manualshive.com logo in svg

Manitowoc Marine Q 1000, Service Technician'S Handbook

Share
Download
Manitowoc Marine Q 1000 Service Technician'S Handbook Download Page 49

–39–

Q800/Q1000 -Remote - 

3 Phase With Terminal Board

TB31

TB37

TB32

TB35

TB34

(53)

TB33

(52)

(55)

(77)

(76)

(98)

(59)

(99)

(75)

HPR

SOLENOID

(79)

(78)

HARVEST

SOLENOID

DUMP

SOLENOID

(81)

(80)

WATER

PUMP

LIQUID LINE

SOLENOID

TB30

TB30

(82)

(83)

HIGH PRES

CUTOUT

TB30

TB30

CONTACTOR

CONTACTS

L1

(96)

(42)

COMPRESSOR

REMOTE

FAN MOTOR

RUN CAPACITOR

SEE SERIAL PLATE FOR VOLTAGE

CAUTION: DISCONNECT POWER BEFORE WORKING

ON ELECTRICAL CIRCUITRY.

DIAGRAM SHOWN DURING FREEZE CYCLE

REMOTE CONDENSER

L3 L2 L1

L2

L3

TB35

T2

T3 T1

TERMINATES AT

PIN CONNECTION

(F1)

(F2)

(61)

(60)

(57)

(58)

1F

1C

4
1

3
5

FUSE (7A)

TRANS.

(56)

ICE THICKNESS PROBE

TB30

BIN SWITCH LIGHT

HARVEST LIGHT/

SAFETY LIMIT CODE LIGHT

LOW D.C.

VOLTAGE

PLUG

(74)

(73)

TB30

CONTACTOR

COIL

(64)

(63)

BIN SWITCH

(62)

(66)

(65)

(69)

(67)

(68)

TOGGLE SWITCH

68

67

69

66
62

ICE
OFF

CLEAN

(62)

VIEW FOR WIRING

INTERNAL WORKING 

      VIEW

CLEAN LIGHT

WATER LEVEL LIGHT

WATER LEVEL PROBE

2

(22)

(21)

WATER

VALVE

1G

AUCS DISPENSE TIME

(20)

SV1649

Summary of Contents for Marine Q 1000

Page 1: ... Manitowoc Ice Inc P N 80 1099 9 8 03 ...

Page 2: ......

Page 3: ...ill see the following 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 Warning box alerts you to a potential personal injury situation Be sure to read the Warning statement before proceeding and work carefully Caution Text in a Caution box alerts you to a potential personal injury ...

Page 4: ...nd maintenance procedures outlined in this manual are not covered by the warranty Warning PERSONAL INJURY POTENTIAL Do not operate equipment that has been misused abused neglected damaged or altered modified from that of original manufactured specifications Warning PERSONAL INJURY POTENTIAL The ice machine head section contains refrigerant charge Installation and brazing of the line sets must be p...

Page 5: ...s 7 Removal from Service Winterization General 11 Self Contained Air Cooled Ice Machines 11 Water Cooled Ice Machines 11 Remote Ice Machines 12 AuCS Accessory 12 Ice Making Sequence of Operation Self Contained Air and Water Cooled 13 Initial Start Up or Start Up After Automatic Shut Off 13 Freeze Sequence 14 Harvest Sequence 15 Automatic Shut Off 16 Energized Parts Chart 17 Remote 19 Initial Start...

Page 6: ...600 Q1800 Self Contained 1 Phase Without Terminal Board 34 Q1300 Q1800 Self Contained 3 Phase With Terminal Board 35 Q1300 Q1600 Q1800 Self Contained 3 Phase Without Terminal Board 36 Q450 Q600 Q800 Q1000 Remote 1 Phase With Terminal Board 37 Q450 Q600 Q800 Q1000 Remote 1 Phase Without Terminal Board 38 Q800 Q1000 Remote 3 Phase With Terminal Board 39 Q800 Q1000 Remote 3 Phase Without Terminal Boa...

Page 7: ... 73 Water System Checklist 74 Ice Formation Pattern 75 Safety Limits 77 Analyzing Discharge Pressure 85 Analyzing Suction Pressure 88 Single Expansion Valve Ice Machines Comparing Evaporator Inlet and Outlet Temperatures 92 Discharge Line Temperature Analysis 96 How to Use the Refrigeration System Operational Analysis Tables 98 Refrigeration System Operational Analysis Tables 101 Pressure Control ...

Page 8: ... 450 Series Self Contained Air Cooled 128 Self Contained Water Cooled 129 Remote 130 Q600 Series Self Contained Air Cooled 131 Self Contained Water Cooled 132 Remote 133 Q800 Series Self Contained Air Cooled 134 Self Contained Water Cooled 135 Remote 136 Q1000 Series Self Contained Air Cooled 137 Self Contained Water Cooled 138 Remote 139 Q1300 Series Self Contained Air Cooled 140 Self Contained W...

Page 9: ...res 152 System Contamination Clean Up 157 General 157 Determining Severity Of Contamination 157 Cleanup Procedure 159 Replacing Pressure Controls Without Removing Refrigerant Charge 162 Filter Driers 164 Total System Refrigerant Charge 165 Additional Refrigerant Charges 166 For Line Sets Between 50 100 166 ...

Page 10: ...THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 11: ... 7 8 0 95 x 2 86 x 2 22 cm Q R 0450 A ICE MACHINE MODEL ICE CUBE SIZE R REGULAR D DICE Y HALF DICE CUBE SIZE 0 REGULAR 1 REGULAR 2 DICE 3 DICE 4 HALF DICE 5 HALF DICE CONDENSER TYPE AIR COOLED WATER COOLED AIR COOLED WATER COOLED AIR COOLED WATER COOLED A SELF CONTAINEDAIR COOLED W SELF CONTAINEDWATER COOLED N REMOTE AIR COOLED 9 REMOTE AIR COOLED CONDENSER TYPE ICE MACHINE SERIES ...

Page 12: ...EL SERIAL NUMBER DECAL affixed to the ice machine ICE MACHINE WARRANTY INFORMATION Owner Warranty Registration Card Warranty coverage begins the day the ice machine is installed If the OWNER WARRANTY REGISTRATION CARD is not returned Manitowoc will use the date of sale to the Manitowoc Distributor as the first day of warranty coverage for your new ice machine Important Complete and mail the OWNER ...

Page 13: ...on the date of the original installation LABOR 1 Labor required to repair or replace defective components is covered for three 3 years from the date of original installation 2 The evaporator is covered by an additional two 2 year five years total labor warranty beginning on the date of the original installation EXCLUSIONS The following items are not included in the ice machine s warranty coverage ...

Page 14: ...is intended exclusively for commercial application No warranty is extended for personal family or household purposes AUTHORIZED WARRANTY SERVICE To comply with the provisions of the warranty a refrigeration service company qualified and authorized by your Manitowoc Distributor or a Contracted Service Representative must perform the warranty repair NOTE If the dealer you purchased the ice machine f...

Page 15: ...o chart below for clearance requirements The ice machine must be protected if it will be subjected to temperatures below 32 F 0 C Failure caused by exposure to freezing temperatures is not covered by the warranty See Removal from Service Winterization ICE MACHINE HEAD SECTION CLEARANCE REQUIREMENTS Q1600 is not available as an air cooled model Q370 Self Contained Air Cooled Water Cooled Top Sides ...

Page 16: ...the stacking kit Q1600 is not available as an air cooled model Q450 Q600 Q800 Q1000 Stacked Self Contained Air Cooled Stacked Water Cooledand Remote Top Sides 16 40 64 cm 5 12 70 cm Back 5 12 70 cm 5 12 70 cm Q1300 Q1600 Q1800 Stacked Self Contained Air Cooled Stacked Water Cooledand Remote Top Sides 48 121 92 cm 24 60 96 cm Back 12 30 48 cm 12 30 48 cm ...

Page 17: ... hold a charge sufficient to operate the ice machine in ambient temperatures between 20 F 28 9 C and 120 F 49 C with line set lengths of up to 100 30 5 m LINE SET RISE DROP The maximum rise is 35 10 7 m The maximum drop is 15 4 5 m Caution If a line set has a rise followed by a drop another rise cannot be made Likewise if a line set has a drop followed by a rise another drop cannot be made ...

Page 18: ...o the formula below Multiply by 6 6 to get the calculated drop Example A condenser located 10 feet below the ice machine has a calculated drop of 66 feet 3 Insert the measured horizontal distance into the formula below No calculation is necessary 4 Add together the calculated rise calculated drop and horizontal distance to get the total calculated distance If this total exceeds 150 45 7 m move the...

Page 19: ... 9 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 20: ... 10 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 21: ...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 lines distribution tubes etc WATER COOLED ICE MACHINES 1 Perform steps 1 6 under Self Contained Air Co...

Page 22: ...he condenser until no water remains REMOTE ICE MACHINES 1 Move the ICE OFF CLEAN switch to OFF 2 Frontseat shut off the receiver service valves Hang a tag on the switch as a reminder to open the valves before restarting 3 Perform steps 1 6 under Self Contained Air Cooled Ice Machines AUCS ACCESSORY Refer to the AuCS Accessory manual for winterization of the AuCS Accessory SV1624 ...

Page 23: ...d water purge and it remains on throughout the entire Freeze and Harvest Sequences The water fill valve is energized at the same time as the compressor It remains on until the water level sensor closes for 3 continuous seconds or until a six minute time period has expired The harvest valve s remains on for 5 seconds during initial compressor start up and then shuts off At the same time the compres...

Page 24: ...he evaporator and into each cube cell where it freezes The water fill valve will cycle on then off one more time to refill the water trough When sufficient ice has formed the water flow not the ice contacts the ice thickness probe After approximately 7 seconds of continual water contact the Harvest sequence is initiated The ice machine cannot initiate a Harvest sequence until a 6 minute freeze loc...

Page 25: ...er fill valve does not energize during the water purge After the 45 second water purge the water fill valve water pump and dump valve de energize Refer to Water Purge Adjustment for details The harvest valve also opens at the beginning of the water purge to divert hot refrigerant gas into the evaporator 6 Harvest The harvest valve s remains open and the refrigerant gas warms the evaporator causing...

Page 26: ...r 7 seconds the ice machine shuts off The ice machine remains off for 3 minutes before it can automatically restart The ice machine remains off until enough ice has been removed from the storage bin to allow the ice to fall clear of the water curtain As the water curtain swings back to the operating position the bin switch re closes and the ice machine restarts steps 1 2 provided the 3 minute dela...

Page 27: ...r 5B Condenser Fan Motor Initial Start Up 1 Water Purge On Off On On Off Off Off 45 Seconds 2 Refrigeration System Start up Off On On Off On On May Cycle On Off 5 Seconds Freeze Sequence 3 Prechill Off May Cycle On Off during first 45 sec Off Off On On May Cycle On Off 30 Seconds 4 Freeze On Cycles On then Off one more time Off Off On On May Cycle On Off Unit 7 Sec Water Contact w Ice Thickness Pr...

Page 28: ...May Cycle On Off Bin Switch Activation 7 Automatic Shut Off Off Off Off Off Off Off Off Until Bin Switch Re closes Energized Parts Chart Continued Ice Making Sequence of Operation Control Board Relays Contactor Length of Time 1 Water Pump 2 Water Fill Valve 3 Harvest Valve 4 Water Dump Valve 5 Contactor Coil 5A Compressor 5B Condenser Fan Motor ...

Page 29: ...ng the initial refrigeration system start up 2 Refrigeration System Start Up The compressor and liquid line solenoid valve energize after the 45 second water purge and remain on throughout the entire Freeze and Harvest Sequences The water fill valve is energized at the same time as the compressor It remains on until the water level sensor closes for 3 continuous seconds or until a six minute time ...

Page 30: ... evaporator and into each cube cell where it freezes The water fill valve will cycle on and then off one more time to refill the water trough When sufficient ice has formed the water flow not the ice contacts the ice thickness probe After approximately 7 seconds of continual water contact the harvest sequence is initiated The ice machine cannot initiate a harvest sequence until a 6 minute freeze l...

Page 31: ...valve s remain open and the refrigerant gas warms the evaporator causing the cubes to slide as a sheet off the evaporator and into the storage bin The sliding sheet of cubes swings the water curtain out opening the bin switch The momentary opening and re closing of the bin switch terminates the harvest sequence and returns the ice machine to the freeze sequence Step 3 4 Automatic Shut Off 7 Automa...

Page 32: ...actor Coil b Liquid Line Solenoid 5A Compressor 5B Condenser Fan Motor Initial Start Up 1 Water Purge On Off On On Off Off Off 45 Seconds 2 Refrigeration System Start up Off On On Off On On On 5 Seconds Freeze Sequence 3 Prechill Off May Cycle On Off during first 45 sec Off Off On On On 30 Seconds 4 Freeze On Cycles On then Off one more time Off Off On On On Unit 7 Sec Water Contact w Ice Thicknes...

Page 33: ...7 Automatic Shut Off Off Off Off Off Off Off Off Until Bin Switch Recloses Remote Energized Parts Chart Continued Ice Making Sequence of Operation Control Board Relays Contactor Length of Time 1 Water Pump 2 Water Fill Valve 3 a Harvest Valve s b HPR Solenoid 4 Water Dump Valve 5 a Contactor Coil b Liquid Line Solenoid 5A Compressor 5B Condenser Fan Motor ...

Page 34: ... 24 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 35: ...agrams Internal Compressor Overload Some models have external compressor overloads Fan Motor Run Capacitor Some models do not incorporate fan motor run capacitor TB Terminal Board Connection Terminal board numbers are printed on the actual terminal board Wire Number Designation The number is marked at each end of the wire Multi Pin Connection Electrical Box Side Compressor Compartment Side Warning...

Page 36: ...HT SAFETY LIMIT CODE LIGHT TB35 TB30 CONTACTOR CONTACTS L1 42 COMPRESSOR FAN CYCLE CONTROL FAN MOTOR AIR COOLED ONLY RUN CAPACITOR L2 N SEE SERIAL PLATE FOR VOLTAGE CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE TERMINATES AT PIN CONNECTION PTCR TB30 TB30 LOW D C VOLTAGE PLUG 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 ICE OFF ...

Page 37: ...IN SWITCH LIGHT CLEAN OFF ICE 68 69 62 49 47 COMPRESSOR OVERLOAD INTERNAL 230V 50 60 HZ R C S 86 85 51 48 CONTACTOR CONTACTS 42 L1 FAN CYCLE CONTROL RUN CAPACITOR FAN MOTOR AIR COOLED ONLY 50 62 66 VIEW FOR WIRING 67 68 69 SEE SERIAL PLATE FOR VOLTAGE L2 N 74 TERMINATES AT PIN CONNECTION 59 58 56 98 DUMP SOLENOID 57 81 99 75 80 76 HARVEST SOLENOID 77 WATER VALVE 21 22 60 61 55 HIGH PRES CUTOUT L1 ...

Page 38: ...LIMIT CODE LIGHT LOW D C VOLTAGE PLUG CONTACTOR CONTACTS L1 42 COMPRESSOR COMPRESSOR RUN CAPACITOR FAN CYCLE CONTROL FAN MOTOR AIR COOLED ONLY RUN CAPACITOR L2 N SEE SERIAL PLATE FOR VOLTAGE CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE TERMINATES AT PIN CONNECTION PTCR PTCR 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 ICE OFF ...

Page 39: ...IGHT HARVEST LIGHT SAFETY LIMIT CODE LIGHT LOW D C VOLTAGE PLUG B35 TB30 CONTACTOR CONTACTS L1 42 COMPRESSOR RUN CAPACITOR FAN CYCLE CONTROL FAN MOTOR AIR COOLED ONLY RUN CAPACITOR L2 N SEE SERIAL PLATE FOR VOLTAGE CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE TERMINATES AT PIN CONNECTION PTCR TB30 64 63 BIN SWITCH 62 65 69 67 68 TOGGLE SWITCH 68...

Page 40: ... SAFETY LIMIT CODE LIGHT LOW D C VOLTAGE PLUG CONTACTOR CONTACTS L1 42 COMPRESSOR FAN CYCLE CONTROL FAN MOTOR AIR COOLED ONLY RUN CAPACITOR L2 N SEE SERIAL PLATE FOR VOLTAGE CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE TERMINATES AT PIN CONNECTION PTCR 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 ICE OFF CLEAN 62 VIEW FOR WIRI...

Page 41: ...CUITRY DIAGRAM SHOWN DURING FREEZE CYCLE TERMINATES AT PIN CONNECTION 61 60 57 58 1F 1C 4 1 3 5 FUSE 7A TRANS 56 ICE THICKNESS PROBE TB30 BIN SWITCH LIGHT HARVEST LIGHT SAFETY LIMIT CODE LIGHT LOW D C VOLTAGE PLUG TB32 TB35 TB34 53 TB33 52 HIGH PRES CUTOUT L1 96 42 COMPRESSOR L3 L2 L1 L2 L3 TB35 T2 T3 T1 55 TB30 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 ICE OFF CLEAN 66 62 VI...

Page 42: ...T CODE LIGHT LOW D C VOLTAGE PLUG CONTACTOR CONTACTS L1 L2 L3 T2 T1 T3 FAN CYCLE CONTROL FAN MOTOR AIR COOLED ONLY RUN CAPACITOR SEE SERIAL PLATE FOR VOLTAGE CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE TERMINATES AT PIN CONNECTION 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 ICE OFF CLEAN 62 VIEW FOR WIRING INTERNAL WORKING V...

Page 43: ...LTAGE PLUG TB35 TB30 CRANKCASE HEATER 94 95 TB35 TB30 CONTACTOR CONTACTS CONTACTOR CONTACTS L2 L1 96 42 COMPRESSOR RUN CAPACITOR FAN CYCLE CONTROL FAN MOTOR AIR COOLED ONLY RUN CAPACITOR L2 N SEE SERIAL PLATE FOR VOLTAGE CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE TERMINATES AT PIN CONNECTION PTCR 44 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SW...

Page 44: ... D C VOLTAGE PLUG CONTACTOR CONTACTS CONTACTOR CONTACTS L1 L2 COMPRESSOR CRANKCASE HEATER RUN CAPACITOR FAN CYCLE CONTROL FAN MOTOR AIR COOLED ONLY RUN CAPACITOR L2 N SEE SERIAL PLATE FOR VOLTAGE CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE TERMINATES AT PIN CONNECTION PTCR 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 ICE OFF ...

Page 45: ...ES AT PIN CONNECTION 61 60 57 58 1F 1C 4 1 3 5 FUSE 7A TRANS 56 ICE THICKNESS PROBE TB30 BIN SWITCH LIGHT HARVEST LIGHT SAFETY LIMIT CODE LIGHT TB32 TB35 TB34 53 TB33 52 HIGH PRES CUTOUT TB35 CRANKCASE HEATER 94 95 L1 96 42 COMPRESSOR L3 L2 L1 L2 L3 TB35 T2 T3 T1 55 LOW D C VOLTAGE PLUG 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 ICE OFF CLEAN 66 62 VIEW FOR WIRING INTERNAL WOR...

Page 46: ...TES AT PIN CONNECTION 61 60 57 59 58 1F 1C 4 2 1 5 FUSE 7A TRANS 56 ICE THICKNESS PROBE BIN SWITCH LIGHT HARVEST LIGHT SAFETY LIMIT CODE LIGHT 51 HIGH PRES CUTOUT CRANKCASE HEATER 94 95 L1 96 COMPRESSOR L3 L2 L1 L2 L3 T2 T3 T1 LOW D C VOLTAGE PLUG 64 88 89 55 42 63 BIN SWITCH 62 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 ICE OFF CLEAN 66 62 VIEW FOR WIRING INTERNAL WORKING VIEW N 50HZ ONLY NOTE WIRE...

Page 47: ...G FREEZE CYCLE REMOTE CONDENSER TERMINATES AT PIN CONNECTION F1 F2 61 60 57 58 1F 1C 4 1 3 FUSE 7A TRANS 56 ICE THICKNESS PROBE TB30 BIN SWITCH LIGHT HARVEST LIGHT SAFETY LIMIT CODE LIGHT 74 73 TB30 CONTACTOR COIL R R C S R TB34 OVERLOAD 53 TB33 52 51 48 45 46 50 49 47 TB35 CONTACTOR CONTACTS L1 42 COMPRESSOR RUN CAPACITOR PTCR TB30 TB30 LOW D C VOLTAGE PLUG 64 63 BIN SWITCH 62 66 65 69 67 68 TOGG...

Page 48: ... SAFETY LIMIT CODE LIGHT LOW D C VOLTAGE PLUG CONTACTOR CONTACTS L1 COMPRESSOR RUN CAPACITOR LIQUID LINE SOLENOID REMOTE FAN MOTOR REMOTE CONDENSER RUN CAPACITOR L2 N SEE SERIAL PLATE FOR VOLTAGE CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE PTCR F1 F2 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 ICE OFF CLEAN 62 VIEW FOR WIRIN...

Page 49: ...NECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE REMOTE CONDENSER L3 L2 L1 L2 L3 TB35 T2 T3 T1 TERMINATES AT PIN CONNECTION F1 F2 61 60 57 58 1F 1C 4 1 3 5 FUSE 7A TRANS 56 ICE THICKNESS PROBE TB30 BIN SWITCH LIGHT HARVEST LIGHT SAFETY LIMIT CODE LIGHT LOW D C VOLTAGE PLUG 74 73 TB30 CONTACTOR COIL 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 I...

Page 50: ...ON DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE REMOTE CONDENSER L3 L2 L1 L2 L3 T2 T3 T1 F1 F2 61 20 60 57 58 1F 1C 4 2 1 5 FUSE 7A TRANS 56 ICE THICKNESS PROBE BIN SWITCH LIGHT HARVEST LIGHT SAFETY LIMIT CODE LIGHT LOW D C VOLTAGE PLUG CONTACTOR COIL 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 ICE OFF CLEAN 62 VIEW FOR WIRING INTERN...

Page 51: ... FREEZE CYCLE REMOTE CONDENSER TERMINATES AT PIN CONNECTION F1 F2 61 60 57 58 1F 1C 4 1 3 5 FUSE 7A TRANS 56 ICE THICKNESS PROBE TB30 BIN SWITCH LIGHT HARVEST LIGHT SAFETY LIMIT CODE LIGHT LOW D C VOLTAGE PLUG R R C S R OVERLOAD 48 45 46 50 49 47 74 73 TB30 CONTACTOR COIL TB35 TB30 CRANKCASE HEATER 94 95 TB30 CONTACTOR CONTACTS L2 96 COMPRESSOR RUN CAPACITOR PTCR 44 64 63 BIN SWITCH 62 66 65 69 67...

Page 52: ...ERLOAD REMOTE FAN MOTOR RUN CAPACITOR SEE SERIAL PLATE FOR VOLTAGE CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE REMOTE CONDENSER L1 L2 N F1 F2 F2 61 60 57 58 1F 1C 4 1 3 5 FUSE 7A TRANS 56 ICE THICKNESS PROBE BIN SWITCH LIGHT HARVEST LIGHT SAFETY LIMIT CODE LIGHT LOW D C VOLTAGE PLUG CONTACTOR COIL 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITC...

Page 53: ...96 42 COMPRESSOR REMOTE FAN MOTOR RUN CAPACITOR SEE SERIAL PLATE FOR VOLTAGE CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE REMOTE CONDENSER L3 L2 L1 L2 L3 TB35 T2 T3 T1 TERMINATES AT PIN CONNECTION F1 F2 61 60 57 58 1F 1C 4 1 3 5 FUSE 7A TRANS 56 ICE THICKNESS PROBE TB30 BIN SWITCH LIGHT HARVEST LIGHT SAFETY LIMIT CODE LIGHT LOW D C VOLTAGE PLUG ...

Page 54: ...ION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE REMOTE CONDENSER L3 L2 L1 L2 L3 T2 T3 T1 F1 F2 61 20 60 57 58 1F 1C 4 2 1 5 FUSE 7A TRANS 56 74 ICE THICKNESS PROBE BIN SWITCH LIGHT HARVEST LIGHT SAFETY LIMIT CODE LIGHT LOW D C VOLTAGE PLUG CONTACTOR COIL 64 63 BIN SWITCH 62 66 65 69 67 68 TOGGLE SWITCH 68 67 69 66 62 ICE OFF CLEAN 62 VIEW FOR WIRING IN...

Page 55: ...ard along with inputs controls all electrical components including the ice machine sequence of operation Prior to diagnosing you must understand how the inputs affect the control board operation Refer to specific component specifications inputs wiring diagrams and ice machine sequence of operation sections for details As an example refer to Ice Thickness Probe for information relating to how the p...

Page 56: ...losed the fuse is good 2 Remove the fuse Check for continuity across the fuse with an ohmmeter Warning High line voltage is applied to the control board terminals 55 and 56 at all times Removing the control board fuse or moving the toggle switch to OFF will not remove the power supplied to the control board Warning Disconnect electrical power to the entire ice machine before proceeding Reading Res...

Page 57: ...ains off until enough ice is removed from the storage bin to allow the sheet of cubes to drop clear of the water curtain As the water curtain swings back to the operating position the bin switch closes and the ice machine restarts provide the 3 minute delay has expired SPECIFICATIONS The bin switch is a magnetically operated reed switch The magnet is attached to the lower right corner of the water...

Page 58: ...in switch light off indicates the bin switch has opened properly OHM TEST 1 Disconnect the bin switch wires to isolate the bin switch from the control board 2 Connect an ohmmeter to the disconnected bin switch wires 3 Cycle the bin switch by opening and closing the water curtain NOTE To prevent misdiagnosis Always use the water curtain magnet to cycle the switch Larger or smaller magnets will affe...

Page 59: ...sequence If the ice machine goes into Harvest sequence while the water curtain is removed one of the following will happen Water curtain remains off When the Harvest cycle time reaches 3 5 minutes and the bin switch is not closed the ice machine stops as though the bin were full Water curtain is put back on If the bin switch closes prior to reaching the 3 5 minute point the ice machine immediately...

Page 60: ... for correct wiring 2 Isolate the toggle switch by disconnecting all wires from the switch or by disconnecting the Molex connector and removing wire 69 from the toggle switch 3 Check across the toggle switch terminals using a calibrated ohmmeter Note where the wire numbers are connected to the switch terminals or refer to the wiring diagram to take proper readings 4 Replace the toggle switch if oh...

Page 61: ...sly flash when the ice machine is shut off on a safety limit and to indicate which safety limit shut off the ice machine FREEZE TIME LOCK IN FEATURE The ice machine control system incorporates a freeze time lock in feature This prevents the ice machine from short cycling in and out of harvest The control board locks the ice machine in the freeze cycle for six minutes If water contacts the ice thic...

Page 62: ... the water trough 1 Inspect the bridge connecting the cubes It should be about 1 8 in 32 cm 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 in 15 cm The starting point before final adjustment is a...

Page 63: ...ution while disassembling and cleaning water circuit components soak ice thickness probe for 10 minutes or longer 3 Clean all ice thickness probe surfaces including all plastic parts do not use abrasives Verify the ice thickness probe cavity is clean Thoroughly rinse ice thickness probe including cavity with clean water then dry completely Incomplete rinsing and drying of the ice thickness probe c...

Page 64: ...and any cabinet ground Monitor the Harvest light Harvest Light On The Harvest light comes on and 6 10 seconds later the 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 thickness control circuitry is functioning properly The ice machine is...

Page 65: ...y Harvest Light Off The Harvest light does not come on The control board is causing the malfunction ICE MACHINE CYCLES INTO HARVEST BEFORE WATER CONTACT WITH THE ICE THICKNESS PROBE Step 1 Bypass the freeze time lock in feature by moving the ICE OFF CLEAN switch to OFF and back to ICE Wait until the water starts to flow over the evaporator then monitor the Harvest light Step 2 Disconnect the ice t...

Page 66: ...ater pump housing The water level is not adjustable If the water level is incorrect check the water level probe for damage probe bent etc Repair or replace the probe as necessary WATER INLET VALVE SAFETY SHUT OFF In the event of a water level probe failure this feature limits the water inlet valve to a six minute on time Regardless of the water level probe input the control board automatically shu...

Page 67: ... the water trough After 45 seconds into the Freeze cycle The water inlet valve will cycle ON and then OFF one more time to refill the water trough The water inlet valve is now OFF for the duration of the Freeze sequence HARVEST CYCLE CIRCUITRY The water level probe does not control the water inlet valve during the Harvest cycle During the Harvest cycle water purge the water inlet valve energizes t...

Page 68: ...o any cabinet ground Refer to the chart on the next page Important This restart must be done prior to performing diagnostic procedures This assures the ice machine is not in a Freeze cycle water inlet valve safety shut off mode You must complete the entire diagnostic procedure within 6 minutes of starting Important For the test to work properly you must wait until the Freeze cycle starts prior to ...

Page 69: ...owing into the Water Trough The Water Level Light Is The Water Inlet Valve Solenoid Coil Is Cause No On De energized This is normal operation Do not change any parts Yes On De energized The water inlet valve is causing the problem Yes Off Energized Proceed to step 3 ...

Page 70: ...restart this test by disconnecting the jumper wire restarting the ice machine step 1 and then reinstalling the jumper wire to terminal 1F after the compressor starts Step 3 Jumper Wire Connected from Control Board Terminal 1F to Ground Is Water Flowing into the Water Trough The Water Level Light Is The Water Inlet Valve Solenoid Coil Is Cause No On De energized The water level probe is causing the...

Page 71: ...es and then refer to the chart Important This restart must be done prior to performing diagnostic procedures This assures the ice machine is not in a Freeze cycle water inlet valve safety shut off mode You must complete the entire diagnostic procedure within 6 minutes of starting Step 2 Checking for Normal Operation Is Water Flowing into the Water Trough The Water Level Light Is The Water Inlet Va...

Page 72: ...ater level probe restart the ice machine step 1 and then disconnect the water level probe after the compressor starts Step 3 Disconnect Probe from 1F Is Water Flowing into the Water Trough The Water Level Light Is The Water Inlet Valve Solenoid Coil Is Cause Yes Off Energized The water level probe is causing the problem Clean or replace the water level probe No Off Energized The water inlet valve ...

Page 73: ...properly A defective bin switch can falsely indicate a full bin of ice 5 Verify ICE OFF CLEAN 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 Be sure steps 1 6 were followed thoroughly Intermittent problems ar...

Page 74: ...for the compressor The resistance values between C and S and between C and R when added together should equal the resistance value between S and R 3 If the overload is open there will be a resistance reading between S and R and open readings between C and S and between C and R Allow the compressor to cool then check the readings again THREE PHASE COMPRESSORS 1 Disconnect power from the condensing ...

Page 75: ...g component and a mechanically seized compressor To determine which you have Install high and low side gauges Try to start the compressor Watch the pressures closely If the 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 ...

Page 76: ...s before testing TROUBLESHOOTING PTCR S WHY A GOOD PTCR MAY FAIL TO START THE COMPRESSOR A good PTCR might not operate properly at start up because The ice machine s 3 minute delay has been overridden Opening and closing the service disconnect or cycling the toggle switch from OFF to ICE will override the delay period The control box temperature is too high Though rare very high air temperatures i...

Page 77: ...seconds after the compressor starts Make sure this is occurring and the harvest valve and HPR solenoid coil is functional before assuming that the PTCR is bad CHECKING THE PTCR 1 Visually inspect the PTCR Check for signs of physical damage NOTE The PTCR case temperature may reach 210 F 100 C while the compressor is running This is normal Do not change a PTCR just because it is hot 2 Wait at least ...

Page 78: ... Mite Part Number Room Temperature Resistance Q200 Q280 Q320 Q420 Q450 8505003 305C20 22 50 Ohms Q600 Q800 Q1000 8504993 305C19 18 40 Ohms Q1300 Q1600 Q1800 8504913 305C9 8 22 Ohms Manitowoc PTCR s 8505003 8504993 Manitowoc PTCR s 8504913 ...

Page 79: ... 69 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 80: ... 70 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 81: ... and may be a determining factor in the final diagnosis Ask these questions before beginning service When does the ice machine malfunction night day all the time only during the Freeze cycle etc When do you notice low ice production one day a week every day on weekends etc Can you describe exactly what the ice machine seems to be doing Has anyone been working on the ice machine During store shutdo...

Page 82: ... conditions determined in step 1 to find published 24 Hour Ice Production _____ Times are in minutes Example 1 min 15 sec converts to 1 25 min 15 seconds 60 seconds 25 minutes Weights are in pounds Example 2 lb 6 oz converts to 2 375 lb 6 oz 16 oz 375 lb 3 Perform an ice production check using the formula below Weighing the ice is the only 100 accurate check However if the ice pattern is normal an...

Page 83: ...ent to lower the load conditions is required Contact the local Manitowoc Distributor for information on available options and accessories Installation Visual Inspection Checklist Possible Problem List Corrective Action List 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 se...

Page 84: ...ater 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 Water dump valve leaking during the Freeze cycle Clean replace dump valve as needed Vent tube is not installed on water outlet drain See Installation Instructions Hoses fittings etc are leaking water Repa...

Page 85: ...rmal 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 bottom of the evaporator than on the top At the end of the Freeze cycle ice formation on the top will be close to or just a bit thinner than ice formation on the bottom The dimples in the cubes at the top of the evaporator may be more pronounced than ...

Page 86: ...on the bottom of the evaporator Possible cause Insufficient water flow flooding TXV etc 4 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 spot in the middle of the evaporator This is generally caused by loss of heat transfer from the tubing on the backside of the evaporator 5 No Ice Formation The ice machine ...

Page 87: ...e time reaches 60 minutes the control board automatically initiates a harvest cycle Control Board with Black Microprocessor If 3 consecutive 60 minute freeze cycles occur the ice machine stops Control Board with Orange Label on Microprocessor If 6 consecutive 60 minute freeze cycles occur the ice machine stops Safety Limit 2 If the harvest time reaches 3 5 minutes the control board automatically r...

Page 88: ... and 2 to indicate which safety limit stopped the ice machine After safety limit indication the ice machine will restart and run until a safety limit is exceeded again Control Board with Orange Label on Microprocessor When a safety limit condition is exceeded for 3 consecutive cycles the control board enters the limit into memory and the ice machine continues to run Use the following procedures to...

Page 89: ...s to determine which safety limit has stopped the machine 1 Move the toggle switch to OFF 2 Move the toggle switch back to ICE 3 Watch the harvest light It will flash one or two times corresponding to safety limit 1 or 2 to indicate which safety limit stopped the ice machine After safety limit indication the ice machine will restart and run until a safety limit is exceeded again Orange Label CONTR...

Page 90: ...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 one night a week etc When a high pressure cut out or a safety limit stops the ice machine they are doing what...

Page 91: ...e switch is moved to the OFF position and then back to the ICE 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 ice machine restarting then the ice machine did not stop because it exceeded a safety limit SAFETY LIMIT CHECKLIST The following checklists are designed to assist the service technician in an...

Page 92: ...rature 90 F 32 2 C max Clogged water distribution tube Dirty defective water fill valve Dirty defective water dump valve Defective water pump Electrical System Ice thickness probe out of adjustment Harvest cycle not initiated electrically Contactor not energizing Compressor electrically non operational Restricted condenser airflow High inlet air temperature 110 F 43 3 C max Condenser discharge air...

Page 93: ...est time exceeds 3 5 minutes for 3 consecutive harvest cycles or Control Board with Orange Label on Microprocessor Harvest time exceeds 3 5 minutes for 500 consecutive harvest cycles Possible Cause Checklist Improper Installation Refer to Installation Visual Inspection Checklist Water System Water area evaporator dirty Dirty defective water dump valve Vent tube not installed on water outlet drain ...

Page 94: ...y Bin switch defective Premature harvest Refrigeration System Non Manitowoc components Water regulating valve dirty defective Improper refrigerant charge Defective head pressure control valve remotes Defective harvest valve TXV flooding check bulb mounting Defective fan cycling control ...

Page 95: ...e ______ 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 the Freeze cycle when load is greatest...

Page 96: ...ive fan cycling control Defective fan motor Restricted Condenser water flow Low water pressure 20 psi min High inlet water temperature 90 F 32 2 C max Dirty condenser Dirty Defective water regulating valve Water regulating valve out of adjustment Improper Refrigerant Charge Overcharged Non condensable in system Wrong type of refrigerant Other Non Manitowoc components in system High side refrigeran...

Page 97: ...Undercharged Wrong type of refrigerant Water regulating valve water cooled condensers Out of adjustment Defective Other Non Manitowoc components in system High side refrigerant lines component restricted after mid condenser Defective head pressure control valve Defective fan cycle control NOTE Do not limit your diagnosis to only the items listed in the checklists ...

Page 98: ...ering 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 99: ...sig In the example the proper suction pressure should be approximately 44 psig at 7 minutes 41 psig at 9 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 Manifold gauges were connected to the example ice machine and suction pressure readings taken as follows psig Beginning of Freeze cycle 59 at...

Page 100: ...rge Pressure Discharge pressure is too high and is affecting low side refer to Freeze Cycle Discharge Pressure High Checklist Improper Refrigerant Charge Overcharged Wrong type of refrigerant Other Non Manitowoc components in system HPR solenoid leaking Harvest valve leaking TXV flooding check bulb mounting Defective compressor ...

Page 101: ... 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 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 not limit your diagnosis t...

Page 102: ...he evaporator vary by model and change throughout the freeze cycle This makes documenting the normal inlet and outlet temperature readings difficult The key to the diagnosis lies in the difference between the two temperatures five minutes into the freeze cycle These temperatures must be within 7 of each other Use this procedure to document freeze cycle inlet and outlet temperatures 1 Use a quality...

Page 103: ...difference between them 5 Use this with other information gathered on the Refrigeration System Operational Analysis Table to determine the ice machine malfunction ____________ Inlet Temperature ____________ Outlet Temperature _____________ Difference Must be within 7 at 5 minutes into freeze cycle ...

Page 104: ... freeze cycle 1 Wait five minutes into the freeze cycle 2 Feel the inlet of the harvest valve s 3 Feel the compressor discharge line 4 Compare the temperature of the inlet of the harvest valves to the temperature of the compressor discharge line Important Feeling the harvest valve outlet or across the harvest valve itself will not work for this comparison The harvest valve outlet is on the suction...

Page 105: ...hes the temperature of a hot compressor discharge line 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 valve and the compressor discharge l...

Page 106: ... 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 160 F 71 1 C on a normally operating ice machine PROCEDURE C...

Page 107: ...W 160 F 71 1 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 overfeeding of the expansion valve Verify the expansion valve sensing bulb is positioned...

Page 108: ...the Operation Analysis column Read down the left Operational Analysis column Perform all procedures and check all information listed Each item in this column has supporting reference material to help analyze each step 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...

Page 109: ...e replacing an expansion valve 1 Add refrigerant charge in 2 to 4 oz increments as a diagnostic procedure to verify a low charge Do not add more than 30 of nameplate refrigerant charge If the problem is corrected the ice machine is low on charge Find the refrigerant leak 2 The ice machine must operate with the nameplate charge If the leak cannot be found proper refrigerant procedures must still be...

Page 110: ...lve machines the service technician should be able to tell which TXV is flooding by analyzing ice formation patterns Change only the flooding expansion valve COLUMN 4 COMPRESSOR Replace the compressor and start components To receive warranty credit the compressor ports must be properly sealed by crimping and soldering them closed Old start components must be returned with the faulty compressor ...

Page 111: ...tem All installation and water related problems must be corrected before proceeding with chart Ice Formation Pattern Ice formation is extremely thin on outlet of evaporator or No ice formation on the entire evaporator Ice formation is extremely thin on outlet of evaporator or No ice formation on entire evaporator Ice formation normal or Ice formation is extremely thin on inlet of evaporator or No ...

Page 112: ...d or components not listed on this table before proceeding Suction pressure is High Suction pressure is Low or Normal Suction pressure is High Suction pressure is High Wait 5 minutes into the freeze cycle Compare temperatures of evaporator inlet and evaporator outlet Inlet _____________ F C Outlet ___________ F C Difference_________ F C Inlet and outlet within 7 of each other Inlet and outlet not ...

Page 113: ... the compressor dis charge line is Hot Discharge Line Temperature Record freeze cycle dis charge line temperature at the end of the freeze cycle _________ F C Discharge line temperature 160 F 71 1 C or higher at the end of the freeze cycle Discharge line temperature 160 F 71 1 C or higher at the end of the freeze cycle Discharge line Temperature less than 160 F 71 1 C at the end of the freeze cycl...

Page 114: ... 104 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 115: ...______ Right Side___________ Ice formation is extremely thin on outlet of one side of evaporator or No ice formation on one side of evaporator Ice formation is extremely thin on outlet of one or both sides of evaporator or No ice formation on entire evaporator Ice formation normal or Ice formation is extremely thin on inlet of one side of evaporator or No ice formation on entire evaporator Ice for...

Page 116: ...e proceeding Suction pressure is High Suction pressure is Low or Normal Suction pressure is High Suction pressure is High Harvest Valve Wait 5 minutes into the freeze cycle Compare temperatures of compressor discharge line and both harvest valve inlets One harvest valve inlet is Hot and approaches the temperature of a Hot compressor discharge line Both harvest valve inlets are Cool enough to hold ...

Page 117: ...ature 160 F 71 1 C or higher at the end of the freeze cycle Discharge line temperature less than 160 F 71 1 C at the end of the freeze cycle Discharge line temperature 160 F 71 1 C or higher at the end of the freeze cycle Final Analysis Enter total number of boxes checked in each column Harvest Valve Leaking Low On Charge Or TXV Starving TXV Flooding Compressor Q OR J MODEL DUAL EXPANSION VALVE Op...

Page 118: ...ng HPR System Remotes Only GENERAL The harvest pressure regulating H P R system includes Harvest pressure regulating solenoid valve H P R solenoid This is an electrically operated valve which opens when energized and closes when de energized INLET OUTLET FLOW SV3074 HPR SOLENOID ...

Page 119: ...e in the discharge line prevents refrigerant in the remote condenser and receiver from backfeeding into the evaporator and condensing to liquid The H P R solenoid is opened energized during the harvest cycle allowing refrigerant gas from the top of the receiver to flow into the H P R valve The H P R valve modulates open and closed raising the suction pressure high enough to sustain heat for the ha...

Page 120: ...rter freeze cycles Refer to headmaster diagnostics Longer freeze cycles Refer to water system checklist then refer to Refrigeration Diagnostic Procedures 4 Harvest time is longer than normal and control board indicates safety limit 2 Refer to Cycle Times Refrigerant Pressures 24 Hour Ice Production Charts Connect refrigeration manifold gauge set to the access valves on the front of the ice machine...

Page 121: ...ressure if suction pressure is high or low 7 Discharge line temperature is 160 F 71 1 C or higher at end of freeze cycle If less than 160 F 71 1 C check expansion valve bulb mounting and insulation 8 Harvest cycle suction and discharge pressures are lower than indicated in the cycle times refrigerant pressures 24 hour ice production chart Replace Harvest Pressure Regulating system HPR Valve and HP...

Page 122: ...s nitrogen charge closes the condenser port and opens the bypass port from the compressor discharge line In this modulating mode the valve maintains minimum head pressure by building up liquid in the condenser and bypassing discharge gas directly to the receiver DIAGNOSING 1 Determine the air temperature entering the remote condenser 2 Determine if the head pressure is high or low in relationship ...

Page 123: ... the condenser with cool water during the freeze cycle Symptom Probable Cause Corrective Measure Valve not maintaining pressures Non approved valve Install a Manitowoc Headmaster control valve with proper setting Discharge pressure low Liquid line entering receiver feels warm to hot Ice machine low on charge See Low on Charge Verification Discharge pressure extremely high Liquid line entering rece...

Page 124: ...chine must be evacuated and properly recharged 3 If the ice machine does not start to operate properly after adding charge replace the headmaster FAN CYCLE CONTROL VS HEADMASTER A fan cycle control cannot be used in place of a headmaster The fan cycle control is not capable of bypassing the condenser coil and keeping the liquid line temperature and pressure up This is very apparent when it rains o...

Page 125: ... not open or grounded and fan spins freely 2 Connect manifold gauges to ice machine 3 Hook voltmeter in parallel across the fan cycle control leaving wires attached 4 Refer to chart below Specifications Model Cut In Close Cut Out Open Q200 Q280 Q320 Q370 Q420 Q450 Q600 250 psig 5 1724 kPa 35 200 psig 5 1379 kPa 35 Q800 Q1000 Q1300 Q1800 275 psig 5 1896 kPa 35 225 psig 5 1551 kPa 35 FCC Setpoint Re...

Page 126: ... contained air cooled and remote models disconnect the fan motor 5 Set ICE OFF CLEAN switch to ICE 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 control if it 1 Will not reset below 300 psig 2068 kPa 2 Does not open at the specified cut out point Specificati...

Page 127: ...0 Q1300 Q1600 Q1800 HEAT EXCHANGER EVAPORATOR CONDENSER COMPRESSOR EXPANSION VALVE HARVEST VALVE AIR OR WATER DRIER STRAINER RECEIVER WATER COOLED ONLY X x x HARVEST SOLENOID VALVE AIR OR WATER COOLED CONDENSER COMPRESSOR HEAT EXCHANGE RECEIVER DRIER STRAINER EXPANSION VALVE EXPANSION VALVE EVAPORATOR HARVEST SOLENOID VALVE ...

Page 128: ...HARVEST PRESSURE REGULATING VALVE H P R SOLENOID VALVE VALVE CHECK VALVE DRIER STRAINER HEAD PRESSURE CONTROL VALVE B R C X X x x COMPRESSOR HEAT EXCHANGE DRIER B CHECK VALVE RECEIVER C R HEAD PRESSURE CONTROL VALVE H P R SOLENOID REGULATING VALVE HARVEST PRESSURE REMOTE CONDENSER CHECK VALVE VALVE VALVE RECEIVER SERVICE SOLENOID LINE LIQUID VALVE EXPANSION VALVE EVAPORATOR EXPANSION VALVE STRAINE...

Page 129: ...visual inspection water system checklist ice formation pattern safety limits comparing evaporator inlet outlet temperatures 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 gauge set before obtaining press...

Page 130: ...7 4 25 5 29 6 Air Temp Entering Condenser F C Water Temperature F C Based on average ice slab weight of 2 44 2 81 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 270 230 210 80 26 7 230 205 190 90 32 2 200 175 160 100 37 8 165 140 130 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG 1 ...

Page 131: ...e ice slab weight of 2 44 2 81 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 270 245 220 80 26 7 260 235 210 90 32 2 250 225 200 100 37 8 240 215 190 Air Temp Around Ice Machine 90 F 32 2 C Water Temperature F C Water regulating valve set to maintain 230 PSIG discharge pressure 50 10 0 70 21 1 90 32 2 Gal 24 hours 240 480 2100 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cycl...

Page 132: ... 0 21 0 Air Temp Entering Condenser F C Water Temperature F C Based on average ice slab weight of 2 44 2 81 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 290 265 250 80 26 7 270 245 230 90 32 2 250 225 210 100 37 8 220 195 180 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Suction pressure drops gradually throughout the freeze...

Page 133: ...erage ice slab weight of 2 44 2 81 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 290 260 255 80 26 7 285 255 230 90 32 2 280 250 225 100 37 8 275 245 220 Air Temp Around Ice Machine 90 F 32 2 C Water Temperature F C Water regulating valve set to maintain 230 PSIG discharge pressure 50 10 0 70 21 1 90 32 2 Gal 24 hours 250 490 3400 Air Temp AroundIce Machine F C Freeze Cycle Harvest C...

Page 134: ...2 0 25 0 25 0 28 3 Air Temp Entering Condenser F C Water Temperature F C Based on average ice slab weight of 2 94 3 31 lb 50 10 0 70 21 1 90 32 2 70 21 1 310 290 270 80 26 7 280 260 240 90 32 2 240 220 200 100 37 8 200 180 160 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG Suction pressure drops...

Page 135: ...sed on average ice slab weight of 2 94 3 31 lb 50 10 0 70 21 1 90 32 2 70 21 1 300 280 250 80 26 7 290 270 240 90 32 2 280 260 230 100 37 8 270 250 220 Air Temp Around Ice Machine 90 F 32 2 C Water Temperature F C Water regulating valve set to maintain 230 PSIG discharge pressure 50 10 0 70 21 1 90 32 2 Gal 24 hours 270 560 3200 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cycle Discharge ...

Page 136: ...1 18 4 17 3 19 7 Air Temp Entering Condenser F C Water Temperature F C Based on average ice slab weight of 2 94 3 31 lb 50 10 0 70 21 1 90 32 2 70 21 1 360 320 300 80 26 7 330 300 275 90 32 2 295 275 250 100 37 8 265 240 225 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG Suction pressure drops g...

Page 137: ...ed on average ice slab weight of 2 94 3 31 lb 50 10 0 70 21 1 90 32 2 70 21 1 360 340 310 80 26 7 350 330 300 90 32 2 340 320 290 100 37 8 330 310 280 Air Temp Around Ice Machine 90 F 32 2 C Water Temperature F C Water regulating valve set to maintain 230 PSIG discharge pressure 50 10 0 70 21 1 90 32 2 Gal 24 hours 220 490 3700 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cycle Discharge P...

Page 138: ...3 21 3 Air Temp Entering Condenser F C Water Temperature F C Based on average ice slab weight of 4 12 4 75 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 530 480 440 80 26 7 480 430 400 90 32 2 430 380 350 100 37 8 370 330 300 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG Suction p...

Page 139: ...age ice slab weight of 4 12 4 75 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 520 460 420 80 26 7 510 450 410 90 32 2 500 440 400 100 37 8 490 430 390 Air Temp Around Ice Machine 90 F 32 2 C Water Temperature F C Water regulating valve set to maintain 230 PSIG discharge pressure 50 10 0 70 21 1 90 32 2 Gal 24 hours 400 740 2400 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cy...

Page 140: ... F C Water Temperature F C Based on average ice slab weight of 4 12 4 75 lb Regular cube derate is 7 Ratings with JC0495 condenser dice or half dice cubes 50 10 0 70 21 1 90 32 2 20 28 9 to 70 21 1 490 440 400 80 26 7 480 430 390 90 32 2 470 420 380 100 37 8 440 390 350 110 43 3 400 350 310 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Dis...

Page 141: ...Air Temp Entering Condenser F C Water Temperature F C Based on average ice slab weight of 4 12 4 75 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 690 640 590 80 26 7 640 590 540 90 32 2 590 540 500 100 37 8 540 490 440 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG Suction pressure...

Page 142: ...b weight of 4 12 4 75 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 670 610 540 80 26 7 660 600 530 90 32 2 640 580 520 100 37 8 630 570 510 Air Temp Around Ice Machine 90 F 32 2 C Water Temperature F C Water regulating valve set to maintain 230 PSIG discharge pressure 50 10 0 70 21 1 90 32 2 Gal 24 hours 600 1250 6800 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cycle Discha...

Page 143: ...er Temperature F C Based on average ice slab weight of 4 12 4 75 lb Regular cube derate is 7 Ratings with JC0895 condenser dice or half dice cubes 50 10 0 70 21 1 90 32 2 20 28 9 to 70 21 1 630 570 540 80 26 7 625 565 535 90 32 2 620 560 530 100 37 8 600 540 510 110 43 3 570 510 480 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge P...

Page 144: ... 16 5 Air Temp Entering Condenser F C Water Temperature F C Based on average ice slab weight of 5 75 6 50 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 800 740 700 80 26 7 770 710 670 90 32 2 700 640 600 100 37 8 610 560 520 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG Suction pr...

Page 145: ... ice slab weight of 5 75 6 50 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 810 750 670 80 26 7 800 740 660 90 32 2 790 730 650 100 37 8 780 720 640 Air Temp Around Ice Machine 90 F 32 2 C Water Temperature F C Water regulating valve set to maintain 230 PSIG discharge pressure 50 10 0 70 21 1 90 32 2 Gal 24 hours 640 1420 6000 Air Temp Around Ice Machine F C Freeze Cycle Harvest Cycl...

Page 146: ...r F C Water Temperature F C Based on average ice slab weight of 5 75 6 50 lb Regular cube derate is 7 Ratings with JC0895 condenser dice or half dice cubes 50 10 0 70 21 1 90 32 2 20 28 9 to 70 21 1 750 685 630 80 26 7 740 675 620 90 32 2 730 665 610 100 37 8 685 620 565 110 43 3 620 555 510 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Di...

Page 147: ...2 15 2 Air Temp Entering Condenser F C Water Temperature F C Based on average ice slab weight of 7 75 8 25 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 980 920 870 80 26 7 950 880 830 90 32 2 900 830 780 100 37 8 820 760 710 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG Suction p...

Page 148: ...rage ice slab weight of 7 75 8 25 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 970 920 820 80 26 7 960 910 810 90 32 2 950 900 800 100 37 8 940 890 790 Air Temp Around Ice Machine 90 F 32 2 C Water Temperature F C Water regulating valve set to maintain 230 PSIG discharge pressure 50 10 0 70 21 1 90 32 2 Gal 24 hours 750 1500 6200 Air Temp Around Ice Machine F C Freeze Cycle Harvest ...

Page 149: ...ser F C Water Temperature F C Based on average ice slab weight of 7 75 8 25 lb Regular cube derate is 7 Ratings with JC1095 condenser dice or half dice cubes 50 10 0 70 21 1 90 32 2 20 28 9 to 70 21 1 930 870 820 80 26 7 915 860 810 90 32 2 906 850 800 100 37 8 860 800 750 110 43 3 810 750 700 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG ...

Page 150: ...3 Air Temp Entering Condenser F C Water Temperature F C Based on average ice slab weight of 10 0 11 0 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 1320 1260 1160 80 26 7 1260 1190 1100 90 32 2 1150 1110 1010 100 37 8 1040 980 890 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG Suct...

Page 151: ...slab weight of 10 0 11 0 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 1370 1280 1120 80 26 7 1360 1270 1100 90 32 2 1340 1250 1070 100 37 8 1320 1240 1050 Air Temp Around Ice Machine 90 F 32 2 C Water Temperature F C Water regulating valve set to maintain 230 PSIG discharge pressure 50 10 0 70 21 1 90 32 2 Gal 24 hours 1150 2220 7400 Air Temp Around Ice Machine F C Freeze Cycle Harv...

Page 152: ...Water Temperature F C Based on average ice slab weight of 10 0 11 0 lb Regular cube derate is 7 Ratings with JC1395 condenser dice or half dice cubes 50 10 0 70 21 1 90 32 2 20 28 9 to 70 21 1 1260 1160 1090 80 26 7 1250 1150 1140 90 32 2 1240 1140 1180 100 37 8 1170 1080 1010 110 43 3 1090 1000 940 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure...

Page 153: ... JC1395 condenser dice or half dice cubes 50 10 0 70 21 1 90 32 2 70 21 1 1650 1510 1390 80 26 7 1635 1500 1350 90 32 2 1625 1490 1300 100 37 8 1620 1450 1290 70 21 1 1650 1510 1390 Air Temp Around Ice Machine 90 F 32 2 C Water Temperature F C Water regulating valve set to maintain 240 PSIG discharge pressure 50 10 0 70 21 1 90 32 2 Gal 24 hours 1400 2235 6500 Air Temp Entering Condenser F C Freez...

Page 154: ...er Temperature F C Based on average ice slab weight of 13 0 14 12 lb Ratings with JC1895 condenser dice or half dice cubes 50 10 0 70 21 1 90 32 2 20 to 70 29 to 21 1 1600 1478 1370 90 32 2 1523 1425 1340 100 37 8 1460 1350 1290 110 43 3 1343 1250 1213 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure P...

Page 155: ...r Temp Entering Condenser F C Water Temperature F C Based on average ice slab weight of 13 0 14 12 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 1880 1720 1640 80 26 7 1780 1650 1560 90 32 2 1690 1570 1480 100 37 8 1550 1440 1350 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Pressure PSIG Discharge Pressure PSIG Suction Pressure PSIG Sucti...

Page 156: ...ab weight of 13 0 14 12 lb Regular cube derate is 7 50 10 0 70 21 1 90 32 2 70 21 1 1840 1690 1520 80 26 7 1780 1680 1520 90 32 2 1760 1670 1510 100 37 8 1750 1660 1490 Air Temp Around Ice Machine 90 F 32 2 C Water Temperature F C Water regulating valve set to maintain 240 PSIG discharge pressure 50 10 0 70 21 1 90 32 2 Gal 24 hours 2000 2670 7750 Air Temp AroundIce Machine F C Freeze Cycle Harves...

Page 157: ... Water Temperature F C Based on average ice slab weight of 13 0 14 12 lb Regular cube derate is 7 Ratings with JC1895 condenser dice or half dice cubes 50 10 0 70 21 1 90 32 2 20 28 9 to 70 21 1 1770 1650 1540 80 26 7 1735 1615 1510 90 32 2 1700 1580 1480 100 37 8 1620 1480 1400 110 43 3 1500 1380 1320 Air Temp Entering Condenser F C Freeze Cycle Harvest Cycle Discharge Pressure PSIG Suction Press...

Page 158: ...ons Make these connections Suction side of the compressor through the suction service valve Discharge side of the compressor through the discharge service valve Important Manitowoc Ice Inc assumes no responsibility for the use of contaminated refrigerant Damage resulting from the use of contaminated refrigerant is the sole responsibility of the servicing company Important Replace the liquid line d...

Page 159: ...uges 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 250 microns Then allow the pump to run for an additional half hour Turn off the pump and perform a standing vacuum leak check 5 Follow the Charging Procedures MANIFOLD SET OPEN BACKSEATED VACUUM PUMP RECOVERY UNIT CLOSED ...

Page 160: ...Important The charge is critical on all Manitowoc ice machines Use a scale or a charging cylinder to ensure the proper charge is installed MANIFOLD SET CLOSED FRONTSEATED VACUUM PUMP RECOVERY UNIT OPEN CLOSED LOW SIDE SERVICE VALVE HIGH SIDE SERVICE VALVE BACKSEATED OPEN CHARGING CONNECTIONS ...

Page 161: ...essary 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 freeze cycle B Close the high side service valve at the ice machine C Open the low side service valve at the ice machine D Open the high ...

Page 162: ... Schraeder valve on the discharge line quick connect fitting located on the outside of the compressor evaporator compartment This connection evacuates the condenser Without it the magnetic check valves would close when the Important Manitowoc Ice Inc assumes no responsibility for the use of contaminated refrigerant Damage resulting from the use of contaminated refrigerant is the sole responsibilit...

Page 163: ...rging cylinder scale and recovery unit or two stage vacuum pump 3 Open backseat the high and low side ice machine service valves 4 Open the receiver service valve halfway 5 Open high and low side on the manifold gauge set 6 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 250 ...

Page 164: ... 1 2 OPEN RECEIVER MANIFOLD SET OPEN DRIER SOLENOID LINE VALVE REGULATING PRESSURE HARVEST LIQUID BACKSEATED SERVICE VALVE CHECK VALVE TEE OPEN C B R HIGH SIDE BACKSEATED SERVICE VALVE LOW SIDE COMPRESSOR HARVEST PRESSURE SOLENOID VALVE VALVE EXPANSION VALVE CHECK STRAINER VALVES SOLENOID HARVEST HEAT EXCHANGER EVAPORATOR REMOTE RECOVERY EVACUATION CONNECTIONS ...

Page 165: ... Ensure all vapor in charging hoses is drawn into the machine then disconnect the manifold gauges NOTE Backseat the receiver outlet service valve after charging is complete and before operating the ice machine If the access valve core removal and installation tool is used on the discharge quick connect fitting reinstall the Schraeder valve core before disconnecting the access tool and hose 6 Run t...

Page 166: ...ALVE 1 2 OPEN RECEIVER MANIFOLD SET CLOSED DRIER SOLENOID LINE VALVE REGULATING PRESSURE HARVEST LIQUID BACKSEATED SERVICE VALVE CHECK VALVE TEE OPEN C B R HIGH SIDE BACKSEATED SERVICE VALVE LOW SIDE COMPRESSOR HARVEST PRESSURE SOLENOID VALVE VALVE EXPANSION VALVE CHECK STRAINER VALVES SOLENOID HARVEST HEAT EXCHANGER EVAPORATOR REMOTE CHARGING CONNECTIONS ...

Page 167: ... These devices sample refrigerant eliminating the need to take an oil sample Follow the manufacturer s directions If a refrigerant test kit indicates harmful levels of contamination or if a test kit is not available inspect the compressor oil 1 Remove the refrigerant charge from the ice machine 2 Remove the compressor from the system 3 Check the odor and appearance of the oil 4 Inspect open suctio...

Page 168: ...nation Leak in water cooled condenser No burnout deposits in open compressor lines Mild contamination cleanup procedure Mild Compressor Burnout symptoms Oil appears clean but smells acrid Refrigeration test kit or acid oil test shows harmful acid content No burnout deposits in open compressor lines Mild contamination cleanup procedure Severe Compressor Burnout symptoms Oil is discolored acidic and...

Page 169: ...ns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 5 psig 35 kPa B Pull vacuum to 500 microns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 5 psig 35 kPa C Change the vacuum pump oil D Pull vacuum to 250 microns Run the vacuum pump for 1 2 hour on self contained models 1 hour on remotes NOTE You may perform a standing vacuum t...

Page 170: ...eposits from suction and discharge lines at compressor 5 Sweep through the open system with dry nitrogen 6 Install a new compressor and new start components 7 Install a suction line filter drier with acid and moisture removal capability P N 89 3028 3 Place the filter drier as close to the compressor as possible 8 Install an access valve at the inlet of the suction line drier 9 Install a new liquid...

Page 171: ...inary leak check You should use an electronic leak detector after system charging to be sure there are no leaks 11 Charge the system with the proper refrigerant to the nameplate charge 12 Operate the ice machine for one hour Then check the pressure drop across the suction line filter drier A If the pressure drop is less than 1 psig the filter drier should be adequate for complete cleanup B If the ...

Page 172: ...essure control as feasible See the figure on next page Clamp down on the tubing until the pinch off is complete 3 Cut the tubing of the defective component with a small tubing cutter 4 Solder the replacement component in place Allow the solder joint to cool 5 Remove the pinch off tool 6 Re round the tubing Position the flattened tubing in the proper hole in the pinch off tool Tighten the wing nuts...

Page 173: ... 163 SV1406 FIG A PINCHING OFF TUBING FIG B RE ROUNDING TUBING USING PINCH OFF TOOL ...

Page 174: ... filter drier is important The refrigerant charge is critical Using an improperly sized filter drier will cause the ice machine to be improperly charged with refrigerant Listed below is the recommended OEM field replacement drier Liquid Line Driers Model Drier Size End Connection Size Part Number Self Contained Air and Water Cooled Q200 Q280 Q320 Q370 Q420 Q450 Q600 Q800 Q1000 UK 032S 1 4 in 89 30...

Page 175: ...Q320 Air Cooled 20 oz Water Cooled 16 oz Q370 Air Cooled 20 oz Water Cooled 17 oz Q420 Q450 Air Cooled 24 oz Water Cooled 22 oz Remote 6 lb Q600 Air Cooled 28 oz Water Cooled 22 oz Remote 8 lb Q800 Air Cooled 36 oz Water Cooled 25 oz Remote 8 lb Q1000 Air Cooled 38 oz Water Cooled 32 oz Remote 9 5 lb Q1300 Air Cooled 48 oz Water Cooled 44 oz Remote 12 5 lb The ice machine serial number plate overr...

Page 176: ... 100 Line Sets Maximum System Charge Never Exceed Q490 6 lb 96 oz None 6 lb 96 oz Q690 8 lb 128 oz None 8 lb 128 oz Q890 8 lb 128 oz None 8 lb 128 oz Q1090 9 5 lb 152 oz None 9 5 lb 152 oz Q1390 12 5 lb 200 oz 1 5 lb 24 oz 14 lb 224 oz Q1690 15 lb 240 oz 2 0 lb 32 oz 17 lb 272 oz Q1890 15 lb 240 oz 2 0 lb 32 oz 17 lb 272 oz ...

Page 177: ......

Page 178: ......

Page 179: ... 54221 1720 USA Phone 920 682 0161 Fax 920 683 7585 Website www manitowocice com 2003 Manitowoc Ice Inc Factory School Improve Your Service Techniques 4 1 2 Days of Intensive Training on Manitowoc Ice Machines Contact Your Distributor for Dates and Further Information ...

Reviews:

No comments

Brands by name

Popular brands

Load more brands