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Manitowoc Q210 series, Technician'S Handbook

Get your hands on the replacement manual for the Manitowoc Q210 series, available for free download on manualshive.com. This comprehensive manual provides step-by-step instructions, troubleshooting tips, and maintenance guidelines for your Q210 series machine. Enhance your product knowledge and ensure smooth operation with our easy-to-access user manual.

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Part Number 80-01111-9 7/10

Bin Switch Removal — QM45/Q130

1. Disconnect power to the ice machine at service 

disconnect.

2. Disconnect bin switch wires in control box.
3. Depress tab on right side of evaporator with 

thumb.

4. Slide bin switch to right to remove.
5. Pull wiring into evaporator compartment.

Bin Switch Removal

SV1731H

BIN SWITCH

TAB

Summary of Contents for Q210 series

Page 1: ...ted as new information and models are released Visit our website for the latest manual www manitowocice com America s 1 Selling Ice Machine Manitowoc QM20 QM30 QM45 SM50 Q130 Q170 Q210 Q270 Undercounter Ice Machines Part Number 80 01111 9 7 10 ...

Page 2: ......

Page 3: ...ing types of procedural notices NOTE Text set off as a Note provides you with simple but useful extra information about the procedure you are performing Warning Text in a W arning box alerts you to a potentia l personal inju ry situation Be sure to re ad th e Warning statement be fore procee ding an d work carefully Caution Text in a Ca ution box alerts you to a situation in which you could damage...

Page 4: ... not operate equipment that has been misused abused neglected damaged or altered modified from that of original manufactured specifications Warning POTENTIAL PERSONAL INJURY SITUATION This ice machin e con tains re frigerant ch arge Installation an d b razing of the line sets must b e performed by a prope rly trained refri geration technician aware of the Dangers of dealing with refrigerant charge...

Page 5: ...nty Coverage 17 Residential Warranty Coverage 20 INSTALLATION Location of Ice Machine 23 Ice Machine Clearance Requirements 24 Ice Machine Heat of Rejection 24 Leveling the Ice Machine 25 QM45 Q130 Q170 Q210 Q270 25 SM50 QM20 QM30 26 Electrical Requirements 27 Voltage 27 Electrical Specifications 28 Water Service Drains 31 Water Supply 31 Water Inlet Lines 31 Drain Connections 31 Cooling Tower App...

Page 6: ...rization 77 General 77 Air cooled Ice Machines 77 Water cooled Ice Machines 78 OPERATION QM45 Q130 Q170 Q210 Q270 79 Initial Start up or Start up After Automatic Shut off 79 Freeze Sequence 79 Harvest Sequence 80 Automatic Shut off 80 Energized Parts Chart 81 QM20 QM30 83 Initial Start up or Start up After Automatic Shut off 83 Freeze Sequence 83 Harvest Sequence 84 Automatic Shut off 84 Energized...

Page 7: ...aporator Inlet Outlet Temperatures 125 Discharge Line Temperature Analysis 126 Refrigeration Component Diagnostic Chart 128 Final Analysis 130 Refrigeration Component Diagnostic Chart 131 QM20 QM30 134 Diagnosing an Ice Machine that Will Not Run 134 Refrigeration Diagnostics 135 Ice Formation Pattern 137 QM45 139 Electrical 139 Refrigeration Diagnostics 140 Flooding Expansion Valve 143 Starving Ex...

Page 8: ...Q210 Q270 160 Bin Thermostat 164 QM20 QM30 164 SM50 166 Liquid Line Thermistor 169 QM20 QM30 SM50 169 Diagnosing Start Components 171 Capacitor 171 Relay 171 ON OFF WASH Toggle Switch 172 Function 172 Specifications 172 Check Procedure 172 QM45 Q130 Q170 Q210 Q270 173 QM20 QM30 173 Ice Thickness Probe 174 QM45 Q130 Q170 Q210 Q270 174 Ice Thickness Check 175 Compressor Electrical Diagnostics 176 Ch...

Page 9: ...leanup Procedure 192 Severe System Contamination Cleanup Procedure 193 Replacing Pressure Controls without Removing Refrigerant Charge 194 Q270 Condenser Fan Motor Replacement 196 Brazing Procedures for Danfoss Solenoid Valves 197 COMPONENT SPECIFICATIONS Main Fuse 199 Bin Switch 199 QM45 Q130 Q170 Q210 Q270 199 Bin Thermostat 199 QM20 QM30 SM50 199 ON OFF WASH Toggle Switch 199 Fan Control Cycle ...

Page 10: ...ir cooled Before Serial Number 310047287 209 Q130 Self contained Air cooled After Serial Number 310047287 210 Q130 Self contained Water cooled 211 Q170 Self contained Air cooled 212 Q210 Self contained Air cooled 213 Q210 Self contained Water cooled 214 Q270 Self contained Air cooled 215 Q270 Self contained Water cooled 216 DIAGRAMS Wiring Diagrams 217 QM20 218 QM30 219 QM30 220 QM45 221 SM50 222 ...

Page 11: ...45A N A SM50A N A QR0130A QR0131W QD0132A QD0133W QY0134A QY0135W QD0172A N A QY0174A N A QR0210A QR0211W QD0212A QD0213W QY0214A QY0215W QR0270A QR0271W QD0272A QD0273W QY0274A QY0275W Warning An ice machin e con tains h igh voltage electricity and refri gerant ch arge Rep airs are to b e performed by properly trained refri geration technicians aware of the dangers of d ealing with high vol tage ...

Page 12: ... use with Manitowoc products This cleaner must be used with all SM50 ice machines Evaporator damage will result with repeated use or high concentrations of P N 94 0565 3 cleaner with SM50 ice machines Cleaner Part Number Sanitizer Part Number 16 oz 94 0456 3 16 oz 94 0565 3 16 oz 000000084 1 Gallon 4 0580 3 1 Gallon 94 0581 3 A Air cooled W Water cooled 0 Regular Air cooled 1 Regular Water cooled ...

Page 13: ...ice damper that performs the functions of the water curtain see Ice Damper Removal Installation for Details Caution Use only Ma nitowoc app roved Ice Machine Cleaner part nu mber 9 4 0546 3 original gre en ice machin e cleaner or 000 000084 clea r met al safe ice ma chine clea ner a nd San itizer p art number 94 0565 3 It is a viola tion of Federal law to use th ese so lutions in a manner inconsis...

Page 14: ...ur local Manitowoc distributor service representative or Manitowoc Ice The model and serial number are listed on the OWNER WARRANTY REGISTRATION CARD They are also listed on the MODEL SERIAL NUMBER DECAL affixed to the ice machine Q130 Q170 Q210 Q270 Model Serial Number Location MODEL SERIAL NUMBER PLATE MODEL SERIAL NUMBER PLATE SV1687G ...

Page 15: ...Part Number 80 01111 9 7 10 15 QM20 QM30 QM45 MODEL SERIAL NUMBER PLATE MODEL SERIAL NUMBER PLATE SV1599 MODEL SERIAL NUMBER PLATE MODEL SERIAL NUMBER PLATE SV1732 ...

Page 16: ...16 Part Number 80 01111 9 7 10 SM50 MODEL SERIAL NUMBER PLATE ...

Page 17: ... local Manitowoc representative or Manitowoc Ice if you need further warranty information Parts Q130 Q170 Q210 Q270 1 Manitowoc warrants the ice machine against defects in materials and workmanship under normal use and service for three 3 years from the date of original installation 2 The evaporator and compressor are covered by an additional two 2 year five years total warranty beginning on the d...

Page 18: ...ications to the ice machine or use of non standard parts without prior written approval from Manitowoc Ice 3 Damage caused by improper installation of the ice machine electrical supply water supply or drainage or damage caused by floods storms or other acts of God 4 Premium labor rates due to holidays overtime etc travel time flat rate service call charges mileage and miscellaneous tools and mater...

Page 19: ...of the warranty a refrigeration service company qualified and authorized by your Manitowoc distributor or a Contracted Service Representative must perform the warranty repair Service Calls Normal maintenance adjustments and cleaning as outlined in this manual are not covered by the warranty ...

Page 20: ...ises and Manitowoc receives a valid warranty claim prior to the expiration of the warranty period Manitowoc shall at its option 1 repair the Product at Manitowoc s cost including standard straight time labor charges 2 replace the Product with one that is new or at least as functionally equivalent as the original or 3 refund the purchase price for the Product Replacement parts are warranted for 90 ...

Page 21: ...ITED WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY OF MANITOWOC WITH REGARD TO THE PRODUCT ALL IMPLIED WARRANTIES ARE STRICTLY LIMITED TO THE DURATION OF THE LIMITED WARRANTY APPLICABLE TO THE PRODUCTS AS STATED ABOVE INCLUDING BUT NOT LIMITED TO ANY WARRANTY OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE Some states do not allow limitations on how long an implied warranty lasts so the ab...

Page 22: ...warranty registration card must be completed and sent to Manitowoc within thirty 30 days from the sale date Complete the following registration card and send it to Manitowoc at the address shown above Retain a copy for your records HOW TO OBTAIN WARRANTY SERVICE To obtain warranty service or information regarding your Product please contact us at MANITOWOC ICE 2110 S 26th St P O Box 1720 Manitowoc...

Page 23: ...at least 50 F 10 C but must not exceed 110 F 43 C The location must not be near heat generating equipment or in direct sunlight The location must be capable of supporting the weight of the ice machine and a full bin of ice The location must allow enough clearance for water drain and electrical connections in the rear of the ice machine The location must not obstruct airflow through or around the i...

Page 24: ...ice making cycle the figure shown is an average Ice machines like other refrigeration equipment reject heat through the condenser It is helpful to know the amount of heat rejected by the ice machine when sizing air conditioning equipment where self contained air cooled ice machines are installed Self contained Air cooled Self contained Water cooled Top Sides 5 127 mm 5 127 mm Back 5 127 mm 5 127 m...

Page 25: ...unctions correctly Use a level on top of the ice machine Turn each foot as necessary to level the ice machine from front to back and side to side NOTE An optional 2 1 2 6 35 cm caster assembly is available for use in place of the legs on the Q130 Q170 Q210 Q270 or QM45 Installation instructions are supplied with the casters Leg Installation Caution The leg s must be screwe d in tightly to preven t...

Page 26: ... to check the levelness of the ice machine from front to back and from side to side 2 If the ice machine is not level adjust the leveling glides or legs on each corner of the base of the ice machine as necessary 3 Check the levelness of the ice machine after each adjustment 4 Repeat steps 2 and 3 until the ice machine is level from front to back and from side to side Levelers Legs SV1705 SV1606 SV...

Page 27: ...guration The 208 230 1 60 and 230 1 50 ice machines are factory pre wired with a power cord only no plug is supplied FUSE CIRCUIT BREAKER A separate fuse circuit breaker must be provided for each ice machine Circuit breakers must be H A C R rated does not apply in Canada TOTAL CIRCUIT AMPACITY The total circuit ampacity is used to help select the wire size of the electrical supply The wire size or...

Page 28: ...15 1 60 15 amp 7 6 208 230 1 60 15 amp 3 3 230 1 50 15 amp 3 3 Q130 After Serial Number 310047287 115 1 60 15 amp 7 0 208 1 60 15 amp 3 1 230 1 50 15 amp 3 0 Q170 115 1 60 15 amp 7 0 Q210 115 1 60 15 amp 6 5 208 230 1 60 15 amp 3 6 230 1 50 15 amp 3 6 Q270 Danfoss 115 1 60 15 amp 10 7 208 230 1 60 15 amp 5 2 230 1 50 15 amp 5 2 Q270 Tecumseh 115 1 60 15 amp 8 5 208 230 1 60 15 amp 4 5 230 1 50 15 ...

Page 29: ...umber 310047287 115 1 60 15 amp 6 3 208 1 60 15 amp 2 6 230 1 50 15 amp 2 5 Q210 115 1 60 15 amp 6 1 208 230 1 60 15 amp 3 1 230 1 50 15 amp 3 1 Q270 Danfoss 115 1 60 15 amp 9 9 208 230 1 60 15 amp 4 7 230 1 50 15 amp 4 7 Q270 Tecumseh 115 1 60 15 amp 7 7 208 230 1 60 15 amp 4 0 230 1 50 15 amp 4 0 Warning All wiring must conform to local state and national codes Warning The ice machine must be gr...

Page 30: ...e Ice Machine Voltage Phase Cycle Max Fuse Circuit Breaker Total Amps QM20 115 1 60 15 amp 3 5 230 1 50 15 amp 1 5 QM30 115 1 60 15 amp 5 3 230 1 50 15 amp 2 6 QM45 115 1 60 15 amp 5 2 230 1 50 15 amp 2 6 Ice Machine Voltage Phase Cycle Max Fuse Circuit Breaker Total Amps SM50 115 1 60 15 amp 4 1 ...

Page 31: ...itowoc distributor Install a water shut off valve for ice making potable water Insulate water inlet lines to prevent condensation DRAIN CONNECTIONS Follow these guidelines when installing drain lines to prevent drain water from flowing back into the ice machine and storage bin Drain lines must have a 1 5 inch drop per 5 feet of run 2 5 cm per meter and must not create traps The floor drain must be...

Page 32: ...unt of heat rejected and the pressure drop through the condenser and water valves inlet to outlet when using a cooling tower on an ice machine Water entering the condenser must not exceed 90 F 32 2 C Water flow through the condenser must not exceed 5 gallons 19 liters per minute Allow for a pressure drop of 7 psig 48 bar between the condenser water inlet and the outlet of the ice machine Water exi...

Page 33: ...inside diameter 1 2 12 7 mm min inside diameter Ice Machine Fitting 3 8 Female Pipe Thread 3 8 Female Pipe Thread 3 8 Female Pipe Thread 1 2 Female Pipe Thread Water Pressure 20 psi 1 38 bar min 80 psi 5 5 bar max 20 psi 1 38 bar min 150 psi 10 3 bar max Water Temperature 33 F 0 6 C min 90 F 32 2 C max 33 F 0 6 C min 90 F 32 2 C max Location Ice Making Water Inlet Condenser Water Inlet Condenser W...

Page 34: ...95 cm min inside diameter 5 8 1 59 cm min inside diameter Ice Machine Fitting 3 4 Male Connection 5 8 1 59 cm inside diameter flexible hose Water Pressure 34 8 psi 2 4 bar min 89 9 psi 6 2 bar max Water Temperature 50 F 10 C min 86 F 30 C max Location Ice Making Water Inlet Bin Drain ...

Page 35: ...e diameter Note If air temperature is less than 60 F 15 5 C water temperature must be equal or greater than 50 F 10 C Ice Machine Fitting 1 4 64 cm ID Copper Tubing 3 4 1 9 cm Hose Barb 3 8 96 cm Hose Water Pressure 20 psi 1 38 bar min 80 psi 5 5 bar max Water Temperature 50 F 10 C min 90 F 32 2 C max Location Ice Making Water Inlet Bin Drain Drain Pump ...

Page 36: ...36 Part Number 80 01111 9 7 10 This Page Intentionally Left Blank ...

Page 37: ...ent Identification QM45 Q130 Q170 Q210 Q270 Evaporator Compartment ICE THICKNESS PROBE DISTRIBUTION TUBE Q210 Q270 SHOWN EVAPORATOR Q210 Q270 SHOWN WATER TROUGH ICE DAMPER WATER PUMP SV1694A FLOAT VALVE BIN SWITCH MAGNET SIPHON CAP SV1695A ...

Page 38: ...QM45 Q130 Q170 Q210 Ice Machines Q270 Ice Machines ON OFF WASH TOGGLE SWITCH CONDENSER AIR FILTER COMPRESSOR COMPARTMENT ACCESS SCREWS SV1686G CONDENSER AIR FILTER ON OFF WASH TOGGLE SWITCH COMPRESSOR COMPARTMENT ACCESS SCREWS PT1288 ...

Page 39: ...Part Number 80 01111 9 7 10 39 QM20 QM30 WATER DISTRIBUTION TUBE WATER PUMP OUTLET HOSE WATER PUMP AND BRACKET ASSEMBLY EVAPORATOR ASSEMBLY WATER TROUGH OVERFLOW TUBE SV1716A ...

Page 40: ...40 Part Number 80 01111 9 7 10 QM20 Ice Machines QM30 Ice Machines SV1711 ON OFF WASH TOGGLE SWITCH SV1681A ON OFF WASH TOGGLE SWITCH CONDENSER AIR FILTER ...

Page 41: ...Number 80 01111 9 7 10 41 SM50 CONTROL PANEL EVAPORATOR COMPARTMENT WATER FILTER GRILL BIN LIGHT WATER SHUTTERS BIN THERMOSTAT BIN WATER PUMP ELECTRICAL DRAIN PUMP DRAIN WATER INLET REFRIGERATION COMPRESSOR ...

Page 42: ...42 Part Number 80 01111 9 7 10 WATER PUMP EVAPORATOR WATER SHUTTER ASSEMBLY NOTE EVAPORATOR REMOVED FOR CLARITY EVAPORATOR BUCKET CONTROL BOARD WATER SHUTTERS SPRAY NOZZLES SPRAY BAR WATER SUPPLY LINE ...

Page 43: ...rior Cleaning Clean the area around the ice machine as often as necessary to maintain cleanliness and efficient operation Sponge any dust and dirt off the outside of the ice machine with mild soap and water Wipe dry with a clean soft cloth A commercial grade stainless steel cleaner polish can be used as necessary Cleaning the Condenser Warning Disconnect electric powe r to the ice machine a t the ...

Page 44: ...ow compressed air through the condenser fins from the inside Be careful not to bend the fan blades B Use a commercial condenser coil cleaner Follow the directions and cautions supplied with the cleaner 4 Straighten any bent condenser fins with a fin comb 5 Carefully wipe off the fan blades and motor with a soft cloth Do not bend the fan blades If the fan blades are excessively dirty wash with warm...

Page 45: ... lime scale and mineral deposits Ice machine sanitizer disinfects and removes algae and slime Caution Use only Ma nitowoc app roved Ice Machine Cleaner p art number 94 0 546 3 and Sanitizer p art n umber 94 0565 3 It is a violation of F ederal law to u se th ese solutions in a manner inconsistent with their labeling Read and unde rstand all lab els printed on bottles before use Caution Do no t mix...

Page 46: ...dd the proper amount of Manitowoc Ice Machine Cleaner to the water trough Step 5 Wait until the clean cycle is complete approximately 22 minutes then place the toggle switch in the OFF position disconnect power and water supplies to the ice machine Caution Never use a nything to force ice fro m the evaporator Damage may result Model Amount of Cleaner QM45 1 5 ounce 45 ml Q130 1 ounce 30 ml Q170 2 ...

Page 47: ...he Water Pump and Water Distribution Tube C Remove Water Pump Disconnect the water pump power cord Loosen the screws securing the pump mounting bracket to the bulkhead Lift the pump and bracket assembly off the mounting screws Water Pump Removal DO NOT SOAK WATER PUMP MOTOR IN CLEANER OR SANITIZER SOLUTIONS WHEN USED REMOVE THUMBSCREWS AND WATER PUMP COVER ...

Page 48: ...en the back wall and the grommet and prying forward Pull the bulkhead grommet and wire forward until the connector is accessible then disconnect the wire lead from the connector Ice Thickness Probe Cleaning Mix a solution of Manitowoc ice machine cleaner and water 2 ounces of cleaner to 16 ounces of water in a container Soak the ice thickness probe a minimum of 10 minutes Clean all ice thickness p...

Page 49: ...rews which secure the distribution tube Lift the right side of the distribution tube up off the locating pin then slide it back and to the right Caution Do not force this removal Be sure the locating pin is clear of the hole before sliding the distribution tube out SV1630 DISTRIBUTION TUBE THUMB SCREW 1 LIFT UP 2 SLIDE BACK 3 SLIDE TO RIGHT THUMB SCREW 1 3 2 ...

Page 50: ... 01111 9 7 10 Disassembly Twist both of the inner tube ends until the tabs line up with the keyways Pull the inner tube ends outward Q210 Q270 Water Distribution Tube Disassembly SV1211 INNER TUBE TAB KEYWAY INNER TUBE ...

Page 51: ...ecure the distribution tube Lift the distribution tube up off the thumbscrews Disassembly Twist the barbed end until the tab lines up with the keyway Pull the inner tube end outward Q130 Water Distribution Tube Disassembly SV1731C THUMBSCREW REMOVE ICE THICKNESS PROBE THUMBSCREW DISTRIBUTION TUBE SV1741 KEYWAY TAB ...

Page 52: ...ns FLOAT VALVE REMOVAL Pull the float valve forward and off the mounting bracket Disconnect the water inlet tube from the float valve at the compression fitting Remove the cap and filter screen for cleaning SV1695 2 FLOAT VALVE BRACKET COMPRESSION FITTING CAP AND FILTER SCREEN SPLASH SHIELD SHUT OFF VALVE FLOAT ...

Page 53: ...iphon tube and remove from the bottom of the water trough Remove the upper thumbscrew While supporting the water trough remove the two thumbscrews from beneath the water trough Remove the water trough from the bin area SV1689 1 UPPER THUMBSCREW SV1689 2 LOWER THUMBSCREWS REMOVE SIPHON TUBE ...

Page 54: ...acket Pull forward on the ice damper until the left hand mounting pin disengages Installation Grasp the right side of ice damper and place left hand pin in the mounting bracket While applying pressure against the left hand mounting bracket push the damper until the right hand mounting pin engages Q170 Q210 Q270 SV1731F STEP 1 STEP 2 SV1731G STEP 2 STEP 1 ...

Page 55: ...ce damper forward when the right hand ice damper pin disengages Installation Place ice damper pin in left hand mounting bracket and apply pressure toward the left hand mounting bracket Apply pressure to the right hand mounting bracket with thumb Push ice damper toward evaporator until right hand damper pin engages SV1742A STEP 2 STEP 1 STEP 3 SV1742H STEP 2 STEP 1 STEP 3 ...

Page 56: ...against the bin door pull down on the rear of each bin door track until the door pins clear the stop tabs Slide the rear door pins off the end and then below the door track Slide bin door forward allowing the back of the door to lower into the bin Continue forward with the bin door until the front pins bottom out in the track Lift right side of door until the front pins clear the track then remove...

Page 57: ...lean water Step 9 While components are soaking use of the cleaner water solution to clean all foodzone surfaces of the ice machine and bin Use a nylon brush or cloth to thoroughly clean the following ice machine areas Evaporator plastic parts including top bottom and sides Bin bottom sides and top Rinse all areas thoroughly with clean water Step 10 Mix a solution of sanitizer and warm water Step 1...

Page 58: ...the WASH position Add the proper amount of Manitowoc Ice Machine Sanitizer to the water trough Step 15 Wait until the sanitize cycle is complete approximately 22 minutes then place the toggle switch in the OFF position disconnect power and water supplies to the ice machine Step 16 Repeat step 6 to remove parts for hand sanitizing Step 17 Mix a solution of sanitizer and warm water Model Amount of S...

Page 59: ...sanitizing Step 19 Use 1 2 of the sanitizer water solution to sanitize all foodzone surfaces of the ice machine and bin Use a cloth or sponge to liberally apply the solution When sanitizing pay particular attention to the following areas Evaporator plastic parts including top bottom and sides Bin bottom sides and top Do not rinse the sanitized areas Step 20 Replace all removed components Step 21 R...

Page 60: ...Sanitizer p art n umber 94 0565 3 It is a violation of F ederal law to use th ese solutions in a manner inconsistent with their labeling Read and unde rstand all lab els printed on bottles before use Caution Do n ot mix Ice Machi ne Cleaner an d Sanitizer solutions together It is a violation of Federal law to use th ese solu tions in a manner inconsistent with their labeling Warning Wear rubb er g...

Page 61: ... Step 4 Wait until water flows over the evaporator about three minutes then add the proper amount of Manitowoc Ice Machine Cleaner to the water trough Step 5 Wait until the clean cycle is complete approximately 45 minutes then place the toggle switch in the OFF position disconnect power and water supplies to the ice machine Caution Never use anything to force ice from th e evaporator Damage may re...

Page 62: ... back and forth motion to loosen it from the drain hole When installing the tube be sure it is completely inserted into the drain hole to prevent water leakage during normal operation Removing the Overflow Tube B Remove the Vinyl Hose Disconnect the water pump discharge hose from the distribution tube and water pump DRAIN HOLE OVERFLOW TUBE ...

Page 63: ...ower cord Loosen the screws that hold the water pump in place Lift the water pump and bracket assembly up and off the screws Removing the Water Pump D Remove the Water Trough Remove the screws holding the water trough to the walls of the cabinet WATER PUMP SCREWS SV3019 REMOVE SCREWS ...

Page 64: ...an water Step 9 While components are soaking use half of the cleaner water solution to clean all foodzone surfaces of the ice machine and bin Use a nylon brush or cloth to thoroughly clean the following ice machine areas Evaporator plastic parts including top bottom and sides Bin bottom sides and top Rinse all areas thoroughly with clean water Step 10 Mix a solution of sanitizer and warm water Ste...

Page 65: ...e water trough Step 16 Wait until the sanitize cycle is complete approximately 45 minutes then place the toggle switch in the OFF position disconnect power and water supplies to the ice machine Step 17 Repeat step 6 to remove parts for hand sanitizing Step 18 Mix a solution of sanitizer and warm water Step 19 Use half of the sanitizer water solution to sanitize all removed components Use a cloth o...

Page 66: ...r sponge to liberally apply the solution When sanitizing pay particular attention to the following areas Evaporator plastic parts including top bottom and sides Bin bottom sides and top Do not rinse the sanitized areas Step 21 Replace all removed components Step 22 Reapply power and water to the ice machine and place the toggle switch in the ICE position ...

Page 67: ...any ice from the evaporator Or set the switch to the OFF position and allow the ice to melt off the evaporator 2 Remove all ice from the bin 3 The clean light will energize to indicate the clean cycle has started Caution Use onl y Manitowoc app roved Ice Ma chine Cleaner part number 94 0546 3 original green ice machine cl eaner or 000000084 cl ear metal safe ice machine cleaner and Sanitizer part ...

Page 68: ... a soft nylon brush or cloth Disassemble spray bar remove nozzles and inserts and soak for 5 minutes For heavily scaled parts soak in solution for 15 20 minutes Rinse all components with clean water 8 While components are soaking use nylon brush or cloth to clean inside of ice bin Clean inside of door door gasket bin top of evaporator and evaporator bucket Rinse all areas thoroughly with clean wat...

Page 69: ...cle is completed This entire cycle lasts approximately 30 minutes NOTE The ice machine will automatically continue from the previous point before the clean cycle was initiated If the ice machine was in the ice making cycle the control board will initiate a 2 minute harvest cycle perform the clean cycle and start ice making again automatically If the ice machine was in the off cycle the control boa...

Page 70: ...f the water shutters install one end pivot the opposite end and pull down into position Make sure tabs are secure in grooves To remove water shutter assembly 1 Slide evaporator bucket forward 1 2 13 mm 2 Lift shutter assembly straight up Warning Removing the water shu tters whil e the water pump is running will allow water to spray from ice machine D isconnect the e lectrical p ower to the ice mac...

Page 71: ...ay bar with the front edge inside the water trough Spray nozzles must align with the spray holes or spray water will fall into the bin 1 Grab protruding spray hole on one end and lift up and remove 2 To re install ice chute grasp protruding spray hole and position over Water Distribution Assembly Make sure rear supports are over spray bar and front edge is inside of water trough ...

Page 72: ...10 SUMP DRAIN OVERFLOW TUBE 1 Remove clamp 2 Pull down to remove overflow tube and tubing as an assembly The sump trough water will drain into the bin 3 Remove overflow tube from vinyl tubing by pulling REMOVE CLAMP AND PULL DOWN ...

Page 73: ...Part Number 80 01111 9 7 10 73 WATER TROUGH 1 Depress tabs on right and left side of the water trough 2 Allow front of water trough to drop as you pull forward to disengage the rear pins ...

Page 74: ... water pump from ice machine 4 Remove clamp from hose to remove from pump 5 Do not submerse the water pumpmotor in cleaner or sanitizer If soaking is required immerse pump to normal water level during the freeze Warning Disconnect the e lectric power to the ice machine at the electric service switch b ox and turn off the water supply before proceeding DO NOT IMMERSE MOTOR IN SOLUTION REMOVE CLAMP ...

Page 75: ...cket 2 Remove clamp on water inlet tubing by grasping both ears on clip and separating 3 Apply food grade lubricant to ease re assembly of spray bar components when necessary 4 To re install spray bar position water inlet tubing on inlet ports and squeeze clips until tight 5 Reposition assembly on water trough seat Nozzles and inserts can be removed for cleaning by unscrewing nozzles Inserts are l...

Page 76: ...mponents 9 Install the removed parts 10 Turn on the water and electrical supply Warning Wear ru bber gloves an d sa fety g oggles and or face shield when handling Ice Machine Cleaner or Sanitizer Solution Type Water Mixed With Cleaner 1 gal 4 l 16 oz 500 ml cleaner Sanitizer 6 gal 23 l 4 oz 120 ml sanitizer Warning Do not mi x Cleaner and Sanitizer solu tions together It is a viola tion of Fe dera...

Page 77: ...h 2 Turn off the water supply 3 Remove the water from the water trough 4 Disconnect and drain the incoming ice making water line at the rear of the ice machine 5 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 inlet water lines or the drain 6 Make sure water is not trapped in any of the water lines drain line...

Page 78: ... 2 Disconnect the incoming water and drain lines from the water cooled condenser 3 Insert a large screwdriver between the bottom spring coils of the water regulating valve Pry upward to open the valve Pry Open the Water Regulating Valve 4 Hold the valve open and blow compressed air through the condenser until no water remains SV1624 ...

Page 79: ...oughout the entire Freeze and Harvest Sequences The fan motor iswired through a fan cycle pressure control therefore it may cycle on and off The compressor and condenser fan motor are wired through the relay As a result any time the relay coil is energized the compressor and fan motor are supplied with power FREEZE SEQUENCE 3 Prechill The compressor is on for 30 seconds prior to water flow to prec...

Page 80: ...g and re closing of the bin switch terminates the Harvest Sequence and returns the ice machine to the Freeze Sequence steps 3 4 AUTOMATIC SHUT OFF 6 Automatic Shut off When the storage bin is full at the end of a harvest sequence the sheet of cubes fails to clear the ice damper and will hold it down After the ice damper is held open for 7 seconds the ice machine shuts off The ice machine remains o...

Page 81: ...n and off Length of Time 15 seconds 5 seconds 30 seconds Until 7 sec Water contact w ice thickness probe Relay 3B Compressor Fan Motor off on on on 3A Compressor off on on on Control Board Relays 3 Relay Coil off on on on 2 Hot Gas Valve on on off off 1 Water Pump off off off on ICE MAKING SEQUENCE OF OPERATION Initial Start up 1 Water purge 2 Refrigeration System Start up Freeze Sequence 3 Pre ch...

Page 82: ...on Until bin switch re closes Relay 3B Condenser Fan Motor on off 3A Compressor on off Control Board Relays 3 Relay Coil on off 2 Hot Gas Valve on off 1 Water Pump off off ICE MAKING SEQUENCE OF OPERATION Harvest Sequence 5 Harvest Automatic Shut off 6 Auto Shut off ...

Page 83: ... after the water fill valve and hot gas valve are energized The water fill valve and hot gas valve remain energized for 5 seconds during compressor start up and then shut off The compressor remains on throughout the entire freeze and harvest cycles FREEZE SEQUENCE 3 Freeze Cycle The condenser fan motor and water pump are energized and remain on throughout the entire freeze cycle An even flow of wa...

Page 84: ...he length of the harvest cycle based on the temperature of the refrigeration system liquid line at the end of the freeze cycle At the end of the harvest cycle the ice machine returns to another freeze cycle step 3 AUTOMATIC SHUT OFF 5 Automatic Shut off The level of ice in the ice storage bin controls the ice machine shut off When the bin is full ice cubes contact the bin thermostat bulb holder wh...

Page 85: ...ly determined Automatically determined Until bin thermostat re closes Control Board Relays 3 Water Pump Fan Motor off off on off off 2 Hot Gas Valve Water Fill Valve on on off on off 1 Compressor off on on on off ICE MAKING SEQUENCE OF OPERATION Initial Start up 1 Water purge 2 Refrigeration System Start up 3 Freeze Cycle 4 Harvest Cycle 5 Auto shut off ...

Page 86: ...The compressor starts after the water fill and remains on throughout the Freeze and Harvest cycles The hot gas valve remains on for 5 seconds during initial compressor start up and then shuts off At the same time the compressor starts the condenser fan motor air cooled models is supplied with power The condenser fan motor will remain energized during the entire freeze cycle 3 Freeze The water pump...

Page 87: ...the condenser fan motor is energized or de energized during the harvest cycle At the end of the harvest cycle the ice machine will start another freeze cycle step 3 5 Automatic Shut off The level of ice in the ice storage bin controls the ice machine shut off When the bin is full ice cubes contact the bin thermostat bulb holder which cools down and opens to stop the ice machine The ice machine rem...

Page 88: ...g the harvest cycle Duration 175 seconds 5 seconds Automatically determined Automatically determined Until bin thermostat Re closes Fan Motor 5 off on on on or off off Compressor 4 off on on on off Harvest Valve 3 on on off on off Water Inlet Valve 2 on on off on off Water Pump 1 on on on off off SEQUENCE Relay Initial Start up Start up after Automatic Shutoff Refrigeration System Start up Freeze ...

Page 89: ...when the water level in the sump trough drops When the siphon action stops the float valve refills the water trough to the correct level Follow steps 1 through 6 under water level check to verify the siphon system functions correctly Water Level Check the water level while the ice machine is in the ice mode and the water pump is running The correct water level is 1 4 6 3 mm to 3 8 9 5 mm below the...

Page 90: ...et B Raise or lower the float valve assembly as necessary then tighten the screws 5 Move the main ON OFF WASH toggle switch to the OFF position The water level in the trough will rise above the standpipe and run down the drain 6 Replace the siphon cap on the standpipe and verify water level and siphon action by repeating steps 3 through 5 Ice Thickness Check After a harvest cycle inspect the ice c...

Page 91: ...art Number 80 01111 9 7 10 91 Ice Thickness Adjustment 2 Make sure the ice thickness probe wire and bracket does not restrict movement of the probe 1 8 ICE BRIDGE THICKNESS ADJUSTING SCREW SV3114 SV3113 ...

Page 92: ...al are not covered by the warranty Water Inlet Valve The water inlet valve energizes in the harvest cycle The water level will rise and flow out the overflow tube and down the drain Verify the overflow tube is in place in the water trough The water level is not adjustable ATTACHMENT POINT OVERFLOW TUBE SV3019 ...

Page 93: ...sted below Correct Ice Bridge Thickness 1 Ensure the air filter front and back panels are installed properly and close the bin door 2 During the third harvest cycle open the bin door and catch the entire slab of ice 3 Weigh the ice slab The combined weight of all cubes from one harvest should weigh between 7 9 oz 200 270 g If the slab weight is within this range the ice machine is working properly...

Page 94: ...er cube or counterclockwise for a thinner cube Ice Thickness Adjustment Dial 7 Ensure all of the panels and air filter are reinstalled properly and the bin door is closed Repeat steps 1 3 After completing the procedure above if you are unable to obtain a sheet of ice weighing 7 9 oz 200 270 g contact the Manitowoc Service Department for further assistance DIAL IS FACTORY SET TO ZERO ICE THICKNESS ...

Page 95: ...ssing the Power button once will energize the ice machine and green Power light Pressing the Power button a second time will de energize the ice machine Automatic Ice Making Light Blue This light is energized when the ice machine is the ice making position The light is off when the ice machine is in the clean cycle Delay Start Pressing the Delay Start button will initiate a delay cycle The ice mac...

Page 96: ...s replacement Depressing the Clean button for 6 seconds will reset the counter and de energize the light Safety Timers The control board has the following non adjustable safety timers Initial cycle is 5 minutes longer than subsequent cycles The ice machine is locked into the freeze cycle for 10 minutes 15 minutes initial cycle before a harvest cycle can be initiated The maximum freeze time is 120 ...

Page 97: ... machine to run several freeze harvest cycles then inspect the ice cubes If a heavier cube weight is desired add another minute of freeze time and repeat the process 1 Press and hold the Power button 2 Press and release the Clean button once for each additional minute of freeze cycle time desired 3 Five minutes is the maximum additional freeze time that can be added Pressing the clean button 6 tim...

Page 98: ...98 Part Number 80 01111 9 7 10 This Page Intentionally Left Blank ...

Page 99: ... of ice 5 Verify ON OFF WASH toggle switch functions properly A defective toggle switch may keep the ice machine in the OFF mode 6 Verify low DC voltage is properly grounded Loose DC wire connections may intermittently stop the ice machine 7 Replace the control board 8 Be sure Steps 1 5 were followed thoroughly Intermittent problems are not usually related to the control board Warning High line vo...

Page 100: ...om probe to ground Monitoring Harvest Light Correction The harvest light comes on and 6 10 seconds later ice machine cycles from freeze to harvest The ice thickness control circuitry is functioning properly Do not change any parts The harvest light comes on but the ice machine stays in the freeze sequence The ice control circuitry is functioning properly The ice machine is in a six minute freeze t...

Page 101: ... and 6 10 seconds later ice machine cycles from freeze to harvest The ice thickness probe is causing the malfunction The harvest light comes on but the ice machine stays in the freeze sequence The control circuitry is functioning properly The ice machine is in a six minute freeze time lock in verify step 1 of this procedure was followed correctly The harvest light does not come on The control boar...

Page 102: ...e from the control board terminal Step 2 Disconnect probe from control board terminal Monitoring Harvest Light Correction The harvest light stays off and the ice machine remains in the freeze sequence The ice thickness probe is causing the malfunction Verify that the Ice Thickness probe is adjusted correctly The harvest light comes on and 6 10 seconds later the ice machine cycles from freeze to ha...

Page 103: ...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 production check using the formula below Weighing the ice is the only 100 accurate check However if the ice pattern is normal and the 1 8 44 cm thickness is maintained the ice slab weights listed with the 24 Hour Ice Production Charts may be used 4 Compare the results of step 3 with step 2 Ice p...

Page 104: ...ECKLIST Ice 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 ...

Page 105: ...e or increase the water pressure Incoming water temperature is not between 35 F 1 7 C and 90 F 32 2 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 Vent tube is not installed on water outlet drain See Installation Instructions Hoses fittings etc are leaking water Repair replace as needed Water float valve is...

Page 106: ...e overflow pipe a faulty water float valve a low refrigerant charge etc Examples of Evaporator Tubing Routing Normal Ice Formation Ice forms across the entire evaporator surface At the beginning of the Freeze cycle it may appear that more ice is forming on the inlet of the evaporator than at the outlet At the end of the Freeze cycle ice formation at the outlet will be close to or just a bit thinne...

Page 107: ...derable lack of ice formation at the inlet of the evaporator Examples The ice at the outlet of the evaporator reaches the correct thickness but there is no ice formation at all at the inlet of the evaporator Possible cause Insufficient water flow flooding TXV etc Spotty Ice Formation There are small sections on the evaporator where there is no ice formation This could be a single corner or a singl...

Page 108: ...ng procedure 1 Move the ON OFF WASH switch to OFF and then back to ON 2 If the safety limit feature has stopped the ice machine it will restart after a short delay Proceed to step 4 3 If the ice machine does not restart see Ice machine does not operate 4 Allow the ice machine to run to determine if the condition is reoccurring A If the ice machine stops again the condition has reoccurred Call for ...

Page 109: ... During the Stand by Mode the harvest light will be flashing continuously and a safety limit indication can be viewed If the samesafety limit is reached a second time the problem has reoccurred the ice machine will initiate a safety limit shut down and remain off until it is manually restarted During a safety limit shut down the harvest light will be flashing continuously Determining Which Safety ...

Page 110: ...y limit indication A continuous run of 100 harvests automatically erases the safety limit code The control board will store and indicate only one safety limit the last one exceeded If the toggle switch is moved to the OFF position and then back to the ON position prior to reaching the 100 harvest point the last safety limit exceeded will be indicated If the harvest light did not flash prior to the...

Page 111: ...are designed to stop the ice machine prior to major component failures most often a minor problem or something external to the ice machine This may be difficult to diagnose as many external problems occur intermittently Example An ice machine stops intermittently on safety limit 1 long freeze times The problem could be a low ambient temperature at night a water pressure drop the water is turned of...

Page 112: ... set too high water escaping through over flow tube Low water pressure 20 psig min High water pressure 80 psig max High water temperature 90 F 32 2 C max Clogged water distribution tube Dirty defective float valve Defective water pump Electrical System Ice thickness probe out of adjustment Harvest cycle not initiated electrically Contactor not energizing Compressor electrically non operational Res...

Page 113: ...stem Non Manitowoc components Improper refrigerant charge Defective compressor TXV starving or flooding check bulb mounting Non condensable in refrigeration system Plugged or restricted high side refrigerant lines or component Defective hot gas valve ...

Page 114: ...tlet drain Water freezing behind evaporator Plastic extrusions and gaskets not securely mounted to the evaporator Low water pressure 20 psig min Loss of water from sump area Clogged water distribution tube Dirty defective float valve Defective water pump Electrical system Ice thickness probe out of adjustment Ice thickness probe dirty Bin switch defective Premature harvest Refrigeration system Non...

Page 115: ...normal 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...

Page 116: ...ensable in system Wrong type of refrigerant Other Non Manitowoc components in system High side refrigerant lines component Restricted before mid condenser Freeze Cycle Discharge Pressure Low Checklist Improper Installation Refer to Installation and Visual Inspection Checklist on page 104 Improper Refrigerant Charge Undercharged Wrong type of refrigerant Other Non Manitowoc components in system Hig...

Page 117: ...the air and water temperature entering the ice machine changes These variables also determine the freeze cycle times To analyze and identify the proper suction pressure drop throughout the freeze cycle compare the published suction pressure 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 ...

Page 118: ...reeze Cycle Suction Pressure psig In the example the proper suction pressure should be approximately 39 psig at 7 minutes 30 psig at 12 minutes etc 3 Perform an actual suction pressure check at the beginning middle and end of the freeze cycle Note the times at which the readings are taken Example Manifold gauges were connected to the example ice machine and suction pressure readings taken as follo...

Page 119: ...04 Discharge Pressure Discharge pressure is too high and is affecting suction pressure refer to Discharge Pressure High Checklist on page 150 Improper Refrigerant Charge Overcharged Wrong type of refrigerant Non condensables in system Other Non Manitowoc components in system Hot gas valve leaking TXV flooding check bulb mounting Defective compressor ...

Page 120: ... Pressure Low Checklist Improper Refrigerant Charge Undercharged Wrong type of refrigerant Other Non Manitowoc components in system Improper water supply over evaporator refer to Water System Checklist on page 105 Loss of heat transfer from tubing on back side of evaporator Restricted plugged liquid line drier Restricted plugged tubing in suction side of refrigeration system TXV starving NOTE Do n...

Page 121: ... not used during the freeze cycle The hot gas valve is de energized closed preventing refrigerant flow from the receiver into the evaporator 2 Allows refrigerant vapor to enter the evaporator in the harvest cycle During the harvest cycle the hot gas valve is energized open allowing refrigerant gas from the discharge line of the compressor to flow into the evaporator The heat is absorbed by the eva...

Page 122: ...to symptoms of an expansion valve float valve or compressor problem Symptoms are dependent on the amount of leakage in the freeze cycle A small amount of leakage will cause increased freeze times and an ice fill pattern that is Thin at the Outlet but fills in at the end of the cycle As the amount of leakage increases the length of the freeze cycle increases and the amount of ice at the outlet of t...

Page 123: ...re the temperature of the inlet of the hot gas valves to the temperature of the compressor discharge line Important Feeling the hot gas valve outlet or across the hot gas valve itself will not work for this comparison The h ot g as val ve o utlet i s on the suction sid e cool refrigerant It may be cool enough to touch even if the valve is leaking Warning The inlet of the hot gas valve and the comp...

Page 124: ...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 125: ...s into the freeze cycle These temperatures must be within 7 F 4 C 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 copper lines 2 Attach the temperature meter sensing device to the copper lines entering and leaving the evaporator 3 Wait five minutes into the freeze cycle 4 Reco...

Page 126: ...mperature Ambient air temperatures affect the maximum discharge line temperature Higher ambient air temperatures at the condenser higher discharge line temperatures at the compressor Lower ambient air temperatures at the condenser lower discharge line temperatures at the compressor Regardless of ambient temperature the freeze cycle discharge line temperature will be higher than 150 F 66 C on a nor...

Page 127: ...on valve sensing bulb is positioned and secured correctly Discharge Line Temperature Below 150 F 66 C at End of Freeze Cycle Ice machines that have a flooding expansion valve will have a maximum discharge line temperature that decreases each cycle Verify the expansion valve sensing bulb is 100 insulated and sealed airtight Condenser air contacting an incorrectly insulated sensing bulb will cause o...

Page 128: ...s must be used with charts checklists and other references to eliminate refrigeration components not listed and external items and problems that will cause good refrigeration components to appear defective The tables list four 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 liste...

Page 129: ...k all information listed Each item in this column has supporting reference material While analyzing each item separately you may find an external problem causing a good refrigerant component to appear bad Correct problems as they are found If the operational problem is found it is not necessary to complete the remaining procedures Step 2 Add the check marks listed under each of the four columns No...

Page 130: ...arge of refrigerant If the problem is corrected the ice machine is low on charge Find the refrigerant leak The ice machine must operate with the nameplate charge If the leak cannot be found proper refrigerant procedures must still be followed Change the liquid line drier evacuate the system and weigh in the proper charge If the problem is not corrected by adding charge the expansion valve is fault...

Page 131: ...llation and water related problems must be corrected before proceeding with chart Ice formation is normal or No ice formation on entire evaporator 3 Ice formation is normal or ice formation is extremely thin on the bottom of the evaporator or No ice formation on evaporator 2 Ice formation is extremely thin on top of evaporator or No ice formation on entire evaporator 1 Ice formation is extremely t...

Page 132: ... suction pressure problem checklist to eliminate problems and or components not listed on this table before proceeding Suction pressure is High 3 Stops on safety limit 1 or 2 Suction pressure is High 2 Stops on safety limit 1 Suction pressure is Low 1 Stops on safety limit 1 or 2 Suction pressure is High Operational Analysis Safety limits Refer to Analyzing Safety Limits to eliminate all non refri...

Page 133: ... end of freeze cycle TXV Flooding 2 The hot gas valve inlet is COOL and The compressor discharge line is HOT Discharge line temp 150 F 66 C or higher at the end of freeze cycle Low On Charge or TXV Starving 1 The hot gas valve inlet is HOT and The compressor discharge line is HOT Discharge line temp 150 F 66 C or higher at the end of freeze cycle Hot Gas Valve Leaking Operational Analysis Hot Gas ...

Page 134: ...FF mode 5 Verify the bin thermostat functions properly A defective bin thermostat can falsely indicate a full bin of ice 6 Verify low DC voltage is properly grounded Loose DC wire connections may intermittently stop the ice machine 7 Replace the control board 8 Be sure steps 1 6 were followed thoroughly Intermittent problems are not usually related to the control board Warning High line voltage is...

Page 135: ...cle An obstructed capillary tube or low refrigerant charge will have a suction line temperature higher than normal Discharge line temperature at the compressor will range from 168 F 76 C to 140 F 60 C through the freeze cycle An obstructed capillary tube or low refrigerant charge will have a lower discharge line temperature than normal Suction line temperature at the compressor will range from 64 ...

Page 136: ...cted capillary tube or low refrigerant charge will have a suction line temperature higher than normal Discharge line temperature at the compressor will range from 168 F 76 C to 140 F 60 C through the freeze cycle An obstructed capillary tube or low refrigerant charge will have a lower discharge line temperature than normal Suction line temperature at the compressor will range from 64 F 18 C to 111...

Page 137: ... analysis is used along with Manitowoc s Refrigeration System Operational Analysis Table it can help diagnose an ice machine malfunction Any number of problems can cause improper ice formation Example An ice formation that is extremely thin atthe outlet could be caused by a hot water supply water leaking water out the overflow pipe a faulty water float valve a low refrigerant charge etc Evaporator...

Page 138: ...vest cycle open the bin door and catch the entire slab of ice 3 Weigh the ice slab The combined weight of all cubes from one harvest should weigh between 7 9 oz 200 270 g If the slab weight is within this range the ice machine is working properly and no further action is needed If the slab weight is not within this range or you desire a slightly thicker or thinner cube continue to step 4 4 Remove ...

Page 139: ...nd troubleshooting is identical to the Q130 Q210 Q270 Refer to those models for electrical troubleshooting of Ice machine will not run Diagnosing Ice Thickness Control Circuitry Ice production check Ice formation pattern Safety limits Refer to the following pages for refrigeration diagnostics ...

Page 140: ...e left side of the evaporator This occurs because the refrigeration tubing exits the evaporator on the left side Evaporator Tubing Routing Procedure 1 Remove siphon cap from siphon tube and verify that the water level is between 1 4 and 3 8 inch 6 4 9 5 mm from the top of the standpipe a line in the water trough indicates the correct level 2 Verify that the incoming water pressure is more than 20 ...

Page 141: ...Ice Thickness Adjustment 4 Verify that the machine has properly sized drain line leaving the machine and that the bin drain is not restricted Refer to Drain Connections on page 31 for installation details 1 8 ICE BRIDGE THICKNESS ADJUSTING SCREW SV3114 SV3113 SV1735 BIN DRAIN 5 8 I D 1 59 MM ...

Page 142: ...pare Suction and Discharge temperatures to QM45 Operating Temperatures on page 207 The charts list Normal suction and discharge temperatures Analysis Discharge Line Temp Suction Line Temp Ice Fill Pattern Refer to Diagnostics for Normal Normal Less fill on the left side ofthe evaporator This is normal operation Low 20 F 7 C or more Low 20 F 7 C or more Less fill on the left side ofthe evaporator E...

Page 143: ...ll Pattern Thin on top two rows of the evaporator Thin on entire left side of the evaporator Thick on the bottom of the evaporator Freeze time longer than normal Diagnosis can be confirmed by adding 2 oz 56 7 g of refrigerant if the Suction line temperature drops or the ice fill pattern on the top two rows fills in the ice machine is low on refrigerant Refer to charging procedures for access valve...

Page 144: ...d control board light is energized and depressing the Power switch does not energize the green Power light check the interconnecting wire then replace the interface board 6 Verify the bin thermostat functions properly The green Power light will be energized and the ice machine will function in the Clean cycle when the bin thermostat is open 7 Check control board light to see if ice machine shutdow...

Page 145: ...ached to liquid line and insulated Refer to Resistance chart and Ohm thermistor Rapid flash indicates liquid line temperature exceeded 170 F 76 7 C refer to Discharge Pressure High Checklist on page 150 If unable to determine cause refer to Resistance chart and Ohm thermistor 3 Reset ice machine Wait freeze cycle time plus an additional 5 minutes refer to Sequence of Operation on page 86 4 Verify ...

Page 146: ... is poor Replace the filter Water softener is working improperly if applicable Repair the water softener Poor incoming water quality Contact a qualified company to test the quality of the incoming water and make appropriate filter recommendations Water escaping from sump during freeze cycle Check standpipe and drain Check for water tracking out of water circuit ...

Page 147: ...ed 120 F 39 C Water inlet valve filter screen is dirty Remove the water inlet valve and clean the filter screen Water inlet valve stuck open or leaking Turn off ice machine if water continues to enter ice machine verify water pressure is ok then replace water inlet valve Water inlet valve is not working Water inlet valve must be replaced Refrigeration problem Refer to refrigeration diagnostics Wat...

Page 148: ...rrect incoming water pressure Water pressure must be 20 80 psi 1 4 5 5 bar Spray nozzle is blocked with mineral buildup Clean and sanitize the ice machine Ambient temperature is too high or low Ambient temperature must be between 50 F and 110 F 10 C and 43 C Thermistor Disconnected or Open Refer to thermistor diagnostics ...

Page 149: ...ressures 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 beginning o...

Page 150: ...ystem Wrong type of refrigerant Other Non Manitowoc components in system High side refrigerant lines component restricted before mid condenser FREEZE CYCLE DISCHARGE PRESSURE LOW CHECKLIST Improper Installation Refer to Installation and Visual Inspection Checklist on page 104 Improper Refrigerant Charge Undercharged Wrong type of refrigerant Other Non Manitowoc components in system High side refri...

Page 151: ...emperature entering the ice machine changes These variables also determine the freeze cycle times To analyze and identify the proper suction pressure drop throughout the freeze cycle compare the published suction pressure 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 ...

Page 152: ...Cycle Suction Pressure psig In the example the proper suction pressure should be approximately 16 psig at 5 minutes 12 psig at 10 minutes etc 3 Perform an actual suction pressure check at the beginning middle and end of the freeze cycle Note the times at which the readings are taken Example Manifold gauges were connected to the example ice machine and suction pressure readings taken as follows ___...

Page 153: ...arge Overcharged Wrong type of refrigerant Non condensables in system Other Non Manitowoc components in system Hot gas valve leaking Defective compressor Water inlet valve leaking Suction Pressure Low Checklist Improper Installation Refer to Installation and Visual Inspection Checklist on page 104 Discharge Pressure Discharge pressure is too low and is affecting suction pressure refer to Freeze Cy...

Page 154: ...uring the harvest cycle The valve is positioned between the receiver and the evaporator and performs two functions 1 Prevents refrigerant from entering the evaporator during the freeze cycle The hot gas valve is not used during the freeze cycle The hot gas valve is de energized closed preventing refrigerant flow from the receiver into the evaporator 2 Allows refrigerant vapor to enter the evaporat...

Page 155: ...o ice produced Use the following procedure and table to help determine if a hot gas valve is remaining partially open during the freeze cycle 1 Wait five minutes into the freeze cycle 2 Feel the inlet of the hot gas valve s 3 Feel the compressor discharge line 4 Compare the temperature of the inlet of the hot gas valves to the temperature of the compressor discharge line Important Feeling the hot ...

Page 156: ...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 157: ...rmined in Step 1 to find published 24 hr 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 production check using the formula below 4 Compare the results of Step 3 with Step 2 Ice production is normal when these numbers match closely If t...

Page 158: ...cle time ADJUSTING FINISHING TIME Adjust in 1 minute increments and allow the ice machine to run several freeze harvest cycles and then inspect the ice cubes If a heavier cube weight is desired add another minute of freeze time and repeat the process Press and hold the power button Press and release the clean button once for each additional minute of freeze cycle time desired Five minutes is the m...

Page 159: ...mp CHECK PROCEDURE 1 If the bin switch light is on with the ice damper closed the fuse is good 2 Remove the fuse Check the resistance across the fuse with an ohmmeter Warning High line voltage is applied to the control b oard at all times Removing the control board fuse or moving the toggle switch to OFF will not remove the power supplied to the control board Warning Disconnect electrical power to...

Page 160: ...r is held down for 7 seconds the ice machine shuts off The ice machine remains off until enough ice is removed from the storage bin toallow the sheet of cubes to drop clear of the ice damper As the ice damper swings back to the operating position the bin switch closes and the ice machine restarts Check Procedure 1 Set the toggle switch to OFF 2 Watch the bin switch light on the control board 3 Mov...

Page 161: ...d bin switch wires 3 Cycle the bin switch open and closed numerous times by opening and closing the water curtain NOTE To prevent misdiagnosis Always use the water curtain magnet to cycle the switch a larger or smaller magnet will affect switch operation Watch for consistent readings when the bin switch is cycled open and closed bin switch failure could be erratic ...

Page 162: ...nect power to the ice machine at service disconnect 2 Disconnect bin switch wires in control box 3 Depress tab on right side of evaporator with thumb 4 Slide bin switch to right to remove 5 Pull wiring into evaporator compartment Bin Switch Removal SV1731H BIN SWITCH TAB ...

Page 163: ...nect bin switch wires in control box 3 Insert a small screwdriver through the hole located in the top of the bin switch and depress mounting tab slightly 4 While depressing mounting tab roll bin switch to right to release 5 Pull wiring into evaporator compartment Bin Switch Removal SV1695B BIN SWITCH INSERT SCREWDRIVER AND DEPRESS TAB ...

Page 164: ...remains off until enough ice has been removed from the bin This causes the thermostat bulb holder to warm and closes the bin thermostat restarting the ice machine Specifications Check Procedure Control Setting Bin Thermostat Cut in 40 F 4 5 C Cut out 34 F 1 0 C Warning High line voltage is appl ied to the control bo ard terminals 8 an d 2 at all times Re moving the control board fuse or moving the...

Page 165: ... across the bin thermostat terminals NOTE After covering uncovering the bulb holder with ice wait at least three minutes to allow the thermostat to react Open Close No Ice on Bulb Ice on Bulb Result Closed O Open OL Thermostat good Open OL Closed O Replace thermostat DECREASE LEVEL OF ICE IN BIN INCREASE LEVEL OF ICE IN BIN 1 5 3 8 CM 4 10 2 CM SV1680B WARMER COOLER ...

Page 166: ...down and opens the bin thermostat to stop the ice machine The ice machine remains off until enough ice has been removed from the bin This causes the thermostat bulb holder to warm and closes the bin thermostat restarting the ice machine The thermostat is functioning correctly if when three ice cubes are placed on the thermostat tube for 5 minutes the ice machine stops The ice machine should restar...

Page 167: ...g the front grill and remove the grill 2 Remove the lower white plastic panel by pulling straight down 3 Turn the thermostat to the left to decrease the level of ice before automatic shut off Turn to the right to increase the level of ice before automatic shut off 4 Reassemble the plastic panel and grill Warning HAZARDOUS MOVING PARTS Power i s suppl ied to ice machi ne d uring th is procedure Avo...

Page 168: ... After covering uncovering the bulb holder with ice wait at least three minutes to allow the thermostat to react Open Close Warning High line voltage is appl ied to the control bo ard terminals 2 0 and 21 at al l ti mes Remo ving the control bo ard fuse or dep ressing the power button will not remove the power supplied to the control board Warning Disconnect electrical pow er to th e entire ice ma...

Page 169: ... 1 Disconnect the thermistor at the control board Connect the ohmmeter to the isolated thermistor wire leads 2 Using a temperature meter capable of taking readings on curved copper lines attach the temperature meter sensing device to the liquid line next to the thermistor aluminum block 3 With the ice machine running verify that the temperature of the discharge line step 2 corresponds to the therm...

Page 170: ...7 70 80 11 88 9 29 26 7 32 2 80 90 9 29 7 33 32 2 37 8 90 100 7 33 5 82 37 8 43 3 100 110 5 82 4 66 43 3 48 9 110 120 4 66 3 75 48 9 54 4 120 130 3 75 3 05 54 4 60 0 130 140 3 05 2 49 60 0 65 6 140 150 2 49 2 04 65 6 71 1 150 160 2 04 1 68 71 1 76 7 160 170 1 68 1 40 76 7 82 2 170 180 1 40 1 17 82 2 87 8 180 190 1 17 0 98 87 8 93 3 190 200 0 98 0 82 93 3 98 9 200 210 0 82 0 70 100 212 0 73 0 62 bo...

Page 171: ...nce is present A good test is to install a known good substitute capacitor Use a capacitor tester when checking a suspect capacitor Clip the bleed resistor off the capacitor terminals before testing RELAY The relay has a set of contacts that connect and disconnect the start capacitor from the compressor start winding The contacts on the relay are normally open The relay senses the voltage generate...

Page 172: ...of a wide variation in D C voltage it is not recommended that a voltmeter be used to check toggle switch operation 1 Inspect the toggle switch for correct wiring 2 Isolate the toggle switch by disconnecting all wires from the switch or by disconnecting the Molex connector from the control board 3 Check across the toggle switch terminals using a calibrated ohmmeter Note where the wire numbers are c...

Page 173: ... toggle switch if ohm readings do not match all three switch settings Switch Setting Terminals Ohm Reading ON 24 21 Open 24 20 Closed 20 21 Open WASH 24 20 Open 24 21 Closed 20 21 Open OFF 24 20 Open 24 21 Open 20 21 Open Switch Setting Terminals Ohm Reading ON 7 4 Open 7 12 Closed 12 4 Open WASH 7 12 Open 7 4 Closed 12 4 Open OFF 7 12 Open 7 4 Open 12 4 Open ...

Page 174: ...ling in and out of harvest The control board locks the ice machine in the freeze cycle for six minutes If water contacts the ice thickness probe during these six minutes the harvest light will come on to indicate that water is in contact with the probe but the ice machine will stay in the freeze cycle After the six minutes are up a harvest cycle is initiated This is important to remember when perf...

Page 175: ... bridge connecting the cubes It should be about 1 8 3 2 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 NOTE Turning the adjustment 1 3 of a turn will change the ice thickness about 1 16 1 5 mm Ice Thickness Check Make sure the ice thickness probe wire and the bracket do not ...

Page 176: ...e the wires 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 CHECK MOTOR WINDINGS TO GROUND Check c...

Page 177: ...pressures do not move the compressor is seized Replace the compressor If the pressures move the compressor is turning slowly and is not seized Check the capacitors and relay COMPRESSOR DRAWING HIGH AMPS The continuous amperage draw on start up should not be near the maximum fuse size indicated on the serial tag The wiring must be correctly sized to minimize voltage drop at compressor start up The ...

Page 178: ...are not open or grounded and fan spins freely Connect manifold gauges to ice machine Hook voltmeter in parallel across the fan cycle control leaving wires attached Reconnect electrical power to the ice machine and set the ON OFF WASH toggle switch to ON Wait until water flows over the evaporator then refer to chart below Model Cut In Close Cut Out Open QM45 145 psig 5 110 psig 5 Q130 250 psig 5 20...

Page 179: ...ross the HPCO leaving wires attached 4 On water cooled models close the water service valve to the water condenser inlet On self contained air cooled models disconnect the fan motor 5 Set ON OFF WASH switch to ON 6 No water or air flowing through the condenser will cause the HPCO control to open because of excessive pressure Watch the pressure gauge and record the cut out pressure Replace the HPCO...

Page 180: ...owoc drier has dirt retaining filtration with fiberglass filters on both 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 a very high moisture removal capability and a good acid removal capacity Important The liquid line drier is covered as a warranty part The liquid line drier...

Page 181: ...Reclaim To reprocess refrigerant to new product specifications see below by means which may include distillation A chemical analysis of the refrigerant is required after processing to be sure that product specifications are met This term usually implies the use of processes and procedures available only at a reprocessing or manufacturing facility Chemical analysis is the key requirement in this de...

Page 182: ...nt Must be of original nameplate type Must meet ARI Standard 700 latest edition specifications 3 Recovered or Recycled Refrigerant Must be recovered or recycled in accordance with current local state and federal laws Must be recovered from and re used in the same Manitowoc product Re use of recovered or recycled refrigerant from other products is not approved Recycling equipment must be certified ...

Page 183: ...evacuated and recharged properly following failure s Whether the system has been contaminated by this failure Compressor motor burnouts and improper past service prevent refrigerant re use Refer to System Contamination Cleanup on page 190 to test for contamination 5 Substitute or Alternative Refrigerant Must use only Manitowoc approved alternative refrigerants Must follow Manitowoc published conve...

Page 184: ...ough the suction service valve 2 Discharge side of the compressor through the discharge service valve Important Manitowoc Ice assumes no responsibility for the use of contaminated refrige rant Damag e resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company Important Replace the liq uid line drie r before e vacuating and recharging Use only a Man itowo...

Page 185: ...ing a halide or electronic leak detector after charging the ice machine Follow the Charging Procedures below CHARGING PROCEDURES 1 Be sure the toggle switch is in the OFF position 2 Close the vacuum pump valve the low side service valve and the low side manifold gauge valve 3 Open the high side manifold gauge valve and backseat the high side service valve 4 Open the charging cylinder and add the p...

Page 186: ...ose the high side service valve at the ice machine C Open the low side service valve at the ice machine when supplied or disconnect the low loss fitting from the access valve D 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 system E Allow the pressures to equalize while the ice machine is in the freeze cycle F Close ...

Page 187: ...e high and low side process tubes Important Manitowoc Ice assumes no responsibility for the use of contaminated refrige rant Damag e resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company Important Replace the liq uid line drie r before e vacuating and recharging Use only a Manitowoc O E M liquid lin e filter drier to preven t voidi ng th e warranty ...

Page 188: ... 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 NOTE Check for leaks using a halide or electronic leak detector after charging the ice machine Important Manifold gau ges must be re moved pro perly to ensure th at n o refri gerant co...

Page 189: ...operly to ensure that no refrigerant contamination or loss occurs 8 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 the freeze cycle B Verify the refrigerant cylinder valve is closed C Open the high and low side valves on the manifold gauge set Any refrigerant in the lines will be pulled into the l...

Page 190: ...e or a similar 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...

Page 191: ...r acid oil test shows contamination 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 discolored acidic and s...

Page 192: ... Pull vacuum to 1000 microns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 5 psig B Pull vacuum to 500 microns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 5 psig 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 perform a press...

Page 193: ...g B Change the vacuum pump oil C Pull vacuum to 500 microns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 5 psig D Change the vacuum pump oil E Pull vacuum to 500 microns Run the vacuum pump for 1 additional hour 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 t...

Page 194: ...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 off tool Tighten the wing nuts until the block i...

Page 195: ...Part Number 80 01111 9 7 10 195 Using Pinch Off Tool SV1406 FIG A PINCHING OFF TUBING FIG B RE ROUNDING TUBING ...

Page 196: ...act is made with the stop screw approximately 2 5 6 3 cm 4 Remove right hand screw securing condenser to base 5 Pivot condenser forward to obtain 5 12 7 cm between the cabinet and condenser shroud Take care not to kink refrigeration tubing Accessing the Condenser Fan Motor Caution Do not move base p ast the st op scre w t ubing damage could result REMOVE THREE SCREWS AND PULL BASE FORWARD TO STOP ...

Page 197: ... stainless steel does not require as much flame contact as copper tubing Apply heat to the copper tubing first then the solenoid socket 15 silver solder is recommended although silver bearing solder in the 5 to 55 range can be used 1 Remove coil and verify direction of flow 2 Fit valve in place and align stem at the 12 00 position 3 Do not disassemble valve SV3069 DIRECTION OF FLOW ARROW SV3070 90...

Page 198: ...t B Heat the solenoid socket for 2 to 5 seconds and apply silver solder to joint C Do not attempt to fill solenoid flange with solder Solder will draw into socket 5 Install new liquid line drier 6 Leak check joints by pressurizing system with 150 psig nitrogen 7 Evacuate and re charge system to nameplate charge 8 Reinstall coil using a twisting motion and attach wiring SV3071 MAX 1300 F 700 C SV30...

Page 199: ...ngle pole double throw switch The switch is connected into a varying low D C voltage circuit Fan Control Cycle QM45 Q130 Q170 Q210 Q270 Volt Amp QM20 QM30 250 8 QM45 SM50 Q130 Q170 Q210 Q270 250 10 Control Setting Bin Thermostat Cut in 40 F 4 5 C Cut out 34 F 1 0 C Model Cut in Close Cut out Open QM45 145 psig 5 110 psig 5 Q130 250 psig 5 200 psig 5 Q170 275 psig 5 225 psig 5 Q210 275 psig 5 225 p...

Page 200: ...ilter Driers Drier with dirt retaining filtration Liquid Line Thermistor QM20 QM30 SM50 10 000 Ohms 2 at 25 C 77 F Cut out Cut in 450 psig 10 3103 kPa 69 31 bar 69 Automatic Reset Must be below 300 psig 2068 kPa 20 68 bar to reset Caution Use only Manitowoc thermistors ...

Page 201: ... Type QM20 4 6 oz 130 g NA R134A QM30 5 8 oz 165 g NA R134A QM45 8 oz 227 g NA R134A Q130 Tecumseh Compressor 11 oz 312 g 11 oz 312 g R404A Q130 Danfoss Compressor Before Serial Number 310047287 8 oz 227 g 11 oz 312 g R404A Q130 Danfoss Compressor After Serial Number 310047287 10 oz 290 g 12 oz 340 g R404A Q170 14 oz 397 g NA R404A Q210 15 oz 425 g 11 oz 312 g R404A Q270 Tecumseh Compressor 17 oz ...

Page 202: ...202 Part Number 80 01111 9 7 10 This Page Intentionally Left Blank ...

Page 203: ...ation visual inspection water system checklist ice formation pattern safety limits comparing evaporator inlet outlet temperatures hot gas valve analysis discharge and suction pressure analysis Ice production checks that are within 10 of the chart are considered normal This is due to variances in water and air temperature Actual temperatures will seldom match the chart exactly Zero out manifold gau...

Page 204: ...inutes 24 Hour Ice Production Based on average ice slab weight of 0 46 0 60 lb 200 275 g Air Temp Entering Condenser F C Freeze Time Harvest Time Water Temperature F C 50 10 68 20 86 30 68 20 15 18 16 19 16 19 1 5 3 5 77 25 16 19 18 21 18 21 86 30 20 23 21 24 21 24 95 35 24 27 26 29 26 29 Air Temp Entering Condenser F C Water Temperature F C 50 10 68 20 86 30 lb kg lb kg lb kg 68 20 46 21 42 19 37...

Page 205: ...mes in minutes 24 Hour Ice Production Based on ice slab weight of 44 60 lb 200 275 g Air Temp Entering Condenser F C Freeze Time Harvest Time Water Temperature F C 50 10 95 35 104 40 70 21 9 1 12 9 9 4 13 4 10 2 14 5 1 25 3 25 80 27 10 0 14 2 10 5 14 8 11 4 16 1 90 32 10 9 15 4 11 4 16 1 12 6 17 7 100 38 12 3 17 3 12 9 18 1 14 3 20 1 Air Temp Entering Condenser F C Water Temperature F C 50 10 70 2...

Page 206: ...tion Based on an average ice slab weight of 1 0 1 3 lb 400 600g Air Temp Entering Condenser F C Freeze Time Harvest Time Water Temperature F C 50 10 70 21 90 32 70 21 14 6 16 5 17 6 19 9 20 3 23 0 1 0 2 5 80 27 15 5 17 5 18 9 21 3 22 0 24 9 90 32 17 6 19 9 22 0 24 9 26 3 29 7 100 38 20 3 23 0 23 9 27 1 29 0 32 8 Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 lb kg lb kg lb...

Page 207: ...le Harvest Cycle Discharge Temp F C Suction Temp F C Discharge Temp F C Suction Temp F C 50 F 10 C 155 175 68 79 68 58 20 14 160 175 71 79 50 60 10 16 70 F 21 C 160 185 71 85 70 50 21 10 160 190 71 85 50 65 10 18 80 F 27 C 170 200 77 93 75 58 24 14 170 200 77 94 55 70 13 21 90 F 32 C 180 205 82 96 85 65 29 18 185 210 85 99 55 75 13 24 100 F 39 C 190 220 88 104 88 70 31 21 200 220 93 104 60 75 16 2...

Page 208: ...mperature F C 50 10 70 21 90 32 70 21 15 6 17 8 15 3 17 4 15 6 17 8 1 0 3 5 80 27 16 6 18 9 17 0 19 4 17 4 19 8 90 32 17 4 19 8 19 1 21 7 18 2 20 7 100 38 19 2 22 1 19 8 22 7 22 4 25 4 110 43 24 9 28 2 25 7 29 1 31 4 35 5 Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 70 21 53 54 53 80 27 50 49 48 90 32 48 44 46 100 38 40 39 38 110 43 35 34 28 Air Temp Entering Condenser F...

Page 209: ...re F C 50 10 70 21 90 32 70 21 10 2 11 7 12 4 14 1 14 6 16 5 1 0 2 5 80 27 11 2 12 8 13 0 14 8 15 5 17 5 90 32 13 0 14 8 15 5 17 5 17 6 19 9 100 38 14 6 16 5 17 6 19 9 20 3 23 0 Air Temp Entering Condenser F C Water Temperature F C 50 10 0 70 21 1 90 32 2 70 21 1 130 110 95 80 26 7 120 105 90 90 32 2 105 90 80 100 37 8 95 80 70 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge P...

Page 210: ...perature F C 50 10 70 21 90 32 70 21 10 2 12 4 12 3 14 8 14 3 17 2 0 75 2 5 80 27 11 7 14 1 13 6 16 3 16 1 19 3 90 32 13 6 16 3 15 2 18 2 18 3 21 9 100 38 15 2 18 2 18 3 21 9 21 1 25 2 Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 70 21 135 115 100 80 27 120 105 90 90 32 105 95 80 100 38 95 80 70 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressur...

Page 211: ...2 3 14 8 14 3 17 2 1 0 2 5 80 27 10 7 12 9 12 3 14 8 15 2 18 2 90 32 10 7 12 9 12 9 15 5 15 2 18 2 100 38 11 2 13 5 12 9 15 5 16 1 19 3 Air Temp Around Ice Machine F C Water Temperature F C 50 10 70 21 90 32 70 21 135 115 100 80 27 130 115 95 90 32 130 110 95 100 38 125 110 90 Condenser Water Consumption 90 32 Air Temperature Around Ice Machine Water Temperature F C 50 10 70 21 90 32 Gal 24 hours ...

Page 212: ...t Time Water Temperature F C 50 10 70 21 90 32 70 21 17 6 20 1 NA 24 5 28 0 1 0 2 5 80 27 NA 20 9 23 9 NA 90 32 20 9 23 9 24 5 28 0 28 1 31 9 100 38 NA NA 33 7 38 3 Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 70 21 175 NA 130 80 27 NA 150 NA 90 32 150 130 115 100 38 NA NA 97 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Press...

Page 213: ...0 70 21 90 32 70 21 14 8 16 9 17 5 19 9 19 8 22 5 1 0 2 5 80 27 16 1 18 3 19 2 21 8 21 9 24 9 90 32 17 5 19 9 21 2 24 0 24 5 27 8 100 38 19 2 21 8 23 6 26 8 27 8 31 5 Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 70 21 215 185 165 80 27 200 170 150 90 32 185 155 135 100 38 170 140 120 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Sucti...

Page 214: ... 17 8 19 2 21 8 1 0 2 5 80 27 14 8 16 9 16 1 18 3 19 8 22 5 90 32 15 6 17 8 17 0 19 3 21 2 24 0 100 38 16 1 18 3 17 5 19 9 21 9 24 9 Air Temp Around Ice Machine F C Water Temperature F C 50 10 70 21 90 32 70 21 220 205 170 80 27 215 200 165 90 32 205 190 155 100 38 200 185 150 Condenser Water Consumption 90 32 Air Temperature Around Ice Machine Water Temperature F C 50 10 70 21 90 32 Gal 24 hours ...

Page 215: ... Temperature F C 50 10 70 21 90 32 70 21 11 0 12 6 12 8 14 7 14 5 16 5 1 0 2 5 80 27 11 3 12 9 13 1 15 0 14 8 16 9 90 32 12 6 14 3 14 8 16 9 17 0 19 3 100 38 14 1 16 1 17 0 19 3 19 8 22 5 Air Temp Entering Condenser F C Water Temperature F C 50 10 70 21 90 32 70 21 280 245 220 80 27 275 240 215 90 32 250 215 190 100 38 225 190 165 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharg...

Page 216: ... 32 70 21 10 6 12 2 12 3 14 0 13 5 15 4 1 0 2 5 80 27 10 8 12 4 12 6 14 3 13 8 15 7 90 32 11 0 12 6 12 8 14 7 14 1 16 1 100 38 11 3 12 9 13 1 15 0 14 5 16 5 Air Temp Around Ice Machine F C Water Temperature F C 50 10 70 21 90 32 70 21 290 255 235 80 27 285 250 230 90 32 280 245 225 100 8 275 240 220 Condenser Water Consumption 90 32 Air Temperature Around Ice Machine Water Temperature F C 50 10 70...

Page 217: ... 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 Compressor Compartment Side Warning Always di sconnect po wer before w orking...

Page 218: ...SOLENOID SV1774 STARTING DEVICE TOGGLE SWITCH WASH BIN THERMOSTAT ON OFF FUSE TRANS CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY NOTE DIAGRAM SHOWN DURING THE FREEZE CYCLE SEE SERIAL PLATE FOR VOLTAGE WIRE NUMBER DESIGNATION IS MARKED AT EACH END OF WIRE L1 3 9 C R S OVERLOAD PROTECTOR L2 N 23 22 21 13 6 2 1 1 8 7 12 4 2 3 FEMALE MALE CONNECTOR 20 24 14 A ...

Page 219: ...ARTING DEVICE TOGGLE SWITCH WASH BIN THERMOSTAT ON OFF FUSE TRANS OVERLOAD PROTECTOR L1 27 3 C R S N 24 25 21 20 6 2 1 1 8 7 12 4 2 3 22 13 B OVERFLOW 2 OVERFLOW 1 JUMPER WIRE AIR COOLED 26 COMPRESSOR RELAY COIL 1 3 14 CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY NOTE DIAGRAM SHOWN DURING THE FREEZE CYCLE WIRE NUMBER DESIGNATION IS MARKED AT EACH END OF WIRE FEMALE MALE CONNECTO...

Page 220: ... STARTING DEVICE TOGGLE SWITCH WASH BIN THERMOSTAT ON OFF FUSE TRANS CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY NOTE DIAGRAM SHOWN DURING THE FREEZE CYCLE SEE SERIAL PLATE FOR VOLTAGE WIRE NUMBER DESIGNATION IS MARKED AT EACH END OF WIRE L1 3 9 C R S OVERLOAD PROTECTOR L2 N 23 22 21 13 6 2 1 1 8 7 12 4 2 3 FEMALE MALE CONNECTOR C 24 14 20 OVERFLOW 2 OVERFLOW 1 JUMPER WIRE AIR ...

Page 221: ...LENOID OVERLOAD PROTECTOR SV1776 STARTING DEVICE TOGGLE SWITCH WASH RELAY COIL ON OFF FUSE TRANS CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY NOTE DIAGRAM SHOWN DURING THE FREEZE CYCLE SEE SERIAL PLATE FOR VOLTAGE FAN CYCLE CONTROL BIN SWITCH BIN SWITCH LIGHT 22 24 23 20 21 2 3 6 5 4 3 2 1 7 8 9 11 10 12 15 13 2 4 C R S L1 L2 N ...

Page 222: ...RT RELAY START CAPACITOR BIN THERMO STAT L1 FUSE 7A TRANS CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY NOTE DIAGRAM SHOWN DURING THE FREEZE CYCLE FAN MOTOR DISPLAY BOARD DRAIN PUMP SWITCH WATER PUMP DRAIN PUMP L2 S C R 33 47 48 43 44 45 41 42 46 21 31 22 28 27 29 26 25 24 23 32 20 BIN LIGHT SWITCH ...

Page 223: ...D ONLY OVERLOAD PROTECTOR HOT GAS SOLENOID WATER PUMP STARTING DEVICE TOGGLE SWITCH WASH BIN SWITCH ON OFF FUSE TRANS NOTE DIAGRAM SHOWN DURING THE FREEZE CYCLE SEE SERIAL PLATE FOR VOLTAGE HARVEST LIGHT CONTACTOR COIL CONTACTOR CONTACTS FAN CYCLE CONTROL HIGH PRES CUTOUT ON L1 L2 N 22 24 23 20 21 10 11 2 3 7 5 4 14 15 13 12 R C S 8 9 6 3 2 1 ...

Page 224: ... COOLED ONLY COMPRESSOR HOT GAS SOLENOID WATER PUMP START CAPACITOR TOGGLE SWITCH WASH BIN SWITCH ON OFF FUSE TRANS NOTE DIAGRAM SHOWN DURING THE FREEZE CYCLE SEE SERIAL PLATE FOR VOLTAGE HARVEST LIGHT RELAY COIL RELAY CONTACTS FAN CYCLE CONTROL HIGH PRES CUTOUT ON L1 L2 N 22 24 23 20 21 10 11 2 3 7 5 4 14 15 13 12 R C S 8 9 6 3 2 1 11 10 13 3 START ...

Page 225: ...KING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING THE FREEZE CYCLE SEE SERIAL PLATE FOR VOLTAGE HARVEST LIGHT RED CONTACTOR CONTACTS HIGH PRES CUTOUT L1 L2 N 22 24 23 20 21 10 16 2 7 5 15 14 R C S 8 9 6 1 2 3 CONTACTOR COIL 3 7 2 16 48 47 S L M 1 S S 44 2 43 12 4 START RELAY CURRENT TYPE COMPRES SOR START CAPACITOR R C S 48 47 S S 44 2 START RELAY 49 46 5 1 45 16 2 7 RUN CAPACI TOR R R 43 45 49 FA...

Page 226: ... ONLY COMPRESSOR HOT GAS SOLENOID WATER PUMP START CAPACITOR TOGGLE SWITCH WASH BIN SWITCH ON OFF FUSE TRANS NOTE DIAGRAM SHOWN DURING THE FREEZE CYCLE SEE SERIAL PLATE FOR VOLTAGE HARVEST LIGHT RED RELAY RELAY CONTACTS FAN CYCLE CONTROL HIGH PRES CUTOUT L1 L2 N 22 24 23 20 21 10 11 2 3 7 5 4 14 15 13 12 R C S 8 9 6 1 2 3 11 10 13 3 ...

Page 227: ...Part Number 80 01111 9 7 10 227 Electronic Control Boards QM20 QM30 2 0 1 2 3 4 1 3 5 4 LIQUID LINE THERMISTOR CONNECTION ICE BRIDGE THICKNESS CONTROL POWER LIGHT 8 AMP FUSE ...

Page 228: ...228 Part Number 80 01111 9 7 10 QM45 Q130 Q170 Q210 Q270 ICE THICKNESS PROBE DC LOW VOLTAGE ELECTRICAL PLUG BIN SWITCH LIGHT 10 AMP FUSE HARVEST LIGHT AC LINE VOLTAGE ELECTRICAL PLUG ...

Page 229: ...Part Number 80 01111 9 7 10 229 SM50 FUSE 7A TRANSFORMER BIN LIGHT CONNECTION DISPLAY BOARD CONNECTION THERMISTOR BIN LIGHT SWITCH BIN THERMOSTAT CONNECTION ...

Page 230: ...230 Part Number 80 01111 9 7 10 Tubing Schematics QM20 QM30 Tubing Schematic SV3022 HEAT EXCHANGER CAP TUBE COMPRESSOR DRIER EVAPORATOR HOT GAS SOLENOID VALVE CONDENSER ...

Page 231: ...rt Number 80 01111 9 7 10 231 QM45 Q130 Tubing Schematic SV3024 HEAT EXCHANGER STRAINER COMPRESSOR DRIER EVAPORATOR HOT GAS SOLENOID AIR OR WATER CONDENSER EXPANSION VALVE RECEIVER Q130 WATER COOLED ONLY ...

Page 232: ...232 Part Number 80 01111 9 7 10 SM50 Tubing Schematic HEAT EXCHANGER COMPRESSOR DRIER EVAPORATOR HOT GAS SOLENOID VALVE CONDENSER CAP TUBE ...

Page 233: ...r 80 01111 9 7 10 233 Q170 Q210 Q270 Tubing Schematic SV3023 HEAT EXCHANGER STRAINER COMPRESSOR DRIER EVAPORATOR HOT GAS SOLENOID VALVE AIR OR WATER CONDENSER EXPANSION VALVE RECEIVER WATER COOLED ONLY COMPRESSOR ...

Page 234: ...234 Part Number 80 01111 9 7 10 This Page Intentionally Left Blank ...

Page 235: ......

Page 236: ...Manitowoc Foodservice 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 2008 Manitowoc Part Number 80 01111 9 7 10 ...

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