screen viewed NOTE Another cue to the length of a menu screen is that Exit is the last item Time Date Time Config Units Language 07 24...

Page 77: ...d Left arrows Use the Checkmark to move the cursor down one line Exit and re enter the screen to start again at the top Selections When parentheses appear they indicate a selection is available by pressing Checkmark while the line is highlighted If the choice is exclusive selecting it with the Checkmark will uncheck another selection That is in the above Time Config example selecting Day Mo Yr wil...

Page 78: ...ine of the display 1 Press Checkmark A list of alerts will appear in the display 2 Choose the alert you wish to address by moving the highlight brackets with the Down arrow 3 Press Checkmark again A screen appears with a line that can be selected for clearing the alert a line for accessing a list of possible causes and a line for accessing service information 4 Return to the Home screen by pressin...

Page 79: ...nu From the Home screen press the Menu button to enter the Main menu where you can choose to see machine information make setup changes set the Energy Saver mode or enter the Service Menu Machine Info Set Up Energy Saver Factory Defaults Service Exit ...

Page 80: ...ndenser serial number installation date date of manufacture and software version Use the Down arrow to highlight an item and use the Checkmark to view the information Press the Left arrow to return to previous screens Set Up Menu Set Up Language Time Date Time Configuration Units Ice Clarity LCD Bright Password On Edit Password Clean Minder AuCS RunTime Air Filter Water Filter LUMINICE Ice Bin Sen...

Page 81: ...ing procedure 1 Press the Menu button 2 From the Main menu use the Down arrow to highlight setup and press the right arrow 3 Enter the numerical password with the up and or down arrow Press the right arrow to move to the next cell and add another number The password can be from 1 to 13 numbers long 4 When the last number is entered press the checkmark button to save your entry Exit Enter Passwrd ...

Page 82: ...kmark button two times to reset the ice machine The display will return to the Set Up menu and the defaults listed below will be in effect Refer to Setup to adjust settings Setting Default Language English Time Date Month Day Year Time Time Configuration Mo Day Yr 24 Hour Units Fahrenheit Lbs Gallons Ice Clarity Off LCD Brightness Level 2 Password On Off Enter Password Default Password 1234 Edit P...

Page 83: ...oice and pressing the Checkmark Selecting one language will deselect the others 3 When the check reflects your preference use the Down arrow to navigate to Exit and press the Checkmark The display will return to the Set Up menu TIME DATE When the ice machine is installed the correct time and date needs to be set for its location Set the Time and Date 1 Ensure that the ice machine s power is on 2 P...

Page 84: ...the Up or Down arrow adjust the day if necessary 9 When the correct day appears use the Right arrow to move the underline to the year 10 Using the Up or Down arrow adjust the year if necessary 11 When the correct year appears press the Checkmark The underline will move down to the hour 12 Using the Up or Down arrow adjust the hour if necessary 13 When the correct hour appears use the Right arrow t...

Page 85: ...hecks reflect your preference use the Down arrow to navigate to Exit and press the Checkmark The display will return to the Set Up menu UNITS 1 From the Set Up menu use the Down arrow to highlight Units 2 Press the Checkmark On this screen you can choose whether the ice machine will display measurements in Celsius or Fahrenheit kilograms or pounds and gallons or liters by highlighting your choice ...

Page 86: ...choose to turn the ice clarity feature ON or OFF by highlighting your choice and pressing the Checkmark Selecting one will deselect the other 3 When the check reflects your preference use the Down arrow to navigate to Exit and press the Checkmark The display will return to the Set Up menu LCD BRIGHTNESS Here the brightness of the LCD display can be adjusted 1 From the Set Up menu use the Down arro...

Page 87: ...irm current password 3 Enter new password and press the Checkmark 4 Press the Left arrow to return to previous screens and to the Set Up menu CLEAN MINDER Clean Minder is a feature that displays a cleaning reminder at a set time interval 1 From the Set Up menu use the Down arrow to highlight Clean Minder 2 Press the Checkmark On this screen you can choose to turn the reminder ON or OFF by highligh...

Page 88: ...ghting Set Interval and pressing the Checkmark 4 Press the Left arrow to return to previous screens and to the Set Up menu AIR FILTER The ice machine has a feature that displays a clean air filter reminder at a set time interval 1 From the Set Up menu use the Down arrow to highlight Air Filter 2 Press the Checkmark On this screen you can choose to turn the reminder to AUTO or OFF by highlighting y...

Page 89: ...is screen by highlighting Set Interval and pressing the Checkmark 6 Press the Left arrow to return to previous screens and to the Set Up menu LUMINICE REMINDER The LuminIce growth inhibitor recirculates the air in the ice machine foodzone over a UV bulb This process will inhibit the growth of common micro organisms on all exposed foodzone surfaces The Ionic Minder is a feature that displays a remi...

Page 90: ...imes to reset the ice machine The display will return to the Set Up menu For more details and instructions for changing ice machine settings see Set Up Menu Setting Default Language English Time Date Month Day Year Time Time Configuration Mo Day Yr 24 Hour Units Fahrenheit Lbs Gallons Ice Clarity Off LCD Brightness Level 2 Password Off Enter Password Default Password 1234 Edit Password Off Edit Pa...

Page 91: ...ture that reduces water usage by eliminating flush cycles Enabling this feature is only recommended for systems with de ionized or reverse osmosis filtering 1 From the Energy Saver menu use the Down arrow to highlight Water Miser 2 Press the Checkmark On this screen you can choose to turn the Water Miser ON or OFF by highlighting your choice and pressing the Checkmark Selecting one will deselect t...

Page 92: ... highlighting Next and pressing the Checkmark will simply return to the top of this screen If one of the programs is selected highlight Next and press the Checkmark to choose the times or bin levels NOTE For details on how to use the cursor for the time program refer to Display Panel Navigation in this section 4 Select Exit to return to previous screens and again to the Energy Saver menu STATISTIC...

Page 93: ...menu The following pages list the navigation options available by drilling into the menus with the down arrow Service Data History 00000000 00000000 00000000 00000000 00000000 00000000 Lifetime Exit RealTime Data Time Temp Inputs Outputs Exit Diagnostics Control Board Temp Sensors Inputs Exit Man Harvest Hrvst Started Exit Repl Cntl Bd Manual Setup USB Setup Exit USB Setup USB Stick Exit Event Log...

Page 94: ...ll the available information For each of the dates use the Checkmark to view Minimum Freeze Maximum Freeze Minimum Harvest Maximum Harvest Maximum Temperature Delta T3 T4 Delta T3 T4 RunTime Ice Production Cycle Count Potable Water Clean Cycles Exit For Lifetime use the Checkmark to view Install Date Control Board Replacement Date Control Board DOM Date Of Manufacture RunTime Cycle Count Potable W...

Page 95: ...Temperature Status Off On Time Temp T1 Thermistor Temperature T2 Thermistor Temperature T3 Thermistor Temperature T4 Thermistor Temperature T3 T4 Delta Temperature 100 hz 120 hz Exit Inputs Status Off On Curtain Switch 1 Curtain Switch 2 LPCO Switch HPCO Switch Bin Level Low Optional Bin Level Probe Bin Level Medium Optional Bin Level Probe Bin Level High Optional Bin Level Probe Sensing Ice No Ye...

Page 96: ...iminary 6 11 Outputs Status Off On Water Pump Off On Hot Gas Valve 1 Off On Hot Gas Valve 2 Off On Air Pump Off On Water Valve Off On Dump Valve Off On Compressor Control Off On AuCS Relay Off On Ionic Cleaner Off On Exit ...

Page 97: ...1 Thermistor Temperature T2 Thermistor Temperature T3 Thermistor Temperature T4 Thermistor Temperature Exit Inputs Curtain Switch 1 Closed Open Curtain Switch 2 Closed Open LPCO Switch Closed Open HPCO Switch Closed Open Bin Level Low Optional Bin Level Probe Closed Open Bin Level Medium Optional Bin Level Probe Closed Open Bin Level High Optional Bin Level Probe Closed Open Sensing Ice No Yes Wat...

Page 98: ...he replacement control board The data can copied from the defective control board or entered manually Manual Setup Board Install Date Input Model Number USB Setup Insert Drive Press Checkmark and wait for completion Exit USB SETUP USB Stick Download Firmware Insert drive and wait for completion Download Configuration Insert drive and wait for completion Export All Insert drive and wait for complet...

Page 99: ...e when it occurred and how many times Use the Down arrow to view information on subsequent event codes For more information on event codes see Service Menu Use the Left arrow to return to the Event Log menu To clear the event log In the Event Log Menu use the Down arrow to highlight Clear ELog and press the Checkmark Press the Left arrow to return to previous screens Event Log Menu Event Log View ...

Page 100: ...Switch Fault Open more than 12 hours E13 Spare E14 Spare E15 Fan Cycle Control Fault Lo Liquid Line Temperature E16 Remote Condenser Fault E17 Spare E18 Spare E19 Ice Thickness Probe Fault E20 Water System Fault E21 T1 Temperature Sensor Issue E22 T2 Temperature Sensor Issue E23 T3 Temperature Sensor Issue E24 T4 Temperature Sensor Issue E25 Bin Level Probe Low Sensor Fault E26 Bin Level Probe Med...

Page 101: ...Part Number Preliminary 6 11 101 This Page Intentionally Left Blank ...

Page 102: ... until Service is highlighted 5 Press the Checkmark The Service menu will be displayed 6 Press the Down arrow until USB Setup is highlighted 7 Press the Checkmark USB Stick will appear highlighted 8 Press the Checkmark again A submenu with Download Frm Download Firmware appears 9 Ensure that Download Frm is highlighted and press the Checkmark A display of instructions will appear Important The fla...

Page 103: ...e upgrade to complete 11 Upgrade Complete will appear on the display along with the firmware version number RT Harvest Compressor LT Harvest Pump Display Light Micro Light Clean Light Harvest Light SL 1 Light SL 2 Light Fuse Thermistors T1 T2 T3 T4 Display RS485 Bin LED Water Level Probe LuminIce Transformer Battery Bin Switches Bin Thermostat USB Ice Thickness Probe Light Water Level Probe Light ...

Page 104: ... displayed 5 Press the Down arrow until USB Setup is highlighted 6 Press the Checkmark USB Stick will appear highlighted 7 Press the Checkmark again A submenu with Export ALL and Export Setup appears 8 Highlight Export ALL or Export Setup depending on your requirements and press the Checkmark A display of instructions will appear 9 Follow these on screen instructions to A Insert Drive Insert the f...

Page 105: ... Clean Light Harvest Light SL 1 Light SL 2 Light Fuse Thermistors T1 T2 T3 T4 Display RS485 Bin LED Water Level Probe LuminIce Transformer Battery Bin Switches Bin Thermostat USB Ice Thickness Probe Light Water Level Probe Light Right Bin Switch Light Left Bin Switch Light Dump Valve Relay Lights USB Connector ...

Page 106: ...d monitors the safe mode The control will automatically exit the safe mode if a normal signal is received from the input After 72 hours the control board will enter a standby mode and turn off NOTE The control board needs a five cycle history to operate safe mode If five cycles have never been successfully completed the ice machine will shut off Example The ice machine is a new installation and th...

Page 107: ...ure proper operation always follow the Operational Checks when starting the ice machine for the first time after a prolonged out of service period after cleaning and sanitizing NOTE Routine adjustments and maintenance procedures are not covered by the warranty Important Refrigeration compressors must be operated for a minimum break in period of 72 hours before full ice production will be reached ...

Page 108: ...bout 1 8 3 mm thick 2 If adjustment is necessary turn the ice thickness probe adjustment screw clockwise to increase bridge thickness counterclockwise to decrease bridge thickness As a starting point place a 9 32 7 mm drill bit between the ice thickness probe and the evaporator Make final adjustments to achieve a 1 8 3 mm thick bridge NOTE Turning the adjustment 1 3 of a turn will change the ice t...

Page 109: ...and water dump solenoid energize to purge the ice machine of old water This feature ensures that the ice making cycle starts with fresh water 2 Refrigeration System Equalization and Start Up The harvest valve s and air pump s energize to equalize high and low side refrigeration pressure After 5 seconds the contactor energizes the compressor and supplies power to the condenser fan motor After 5 sec...

Page 110: ...rcuit 4 Freeze The water pump s energizes and water flows over the evaporator After water contacts the water level probe the water fill valve de energizes The control board will automatically cycle the water fill valve on and off as needed during the first six minutes of the freeze cycle The freeze cycle continues until the six minute freeze lock expires and enough ice has formed to send a signal ...

Page 111: ...es to slide as a sheet off the evaporator and into the storage bin Single evaporator models The sliding sheet of cubes opens the water curtain ice damper and bin switch The momentary opening and re closing of the bin switch terminates the harvest sequence and returns the ice machine to the freeze sequence Step 3 4 Multiple evaporator models The sliding sheet of cubes opens the ice damper and bin s...

Page 112: ...ce dampers swing back to the closed position the bin switch re closes and the ice machine restarts steps 1 2 provided the 3 minute delay period is complete Control Board Timers The control board has the following non adjustable timers The ice machine is locked into the freeze cycle for 6 minutes before a harvest cycle can be initiated This can be overridden by initiating a manual harvest Refer to ...

Page 113: ...or Length of Time Start Up 1 Water Purge On Off Off Off On Off Off Off 45 Seconds 2 Refrigeration System Start up Off On On Off Off Off Off Off 5 Seconds Off On On Off Off On On On 5 Seconds Freeze Sequence 3 Prechill Off Off Off May Cycle On Off during pre chill Off On On May Cycle On Off Initial Start Up is 60 Seconds 30 Seconds thereafter 4 Freeze On Off Off Cycles Off then On one more time Off...

Page 114: ...tivation 7 Automatic Shut Off Off Off Off Off Off Off Off Off Until 3 Minute Delay Expires and Bin Switch Re closes NOT USED ON ALL MODELS Single Evaporator Self Contained Air Water Cooled Models Energized Parts Chart Continued Ice Making Sequence of Operation Water Pump Harvest Valve s Air Pump s Water Inlet Valve Water Dump Valve Contactor Coil Compressor Condenser Fan Motor Length of Time ...

Page 115: ...r Length of Time Start Up 1 Water Purge On Off Off Off On Off Off Initial Start Up is 45 Seconds 30 Seconds thereafter 2 Refrigeration System Start up Off On On Off Off Off Off 5 Seconds Off On On Off Off On On 5 Seconds Freeze Sequence 3 Prechill Off Off Off May Cycle On Off during pre chill Off On On 30 Seconds thereafter 4 Freeze On Off Off CyclesOff then On up to two more times Off On On Until...

Page 116: ...On On Bin Switch Activation 7 Automatic Shut Off Off Off Off Off Off Off Off Until 3 Minute Delay Expires and Bin Switch Re closes Quad Evaporator Self Contained Water Cooled Model Energized Parts Chart Continued Ice Making Sequence of Operation Water Pumps Harvest Valves Air Pumps Water Inlet Valve Water Dump Valves Contactor Coil Compressor Length of Time ...

Page 117: ...mpressor starts the water pump and water dump solenoid are energized for 45 seconds to completely purge the ice machine of old water This feature ensures that the ice making cycle starts with fresh water 2 Refrigeration System Start Up The harvest valve air pump and harvest pressure regulating HPR solenoid valves energize to equalize high and low side refrigeration pressure After 5 seconds the liq...

Page 118: ...vel probe circuit 4 Freeze The water pump s energizes and water flows over the evaporator After water contacts the water level probe the water fill valve de energizes The control board will automatically cycle the water fill valve on and off as needed during the first six minutes of the freeze cycle The freeze cycle continues until the six minute freeze lock expires and enough ice has formed to se...

Page 119: ...ater dump valve energizes to purge the water in the water trough 6 Harvest The HPR valve air pump and harvest valve s remains open and the refrigerant gas warms the evaporator causing the cubes to slide as a sheet off the evaporator and into the storage bin The sliding sheet of cubes opens the water curtain ice damper and bin switch The momentary opening and re closing of the bin switch terminates...

Page 120: ...er curtain ice damper is held open for 30 seconds the ice machine shuts off The ice machine remains off for 3 minutes before it can automatically restart The ice machine remains off until enough ice has been removed from the storage bin to allow the ice to drop clear of the water curtain ice damper As the water curtain ice damper closes the bin switch the ice machine restarts steps 1 2 provided th...

Page 121: ...noid Compressor Condenser Fan Motor Length of Time Initial Start Up 1 Water Purge On Off Off Off Off On Off Off Off 45 Seconds 2 Refrigeration System Start up Off On On On Off Off Off Off Off 5 Seconds Off On On On Off Off On On On 5 Seconds Freeze Sequence 3 Prechill Off Off Off Off May Cycle On Off during pre chill Off On On On Initial Start Up is 60 Seconds 30 Seconds thereafter 4 Freeze On Off...

Page 122: ...ff Off Off Off Off Off Off Off Until 3 Minute Delay Expires and Bin Switch Re closes Single Evaporator Remote Air Cooled Condenser Models Energized Parts Chart Continued Ice Making Sequence of Operation Water Pump Harvest Valve Left HPR Valve Harvest Valve Right When Used Air Pump When Used Water Inlet Valve Water Dump Valve Contactor Coil LiquidLine Solenoid Compressor Condenser Fan Motor Length ...

Page 123: ...ge the ice machine of old water This feature ensures that the ice making cycle starts with fresh water 2 Refrigeration System Start Up Ice Machine Head Section The harvest valve s air pump s and liquid line solenoid valve energizes to equalize high and low side refrigeration pressure After 10 seconds the harvest valve s and air pump s de energize ICVD Condensing Unit The low pressure switch closes...

Page 124: ...er level probe circuit 4 Freeze The water pump s energizes and water flows over the evaporator After water contacts the water level probe the water fill valve de energizes The control board will automatically cycle the water fill valve on and off as needed during the first six minutes of the freeze cycle The freeze cycle continues until the six minute freeze lock expires and enough ice has formed ...

Page 125: ... s remains open The refrigerant gas warms the evaporator causing the cubes to slide as a sheet off the evaporator and into the storage bin Single evaporator models The sliding sheet of cubes opens the water curtain ice damper and bin switch The momentary opening and re closing of the bin switch will terminate the harvest sequence and return to the freeze sequence Step 3 4 Twin Quad evaporator mode...

Page 126: ...can automatically restart ICVD Condensing Unit The liquid line solenoid valve closes and the condensing unit pumps down The LPCO opens and signals the control board The control board starts a ten minute delay period and opens the 24 VAC circuit to the contactor coil stopping the compressor and condenser fan motor RESTART AFTER AUTOMATIC SHUT OFF The ice machine remains off until enough ice has bee...

Page 127: ... Fan Motor Length of Time Start Up Initial or After Auto Shut Off 1 Water Purge On Off Off Off On Off Off 45 Seconds 2 Refrigeration System Start up Pressure Equalization Compressor Start Off On On Off Off Off Off 5 Seconds Off On On Off Off On On 5 Seconds Freeze Sequence 3 Pre chill Off Off Off On Cycles Off then On Off one more time Off On On Initial Start Up is 60 Seconds 30 Seconds thereafter...

Page 128: ...utomatic Shut Off Off Off Off Off Off Off Off Until 10 min delay expires all bin switches re close Single Twin Evaporator QuietQube Models Energized Parts Chart Continued Ice Making Sequence of Operation Water Pump Harvest Valve s Air Pumps Water Inlet Valve Water Dump Valve Liquid Line Solenoid Valve Contactor Refrigeration Compressor Condenser Fan Motor Length of Time ...

Page 129: ...geration Compressor Condenser Fan Motor Length of Time Start Up Initial or After Auto Shut Off 1 Water Purge On Off Off Off On Off Off 45 Seconds 2 Refrigeration System Start up Off On On On Off Off Off 5 Seconds Off On On Off Off On On 5 Seconds Freeze Sequence 3 Pre chill Off Off Off On Cycles Off then On Off one more time Off On On 30 Seconds 4 Freeze On Off Off Off On On Until Ice contact with...

Page 130: ...n 7 Automatic Shut Off Off Off Off Off Off Off Off Until 10 min delay expires all bin switches re close Quad Evaporator QuietQube Energized Parts Chart Continued Ice Making Sequence of Operation Water Pump Harvest Valve s Air Pumps Water Inlet Valve Water Dump Valve Liquid Line Solenoid Valve Refrigeration Compressor Condenser Fan Motor Length of Time ...

Page 131: ...harvest cycle When the bin switch is closed a freeze sequence initiates steps 3 4 When the bin switch is open an automatic shutoff sequence initiates The maximum water fill is 6 minutes WATER ASSIST HARVEST FEATURE Twin Quad Evaporators Only Typical duration of a Harvest sequence is less than 2 5 minutes When the Harvest sequence time reaches 4 minutes the following occurs 4 minutes into a Harvest...

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Page 133: ...freeze time reaches 60 minutes the control board automatically initiates a harvest cycle If 6 consecutive 60 minute freeze cycles occur the ice machine stops Safety Limit 2 single evaporator models If the harvest time reaches 3 5 minutes the control board automatically returns the ice machine to the freeze cycle If 500 consecutive 3 5 minute harvest cycles occur the ice machine stops Safety Limit ...

Page 134: ...ature at night a water pressure drop the water is turned off one night a week etc Refrigeration and electrical component failures will cause a safety limit trip Eliminate all electrical components and external causes first If it appears that the refrigeration system is causing the problem use Manitowoc s Freeze Cycle Refrigeration System Operational Analysis Table along with detailed charts checkl...

Page 135: ...Electrical System Low incoming voltage Ice thickness probe out of adjustment Harvest cycle not initiated electrically Contactor not energizing Compressor electrically non operational Defective fan cycling control Defective fan motor Miscellaneous Non Manitowoc components Improper refrigerant charge Defective head pressure control Defective harvest valve Defective compressor TXV starving or floodin...

Page 136: ...ot securely mounted to the evaporator Low water pressure 20 psig min Loss of water from sump area Clogged water distribution tube Dirty defective water fill valve Defective water pump Electrical System Ice thickness probe out of adjustment Ice thickness probe dirty Bin switch closed defective Premature harvest I3300W Only Harvest pressure solenoid valve not energizing Refrigeration System Non Mani...

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Page 138: ...138 Part Number Preliminary 6 11 This Page Intentionally Left Blank ...

Page 139: ...ne Stops Running Ice machine is in Ice Making cycle or Has a History of Shutting Down Refer to Ice Machine Stops Running Flow Chart SYMPTOM 2 Ice Machine has a Long Freeze Cycle Ice Formation is Thick or Thin Ice Fill on Top or Bottom of Evaporator or Low Production Safety Limit 1 possible Refer to Freeze Cycle Refrigeration System Operational Analysis Table SYMPTOM 3 Ice Machine Will Not Harvest ...

Page 140: ... the ice machine to factory defaults use the following procedure 1 Ensure that the ice machine s power is on 2 Press the Menu button 3 From the Main menu use the Down button to highlight Fact Deflts 4 Press either the Checkmark or right arrow two times to reset the ice machine The display will return to the Set Up menu and the defaults listed below will be in affect Refer to Setup to adjust settin...

Page 141: ...y lights on or flashing on the control board ICE MACHINE STOPS RUNNING OR HAS A HISTORY OF SHUTTING DOWN Yes Refer to display control board diagnostics Is there an Alert or Error Logged Refer to Alert Error Log Yes No Yes No Line voltage at wires 55 56 on 9 pin control board connector Supply power to the ice machine No ...

Page 142: ...eartbeat No Install the water curtain damper All water curtains or dampers in place No Line voltage at wires 55 56 on 9 pin control board connector Supply power to the ice machine Yes No Yes Refer to display control board diagnostics Replace fuse determine which component caused fuse to blow Refer to display control board diagnostics No Yes Yes ...

Page 143: ...agnet on the water curtain damper Yes Replace the water curtain damper No Yes Ice machine starts No No Test run ice machine Yes Which light flashes Yes Yes Refer to Safety Limit 2 long harvest cycle Refer to Safety Limit 1 long freeze cycle Refer to bin switch diagnostics Refer to display control board diagnostics ...

Page 144: ...gized the fuse is okay 4 Verify all bin switches function properly A defective bin switch can falsely indicate a full bin of ice 5 Perform control board display board and touch screen diagnostics Be sure steps 1 6 were followed thoroughly Intermittent problems are not usually related to the control board Warning High line voltage is applied to the control board terminals 55 and 56 at all times Rem...

Page 145: ... 2 Test for 24 vac at terminals C V Replace transformer if 24 vac is not present 3 Verify the low pressure control is closed by testing for 24 vac terminals C LPC 4 Verify wires are intact and ice machine is calling for cooling by testing for 24 vac terminals C HPC1 5 Verify the high pressure control is closed by testing for 24 vac at the contactor coil terminals 6 Verify the contactor contacts ar...

Page 146: ...s from the compressor terminals 2 The resistance values between C and S and between C and R when added together should equal the resistance value between S and R 3 If the overload is open there will be a resistance reading between S and R and open readings between C and S and between C and R Allow the compressor to cool then check the readings again THREE PHASE COMPRESSORS 1 Disconnect power and r...

Page 147: ...draw while the compressor is trying to start The two likely causes of this are a defective starting component and a mechanically seized compressor To determine which you have 1 Install high and low side gauges 2 Try to start the compressor 3 Watch the pressures closely A If the pressures do not move the compressor is seized Replace the compressor B If the pressures move the compressor is turning s...

Page 148: ...t be used with charts checklists and other references to eliminate refrigeration components not listed on the tables and external items and problems which can cause good refrigeration components to appear defective The tables list five different defects that may affect the ice machine s operation NOTE A low on charge ice machine and a starving expansion valve have very similar characteristics and ...

Page 149: ... is found it is not necessary to complete the remaining procedures Step 2 Enter Checkmarks Each time the actual findings of an item in the Operational Analysis column matches the published findings on the table enter a Checkmark Example Freeze cycle suction pressure is determined to be low Enter a Checkmark in the low column Step 3 Add the Checkmarks listed under each of the four columns Note the ...

Page 150: ...installation and water related problems must be corrected before proceeding with chart Ice Formation Pattern Ice formation is extremely thin on outlet of evaporator or No ice formation on the entire evaporator Ice formation is extremely thin on outlet of evaporator or No ice formation on entire evaporator Ice formation normal or Ice formation is extremely thin on inlet of evaporator or No ice form...

Page 151: ...ion pressure is High Wait 5 minutes into the freeze cycle Compare temperatures of evaporator inlet and evaporator outlet Inlet _____________ F C Outlet ___________ F C Difference________ F C Inlet and outlet within 7 F 4 C of each other Inlet and outlet not within 7 F 4 C of each other and Inlet is colder than outlet Inlet and outlet within 7 F 4 C of each other or Inlet and outlet not within 7 F ...

Page 152: ... F 65 C or higher at the end of the freeze cycle I0850 I1000 Air Water Only Discharge line temp 140 F 60 C or higher at the end of the freeze cycle Discharge line temp 150 F 65 C or higher at the end of the freeze cycle I0850 I1000 Air Water Only Discharge line temp 140 F 60 C or higher at the end of the freeze cycle Discharge line temp less than 150 F 65 C at the end of the freeze cycle I0850 I10...

Page 153: ...ith table Ice Formation Pattern Left Side_______________ Right Side______________ Ice formation is extremely thin on outlet of evaporator or No ice formation on the one side of evaporator Ice formation is extremely thin on outlet of one side of evaporator or No ice formation on entire evaporator Ice formation normal or Ice formation is extremely thin at inlet of one side of evaporator or No ice fo...

Page 154: ...t 5 minutes into the freeze cycle Compare temperatures of compressor discharge line and both harvest valve inlets The harvest valve inlet is Hot and approaches the temperature of a Hot compressor discharge line The harvest valve inlet is Cool enough to hold hand on and the compressor discharge line is Hot The harvest valve inlet is Cool enough to hold hand on and the compressor discharge line is C...

Page 155: ...ne temp 150 F 65 C or higher at the end of the freeze cycle Discharge line temp less than 150 F 65 C at the end of the freeze cycle Discharge line temp 150 F 65 C or higher at the end of the freeze cycle Final Analysis Enter total number of boxes checked in each column Harvest Valve Leaking Low On Charge Or TXV Starving TXV Flooding Compressor DUAL EXPANSION VALVE SELF CONTAINED AIR WATER REMOTE C...

Page 156: ...t be corrected before proceeding with chart Ice Formation Pattern Evaporators are numbered left to right viewed from the front of the ice machine Evaporator 1______________ Evaporator 2______________ Evaporator 3______________ Evaporator 4______________ Ice formation is normal Ice formation is extremely thin on outlet of 1 or more evaporators or No ice formation on entire evaporator Ice formation ...

Page 157: ...ted on this table before proceeding Suction pressure is High Suction pressure is Normal or Low Suction pressure is Normal or High Suction pressure is High Suction pressure is High Evaporator Outlet Temperature Comparison Attach and insulate temperature probes between evaporator outlet and 90 elbow Evaporator outlet temperatures are within 10 F of each other Evaporator outlet temperatures are NOT w...

Page 158: ... enough to hold hand on Discharge Line Temperature Record freeze cycle discharge line temperature at the end of the freeze cycle _________ F C Discharge line temperature 150 F 65 C or higher at the end of the freeze cycle Discharge line temperature 150 F 65 C or higher at the end of the freeze cycle Discharge line temperature less than 150 F 65 C at the end of the freeze cycle or Compressor shell ...

Page 159: ...er Information provided by the user can help the technician start in the right direction and may be a determining factor in the final diagnosis Ask these questions before beginning service When does the ice machine malfunction night day all the time only during the Freeze cycle etc When do you notice low ice production one day a week every day on weekends etc Can you describe exactly what the ice ...

Page 160: ...p entering sump trough ____ 2 Refer to the appropriate 24 Hour Ice Production Chart starting on page 307 Use the operating conditions determined in step 1 to find published 24 Hour Ice Production _____ Times are in minutes Example 1 min 15 sec converts to 1 25 min 15 seconds 60 seconds 25 minutes Weights are in pounds Example 2 lb 6 oz converts to 2 375 lb 6 oz 16 oz 375 lb 3 Perform an ice produc...

Page 161: ...ction Charts may be used 4 Compare the results of step 3 with step 2 Ice production checks that are within 10 of the chart are considered normal If they match closely determine if Another ice machine is required More storage capacity is required Relocating the existing equipment to lower the load conditions is required Contact the local Manitowoc Distributor for information on available options an...

Page 162: ...ce machine is not level Level the ice machine Condenser is dirty Clean the condenser Water filtration is plugged if used Install a new water filter Water drains are not run separately and or are not vented Run and vent drains according to the Installation Manual Line set is improperly installed Reinstall according to the Installation Manual ...

Page 163: ... 35 F 2 C and 90 F 32 C If too hot check the hot water line check valves in other store equipment Water filtration is plugged if used Install a new water filter Water dump valve leaking during the Freeze cycle Clean replace dump valve as needed Vent tube is not installed on water outlet drain See Installation Instructions Hoses fittings etc are leaking water Repair replace as needed Water fill val...

Page 164: ...tor than on the outlet At the end of the Freeze cycle ice formation at the outlet will be close to or just a bit thinner than ice formation at the inlet The dimples in the cubes at the outlet of the evaporator may be more pronounced than those on the inlet This is normal It is normal for ice thickness to vary up to 1 16 across the surface of the evaporator The ice bridge thickness at the ice thick...

Page 165: ...at the outlet of the evaporator reaches 1 8 in to initiate a harvest but there is no ice formation at all on the inlet of the evaporator 4 No Ice Formation The ice machine operates for an extended period but there is no ice formation at all on the evaporator Evaporator Tubing Routing Routing of the tubing on the back of the evaporator determines the ice fill pattern failure mode The evaporator out...

Page 166: ...rge pressures Freeze Cycle______ Harvest Cycle______ 3 Perform an actual discharge pressure check 4 Compare the actual discharge pressure step 3 with the published discharge pressure step 2 The discharge pressure is normal when the actual pressure falls within the published pressure range for the ice machine s operating conditions It is normal for the discharge pressure to be higher at the beginni...

Page 167: ... recirculation Defective fan cycling control page 273 Defective fan motor Defective head pressure control valve Remote Water Condenser Low water pressure 20 psig 138 kPa min High inlet water temperature 90 F 32 C max Dirty condenser Dirty Defective water regulating valve Water regulating valve out of adjustment Other Overcharged Non condensable air in system Wrong type of refrigerant Non Manitowoc...

Page 168: ... page 162 Air Cooled Condensers Defective head pressure control valve won t bypass page 273 Defective fan cycle control stuck closed page 273 Water Cooled Condensers Water Regulating Valve out of adjustment Water Regulating Valve Defective Other Undercharged Wrong type of refrigerant Non Manitowoc components in system Liquid line component restricted ...

Page 169: ...he published freeze cycle time NOTE Analyze discharge pressure before analyzing suction pressure High or low discharge pressure may be causing high or low suction pressure Procedure Step 1 Determine the ice machine operating conditions Temperature of air entering the condenser Look up and determine the published suction pressure 2 Perform an actual suction pressure check at the beginning middle an...

Page 170: ...o Freeze Cycle Discharge Pressure High Checklist page 167 Improper Refrigerant Charge Overcharged also see Freeze Cycle Discharge Pressure High Checklist page 167 Wrong type of refrigerant Non condensable in system Components Harvest valve leaking continue the table Harvest pressure solenoid valve leaking continue the table TXV flooding continue the table Defective compressor continue the table Ot...

Page 171: ...ffecting low side refer to Freeze Cycle Discharge Pressure High Checklist page 167 Improper Refrigerant Charge Undercharged Wrong type of refrigerant Other Non Manitowoc components in system Improper water supply over evaporator refer to Water System Checklist page 163 Restricted plugged liquid line drier Restricted plugged tubing in suction side of refrigeration system TXV starving continue the t...

Page 172: ...kes documenting the normal inlet and outlet temperature readings difficult The key to the diagnosis lies in the difference between the two temperatures five minutes into the freeze cycle These temperatures should be within 7 of each other Use this procedure to document freeze cycle inlet and outlet temperatures 1 Use a quality temperature meter capable of taking temperature readings on curved copp...

Page 173: ...reeze cycle temperatures vary with ambient and water temperature but the temperatures of all evaporators will always be within 10 degrees of each other in a correctly operating ice machine Use this procedure to document freeze cycle inlet and outlet temperatures 1 Use a quality temperature meter capable of taking temperature readings on curved copper lines 2 Attach the temperature meter sensing de...

Page 174: ... CONTAINED OR REMOTE CONDENSER MODELS HARVEST VALVE ANALYSIS 1 Wait five minutes into the freeze cycle 2 Feel the inlet of the harvest valve s 3 Feel the compressor discharge line 4 Compare the temperature of the inlet of the harvest valves to the temperature of the compressor discharge line Important Feeling the harvest valve outlet or across the harvest valve itself will not work for this compar...

Page 175: ...est valve is hot and approaches the temperature of a hot compressor discharge line Hot Hot This is an indication something is wrong as the harvest valve inlet did not cool down during the freeze cycle If the compressor dome is also entirely hot the problem is not a harvest valve leaking but rather something causing the compressor and the entire ice machine to get hot Both the inlet of the harvest ...

Page 176: ... or lower supply water temperature lower discharge line temperatures at the compressor Regardless of ambient and water temperatures the freeze cycle discharge line temperature will be higher than 150 F 66 C I0850 I1000 Air Water Machines Only 140 F 60 C at the end of the freeze cycle PROCEDURE Connect a temperature probe on the compressor discharge line with in 6 of the compressor and insulate Obs...

Page 177: ...r to cycle times 24 hour productions charts clean or replace valve Discharge pressure extremely high Liquid line entering receiver feels hot Water regulating valve incorrectly set or not opening Verify Head Pressure Control Valve operation before changing water regulating valve Discharge pressure low Liquid line entering receiver feels warm to hot Ice machine low on charge Verify Total System Refr...

Page 178: ...nd water self contained only Do not add more than 30 of nameplate refrigerant charge If the problem is corrected the ice machine is low on charge Do not add charge to remote models The symptoms of a remote low on charge will result in a safety limit 1 in cool ambient temperatures Check the liquid line temperature at the ice machine The liquid line will be hot with a normal or below normal head pre...

Page 179: ...aporator machines the service technician is able to tell which TXV is flooding by comparing the evaporator outlets Change only the flooding expansion valve On dual expansion valve machines a third and fourth valve are not available for comparison and both valves will need to be changed COLUMN 4 COMPRESSOR Replace the compressor To receive warranty credit the compressor ports must be properly seale...

Page 180: ...ed This indicates something is on the evaporator preventing the ice slab from releasing Follow the appropriate flow chart in Troubleshooting to determine the cause of the problem A manual cleaning procedure must always be performed when this problem is encountered Normal sheet of cubes at the end of the harvest cycle Ice is difficult to remove from the evaporator by hand Once removed the back of t...

Page 181: ...ng harvest cycle Possible SL 2 Back of cubes are not melted Discharge line temperature is normal at the end of the freeze cycle S850 S1000 A W 140F 60C All other S Models 150F 65C Refer to Symptom 2 Freeze Cycle Operational Analysis Table Is harvest valve energized Refer to Sequence of Operation Wiring Diagrams Is head pressure high suction pressure low in harvest Refer to Pressure Charts Replace ...

Page 182: ...reeze cycle Fan cycling control opens below setpoint in harvest cycle Replace Fan Cycling Control Maintains correct pressure in freeze cycle Stops water flow 100 in harvest cycle Adjust or Replace Water Regulating Valve Traditional Remote Air cooled Condenser Are you sure Discharge line temperature is normal Repeat this flowchart verify all data Refer to Symptom 3 Traditional Remotes Only Chart ...

Page 183: ... normally above 70F 21C YES YES YES NO Liquid Line Temperature Cool NO Liquid Line Temperature Hot Liquid Line Temperature Warm body temperature Wet condenser with water during freeze cycle Replace Headmaster System low on refrigerant Normal ice fill long harvest cycle possible SL 2 back of cubes are not melted at the end of harvest cycle Discharge line temperature is normal at the end of the free...

Page 184: ... harvest Is head pressure normal suction pressure normal in harvest Refer to Harvest Pressure Regulating Valve Diagnostics Repeat this flowchart verify all data Refer to Symptom 4 Will Not Harvest Freeze Cycle Normal Ice Cubes are Melted Flowchart Single Evaporator Systems with Dual Harvest Valves If one Harvest Vavle is open and the other is restricted stuck closed you may have normal harvest pre...

Page 185: ...he first 45 seconds of harvest Is Ice Machine level Are back of the cubes melted at end of harvest cycle Does ice remain frozen to the evaporator at the end of the harvest cycle YES YES YES YES NO NO NO NO Ice Machine Will Not Harvest Freeze Cycle is Normal and Ice Cubes are Melted After Harvest Continued on Next Page Refer to Symptom 2 Freeze Cycle Operational Analysis Table ...

Page 186: ...lysis Table Refer to Heavily Scaled Cleaning Procedure Discharge line temperature is normal at the end of the freeze cycle S850 S1000 A W 140F 60C All other S Models 150F 65C Refer to Manual Cleaning Procedure Is the evaporator dirty Dry evaporator first then check YES YES NO NO NO ...

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Page 189: ...used with charts checklists and other references to eliminate refrigeration components not listed on the tables and external items and problems which can cause good refrigeration components to appear defective The tables list five different defects that may affect the ice machine s operation NOTE A low on charge ice machine and a starving expansion valve have very similar characteristics and are l...

Page 190: ... is found it is not necessary to complete the remaining procedures Step 2 Enter Checkmarks Each time the actual findings of an item in the Operational Analysis column matches the published findings on the table enter a Checkmark Example Freeze cycle suction pressure is determined to be low Enter a Checkmark in the low column Step 3 Add the Checkmarks listed under each of the four columns Note the ...

Page 191: ...uction is within 10 of charted capacity Installation and Water System All installation and water related problems must be corrected before proceeding with chart Ice Formation Pattern Ice formation is extremely thin on outlet of evaporator or No ice formation on the entire evaporator Ice formation normal or Ice formation is extremely thin on outlet of evaporator or No ice formation on entire evapor...

Page 192: ... Suction Pressure _______ ______ _____ 1 minute Middle End If suction pressure is High or Low refer to freeze cycle high or low suction pressure problem checklist page 166 page 169 to eliminate problems and or components not listed on this table before proceeding Suction pressure is High Suction pressure is Low or Normal Suction pressure is Normal or High Suction pressure is High Harvest Valve Aud...

Page 193: ...suction shut off valve is greater than 10 F 12 2 C at the end of the freeze cycle Suction line temp at the suction shut off valve is less than 10 F 12 2 C at the end of the freeze cycle Suction line temp at the suction shut off valve is greater than 10 F 12 2 C at the end of the freeze cycle Final Analysis Enter total number of boxes checked in each column Harvest Valve Leaking Low On Charge Or TX...

Page 194: ...ity Installation and Water System All installation and water related problems must be corrected before proceeding with chart Ice Formation Pattern Left _______________ Right ______________ Ice formation is extremely thin on outlet of one evaporator or No ice formation on top of one evaporator Ice formation is normal or Ice formation is extremely thin on outlet of one or both evaporators or No ice ...

Page 195: ...pressure problem checklist page 166 page 166 to eliminate problems and or components not listed on this table before proceeding Freeze Cycle Suction Pressure ________ ________ ________ 1 minute Middle End If suction pressure is High or Low refer to Freeze cycle high or low suction pressure problem checklist page 169 page 169 to eliminate problems and or components not listed on this table before p...

Page 196: ...Suction line temperature at the suction shut off valve is greater than 10 F 12 2 C at the end of the Freeze cycle Suction line temperature at the suction shut off valve is greater than 10 F 12 2 C at the end of the Freeze cycle Suction line temperature at the suction shut off valve is less than 10 F 12 2 C at the end of the Freeze cycle Suction line temperature at the suction shut off valve is gre...

Page 197: ...e ice fill patterns is normal and ice production is within 10 of charted capacity Installation and Water System All installation and water related problems must be corrected before proceeding with chart Ice Formation Pattern Evaporators are numbered left to right viewed from the front of the ice machine Evaporator 1______________ Evaporator 2______________ Evaporator 3______________ Evaporator 4__...

Page 198: ...pressure problem checklist page 166 page 166 to eliminate problems and or components not listed on this table before proceeding Freeze Cycle Suction Pressure ________ ________ ________ 1 minute Middle End If suction pressure is High or Low refer to freeze cycle high or low suction pressure problem checklist page 169 page 169 to eliminate problems and or components not listed on this table before p...

Page 199: ...lve A leaking harvest valve gives an audible indication before ice fill pattern or machine performance is affected Audible flow of refrigerant through any harvest valve during the freeze cycle No Audible flow of refrigerant through any harvest valve during the freeze cycle No Audible flow of refrigerant through any harvest valve during the freeze cycle No Audible flow of refrigerant through any ha...

Page 200: ...le it is being serviced but malfunctions later Information provided by the user can help the technician start in the right direction and may be a determining factor in the final diagnosis Ask these questions before beginning service When does the ice machine malfunction night day all the time only during the Freeze cycle etc When do you notice low ice production one day a week every day on weekend...

Page 201: ...Water temp entering sump trough ____ 2 Refer to the appropriate 24 Hour Ice Production Chart starting on page 307 Use the operating conditions determined in step 1 to find published 24 Hour Ice Production _____ Times are in minutes Example 1 min 15 sec converts to 1 25 min 15 seconds 60 seconds 25 minutes Weights are in pounds Example 2 lb 6 oz converts to 2 375 lb 6 oz 16 oz 375 lb 3 Perform an i...

Page 202: ...ction Charts may be used 4 Compare the results of step 3 with step 2 Ice production checks that are within 10 of the chart are considered normal If they match closely determine if Another ice machine is required More storage capacity is required Relocating the existing equipment to lower the load conditions is required Contact the local Manitowoc Distributor for information on available options an...

Page 203: ...l the ice machine Condenser is dirty Clean the condenser Water filtration is plugged if used Install a new water filter Water drains are not run separately and or are not vented Run and vent drains according to the Installation Manual Line set is improperly installed Reinstall according to the Installation Manual Lineset is the incorrect size Refer to Installation Use and Care Manual ...

Page 204: ... between 35 F 2 C and 90 F 32 C If too hot check the hot water line check valves in other store equipment Water filtration is plugged if used Install a new water filter Water dump valve leaking during the Freeze cycle Clean replace dump valve as needed Vent tube is not installed on water outlet drain See Installation Instructions Hoses fittings etc are leaking water Repair replace as needed Water ...

Page 205: ...or than on the outlet At the end of the Freeze cycle ice formation at the outlet will be close to or just a bit thinner than ice formation at the inlet The dimples in the cubes at the outlet of the evaporator may be more pronounced than those on the inlet This is normal It is normal for ice thickness to vary up to 1 16 across the surface of the evaporator The ice bridge thickness at the ice thickn...

Page 206: ...at the outlet of the evaporator reaches 1 8 in to initiate a harvest but there is no ice formation at all on the inlet of the evaporator 4 No Ice Formation The ice machine operates for an extended period but there is no ice formation at all on the evaporator Evaporator Tubing Routing Routing of the tubing on the back of the evaporator determines the ice fill pattern failure mode The evaporator out...

Page 207: ...the Evaporator Outlet will first be visible near the middle of the evaporator IB1000 evaporator outlet is roughly 3 4 of the way down the evaporator Extremely Thin at the Evaporator Outlet will first be visible near the bottom and then the right side of the evaporator Extremely Thin at the Evaporator Inlet remains the same as the other models and will first be visible several inches above the bott...

Page 208: ...l discharge pressures Freeze Cycle______ Harvest Cycle______ 3 Perform an actual discharge pressure check 4 Compare the actual discharge pressure step 3 with the published discharge pressure step 2 The discharge pressure is normal when the actual pressure falls within the published pressure range for the ice machine s operating conditions It is normal for the discharge pressure to be higher at the...

Page 209: ...arge air recirculation Defective fan cycling control page 273 Defective fan motor Defective head pressure control valve Remotes Water Condenser Low water pressure 20 psig 138 kPa min High inlet water temperature 90 F 32 C max Dirty condenser Dirty Defective water regulating valve Water regulating valve out of adjustment Other Overcharged Non condensable air in system Wrong type of refrigerant Non ...

Page 210: ...hecklist page 162 Air Cooled Condensers Defective head pressure control valve won t bypass page 273 Defective fan cycle control stuck closed page 273 Water Cooled Condensers Water Regulating Valve out of adjustment Water Regulating Valve Defective Other Undercharged Wrong type of refrigerant Non Manitowoc components in system Liquid line component restricted ...

Page 211: ...ure to the published freeze cycle time NOTE Analyze discharge pressure before analyzing suction pressure High or low discharge pressure may be causing high or low suction pressure Procedure Step 1 Determine the ice machine operating conditions Temperature of air entering the condenser Look up and determine the published suction pressure 2 Perform an actual suction pressure check at the beginning m...

Page 212: ... is affecting suction pressure refer to Freeze Cycle Discharge Pressure High Checklist page 167 Improper Refrigerant Charge Overcharged also see Freeze Cycle Discharge Pressure High Checklist page 167 Wrong type of refrigerant Non condensable in system Components Harvest valve leaking continue the table TXV flooding continue the table Defective compressor continue the table Other Non Manitowoc com...

Page 213: ...and is affecting low side refer to Freeze Cycle Discharge Pressure High Checklist page 167 Improper Refrigerant Charge Undercharged Wrong type of refrigerant Other Non Manitowoc components in system Improper water supply over evaporator refer to Water System Checklist page 163 Restricted plugged liquid line drier Restricted plugged tubing in suction side of refrigeration system TXV starving contin...

Page 214: ...rcuit board has initiated a Harvest cycle suction and discharge pressures remain unchanged from the Freeze cycle The ice machine will remain in the Harvest cycle for 3 5 minutes 7 minutes Quad Evaporators then initiate a new Freeze cycle Valve remains open in the Freeze cycle Symptoms of a harvest valve remaining partially open during the Freeze cycle can be similar to symptoms of an expansion val...

Page 215: ...ality temperature meter capable of taking temperature readings on curved copper lines 2 Attach the temperature meter thermocouple to the copper suction line within 6 of the shut off valves 3 Monitor the suction line temperature during the last three minutes of the freeze cycle and record the low event 4 Use this with other information gathered on the Refrigeration Component Analysis Chart to deter...

Page 216: ...y Do not add more than 30 of nameplate refrigerant charge If the problem is corrected the ice machine is low on charge Do not add charge to remote models The symptoms of a remote low on charge will result in a safety limit 1 in cool ambient temperatures Check the liquid line temperature at the ice machine The liquid line will be hot with a normal or below normal head pressure in freeze when the ic...

Page 217: ...Quad evaporator machines the service technician is able to tell which TXV is flooding by comparing the evaporator outlets Change only the flooding expansion valve On dual expansion valve machines a third and fourth valve are not available for comparison and both valves will need to be changed COLUMN 4 COMPRESSOR Replace the compressor To receive warranty credit the compressor ports must be properl...

Page 218: ...is indicates something is on the evaporator preventing the ice slab from releasing Follow the appropriate flow chart in Troubleshooting to determine the cause of the problem A manual cleaning procedure must always be performed when this problem is encountered Normal sheet of cubes at the end of the harvest cycle Ice is difficult to remove from the evaporator by hand Once removed the back of the cu...

Page 219: ...mal and Ice Cubes Are Not Melted After Harvest Is the Harvest Valve s Energized Refer to Sequence of Operation Wiring Diagram Note All pressure readings are taken from the Liquid Suction Shut off Valves at the ice machine head section Are the Harvest Pressures normal Is the ice machine installed correctly Correct the Installation YES YES YES NO NO NO ICE MACHINE WILL NOT HARVEST FREEZE CYCLE NORMA...

Page 220: ...al Feels Warm to Hot Cold Feel temperature of Receiver after 30 seconds into harvest cycle Is Head Pressure low Suction Pressure low in harvest Replace Harvest Valve Is Head Pressure high Suction Pressure low in harvest Not a refrigeration problem Clean Inspect Evaporator ...

Page 221: ...erature of Liquid Line at Condensing Unit Does the Condenser Fan Motor run below cut out setpoint in harvest Backseat Liquid Line Shut Off Valve or Replace Look for Restriction Correct Line Set Size Proper Insulation Refer to Fan Cycling Control Diagnostics Cold Cold Cold Feels Hot Feels Hot YES NO ...

Page 222: ...aster Diagnostics Headmaster is not in 100 Bypass Headmaster is in 100 Bypass Refrigerant Charge is Incorrect Evacuate System Recharge perform Production Check Refer to Symptom 2 Refrigeration Operational Analysis Table Refrigerant Charge is Correct IMPORTANT Weigh charge as you are recovering if incorrect evacuate recharge if correct then proceed ...

Page 223: ...elted After Harvest Is Ice Machine level NO NO YES YES YES NO Is water flow over the evaporator at the end of harvest cycle YES NO Refer to Refrigeration Analysis Chart Ice remains frozen to the evaporator at the end of the harvest cycle Level Ice Machine Refer to Dump Valve Diagnostics Back of cubes are melted at end of harvest cycle Continued on Next Page ...

Page 224: ...224 Part Number Preliminary 6 11 Refer to Symptom 2 Freeze Cycle Operational Analysis Table Refer to Cleaning Procedures YES NO NO Is the evaporator dirty or damaged Dry evaporator first then check ...

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Page 226: ...226 Part Number Preliminary 6 11 This Page Intentionally Left Blank ...

Page 227: ...h like a heartbeat The two green lights are located on the top right corner of the control board Display Diagnostics 1 Micro light flashes and display light is off 2 Disconnect and reconnect both ends of the communication cable running between the control board and the back of the display module 3 Press the power button on the display and watch the green Display light on the control board A Displa...

Page 228: ...following keystrokes on the display Press Menu scroll down to Service and press right arrow Scroll down to Diagnostics and press right arrow Display reads Control Board press right arrow Display reads Self Check press right arrow to start control board test The control board performs a self test As the test progresses the display will show Checkmarks at the top left of the display screen When the ...

Page 229: ...Test press the right arrow 4 Test the functionality of all buttons on the touch pad NOTE Pushing the power button will start and stop the ice machine Testing it last will allow the ice machine to continue running a freeze cycle As you press the buttons the first letter of the corresponding word will flash indicating the push button is operating correctly Press the right arrow 5 times rapidly to ex...

Page 230: ...ress the right arrow and select Diagnostics Display reads Control Board press right arrow Scroll down to enbl relays and press right arrow to start control board test 3 The control board will energize all relays and the red light next to the relay The red light indicates the relay coil is energized 4 Test for line voltage at the individual components A Line voltage is present and the component is ...

Page 231: ...ton 4 Press the Down arrow until Service is highlighted 5 Press the Checkmark The Service menu will be displayed 6 Press the Down arrow until USB Setup is highlighted 7 Press the Checkmark USB Stick will appear highlighted 8 Press the Checkmark again A submenu with Download Frm Download Firmware appears 9 Ensure that Download Frm is highlighted and press the Checkmark A display of instructions wil...

Page 232: ...ersion number RT Harvest Compressor LT Harvest Pump Water Dump Display Light Micro Light Clean Light Harvest Light SL 1 Light SL 2 Light Fuse Thermistors T1 T2 T3 T4 Display RS485 Bin LED Water Level Probe AuCS Remote CVD LuminIce Transformer Battery Bin Switches Bin Thermostat USB Ice Thickness Probe Light Water Level Probe Light Right Bin Switch Light Left Bin Switch Light Dump Valve HPC Ice Thi...

Page 233: ... The Service menu will be displayed 5 Press the Down arrow until USB Setup is highlighted 6 Press the Checkmark USB Stick will appear highlighted 7 Press the Checkmark again A submenu with Export ALL and Export Setup appears 8 Highlight Export ALL or Export Setup depending on your requirements and press the Checkmark A display of instructions will appear 9 Follow these on screen instructions to A ...

Page 234: ...ay RS485 Bin LED Water Level Probe AuCS Remote CVD LuminIce Transformer Battery Bin Switches Bin Thermostat USB Ice Thickness Probe Light Water Level Probe Light Right Bin Switch Light Left Bin Switch Light Dump Valve HPC Ice Thickness Probe Water Pump Compressor L1 Not Used L2 Water Inlet Valve Right Harvest Valve Left Harvest Valve Dump Valve Relay Lights V C LPC HPC1 HPC2 CVD Contactor USB Conn...

Page 235: ...r curtain ice dampers closed the fuse is good 2 Remove the fuse Check for continuity across the fuse with an ohmmeter Warning High line voltage is applied to the control board terminals 55 and 56 at all times Removing the control board fuse or pressing the On Off button will not remove the power supplied to the control board Warning Disconnect electrical power to the entire ice machine before proc...

Page 236: ...e machine shuts off The ice machine remains off until enough ice is removed from the storage bin to allow the sheet of cubes to drop clear of the water curtain ice dampers As the water curtain ice dampers swing back to the operating position the bin switch closes and the ice machine restarts provide the 3 minute delay has expired SPECIFICATIONS The bin switch is a magnetically operated reed switch...

Page 237: ...le evaporator models DIAGNOSTICS 1 Verify bin switch damper and damper magnet are in place Press the Menu button Scroll down to Service and press right arrow Scroll down to Diagnostics and press right arrow Scroll down to Inputs and press right arrow to display curtain switch readings Curt SW1 Curt SW2 etc 2 Open and close the ice damper s repeatedly while observing the display and control board l...

Page 238: ...the power button and observe the display and control board lights A Curtain switch closes control board light energizes and ice machine starts Replace bin switch B Curtain switch remains open and control board light is off Verify procedure was correctly followed Test all switches on multiple evaporator ice machines Replace control board ...

Page 239: ...ve Safety Shut Off In the event of a water level probe failure this feature limits the water inlet valve to a six minute on time Regardless of the water level probe input the control board automatically shuts off the water inlet valve if it remains on for 6 continuous minutes Freeze Cycle Operation During the Freeze cycle the water inlet valve energizes and de energizes in conjunction with the wat...

Page 240: ...nect power If water continues to flow verify water pressure is below 80 psig before replacing the water inlet valve Step 3 Check water level probe mounting and verify secure wiring connections at the probe and control board Step 4 Scroll to Service Diagnostics Inputs and press down arrow until Wtr Low and Wtr High are displayed No is displayed Control board is not receiving a sensing water signal ...

Page 241: ...place control board WATER TROUGH OVERFILLING CONTINUED Step 6 Water level probe wires 2 3 jumpered at the control board connector Is Water Flowing into the Water Trough The Water Level Light Is The Water Inlet Valve Solenoid Coil Is Cause No On De energized The interconnecting wire or water level probe is causing the problem Ohm then clean or replace the water level probe or wire Yes Off Energized...

Page 242: ...d Wtr High are displayed A Yes is displayed Control board is receiving a sensing water signal Proceed to step 3 B No is displayed Control board is not receiving a sensing water signal Proceed to Control Board Diagnostics page 228 Step 3 Disconnect water level probe observe LCD display text A No is displayed Clean the water level probe and test interconnecting wiring B Yes is displayed Refer to Con...

Page 243: ...e machine control system incorporates a freeze time lock in feature This prevents the ice machine from short cycling in and out of harvest The control board locks the ice machine in the freeze cycle and a harvest cycle can not start for six minutes Maximum Freeze Time The control system includes a built in safety which will automatically cycle the ice machine into harvest after 60 minutes in the f...

Page 244: ...It should be about 1 8 in 32 mm thick 2 If adjustment is necessary turn the ice thickness probe adjustment screw clockwise to increase bridge thickness or counterclockwise to decrease bridge thickness Set a 9 32 gap between the ice thickness probe and evaporator as a starting point Then adjust to achieve 1 8 ice thickness 3 Make sure the ice thickness probe wire and the bracket do not restrict mov...

Page 245: ...e doesn t start Freeze cycles are slower than published cycle times ICE MACHINE CYCLES INTO HARVEST BEFORE ICE CONTACTS THE ICE THICKNESS PROBE 1 Reboot the control board by disconnecting and reconnecting line voltage to the ice machine 2 Verify ice thickness probe gap is approximately 9 32 7 mm 3 Wait six minutes Ice Machine remains in freeze cycle Allow ice machine to run Ice machine cycles into...

Page 246: ... freeze cycle will start after the manual harvest cycle is complete 1 Reboot the control board by disconnecting and reconnecting line voltage to the ice machine 2 Verify ice thickness probe gap is approximately 9 32 7 mm 3 Wait for ice to contact the ice thickness probe Ice Machine cycles into harvest normally Allow ice machine to run Ice machine will not cycle into harvest Replace ice thickness p...

Page 247: ...ch point the ice machine attempts a restart If the HPCO is closed the ice machine will continue to run If the HPCO remains open after the 10 minute delay or reopens when the compressor starts the ice machine will start another 10 minute delay period The ice machine will lockout after 10 failed attempts 1 Machine is off and the display indicates Delay XX min HPCO Active 2 Machine is running and the...

Page 248: ...w cut in replace HPCO Above cut in find root cause problem 3 Wait for the 10 minute delay to end The ice machine will go to an initial start sequence When the compressor relay closes the control board checks the HPCO A HPCO is open Another 10 minute delay period starts B HPCO closed A 3 5 minute harvest cycle starts followed by an ice making cycle 4 Run the system to see if the control trips at th...

Page 249: ... one time event it may be intermittent and caused by conditions around the unit changing For example High ambient temperature water turned off to condenser water cooled unit etc 3 Run the system to see if the control trips at the rated pressure If HPCO opens at a pressure significantly lower than the control setting of 440 psig replace the HPCO 4 If the control opens at the correct pressure 10 lbs...

Page 250: ...below setpoint CHECK PROCEDURE 1 Connect manifold gauges at suction and discharge access valves and verify refrigerant pressure exceeds LPCO cut in 2 Navigate to LPCO input on display Press the Menu button Scroll down to Service and press right arrow Scroll down to Diagnostics and press right arrow Scroll down to Inputs and press right arrow to display LPCO reading 3 LPCO display indicates A Open ...

Page 251: ...ges to ice machine 3 Hook voltmeter in parallel across the fan cycle control leaving wires attached 4 Refer to chart below Specifications Model Cut In Close Cut Out Open I0300 I0320 I0520 I0450 I0500 I0600 I0850 ICVD0695 ICVD0895 ICVD1095 ICVD1195 ICVD1295 ICVD1495 ICVD1895 ICVD2095 ICVD3095 250 5 1723 kPa 34 17 23 bar 34 200 5 1517 kPa 34 15 17 bar 34 I1000 I1400 I1800 ICVD3095 275 psig 5 1896 kP...

Page 252: ... 160 70 98 930 10 20 50 68 98 930 62 015 20 30 68 86 62 015 39 695 30 40 86 104 39 695 25 070 40 50 104 122 25 070 17 481 50 60 122 140 17 481 11 860 60 70 140 158 11 860 8 1900 70 80 158 176 8 1900 5 7530 80 90 176 194 5 7530 4 1015 90 100 194 212 4 1015 2 9735 100 110 212 230 2 9735 2 1885 110 120 230 248 2 1885 1 6290 120 130 248 266 1 6290 1 2245 130 140 266 284 1 2245 0 9319 140 150 284 302 0...

Page 253: ...temperature sensor located near the compressor T2 Remote Condenser or Remote Condensing Unit Models Liquid line temperature sensor located at the outlet of the receiver T3 Single Expansion Valve Models Suction line temperature sensor located at the inlet of the evaporator T3 Multiple Evaporator Models Suction line temperature sensor located at the outlet of evaporator 1 T4 Single Expansion Valve M...

Page 254: ...75 F 246 C Thermistor Test 1 Disconnect thermistor from control board and measure resistance 2 Measure temperature at the thermistor 3 Compare measured resistance temperature readings to resistance temperature relationship chart A Within 10 of the published resistance value Thermistor is good B Not within 10 of the published resistance value Thermistor is defective Control Board Test 1 Disconnect ...

Page 255: ...cles SPECIFICATIONS 115 Volt or 230 Volt matches the ice machine voltage CHECK PROCEDURE 1 The air pump is wired in parallel with the harvest valve Verify the ice machine is in the harvest cycle and the harvest valve is energized 2 If there is voltage at the air pump connector use a volt ohm meter to verify there is no continuity through the motor windings then replace motor ...

Page 256: ...s from the compressor terminals 2 The resistance values between C and S and between C and R when added together should equal the resistance value between S and R 3 If the overload is open there will be a resistance reading between S and R and open readings between C and S and between C and R Allow the compressor to cool then check the readings again THREE PHASE COMPRESSORS 1 Disconnect power and r...

Page 257: ...draw while the compressor is trying to start The two likely causes of this are a defective starting component and a mechanically seized compressor To determine which you have 1 Install high and low side gauges 2 Try to start the compressor 3 Watch the pressures closely A If the pressures do not move the compressor is seized Replace the compressor B If the pressures move the compressor is turning s...

Page 258: ... capacitor Use a capacitor tester when checking a suspect capacitor Clip the bleed resistor off the capacitor terminals before testing If the compressor attempts to start or hums and trips the overload protector check the starting components before replacing the compressor Visual evidence of capacitor failure can include a bulged terminal end or a ruptured membrane Do not assume a capacitor is goo...

Page 259: ...ge generated by the start winding and opens the contacts as the compressor motor starts The contacts remain open until the compressor is de energized RELAY OPERATION CHECK 1 Disconnect wires from relay terminals 2 Verify the contacts are closed Measure the resistance between terminals 1 and 2 No continuity indicates open contacts Replace the relay 3 Check the relay coil Measure the resistance betw...

Page 260: ... must be cooled before attempting to start the compressor otherwise the PTCR will heat up too quickly and stop current flow through the start winding before the compressor motor reaches full speed NOTE If a PTCR is dropped internal damage can occur to the ceramic PTCR discs The ceramic disc can chip and cause arcing which leads to PTCR failure Since there is no way to open the PTCR in order to det...

Page 261: ...ot change a PTCR just because it is hot 2 Wait at least 10 minutes for the PTCR to cool to room temperature 3 Remove the PTCR from the ice machine 4 Measure the resistance of the PTCR as shown The resistance reading must be between Two Terminal PTCR 18 to 40 ohms Three Terminal PTCR 8 to 22 ohms Three Terminal PTCR Measure Resistance At Ends Two Terminal PTCR Leave Jumper Wire Attached Measure Res...

Page 262: ...262 Part Number Preliminary 6 11 This Page Intentionally Left Blank ...

Page 263: ...tions at night and or fails whenever the outdoor temperature drops A Safety limit is stored in control board memory Refrigerant loss and ambient temperature are directly related to each other As the ambient temperature drops more refrigerant is stored in the condenser When the refrigerant charge and ambient temperature create an undercharge of refrigerant in the freeze cycle the receiver dip tube ...

Page 264: ...ol dome s nitrogen charge closes the condenser port and opens the bypass port from the compressor discharge line In this modulating mode the valve maintains minimum head pressure by building up liquid in the condenser and bypassing discharge gas directly to the receiver Harvest Cycle Operation Remote Condenser Models The head pressure control cycles into full bypass due to the pressure drop when t...

Page 265: ... and the condenser fan motor cycles off at ambient temperatures above 110 F 43 C the condenser fan motor remains energized The warm discharge gas adds heat to the receiver in the harvest cycle Without this additional heat the head pressure would continue to drop as liquid refrigerant boils off in the receiver Example A service technician removes refrigerant vapor from a cylinder by boiling off the...

Page 266: ...gathered refer to the chart NOTE A head pressure control valve that will not bypass will function properly with condenser air temperatures of approximately 70 F 21 C or above When the temperature drops below 70 F 21 C the head pressure control valve fails to bypass and the ice machine malfunctions Lower ambient conditions can be simulated by rinsing the condenser with cool water during the freeze ...

Page 267: ...e receiver runs out of liquid refrigerant A safety limit 2 will result when the ice machine is unable to harvest Undercharge Symptoms Safety limit 1 or Safety limit 2 in control board memory Harvest cycle suction pressure is low Harvest cycle discharge pressure is low Liquid line entering receiver feels warm to hot in the freeze cycle Overcharge Symptoms Safety limit 2 in control board memory Harv...

Page 268: ...ratures above 32 F but fails at temperatures below 32 F Harvest cycle suction pressure is low Harvest cycle discharge pressure is normal or slightly low Procedure 1 Freeze cycle operation must be normal before diagnosing the headmaster in the harvest cycle Refer to Cycle Times 24 hr Ice Production Refrigerant Pressure Chart 2 Allow the ice machine to run a normal freeze cycle do not initiate an ea...

Page 269: ...iver feel the same 30 seconds into the harvest cycle The headmaster is functioning correctly The compressor discharge line is noticeably warmer than the liquid line to the ice machine receiver Headmaster valve is not bypassing 100 Replace headmaster valve Refrigerant Flow No F lo w Step 3 Details Grasp Here with Hands to Compare Temperatures LIQUID LINE FROM CONDENSER ...

Page 270: ...ically operated valve which opens when energized and closes when de energized Harvest pressure regulating valve HPR valve This is a pressure regulating valve which modulates open and closed based on the refrigerant pressure at the outlet of the valve The valve closes completely and stops refrigerant flow when the pressure at the outlet rises above the valve setting INLET OUTLET FLOW HPR SOLENOID S...

Page 271: ...tion pressure high enough to sustain heat for the harvest cycle without allowing refrigerant to condense to liquid in the evaporator In general harvest cycle suction pressure rises then stabilizes in the range of 70 100 psig 517 758 kPa Exact pressures vary from model to model Refer to cycle time 24 hour ice production and operational pressure charts HPR DIAGNOSTICS Steps 1 through 4 can be quickl...

Page 272: ...essure and freeze harvest cycle times Refer to Freeze Cycle Refrigeration System Operational Analysis Tables for data collection detail page 144 5 Discharge line temperature is greater than 150 F 66 C I0850 I1000 Air Water Only 140 F 60 C at the end of the freeze cycle See Discharge Line Temperature Analysis on page 176 6 Freeze cycle Head Pressure is in the range indicated in the cycle time 24 ho...

Page 273: ...ase discharge pressure 4 Determine the temperature of the liquid line entering the receiver by feeling it This line is normally warm body temperature 5 Using the information gathered refer to the list for diagnosis Problem Freeze Cycle Valve not maintaining discharge pressure Valve incorrectly set dirty or defective Adjust clean or replace valve Discharge pressure extremely high Liquid line enteri...

Page 274: ...ring the harvest cycle CHECK PROCEDURE 1 Reset the ice machine with the power button to over ride the 6 minute freeze lock 2 Initiate a manual harvest cycle 3 Verify the coil has line voltage supplied in the harvest cycle and magnetism is present 4 If voltage and magnetism are present refer to Quad evaporator operational analysis chart page 153 ...

Page 275: ...he freeze cycle The suction accumulator empties within the first 5 minutes of the freeze cycle When the refrigeration affect ends liquid refrigerant has been removed the suction line between the accumulator and compressor will increase in temperature The suction line temperature increases 20 plus degrees within 2 minutes after the liquid has been removed The time needed to remove the liquid refrig...

Page 276: ...ake these connections Suction side of the compressor through the suction service valve Discharge side of the compressor through the discharge service valve Important Manitowoc assumes no responsibility for the use of contaminated refrigerant Damage resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company Important Replace the liquid line drier after re...

Page 277: ...covery or evacuation A Recovery Operate the recovery unit as directed by the manufacturer s instructions B Evacuation prior to recharging Pull the system down to 500 microns Then allow the pump to run for an additional half hour Turn off the pump and perform a standing vacuum leak check 4 Follow the Charging Procedures MANIFOLD SET OPEN VACUUM PUMP RECOVERY UNIT CLOSED OPEN LOW SIDE ACCESS VALVE H...

Page 278: ... machine is off Important The charge is critical on all Manitowoc ice machines Use a scale to ensure the proper charge is installed MANIFOLD SET CLOSED SCALE VACUUM PUMP RECOVERY UNIT OPEN CLOSED LOW SIDE ACCESS VALVE HIGH SIDE ACCESS VALVE OPEN REFRIGERANT CYLINDER CHARGING CONNECTIONS ...

Page 279: ...h the suction service valve if necessary NOTE Manifold gauges must be removed properly to ensure that no refrigerant contamination or loss occurs 9 Make sure that all of the vapor in the charging hoses is drawn into the ice machine before disconnecting the charging hoses A Run the ice machine in freeze cycle B Remove the high side low loss fitting from the access valve C Open the high and low side...

Page 280: ...s recommendations Important Manitowoc Ice assumes no responsibility for the use of contaminated refrigerant Damage resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company Important Replace the liquid line drier after recovering the refrigerant and before evacuating and recharging Use only a Manitowoc O E M liquid line filter drier to prevent voiding t...

Page 281: ...on the outside of the compressor evaporator compartment This connection evacuates the condenser Without it the magnetic check valves would close when the pressure drops during evacuation preventing complete evacuation of the condenser NOTE Manitowoc recommends using an access valve core removal and installation tool on the discharge line quick connect fitting This permits access valve core removal...

Page 282: ...nifold gauge set 4 Perform recovery or evacuation A Recovery Operate the recovery unit as directed by the manufacturer s instructions B Evacuation prior to recharging Pull the system down to 500 microns Then allow the pump to run for an additional hour Turn off the pump and perform a standing vacuum leak check NOTE Check for leaks with an electronic leak detector after charging the ice machine 5 F...

Page 283: ...Part Number Preliminary 6 11 283 ACCESS REMOTE RECOVERY EVACUATION CONNECTIONS ...

Page 284: ...nifold gauge set and start the ice machine Add the remaining charge through the low side in vapor form until the machine is fully charged NOTE If an access valve core removal and installation tool is used on any of the Schraeder valves reinstall the cores before disconnecting the access tool and hose 4 Open the high and low side valves on the manifold gauge set Any refrigerant in the lines will be...

Page 285: ...LE RECOVERY UNIT VACUUM PUMP ACCESS VALVE RECEIVER MANIFOLD SET OPEN DRIER SOLENOID LINE VALVE REGULATING PRESSURE HARVEST LIQUID ACCESS VALVE CHECK VALVE TEE OPEN C B R HIGH SIDE ACCESS VALVE LOW SIDE COMPRESSOR HARVEST PRESSURE SOLENOID VALVE VALVE EXPANSION VALVE CHECK STRAINER VALVE SOLENOID HEAT EXCHANGER EVAPORATOR REMOTE CHARGING CONNECTIONS ...

Page 286: ...nly a Manitowoc OEM liquid line filter drier to prevent voiding the warranty Warning Recovery evacuation of a QuietQube remote system requires connections at five points for complete system recovery evacuation Check valves are located in the ice machine head section and the ICVD condensing unit Five point requires connections between the compressor and suction filter access valve receiver access v...

Page 287: ...ressor through the suction shut off valve or suction access valve 2 Discharge side of the compressor through the liquid line shut off valve or high side access valve 3 Receiver access valve both receiver service valves on S3070C fastest recovery time which evacuates the area between the check valve in the liquid line and the liquid line solenoid valve 4 Compressor discharge access valve 5 Suction ...

Page 288: ...ce machine head section must be accessed during refrigerant recovery to allow complete removal of the refrigerant charge CONNECTIONS MUST BE MADE AT THREE POINTS FOR COMPLETE REFRIGERANT RECOVERY ON ALL QUIETQUBE MODELS Refrigerant Recovery Connections Ice Machine Head CONNECTIONS MUST BE MADE AT TWO ADDITIONAL POINTS ON CONDENSING UNIT ...

Page 289: ...gauges charging scale and recovery unit or two stage vacuum pump 3 Open high and low side on the manifold gauge set 4 Perform recovery or evacuation A Recovery Operate the recovery unit as directed by the manufacturer s instructions B Pressure test the system C Evacuation prior to recharging Evacuate to 500 microns Then allow the pump to run for an additional hour 5 Refer to Charging Procedures ...

Page 290: ...harge through valves on back of ice making head or through valves on suction filter 5 Run the ice machine in the freeze cycle 6 Close the receiver service valve in the ice machine head section 7 Disconnect the manifold gauge set from the liquid line shut off valve 8 Open the high and low side valves on the manifold gauge set Any refrigerant in the lines will be pulled into the low side of the syst...

Page 291: ...Part Number Preliminary 6 11 291 This Page Intentionally Left Blank ...

Page 292: ... diagnostic tool These devices sample refrigerant eliminating the need to take an oil sample Follow the manufacturer s directions If a refrigerant test kit indicates harmful levels of contamination or if a test kit is not available inspect the compressor oil 1 Remove the refrigerant charge from the ice machine 2 Remove the compressor from the system 3 Check the odor and appearance of the oil 4 Ins...

Page 293: ... shows contamination Leak in water cooled condenser No burnout deposits in open compressor lines Mild contamination cleanup procedure Mild Compressor Burnout symptoms Oil appears clean but smells acrid Refrigeration test kit or acid oil test shows harmful acid content No burnout deposits in open compressor lines Mild contamination cleanup procedure Severe Compressor Burnout symptoms Oil is discolo...

Page 294: ...0 microns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 5 psig 35 kPa 35 bar B Pull vacuum to 500 microns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 5 psig 35 kPa 35 bar C Change the vacuum pump oil D Pull vacuum to 500 microns Run the vacuum pump for 1 2 hour on self contained models 1 hour on remotes NOTE You may perfor...

Page 295: ...suction and discharge lines at compressor 4 Sweep through the open system with dry nitrogen 5 Install a new compressor and new start components 6 Install a suction line filter drier with acid and moisture removal capability Place the filter drier as close to the compressor as possible 7 Install an access valve at the inlet of the suction line drier 8 Install a new liquid line drier and suction fil...

Page 296: ...ke a preliminary leak check You should use an electronic leak detector after system charging to be sure there are no leaks 10 Charge the system with the proper refrigerant to the nameplate charge 11 Operate the ice machine for one hour Then check the pressure drop across the suction line filter drier A If the pressure drop is less than 1 psig 7 kPa 7 bar the filter drier should be adequate for com...

Page 297: ...he tubing as far from the pressure control as feasible See the figure on next page Clamp down on the tubing until the pinch off is complete 3 Cut the tubing of the defective component with a small tubing cutter 4 Solder the replacement component in place Allow the solder joint to cool 5 Remove the pinch off tool 6 Re round the tubing Position the flattened tubing in the proper hole in the pinch of...

Page 298: ...298 Part Number Preliminary 6 11 USING PINCH OFF TOOL ...

Page 299: ...th the inlet and outlet ends This is very important because ice machines have a back flushing action that takes place during every Harvest cycle A Manitowoc filter drier has high moisture and acid removal capability The size of the filter drier is important The refrigerant charge is critical Using an improperly sized filter drier will cause the ice machine to be improperly charged with refrigerant...

Page 300: ...ion filter on QuietQube ICVD condensing units traps particulate only and do not contain a desiccant The filter needs replacement when 1 The pressure drop across the drier exceeds 2 psig 2 A compressor is replaced 3 Refrigeration system contains contaminants ...

Page 301: ...information overrides information listed on these pages Model Air Cooled Water Cooled Remote Additional Refrigerant for Line Sets 51 100 Maximum System Charge I0300 15 oz 12 oz NA NA NA I0320 20 oz 18 oz NA NA NA I0450 20 oz 14 oz NA NA NA I0500 24 oz 23 oz 6 lb 1 5 lb 7 5 lb I0520 22 oz 14 oz NA NA NA I0600 32 oz 28 oz 6 5 lb 1 5 lb 8 lb I0850 34 oz 26 oz 8 5 lb 2 lb 10 5 lb I1000 36 oz 28 oz 7 l...

Page 302: ...harge Serial plate information overrides information listed on this page Model Condensing Unit Refrigerant Charge Line Set Length I0680C I0680C IB0690C ICVD0695 11 lbs 5 kg 0 100 ft 0 30 M I0870C ICVD0895 11 lbs 5 kg 0 50 ft 0 15 M 12 lbs 5 44 kg 51 100 ft 15 30 M IB0890C ICVD0895 11 lbs 5 kg 0 100 ft 0 30 M I1070C ICVD1095 10 lbs 4 5 kg 0 50 ft 0 15 M 11 lbs 5 kg 51 100 ft 15 30 M IB1090C ICVD119...

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Page 304: ...304 Part Number Preliminary 6 11 ...

Page 305: ...Part Number Preliminary 6 11 305 This Page Intentionally Left Blank ...

Page 306: ...306 Part Number Preliminary 6 11 This Page Intentionally Left Blank ...

Page 307: ...y Refer to Symptom 2 Operational Analysis Table page 144 for the list of data that must be collected for refrigeration diagnostics This list includes before beginning service ice production check installation visual inspection water system checklist ice formation pattern safety limits comparing evaporator inlet outlet temperatures discharge and suction pressure analysis Zero out manifold gauge set...

Page 308: ...3 16 2 19 2 110 43 15 0 17 7 15 8 18 7 17 7 20 9 Air Temp Entering Condenser F C Water Temperature F C1 1 Based on average ice slab weight of 2 40 2 80 lb 50 10 70 21 90 32 70 21 310 280 250 80 27 285 250 230 90 32 260 225 210 100 38 235 215 195 110 43 210 200 180 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suctio...

Page 309: ... 11 8 14 0 12 9 15 3 Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 70 21 300 275 250 80 27 295 270 250 90 32 290 260 245 100 38 285 260 245 110 43 280 260 240 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG1 1 Suction pressure drops gradually throughout the freeze cycle ...

Page 310: ... 6 100 38 21 3 24 6 23 0 26 6 24 3 28 1 Air Temp Entering Condenser F C Water Temperature F C1 1 Based on average ice slab weight of 3 40 3 90 lb 50 10 70 21 90 32 70 21 335 285 270 80 27 285 260 240 90 32 250 225 215 100 38 215 200 190 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG1 1 Suction p...

Page 311: ... Around Ice Machine F C Water Temperature F C1 1 Based on average ice slab weight of 3 40 3 90 lb 50 10 70 21 90 32 70 21 330 290 270 80 27 320 280 260 90 32 310 270 250 100 38 300 260 240 110 43 290 250 230 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG 1 1 Suction pressure drops gradually thro...

Page 312: ... 9 16 6 19 3 110 43 16 3 18 9 17 7 20 5 19 3 22 4 Air Temp Entering Condenser F C Water Temperature F C1 1 Based on average ice slab weight of 3 40 3 90 lb 50 10 70 21 90 32 70 21 420 390 360 80 27 380 355 330 90 32 350 320 300 100 38 320 290 270 110 43 275 255 235 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Sucti...

Page 313: ...emp Entering Condenser F C Water Temperature F C1 1 Based on average ice slab weight of 3 40 3 90 lb 50 10 70 21 90 32 70 21 430 390 360 80 27 420 375 350 90 32 415 360 340 100 38 410 350 330 110 43 400 340 310 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG1 1 Suction pressure drops gradually th...

Page 314: ... 2 20 2 22 1 22 2 25 2 Air Temp Entering Condenser F C Water Temperature F C12 1 Based on average ice slab weight of 4 60 5 20 lb 2 230 50 1 is approximately 12 lower than 230 60 1 50 10 70 21 90 32 70 21 530 460 420 80 27 475 405 400 90 32 415 390 350 100 38 375 345 310 110 43 330 305 280 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Disc...

Page 315: ...5 16 6 19 0 Air Temp Around Ice Machine F C Water Temperature F C1 1 Based on average ice slab weight of 4 60 5 20 lb 50 10 70 21 90 32 70 21 550 450 395 80 27 495 435 390 90 32 480 430 385 100 38 470 420 375 110 43 460 415 365 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG 1 1 Suction pressure ...

Page 316: ... 110 43 13 3 15 4 14 5 16 7 16 0 18 5 Air Temp Entering Condenser F C Water Temperature F C1 1 Based on average ice slab weight of 4 60 5 20 lb 50 10 70 21 90 32 20 29 to 70 21 480 445 415 90 32 455 430 390 100 38 440 405 375 110 43 425 395 360 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG1 1 S...

Page 317: ...2 16 6 19 3 110 43 15 4 17 9 16 6 19 3 18 1 21 0 Air Temp Entering Condenser F C Water Temperature F C1 1 Based on average ice slab weight of 3 40 3 90 lb 50 10 70 21 90 32 70 21 475 420 370 80 27 430 380 320 90 32 400 325 290 100 38 350 300 270 110 43 290 270 250 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suctio...

Page 318: ...13 3 15 5 Air Temp Around Ice Machine F C Water Temperature F C1 1 Based on average ice slab weight of 3 4 3 9 lb 50 10 70 21 90 32 70 21 460 395 370 80 27 450 385 360 90 32 440 375 350 100 38 430 365 340 110 43 420 355 330 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG1 1 Suction pressure drops...

Page 319: ... 4 100 38 11 1 13 1 12 3 14 4 12 8 15 0 Air Temp Entering Condenser F C Water Temperature F C1 1 Based on average ice slab weight of 4 12 4 75 lb 50 10 0 70 21 1 90 32 2 70 21 650 540 505 80 27 575 520 495 90 32 530 475 460 100 38 470 430 415 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG1 1 Suc...

Page 320: ...Machine F C Water Temperature F C1 1 Based on average ice slab weight of 4 12 4 75 lb 50 10 70 21 90 32 70 21 650 565 530 80 27 575 560 520 90 32 565 560 520 100 38 560 540 505 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG 1 1 Suction pressure drops gradually throughout the freeze cycle 2 Water...

Page 321: ... 14 0 12 8 15 0 Air Temp Entering Condenser F C Water Temperature F C12 1 Based on average ice slab weight of 4 12 4 75 lb 2 Ratings with JC0895 condenser dice cubes 50 10 70 21 90 32 20 29 to 70 21 630 520 495 80 27 565 520 485 90 32 560 520 485 100 38 520 480 450 110 43 480 440 415 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge ...

Page 322: ... 38 11 0 12 6 12 2 13 9 13 4 15 3 110 43 12 0 13 8 13 4 15 3 14 9 17 0 1Times in minutes Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 20 to 70 29 to 21 650 540 480 90 32 560 505 475 100 38 530 485 445 110 43 490 445 405 1Based on average ice slab weight of 4 60 5 20 lb Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure psig Suction Pressure psi...

Page 323: ... 0 100 38 10 2 11 8 11 1 12 8 12 2 13 9 110 43 11 0 12 6 12 0 13 8 13 2 15 1 1Times in minutes Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 20 to 70 29 to 21 640 600 560 80 27 615 575 535 90 32 595 555 515 100 38 565 525 485 110 43 530 490 450 1Based on average ice slab weight of 4 60 5 20 lb Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure p...

Page 324: ... 7 14 6 16 7 110 43 14 9 17 0 15 8 18 0 16 5 18 8 Air Temp Entering Condenser F C Water Temperature F C1 1 Based on average ice slab weight of 5 75 6 50 lb 50 10 70 21 90 32 70 21 785 735 690 80 27 715 675 630 90 32 645 575 575 100 38 575 545 515 110 43 505 480 460 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Sucti...

Page 325: ...ne F C Water Temperature F C1 1 Based on average ice slab weight of 5 75 6 50 lb 50 10 70 21 90 32 70 21 835 755 680 80 27 810 740 665 90 32 780 640 655 100 38 755 700 645 110 43 730 680 635 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG 1 1 Suction pressure drops gradually throughout the freeze...

Page 326: ...9 14 1 16 2 110 43 12 8 14 6 13 8 15 8 14 9 17 0 Air Temp Entering Condenser F C Water Temperature F C1 1 Based on average ice slab weight of 5 75 6 5 lb 50 10 70 21 90 32 20 29 to 70 21 750 665 615 80 27 720 675 650 90 32 645 610 555 100 38 615 570 530 110 43 580 540 505 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSI...

Page 327: ...539 18 2 110 43 14 9 16 9 15 8 18 0 16 9 19 3 1Times in minutes Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 20 to 70 29 to 21 665 610 555 90 32 590 580 505 100 38 550 510 475 110 43 510 480 450 1Based on average ice slab weight of 5 75 6 50 lb Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure psig Suction Pressure psig Discharge Pressure psig...

Page 328: ...4 5 13 4 15 8 14 7 17 4 Air Temp Entering Condenser F C Water Temperature F C12 1 Based on average ice slab weight of 6 2 7 2 lb 2 230 50 1 is approximately 12 lower than 230 60 1 50 10 70 21 90 32 70 21 990 920 870 80 27 900 830 780 90 32 810 735 690 100 38 730 665 620 110 43 650 600 550 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Disch...

Page 329: ...F C Water Temperature F C1 1 Based on average ice slab weight of 6 2 7 2 lb 50 10 70 21 90 32 70 21 1000 895 820 80 27 980 875 810 90 32 960 855 800 100 38 950 845 790 110 43 940 835 780 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG 1 1 Suction pressure drops gradually throughout the freeze cyc...

Page 330: ...2 4 14 7 110 43 12 2 14 5 12 7 15 0 13 6 16 1 Air Temp Entering Condenser F C Water Temperature F C1 1 Based on average ice slab weight of 6 2 7 2 lb 50 10 70 21 90 32 70 21 960 870 800 80 27 880 800 740 90 32 800 725 680 100 38 720 670 630 110 43 640 620 580 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pre...

Page 331: ... 14 6 100 38 9 5 11 3 11 4 13 5 13 1 15 5 110 43 9 9 11 8 12 0 14 2 13 9 16 4 1Times in minutes Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 20 to 70 29 to 21 950 800 710 80 27 900 760 680 90 32 860 725 645 100 38 810 690 610 110 43 780 660 580 1Based on average ice slab weight of 6 2 7 2 lb Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure ps...

Page 332: ... 7 14 6 100 38 12 0 13 8 12 9 14 8 13 7 15 7 110 43 13 1 15 0 13 9 16 0 14 9 17 1 1Times in minutes Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 20 to 70 29 to 21 1000 930 860 80 27 930 860 810 90 32 870 790 760 100 38 800 750 710 110 43 740 700 660 1Based on average ice slab weight of 7 5 8 5 lb Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressu...

Page 333: ...1 16 8 Air Temp Entering Condenser F C Water Temperature F C12 1 Based on average ice slab weight of 7 5 8 25 lb 2 230 50 1 is approximately 12 lower than 230 60 1 50 10 70 21 90 32 70 21 1100 1035 965 80 27 1010 950 890 90 32 925 870 810 100 38 840 785 730 110 43 750 700 650 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure...

Page 334: ...F C Water Temperature F C1 1 Based on average ice slab weight of 7 25 8 25 lb 50 10 70 21 90 32 70 21 1165 1050 935 80 27 1040 935 830 90 32 1030 900 825 100 38 1020 870 820 110 43 1010 860 815 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG 1 1 Suction pressure drops gradually throughout the fre...

Page 335: ...number page 18 to reference the correct diagrams WIRING DIAGRAM LEGEND The following symbols are used on all of the wiring diagrams Internal Compressor Overload Some models have external compressor overloads Fan Motor Run Capacitor Some models do not incorporate fan motor run capacitor Wire Number Designation The number is marked at each end of the wire Multi Pin Connection Electrical Box Side Com...

Page 336: ...336 Part Number Preliminary 6 11 I0300 I0320 I0450 I0500 I0520 Self Contained Air Water cooled 1 Ph ...

Page 337: ...Part Number Preliminary 6 11 337 I0500 Remote Air cooled 1Ph ...

Page 338: ...338 Part Number Preliminary 6 11 I0600 I0850 I1000 I1200 Self Contained Air Water cooled 1 3 Ph ...

Page 339: ...Part Number Preliminary 6 11 339 I0600 I0850 I1000 Remote Condenser Air cooled 1 3 Ph ...

Page 340: ...340 Part Number Preliminary 6 11 I0670C I0870C I1070C I1270C QuietQube Remote Air cooled 1 3 Ph ...

Page 341: ...Part Number Preliminary 6 11 341 IB0690C IB0890C IB1090C QuietQube Remote Air cooled 1 3 Ph ...

Page 342: ...342 Part Number Preliminary 6 11 I1400 I1800 Self Contained Air Water cooled 1 3 Ph ...

Page 343: ...Part Number Preliminary 6 11 343 I1400 I1800 Remote Air cooled 1 3 Ph ...

Page 344: ...2 T3 T4 Display RS485 Bin LED Water Level Probe AuCS Remote CVD LuminIce Transformer Battery Bin Switches Bin Thermostat USB Ice Thickness Probe Light Water Level Probe Light Right Bin Switch Light Left Bin Switch Light Dump Valve HPC Ice Thickness Probe Water Pump Compressor L1 Not Used L2 Water Inlet Valve Right Harvest Valve Left Harvest Valve Dump Valve Relay Lights V C LPC HPC1 HPC2 CVD Conta...

Page 345: ... ONLY DRIER COMPRESSOR STRAINER CONDENSER AIR OR WATER HOT GAS SOLENOID VALVE EXPANSION VALVE EVAPORATOR HEAT EXCHANGER T1 Thermistor T4 Thermistor T3 Thermistor T2 Thermistor x x CONDENSER COMPRESSOR HEAT EXCHANGER RECEIVER DRIER EVAPORATOR HARVEST SOLENOID VALVE STRAINER HARVEST SOLENOID VALVE EXPANSION VALVE EXPANSION VALVE T2 Thermistor T3 Thermistor T4 Thermistor T1 Thermistor ...

Page 346: ...AS SOLENOID VALVE CONDENSER REMOTE EXPANSION VALVE EVAPORATOR HEAT EXCHANGER SOLENOID LINE LIQUID VALVE X X T2 Thermistor T4 Thermistor T1 Thermistor T3 Thermistor x x x REMOTE CONDENSER COMPRESSOR HEAT EXCHANGER RECEIVER DRIER EXPANSION VALVE EVAPORATOR HPR VALVE LLSV CHECK VALVE CHECK VALVE HARVEST SOLENOID VALVE STRAINER HARVEST SOLENOID VALVE HEAD PRESSURE CONTROL VALVE EXPANSION VALVE RECEIVE...

Page 347: ...UT OFF VALVE HEAT EXCHANGER CHECK VALVE HEAD PRESSURE CONTROL VALVE ACCUMULATOR TXV HARVEST VALVE COMPRESSOR EVAPORATOR LIQUID LINE SHUT OFF VALVE CONDENSER S TRAP REQUIRED 21 OR GREATER RISE DRIER SUCTION LINE FILTER Ice Machine Head Section Condensing Unit ACCESS VALVE CHECK VALVE T1 Thermistor T2 Thermistor T4 Thermistor T3 Thermistor ...

Page 348: ... HEAT EXCHANGER CHECK VALVE HEAD PRESSURE CONTROL VALVE ACCUMULATOR TXV HARVEST VALVE COMPRESSOR EVAPORATOR LIQUID LINE SHUT OFF VALVE CONDENSER S TRAP REQUIRED 21 OR GREATER RISE DRIER SUCTION LINE FILTER Ice Machine Head Section Condensing Unit ACCESS VALVE CHECK VALVE T1 Thermistor T2 Thermistor T4 Thermistor T3 Thermistor ...

Page 349: ......

Page 350: ...Manitowoc Ice 2110 South 26th Street P O Box 1720 Manitowoc WI 54221 1720 USA Ph 920 682 0161 Fax 920 683 7589 Visit us online at www manitowocice com 2011 Manitowoc Part Number Preliminary 6 11 ...

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