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Manitowoc Q130 series, Technician'S Handbook

The Manitowoc Q130 series Technician's Handbook is a comprehensive manual designed to guide technicians in the installation, maintenance, and troubleshooting of Manitowoc Q130 ice machines. Download this invaluable resource for free from manualshive.com and harness the expertise offered in this user manual to achieve optimal performance.

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Part Number 8001119 10/19

SM50 

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Diagnosing an Ice Machine 
that

 

Will

 

Not

 

Run . . . . . . . . . . . . . . . . . 144

Ice Machine Will Not Harvest  . . . . . . . 145
Ice Quality Is Poor — Cubes are Shallow, 
Incomplete or White  . . . . . . . . . . . . . . 146
Freeze Cycle Is Long, Low Ice Production 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Ice Machine Runs and No Ice Is Produced 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Analyzing Discharge Pressure  . . . . . . 149
Discharge Pressure High Checklist   . . 150
Freeze Cycle Discharge Pressure Low 
Checklist  . . . . . . . . . . . . . . . . . . . . . . . 150
Analyzing Suction Pressure  . . . . . . . . 151
Hot Gas Valve   . . . . . . . . . . . . . . . . . . 154

COMPONENT CHECK PROCEDURES

Main Fuse 

. . . . . . . . . . . . . . . . . . . . . . . . . 159

Function  . . . . . . . . . . . . . . . . . . . . . . . 159
Specifications  . . . . . . . . . . . . . . . . . . . 159
Check Procedure  . . . . . . . . . . . . . . . . 159

Bin Switch 

 . . . . . . . . . . . . . . . . . . . . . . . . 160

QM45/Q130/Q170/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

Summary of Contents for Q130 series

Page 1: ...Undercounter Ice Machines QM20 QM30 QM45 SM050 Q130 Q170 Q210 Q270 Technicians Handbook Part Number 8001119 10 19 ...

Page 2: ......

Page 3: ...e equipment Be sure to read the Caution statement before proceeding and work carefully Procedural Notices As you work on Manitowoc equipment be sure to read the procedural notices in this handbook These notices supply helpful information which may assist you as you work Throughout this handbook you will see the following types of procedural notices Text in an Important box provides you with inform...

Page 4: ... has been misused abused neglected damaged or altered modified from that of original manufactured specifications POTENTIAL PERSONAL INJURY SITUATION This ice machine contains refrigerant charge Installation and brazing of the line sets must be performed by a properly trained refrigeration technician aware of the Dangers of dealing with refrigerant charged equipment The technician must also be US G...

Page 5: ...ion Card 17 Commercial Warranty 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 Conn...

Page 6: ...for Cleaning and Sanitizing 69 Removal from Service Winterization 77 General 77 Self contained 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 8...

Page 7: ...ation Pattern 106 Safety Limit Feature 108 Analyzing Discharge Pressure 115 Analyzing Suction Pressure 117 Hot Gas Valve 121 Comparing Evaporator 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...

Page 8: ...ge Pressure Low Checklist 150 Analyzing Suction Pressure 151 Hot Gas Valve 154 COMPONENT CHECK PROCEDURES Main Fuse 159 Function 159 Specifications 159 Check Procedure 159 Bin Switch 160 QM45 Q130 Q170 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 1...

Page 9: ...arging Procedures 184 System Contamination Cleanup 190 General 190 Determining Severity of Contamination 190 Mild System Contamination Cleanup 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 Valves 197 COMPONENT SPECIFICATIONS Main Fuse 199 Bin...

Page 10: ...r 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 Q...

Page 11: ... technicians aware of the dangers of dealing with high voltage electricity and refrigerant under pressure QM Models the suffix E represents 230 volt 1 ph 50 hz machine Self contained Air cooled Self contained Water cooled QM20A N A QM30A N A QM45A 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 QD...

Page 12: ...essories BIN CASTER Replaces standard legs MANITOWOC CLEANER AND SANITIZER Manitowoc Ice Machine Cleaner and Sanitizer are available in convenient 16 oz 473 ml and 1 gal 3 78 l bottles These are the only cleaner and sanitizer approved for 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...

Page 13: ... their labeling Read and understand all labels printed on bottles before use Part Number 8001119 10 19 13 NOTE The Manitowoc Automatic Cleaning System AuCS accessory cannot be used with Undercounter ice machines SM50 QM20 QM30 QM45 Q130 Q170 Q210 or Q270 QM20 QM30 QM45 ice machines do not have a water curtain covering the evaporator Q130 Q210 Q170 Q270 have an ice damper that performs the function...

Page 14: ...r 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 8001119 10 19 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 8001119 10 19 SM50 MODEL SERIAL NUMBER PLATE ...

Page 17: ...for your convenience For a detailed explanation read the warranty bond shipped with each product Contact your 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 e...

Page 18: ...cations 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 materi...

Page 19: ...f 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: ...ses 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 d...

Page 21: ...TED 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 abo...

Page 22: ...arranty 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: ...t 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 ic...

Page 24: ...ce 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 mm...

Page 25: ...sition 4 Level the ice machine to ensure that the siphon system functions 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 Insta...

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 SV1...

Page 27: ...uration 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: ...5 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 a...

Page 29: ...rcuit Breaker Total Amps Q130 Before Serial Number 310047287 115 1 60 15 amp 6 8 208 230 1 60 15 amp 2 8 230 1 50 15 amp 2 8 Q130 After Serial Number 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 ...

Page 30: ... 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: ...heck valves on sink faucets dishwashers etc If water pressure exceeds the maximum recommended pressure 80 psig 5 5 bar obtain a water pressure regulator from your Manitowoc 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 flowin...

Page 32: ...nt 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 Plumbing must conform to state and local codes 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 inl...

Page 33: ...nside 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 Wa...

Page 34: ...5 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: ... 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 8001119 10 19 This Page Intentionally Left Blank ...

Page 37: ...nt 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: ...M45 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 8001119 10 19 39 QM20 QM30 WATER DISTRIBUTION TUBE WATER PUMP OUTLET HOSE WATERPUMP AND BRACKET ASSEMBLY EVAPORATOR ASSEMBLY WATER TROUGH OVERFLOW TUBE SV1716A ...

Page 40: ...40 Part Number 8001119 10 19 QM20 Ice Machines QM30 Ice Machines SV1711 ON OFF WASH TOGGLE SWITCH SV1681A ON OFF WASH TOGGLE SWITCH CONDENSER AIR FILTER ...

Page 41: ... Number 8001119 10 19 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 8001119 10 19 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: ...terior 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 Disconnect electric power to the ice machine at the electric service switch before ...

Page 44: ...er to check for dirt between the fins If dirt remains A Blow 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 bla...

Page 45: ... 95 0546 3 and 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 Do not mix Ice Machine Cleaner and Sanitizer solutions together It is a violation of Federal law to use these solutions in a manner inconsistent with their labeling Wear rubber gloves and saf...

Page 46: ...llow the ice to melt off the evaporator Step 2 Remove all ice from the bin Step 3 To start a cleaning cycle move the toggle switch to the WASH position Step 4 Add 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...

Page 47: ...e 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: ...n 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 pr...

Page 49: ... RIGHT THUMB SCREW 1 3 2 Do not force this removal Be sure the locating pin is clear of the hole before sliding the distribution tube out Q170 Q210 Q270 Water Distribution Tube Removal Loosen the two thumbscrews 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 ...

Page 50: ...001119 10 19 Disassembly SV1211 INNER TUBE TAB KEYWAY INNER TUBE 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 ...

Page 51: ...BE Q130 Water Distribution Tube Removal Loosen the two thumbscrews which secure 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 SV1741 KEYWAY TAB ...

Page 52: ...s 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: ...nd 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 REMOVE THE ICE DAMPER SV1689 1 UPPER THUMBSCREW SV1689 2 LOWER THUMBSCREWS REMOVE SIPHON TUBE ...

Page 54: ...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 SV1731F STEP 1 STEP 2 SV1731G STEP 2 STEP 1 ...

Page 55: ... Pull ice 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: ...ainst 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 d...

Page 57: ...ean 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 11...

Page 58: ... the WASH position Add the proper amount of Manitowoc Ice Machine Sanitizer to the water trough Disconnect electric power to the ice machine at the electric switch box before proceeding 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 par...

Page 59: ...anitizing 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 Re...

Page 60: ...er 8001119 10 19 QM20 QM30 CLEANING AND SANITIZING PROCEDURE Ice machine cleaner is used to remove lime scale and mineral deposits Ice machine sanitizer disinfects and removes algae and slime Caution Use only Manitowoc approved Ice Machine Cleaner part number 94 0546 3 and Sanitizer part number 94 0565 3 It is a violation of Federal law to use these solutions in a manner inconsistent with their la...

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 the evaporator Damage may resu...

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 DRAIN HOLE OVERFLOW TUBE Removing the Overflow Tube B Remove the Vinyl Hose Disconnect the water pump discharge hose from the distribution tube and water pump ...

Page 63: ...wer 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: ...n 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 Step...

Page 65: ... 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 or...

Page 66: ... 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: ...8 for removal of algae and slime Never use anything to force ice from the evaporator Damage may result 1 To start a cleaning cycle press the CLEAN switch The ice machine will initiate a 2 minute harvest to remove 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 th...

Page 68: ...thoroughly with clean water SANITIZING PROCEDURE Use sanitizer to remove algae or slime Do not use it to remove lime scale or other mineral deposits NOTE Always perform a cleaning procedure before sanitizing the ice machine 1 Mix 4 oz 120 ml sanitizer with 6 gal 13 L of warm water in a non metallic container 2 Take all components to sink for sanitizing Use the Sanitizer Water mixture and sanitize ...

Page 69: ... 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 board will perform a clean cycle and turn off automatically If the ice machine was in a delay mode the control board will perform a clean cycle and resume the delay period automatically REMOVAL OF PARTS FOR CLEANING AND...

Page 70: ...es To remove water shutter assembly Removing the water shutters while the water pump is running will allow water to spray from ice machine Disconnect the electrical power to the ice machine at the electric service switch box and turn off the water supply 1 Slide evaporator bucket forward 1 2 13 mm 2 Lift shutter assembly straight up Warning GRASP WATER SHUTTERS HERE WATER SHUTTERS SHUTTER ASSEMBLY...

Page 71: ...y 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: ...9 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 8001119 10 19 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: ...ull straight down until water pump disengages and electrical connector is visible 2 Disconnect the electrical connector 3 Remove the water pump from ice machine 4 Remove clamp from hose to remove from pump 5 Do not submerse the water pump motor in cleaner or sanitizer If soaking is required immerse pump to normal water level during the freeze Warning DO NOT IMMERSE MOTOR IN SOLUTION REMOVE CLAMP R...

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: ...1119 10 19 6 Soak the removed part s in a properly mixed solution 7 Use a soft bristle brush or sponge NOT a wire brush to carefully clean the parts 8 Use the solution and a brush to clean the top sides and bottom evaporator extrusions the inside of the ice machine panels and the entire inside of the bin NOTE Do not rinse sanitized components 9 Install the removed parts 10 Turn on the water and el...

Page 77: ...he warranty Follow the applicable procedure below SELF CONTAINED AIR COOLED ICE MACHINES 1 Disconnect the electric power at the circuit breaker or the electric service switch 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 open...

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: ...ughout the entire Freeze and Harvest Sequences The fan motor is wired 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: ... 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 of...

Page 81: ... 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 chi...

Page 82: ...n 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 wat...

Page 84: ...e 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 whi...

Page 85: ...y 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: ...he 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: ... 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 remains off until enough ice has been removed from the bin This causes the thermostat bulb holder to warm and close restarting the ice machine When the ice machine restarts it returns to the start up sequence steps 1 2 Long ...

Page 88: ... 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 C...

Page 89: ...hen 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: ...t 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 cu...

Page 91: ...Part Number 8001119 10 19 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: ...l 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 Do not touch electrical wires Disconnect power to the ice machine before making any ice thickness adjustments 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 sho...

Page 94: ...r 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 A...

Page 95: ...essing 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 Safety Timers The control board has the following non adjustable safety timers Ini...

Page 96: ...ff to indicate a 2 hour delay is in effect every 24 hours 3 Pressing the delay button again will energize the 4 hour light and initiate a four hour delay period every 24 hours 4 Pressing the delay button again will energize the 8 hour light and initiate an eight hour delay period every 24 hours 5 Pressing the delay button again will cancel the 24 hour repeat delay Start with step 1 to reenter 24 h...

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 time...

Page 98: ...98 Part Number 8001119 10 19 This Page Intentionally Left Blank ...

Page 99: ...reaker is closed 2 Verify control board fuse is okay 3 If the bin switch light functions the fuse is okay 4 Verify the bin switch functions properly A defective bin switch can falsely indicate a full bin 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 connectio...

Page 100: ...m 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 ti...

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 board...

Page 102: ... 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 har...

Page 103: ...inutes 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 pr...

Page 104: ...CKLIST 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: ... 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: ... 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 thinner...

Page 107: ...erable 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 single...

Page 108: ...g 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 s...

Page 109: ...During the Stand by Mode the harvest light will be flashing continuously and a safety limit indication can be viewed If the same safety 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: ... 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: ...re 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 off...

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 Rest...

Page 113: ...tem 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: ...let 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: ...ormal 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: ...nsable 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 High...

Page 117: ...he 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 s...

Page 118: ...eeze 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 follow...

Page 119: ...4 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 no...

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 evap...

Page 122: ...N THE FREEZE CYCLE Symptoms of a hot gas valve remaining partially open during the freeze cycle can be similar 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 th...

Page 123: ...et is on the suction side cool refrigerant It may be cool enough to touch even if the valve is leaking The inlet of the hot gas valve and the compressor discharge line could be hot enough to burn your hand Just touch them momentarily 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 h...

Page 124: ...st 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 v...

Page 125: ... 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 Do not simply insert the sensing device under the insulation It must be attached to and reading the actual temperature of the copper line 1 Use a quality temperature meter capable of taking temperature readings on curved copper lines 2 Attach the ...

Page 126: ...perature 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 norm...

Page 127: ...n 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 ov...

Page 128: ... 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 listed...

Page 129: ...ck 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 N...

Page 130: ...rge 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 faulty...

Page 131: ...lation 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 th...

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 refrig...

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 V...

Page 134: ...s closed 3 Verify control board fuse is OK If the power light functions the fuse is OK 4 Verify ICE OFF WASH toggle switch functions properly A defective toggle switch may keep the ice machine in the OFF 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 int...

Page 135: ...le 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 F...

Page 136: ...ted 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: ...nalysis 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 at the 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: ... 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 and no further action is needed If the slab weight is not with...

Page 139: ...d 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: ... 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 p...

Page 141: ...ce 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: ...e 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 of the 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 of the evaporator Ex...

Page 143: ...ipe mimics these symptoms exactly STARVING EXPANSION VALVE LOW REFRIGERANT CHARGE SYMPTOMS Ice Fill 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 ...

Page 144: ...ansformer is OK If the transformer is supplying power to the control board and the red control board light will not energize replace the control board 5 Verify the Power switch functions properly If the red 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 thermos...

Page 145: ...ched 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 t...

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: ...d 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 Wate...

Page 148: ...rect 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: ...essures 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 of...

Page 150: ...stem 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 refrig...

Page 151: ...mperature 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: ...ycle 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: ...rge 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 Cyc...

Page 154: ...ring 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 evaporato...

Page 155: ...n no ice produced Use the following procedure and table to help determine if a hot gas valve is remaining partially open during the freeze cycle Feeling the hot gas valve outlet or across the hot gas valve itself will not work for this comparison The hot gas valve outlet is on the suction side cool refrigerant It may be cool enough to touch even if the valve is leaking The inlet of the hot gas val...

Page 156: ...st 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 v...

Page 157: ...mined 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 th...

Page 158: ...le 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 ma...

Page 159: ...witch to OFF will not remove the power supplied to the control board Disconnect electrical power to the entire ice machine before proceeding SPECIFICATIONS QM20 QM30 The main fuse is 250 Volt 8 amp QM45 SM50 Q130 Q170 Q210 Q270 The main fuse is 250 Volt 10 amp 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 t...

Page 160: ... to clear the ice damper and holds it down After the ice damper 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 to allow 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...

Page 161: ... 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: ...ect 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: ...ect 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: ...e 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 High line voltage is applied to the control board terminals 8 and 2 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 Disconnect electrical power to ...

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: ...own 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 restart...

Page 167: ...during this procedure Avoid contact with the fan blade and the electrical connections 1 To access the thermostat remove the two screws attaching 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 s...

Page 168: ... 1 Verify the capillary tube is inserted correctly in the bulb holder 17 43 cm 2 Remove the 2 bottom front panels to access the bin thermostat 3 Disconnect wires 45 and 46 from the bin thermostat or control board and check the resistance 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 Clos...

Page 169: ...e high and low temperature ranges Do not simply insert the sensing device under the insulation It must be attached to and reading the actual temperature of the copper liquid line 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 sensin...

Page 170: ...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 boil...

Page 171: ...ce 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 generated...

Page 172: ...f 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 co...

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: ...ng 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 perfor...

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 r...

Page 176: ... 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 co...

Page 177: ...ressures 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 v...

Page 178: ...re 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 5 200...

Page 179: ... OFF to stop ice machine operation Check Procedure 1 Set ON OFF WASH switch to OFF 2 Connect manifold gauges 3 Hook voltmeter in parallel across 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...

Page 180: ...woc 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 The liquid line drier is covered as a warranty part The liquid line drier must be re...

Page 181: ...eclaim 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 def...

Page 182: ...se of contaminated recovered or recycled refrigerant is the sole responsibility of the servicing company Manitowoc approves the use of 1 New Refrigerant Must be of original nameplate type 2 Reclaimed Refrigerant 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 loc...

Page 183: ...vacuated 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 conver...

Page 184: ...he use of contaminated refrigerant Damage resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company Replace the liquid line drier before evacuating and recharging Use only a Manitowoc O E M liquid line filter drier to prevent voiding the warranty CONNECTIONS 1 Suction side of the compressor through the suction service valve 2 Discharge side of the compr...

Page 185: ... using a halide or electronic leak detector after charging the ice machine Follow the Charging Procedures below The charge is critical on all Manitowoc ice machines Use a scale or a charging cylinder to ensure the proper charge is installed 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...

Page 186: ...se 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 t...

Page 187: ...e drier before evacuating and recharging Use only a Manitowoc O E M liquid line filter drier to prevent voiding the warranty CONNECTIONS The QM series ice machines are critically charged There are no refrigerant access ports on QM series ice machines Remove piercing valves after charging Unit is critically charged Purge system with nitrogen while brazing to prevent build up of copper oxide in the ...

Page 188: ... charging scale and recovery unit or two stage vacuum pump 3 Open the high and low side valves on manifold gauges 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 half hour Turn off the pump and perform a standing vacu...

Page 189: ... the suction access fitting if necessary 6 Let the system settle for 2 to 3 minutes 7 Place the toggle switch in the ICE position NOTE Manifold gauges must be removed properly 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 cyc...

Page 190: ...tem contamination Obvious moisture or an acrid odor in the refrigerant indicates contamination If either condition is found or if contamination is suspected use a Total Test Kit from Totaline 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 contaminatio...

Page 191: ... 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 sm...

Page 192: ... evacuation procedure except replace the evacuation step with the following A 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...

Page 193: ...the evacuation step with the following A Pull vacuum to 1000 microns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 5 psig 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 additiona...

Page 194: ...sconnect power to the ice machine 2 Follow all manufacturers instructions supplied with the pinch off tool Position the pinch off tool around the 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 Al...

Page 195: ...Part Number 8001119 10 19 195 Using Pinch Off Tool SV1406 FIG A PINCHING OFF TUBING FIG B RE ROUNDING TUBING ...

Page 196: ...t and the base to the cabinet 3 Slide the base forward until contact 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 REMOVE THREE SCREWS AND PULL BASE FORWARD TO STOP SCR...

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: ... 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 SV307...

Page 199: ...gle 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 ps...

Page 200: ...lter Driers Drier with dirt retaining filtration Liquid Line Thermistor QM20 QM30 SM50 10 000 Ohms 2 at 25 C 77 F Use only Manitowoc thermistors 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 ...

Page 201: ... 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 482 g 16 oz 454 g R404A Q270 Danfoss Compressor 22 oz 624 g 16 oz 454 g R40...

Page 202: ...202 Part Number 8001119 10 19 This Page Intentionally Left Blank ...

Page 203: ...tion 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 gaug...

Page 204: ...nutes 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: ...es 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 21...

Page 206: ...ion 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: ...e 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 24...

Page 208: ...perature 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: ...e 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 Pr...

Page 210: ...erature 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 Pressure...

Page 211: ... 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 1...

Page 212: ... 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 Pressu...

Page 213: ... 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 Suctio...

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 1...

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 Discharge...

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: ...before working on electrical circuitry 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 Compressor Co...

Page 218: ...OLENOID 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: ...RTING 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 CONNECTOR...

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 C...

Page 221: ...ENOID 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: ...T 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: ... 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: ...ING 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 FAN...

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 8001119 10 19 227 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 8001119 10 19 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 8001119 10 19 229 SM50 FUSE 7A TRANSFORMER BIN LIGHT CONNECTION DISPLAY BOARD CONNECTION THERMISTOR BIN LIGHT SWITCH BIN THERMOSTAT CONNECTION ...

Page 230: ...230 Part Number 8001119 10 19 Tubing Schematics QM20 QM30 Tubing Schematic SV3022 HEAT EXCHANGER CAP TUBE COMPRESSOR DRIER EVAPORATOR HOT GAS SOLENOID VALVE CONDENSER ...

Page 231: ...art Number 8001119 10 19 231 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 8001119 10 19 SM50 Tubing Schematic HEAT EXCHANGER COMPRESSOR DRIER EVAPORATOR HOT GAS SOLENOID VALVE CONDENSER CAP TUBE ...

Page 233: ...er 8001119 10 19 233 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 8001119 10 19 This Page Intentionally Left Blank ...

Page 235: ......

Page 236: ... 2008 Manitowoc Part Number 8001119 10 19 MANITOWOC ICE 2110 SOUTH 26TH STREET MANITOWOC WI 54220 800 545 5720 WWW MANITOWOCICE COM ...

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