Manitowoc UG018A Technician'S Handbook Download

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–10

6–

UG050A-251 SELF-CONTAINED AIR-COOLED — STANDARD CUBE
NOTE:

These characteristics may vary depending on operating conditions.

Cycle Times

Freeze Time + Harvest Time = Total Cycle Time

Air Temp.

Entering

Condenser

°C

Freeze Time

Harvest Time

Times in minutes.

Water Temperature °C

13.93-14.89

1.4-3.5 min.

17.41-18.06

18.38-19.48

23.61-25.51

31.51-33.34

39.54-43.59

Summary of Contents for UG018A

Page 1: ...cian s Handbook This manual is updated as new information and models are released Visit our website for the latest manual www manitowocice com America s 1 Selling Ice Machine UG Models Manitowoc Ice P N 040004390 11 14 ...

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

Page 4: ...his handbook you will 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 Important Text in an Important box provides you with information that may help you perform a procedure more efficiently Disregarding this information will not cause damage or injury but may slow you down as you ...

Page 5: ...oc Ice Inc We will be happy to provide assistance Important Routine adjustments and 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 POTENTIAL PERSONAL INJURY SITUATION This ice machine ...

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Page 7: ... Operation 23 Cube Shape 27 Troubleshooting 29 All Models 29 Ice Machine Will Not Run 29 Compressor Won t Run 30 Compressor Electrical Diagnostics 31 Diagnosing Start Components 33 Water Pump Won t Run 34 Hot Gas Valve Won t Energize 34 Water Inlet Valve Won t Energize 34 Ice Machine Prematurely Harvests 35 ce Machine Will Not Harvest 36 Evaporator Thermostat 37 Water System Checklist 44 Ice Produ...

Page 8: ...Production and Refrigerant Pressure Charts 81 ug18A Self Contained Air Cooled Standard Cube 82 ug18A Self Contained Air Cooled Standard Cube Continued 83 ug18A Self Contained Air Cooled Standard Cube Continued 84 UG020A Self Contained Air Cooled Standard Cube 85 UG020A Self Contained Air Cooled Standard Cube Continued 86 UG020A Self Contained Air Cooled Standard Cube Continued 87 UG030A 251 Self C...

Page 9: ...d Stan dard Cube 103 UG040A 261 Self Contained Air Cooled Stan dard Cube Continued 104 UG040A 261 Self Contained Air Cooled Stan dard Cube Continued 105 UG050A 251 Self Contained Air Cooled Stan dard Cube 106 UG050A 251 Self Contained Air Cooled Stan dard Cube Continued 107 UG050A 251 Self Contained Air Cooled Stan dard Cube Continued 108 UG050W Self Contained water Cooled 109 UG050W Self Containe...

Page 10: ...117 Diagrams 119 Wiring Diagram 119 UG18 UG20 air cooled 119 UG30 UG50 UG65 air cooled 120 UG30 UG50 water cooled 122 Tubing Schematics 123 ug18 UG20 UG30 UG40 UG65 Tubing Schematic 123 UG50 UG80 Tubing Schematic 124 ...

Page 11: ... 1 General Information Model Numbers This manual covers the following models Self Contained Air Cooled Water Cooled UG018A N A UG020A N A UG030A UG030W UG040A N A UG050A UG050W UG065A N A UG080A N A ...

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Page 13: ... 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 ice machine condenser airflow is in and out the front Refer to the chart below f or clearance requirements NOTE The ice machine may be built into a cabinet There is no minimum...

Page 14: ...eck valves on sink faucets dishwashers etc If water pressure exceeds the maximum recommended pressure 5 bar 500 kPA install a water pressure regulator Install a water shut off valve Drain Connections Drain lines must have a 2 5 cm per meter drop and must not create traps The floor drain must be large enough to accommodate drainage from all drains Caution The ice machine must be protected if it wil...

Page 15: ...g is supplied Fuse Circuit Breaker A separate fuse circuit breaker must be provided for each ice machine An electrical disconnect switch must be provided if the ice machine is hard wired wired without a plug Total Circuit Ampacity The total circuit ampacity is used to help select the wire size of the electrical supply The wire size or gauge is also dependent upon location materials used length of ...

Page 16: ...mum Fuse Circuit Breaker Total Amps Maximum Fuse Circuit Breaker Total Amps UG018 230 1 50 10 2 0 N A N A UG020 230 1 50 10 2 3 N A N A 230 1 60 10 2 3 N A N A UG030 230 1 50 15 2 8 15 2 5 230 1 60 15 2 8 N A N A 115 1 60 15 5 5 N A N A UG040 230 1 50 15 3 0 N A N A 230 1 60 15 3 0 N A N A ...

Page 17: ...7 UG050 230 1 50 15 4 0 15 2 8 230 1 60 15 4 0 N A N A 115 1 60 15 6 8 N A N A UG065 230 1 50 15 4 5 N A N A 230 1 60 15 4 5 N A N A UG080 230 1 50 15 5 5 N A N A 230 1 60 15 5 5 N A N A ...

Page 18: ...of Rejection Air Conditioning Peak UG18 1 150 2 300 UG20 1 400 2 600 UG30 1 900 3 300 UG40 2 100 4 100 UG50 2 600 5 000 UG65 2 900 5 000 UG80 4 300 7 400 BTU Hour Because the heat of rejection varies during the ice making cycle the figure shown is an average ...

Page 19: ...9 Component Identification Water Curtains Water Trough Control board On Off Wash Fill Toggle Switch Air Cooled Condenser ...

Page 20: ...10 Evaporator Spray Nozzles Toggle Switch Spray Bar Ice Chute ...

Page 21: ...r easiest access to the evaporator compartment the top cover can be removed 1 Remove two screws on the rear of the ice machine 2 Slide top cover back to disengage the three pins from the front panel Remove 2 Screws and Slide Cover Back ...

Page 22: ...move top cover 2 Slide door up until rear pins align with slot in door tracks 3 Lift rear door pins out and slide door up until front door pins align with slot 4 Lift door out of door track Align Door Pins With Track Slots Then Lift Door Out Of Track ...

Page 23: ...r from escaping the evaporator compartment Removal of the bin door is not required but enhances access 1 Grasp the ice curtain and lift up 2 To re install into ice machine pivot the water curtain and pull down into position Make sure tabs are secure in grooves Water Curtain ...

Page 24: ...de the water trough or the spray nozzles will not be aligned with the spray holes and spray water will fall into bin 1 Grab protruding spray holes on one end and lift up 2 Pivot ice chute and remove 3 To re install ice chute grasp protruding spray holes and position over Spray Bar Assembly Make sure rear supports are over Spray Bar Assembly and front edge is inside of water trough Ice Chute ...

Page 25: ...ic clips on water inlet tubing by grasping both ears on clip and separating 3 Apply food grade lubricate 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 NOTE Nozzles and inserts can be removed for cleaning by unscrewing nozzles Inserts are located...

Page 26: ... is located in the evaporator water sump 1 Remove shutters and ice chute 2 Lift spray bar or disconnect and remove for easiest access 3 Pull up on over flow tube to remove To replace plug insert in hole and push with force to make a tight seal Overflow Tube ...

Page 27: ...est the water quality and recommend appropriate water treatment An extremely dirty ice machine must be taken apart for cleaning and sanitizing Caution Use only approved Ice Machine Cleaner and Sanitizer Read and understand all labels printed on bottles before use Do not mix Ice Machine Cleaner and Sanitizer solutions together Warning Wear rubber gloves and safety goggles and or face shield when ha...

Page 28: ...nents to sink and with 2 liters Cleaner Water mixture clean all components with a soft nylon brush Disassemble spray bar remove nozzles and inserts and soak for 5 minutes For heavily scaled parts soak in solution for 15 20 minutes Rinse all components with clean water Step 5 While components are soaking use nylon brush to scrub inside of ice bin Scrub inside of door door track bin sump trough and ...

Page 29: ...with 10 liters Sanitizer Water mixture sanitize all components with a soft nylon brush or cloth Do not rinse components Step 13 Use brush or cloth to sanitize the inside of ice bin Scrub inside of door door track bin water sump water distribution assembly and evaporator moldings Do not rinse Step 14 Replace sump drain over flow tube and transfer remaining 2 liters of solution to the sump trough Re...

Page 30: ...ion Remove water curtain ice chute water sump over flow tube Drain water from sump and replace tub Step 18 Replace all parts Step 19 Place toggle switch to ON position ice machine will go into ice making cycle ...

Page 31: ...he applicable procedure below 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 Drain the water from the water sump and water pump by disconnecting the water pump tubing 4 Disconnect and drain the incoming ice making water line and disconnect the tubing from the water inlet valve outlet and allow water to dra...

Page 32: ...nnect 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 4 Hold the valve open and blow compressed air through the condenser until water no longer exits ...

Page 33: ...lve solenoid is de energized the water pumpand the fan motor are energized machine goes into freeze cycle 2 Freeze Cycle The pump sprays water into the inverted cups The water freezes layer by layer until an ice cube forms in each cup When the water temperature is equal to or less than 2 for more than 5 seconds control will read the liquid line temperature and dip switch setting get the freeze pos...

Page 34: ... 4 Automatic Shut Off When the storage bin is full the ice will come in contact with the bin thermostat which is located inside the bin The machine will stop after approximately 45seconds of continuous ice contact with the bin thermostat probe The ice machine remains off until a 3 minutes delay has elapsed and enough ice has been removed from the storage bin to allow the ice to fall clear of the b...

Page 35: ...times vary according to surrounding air and water inlet temperatures 3 If cubes are not full large dimple raise the dip switch level to increase cube size Allow ice machine to complete three cycles then check cube 4 If cubes are too full no dimple lower the dip switch level to decrease cube size Allow ice machine to operate three complete cycles 5 The dip switch can be adjusted to five levels 2 1 ...

Page 36: ...26 dip switch Decrease Cube Size Factory Default Setting Increase Cube Size test button ...

Page 37: ...27 CUBE SHAPE The standard cube has an average weight of 19 Notice the normal dimple in the center of the cube ...

Page 38: ...28 ...

Page 39: ... water pump won t run compressor won t run etc 1 Place the toggle switch in the clean position If the water pump runs begin with toggle switch diagnostics If water pump does not run place toggle switch in ice position 2 Verify correct voltage is present and matches nameplate voltage 3 High pressure switch must be closed on water cooled ice machines 4 Bin thermostat must be closed before any compon...

Page 40: ...he compressor is not it may be tripping on overload or tripping the breaker fuse Check for grounded winding if breaker keeps tripping 1 Compressor Relay LED lit 2 Start capacitor and relay function 3 Compressor windings closed 4 Refer to compressor diagnostics ...

Page 41: ...he 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 continuity between ...

Page 42: ...late voltage Compressor Drawing Locked Rotor The three likely causes of this are Low voltage supply check voltage while compressor is trying to start Defective starting component 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 compres...

Page 43: ...capacitor Clip the bleed resistor off the capacitor terminals before testing Current Relay The relay has a set of contacts that energize and de energize the compressor start winding The contacts on the relay are normally open start winding de energized When power is applied the run winding will be at LRA The relay coil will become an electromagnet and close the contacts start winding energized As ...

Page 44: ...VALVE WON T ENERGIZE 1 Line voltage at hot gas valve Yes Replace hot gas valve coil No Hot gas valve Relay LED on control board lit Yes repair wiring No rebulid or replace control board WATER INLET VALVE WON T ENERGIZE 1 Line voltage at water inlet valve Yes Replace water inlet valve coil No water inlet valve Relay LED on control board lit Yes repair wiring No rebulid or replace control board ...

Page 45: ... hot gas valve No Replace hot gas valve 2 had set the dip switch Yes Refer to ice cube thickness check adjusting increase cube size increase Increased ice freeze time Refer to thermistor diagnostics test the Water Thermistor and the Liquid Line Thermistor ...

Page 46: ...ST 1 Liquid Line Thermistor temperature below setpoint 2 Liquid Line Thermistor sensor installation correctly 3 Refer to thermistor diagnostics test the Liquid Line Thermistor Line voltage at hot gas valve and water inlet Solenoid ...

Page 47: ...T2 T3 T1 Water thermistor located at the water trough T2 Liquid line thermistor sensor located at outlet of the condenser T3 Bin full thermistor sensor located at top of the bin SPECIFICATIONS TI T3 Temperatur e of Thermistor Resistance Temperatur e of Thermistor Resistance C K Ohms x 1000 K Ohms x 1000 50 344 6 26 4 771 49 320 5 27 4 567 48 298 2 28 4 375 47 277 6 29 4 190 46 258 7 30 4 016 45 24...

Page 48: ... 940 27 74 09 49 1 867 26 69 70 50 1 797 25 65 58 51 1 731 24 61 75 52 1 667 23 58 16 53 1 606 22 54 81 54 1 547 21 51 66 55 1 491 20 48 72 56 1 437 19 45 97 57 1 385 18 43 39 58 1 336 17 40 96 59 1 289 16 38 69 60 1 243 15 36 56 61 1 200 14 34 56 62 1 158 13 32 68 63 1 117 12 30 92 64 1 079 11 29 25 65 1 041 10 27 70 66 1 006 Temperatur e of Thermistor Resistance Temperatur e of Thermistor Resist...

Page 49: ... 13 33 80 0 6293 5 12 69 81 0 6094 6 12 07 82 0 5902 7 11 49 83 0 5717 8 10 94 84 0 5538 9 10 43 85 0 5367 10 9 932 86 0 5201 11 9 466 87 0 5041 12 9 025 88 0 4887 13 8 608 89 0 4739 14 8 211 90 0 4595 15 7 836 91 0 4457 16 7 480 92 0 4323 17 7 142 93 0 4194 18 6 821 94 0 4069 19 6 516 95 0 3950 20 6 228 96 0 3833 21 5 953 97 0 3722 Temperatur e of Thermistor Resistance Temperatur e of Thermistor ...

Page 50: ... 8 37 6 387 38 200 6 38 6 162 37 189 3 39 5 945 36 178 7 40 5 738 35 168 8 41 5 538 34 159 4 42 5 347 33 150 6 43 5 163 32 142 4 44 4 987 31 134 7 45 4 817 30 127 5 46 4 655 29 120 6 47 4 498 28 114 2 48 4 348 27 108 2 49 4 203 26 102 5 50 4 064 25 97 20 51 3 931 24 92 17 52 3 803 23 87 44 53 3 680 Temperatur e of Thermistor Resistance Temperatur e of Thermistor Resistance C K Ohms x 1000 K Ohms x...

Page 51: ...5 43 66 2 428 9 43 30 67 2 354 8 41 27 68 2 283 7 39 36 69 2 214 6 37 55 70 2 147 5 35 83 71 2 082 4 34 19 72 2 020 3 32 65 73 1 960 2 31 18 74 1 902 1 29 78 75 1 846 0 28 49 76 1 791 1 27 20 77 1 739 2 26 01 78 1 688 3 24 88 79 1 639 4 23 80 80 1 592 5 22 78 81 1 546 6 21 81 82 1 502 7 20 88 83 1 459 8 20 00 84 1 417 Temperatur e of Thermistor Resistance Temperatur e of Thermistor Resistance C K ...

Page 52: ...2 17 96 1 011 21 11 70 97 0 9838 22 11 24 98 0 9572 23 10 81 99 0 9316 24 10 40 100 0 9066 25 10 00 101 0 8832 26 9 622 102 0 8604 27 9 260 103 0 8384 28 8 913 104 0 8170 29 8 582 105 0 7964 30 8 265 106 0 7762 31 7 961 107 0 7564 32 7 670 108 0 7374 33 7 391 109 0 7190 34 7 124 110 0 7010 35 6 868 Temperatur e of Thermistor Resistance Temperatur e of Thermistor Resistance C K Ohms x 1000 K Ohms x...

Page 53: ...om control board and measure resistance 3 Measure temperature at the thermistor 4 Compare measured resistance temperature Creadings to resistance temperature relationship Within 10 of the published resistance value Thermistor is good Not within 10 of the published resistancevalue Thermistor is defective ...

Page 54: ...5 bar Install a water regulator valve or increase the water pressure Incoming water temperature is not between 1 7 C and 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 Hoses fittings etc are leaking water Repair replace as needed Water inlet valve is stuck open or closed Clean replace as needed Water i...

Page 55: ... 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 grams 4 Perform an ice production check using the formula below Weighing the ice is the only 100 accurate check Compare the results of Step 3 with Step 2 Ice production is normal when these numbers match closely If they match closely determine if ...

Page 56: ...le ______ Harvest Cycle ______ Perform an actual discharge pressure check 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 whe...

Page 57: ...st Restricted Condenser Air Flow High inlet air temperature Condenser discharge air re circulation Dirty condenser fins Defective fan motor Improper Refrigerant Charge Overcharged Non condensable in system Wrong type of refrigerant Other High side refrigerant lines component restricted before mid condenser ...

Page 58: ...n Refer to Installation Visual Inspection Checklist Improper Refrigerant Charge Undercharged Wrong type of refrigerant Other High side refrigerant lines component restricted before mid condenser NOTE Do not limit your diagnosis to only the items listed in the checklists ...

Page 59: ...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 60: ...suction pressure should be approximately 2 92 bar at 1 minute 2 56bar at 20 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 Beginning of Freeze cycle 5bar at 1 min Middle of Freeze cycle 4 ...

Page 61: ...scharge Pressure Discharge pressure is too high and is affecting suction pressure refer to Freeze Cycle Discharge Pressure High Checklist Improper Refrigerant Charge Overcharged Wrong type of refrigerant Non Condensable in system Other Hot gas valve leaking TXV flooding check bulb mounting Defective compressor ...

Page 62: ...Improper Refrigerant Charge Undercharged Wrong type of refrigerant Other 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 or capillary tube in suction side of refrigeration system TXV starving Moisture in refrigeration system NOTE Do not limit your diagno...

Page 63: ...ent 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 71 C on a normally operating ice machine Procedure Connect a temperature probe on the compressor discharge line...

Page 64: ... 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 and secured...

Page 65: ...itch by disconnecting all wires from the 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 Replace the toggle switch if ohm readings do not match all three switch settings Switch Setting Terminals Ohm Reading ON 5 6 Open 5 4 Closed 2 1 Closed 2 3 Open...

Page 66: ...The bin thermistor temperature setting determined by the point of T2 liquid line thermistor of when T1 sump water thermistor come down 2 C refer to the Specifications Charts below for clearance Specifications UG40 UG50 YG65 UG18 UG20 UG30 UG80 T1 C T2 C Shut down T3 Go back T3 2 0 T2 28 1 5 2 0 2 0 28 T2 56 2 0 3 5 2 0 56 T2 3 0 4 5 T1 C T2 C Shut down T3 Go back T3 2 0 T2 32 1 7 2 2 2 0 32 T2 51 ...

Page 67: ...resistance across the terminals NOTE After covering uncovering the bulb holder with ice wait at least three minutes to allow the thermostat to react Open Close Warning Disconnect electrical power to the entire ice machine before proceeding No Ice on Bulb Ice on Bulb Result Closed O Open OL Thermostat good Open OL Closed O Replace thermostat ...

Page 68: ...with the control board to determine the length of the freeze and harvest cycles Specifications The sump water thermostor R2 0 C 0 5 C 14 75Kohm 1 The liquid line thermistor R25 C 0 5 C 10Kohm 1 Check Procedure 1 Make sure the thermistor sensors installation correctly 2 Disconnect thermistor from control board and measure resistance 3 Measure temperature at the thermistor 4 Compare measured resista...

Page 69: ...Ohms x 1000 50 344 6 26 4 771 49 320 5 27 4 567 48 298 2 28 4 375 47 277 6 29 4 190 46 258 7 30 4 016 45 241 1 31 3 849 44 224 8 32 3 690 43 209 8 33 3 538 42 195 9 34 3 394 41 183 0 35 3 256 40 171 0 36 3 124 39 159 9 37 2 999 38 149 5 38 2 879 37 140 0 39 2 764 36 131 1 40 2 656 35 122 8 41 2 551 34 115 1 42 2 452 33 108 0 43 2 356 32 101 2 44 2 266 31 95 03 45 2 179 30 89 24 46 2 095 29 83 83 4...

Page 70: ... 158 13 32 68 63 1 117 12 30 92 64 1 079 11 29 25 65 1 041 10 27 70 66 1 006 9 26 24 67 0 9715 8 24 85 68 0 9386 7 23 55 69 0 9069 6 22 33 70 0 8766 5 21 18 71 0 8173 4 20 09 72 0 8192 3 19 07 73 0 7922 2 18 10 74 0 7662 1 17 19 75 0 7411 0 16 33 76 0 7170 1 15 52 77 0 6939 2 14 75 78 0 6715 3 14 02 79 0 6501 4 13 33 80 0 6293 Temperatur e of Thermistor Resistance Temperatur e of Thermistor Resist...

Page 71: ... 92 0 4323 17 7 142 93 0 4194 18 6 821 94 0 4069 19 6 516 95 0 3950 20 6 228 96 0 3833 21 5 953 97 0 3722 22 5 692 98 0 3613 23 5 444 99 0 3508 24 5 208 100 0 3407 25 4 984 Temperatur e of Thermistor Resistance Temperatur e of Thermistor Resistance C K Ohms x 1000 K Ohms x 1000 40 225 1 36 6 623 39 212 8 37 6 387 Temperatur e of Thermistor Resistance Temperatur e of Thermistor Resistance C K Ohms ...

Page 72: ...4 064 25 97 20 51 3 931 24 92 17 52 3 803 23 87 44 53 3 680 22 82 97 54 3 561 21 78 77 55 3 446 20 74 80 56 3 336 19 71 05 57 3 230 18 67 52 58 3 127 17 64 19 59 3 028 16 61 03 60 2 933 15 58 06 61 2 841 14 55 24 62 2 753 13 52 58 63 2 667 12 50 07 64 2 585 11 47 68 65 2 505 10 45 43 66 2 428 9 43 30 67 2 354 8 41 27 68 2 283 Temperatur e of Thermistor Resistance Temperatur e of Thermistor Resista...

Page 73: ... 21 81 82 1 502 7 20 88 83 1 459 8 20 00 84 1 417 9 19 16 85 1 377 10 18 36 86 1 338 11 17 60 87 1 300 12 16 88 88 1 264 13 16 19 89 1 229 14 15 53 90 1 195 15 14 90 91 1 162 16 14 30 92 1 129 17 13 73 93 1 098 18 13 19 94 1 068 19 12 67 95 1 039 20 12 17 96 1 011 21 11 70 97 0 9838 22 11 24 98 0 9572 23 10 81 99 0 9316 Temperatur e of Thermistor Resistance Temperatur e of Thermistor Resistance C ...

Page 74: ...260 103 0 8384 28 8 913 104 0 8170 29 8 582 105 0 7964 30 8 265 106 0 7762 31 7 961 107 0 7564 32 7 670 108 0 7374 33 7 391 109 0 7190 34 7 124 110 0 7010 35 6 868 Temperatur e of Thermistor Resistance Temperatur e of Thermistor Resistance C K Ohms x 1000 K Ohms x 1000 ...

Page 75: ...r condenser inlet 5 Set ON OFF WASH switch to ON 6 No water 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 Will not reset below 150 psig UG030 below 300 psig UG050 Does not open at the specified cut out point Model Cut out Cut in UG030W 300 psig 10 150 psig 10 UG...

Page 76: ...reeze cycle The hot gas valve is de energized closed preventing refrigerant flow from the receiver into the evaporator 8 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 evaporator and allows rel...

Page 77: ...AINS OPEN IN 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 Capillary tube 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 As the amount of leakage increases the length of the freeze cycle increases Ref...

Page 78: ...ature of the inlet of the hot gas valves to the temperature of the compressor discharge line Important Feeling the hot gas valve outlet or across the hot gas valve itself will not work for this comparison The hot gas valve outlet is on the suction side cool refrigerant It may be cool enough to touch even if the valve is leaking Warning The inlet of the hot gas valve and the compressor discharge li...

Page 79: ... of the hot gas valve is hot and approaches the temperature of a hot compressor discharge line This is an indication something is wrong as the hot gas valve inlet did not cool down during the freeze cycle If the compressor dome is also entirely hot the problem is not a hot gas valve leaking but rather something causing the compressor and the entire ice machine to get hot Both the inlet of the hot ...

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Page 81: ...uction service valve 2 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 drier before evacuating and recharging Use only a Manitowoc O E M liqu...

Page 82: ...rform 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 vacuum leak check NOTE Check for leaks using a halide or electronic leak detector after charging the ice machine Follow th...

Page 83: ...ifold gauges must be removed properly to ensure that no refrigerant contamination or loss occurs 8 Make sure all vapor in the charging hoses is drawn into the ice machine before disconnecting a Run the ice machine in freeze cycle b Disconnect the high side service valve at the ice machine c Open the high and low side valves on the manifold gauge set Any refrigerant in the lines will be pulled into...

Page 84: ...diagnostic tool These devices sample refrigerant eliminating the need to take an oil sample Follow the manufacturer s directions If a refrigerant test kit indicates harmful levels of contamination or if a test kit is not available inspect the compressor oil 1 Remove the refrigerant charge from the ice machine 2 Remove the compressor from the system 3 Check the odor and appearance of the oil 4 Insp...

Page 85: ...t 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 smells acrid Bu...

Page 86: ...e 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 35 bar B Pull vacuum to 500 microns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 35 bar C Change the vacuum pump oil D Pull vacuum to 500 microns Run the vacuum pump for 1 2 hour on self contained models 1 hour o...

Page 87: ...its from suction and discharge lines at compressor 4 Sweep through the open system with dry nitrogen 5 Install a new compressor and new start components 6 Install suction line filter drier in front of compressor 7 Install a new liquid line drier Important Refrigerant sweeps are not recommended as they release CFC s into the atmosphere ...

Page 88: ...stem with the proper refrigerant to the nameplate charge Operate the ice machine for one hour Then check the pressure drop across the suction line filter drier F If the pressure drop is less than 14 bar the filter drier should be adequate for complete cleanup G If the pressure drop exceeds 14 bar change the suction line filter drier and the liquid line drier Repeat until the pressure drop is accep...

Page 89: ... dirt retaining filtration with fiberglass filters on both the inlet and outlet ends This is very important because ice machines have a back flushing action that takes place during every harvest cycle A Manitowoc filter drier has a very high moisture removal capability and a good acid removal capacity Important The liquid line drier is covered as a warranty part The liquid line drier must be repla...

Page 90: ...Refrigerant Charge grams Refrigerant Type UG018AG 251G 150 R134A UG020AG 251G 178 R134A UG030AG 251G 230 R134A UG040AG 251G 260 R404A UG050AG 251G 210 R404A UG065AG 251G 360 R404A UG080AG 251G 290 R404A UG020AG 261Z 178 R134A UG030AG 261Z 178 R134A UG040AG 261Z 280 R404A UG050AG 261Z 184 R404A UG065AG 261Z 360 R404A UG080AG 261Z 290 R404A UG030WG 251G 140 R134A UG050WG 251G 210 R404A UG030AG 161Z ...

Page 91: ...pection 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 gauge set before ob...

Page 92: ...epending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 18 82 20 77 1 4 3 5 min 21 19 99 24 8 20 58 25 89 32 34 34 37 42 38 49 68 53 50 43 60 56 67 07 ...

Page 93: ... Production Continued on next page Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 19 96 21 18 06 17 93 32 13 51 38 9 19 43 7 10 Based on average ice weight of 0 29 0 32 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 16 ...

Page 94: ...le Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 10 4 87 3 66 0 64 0 07 3 19 5 55 1 05 3 41 21 8 05 5 94 1 24 0 22 3 80 6 03 2 45 3 80 32 10 20 6 67 1 32 0 57 5 38 10 89 2 86 4 08 43 13 8 6 87 1 63 0 76 6 87 14 07 3 49 5 79 ...

Page 95: ... operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Continued on next page Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 15 37 17 95 1 4 3 5 min 21 15 67 18 16 16 22 19 31 32 21 73 25 54 38 26 93 33 25 43 33 74 38 90 ...

Page 96: ...24 Hour Ice Production Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 21 37 21 21 57 21 03 32 16 89 38 14 06 43 11 32 Based on average ice weight of 0 43 0 48kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 24 ...

Page 97: ...le Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 10 5 06 4 46 0 70 0 0 17 4 39 7 59 1 47 4 10 21 6 77 6 34 0 84 0 22 4 99 8 02 1 54 4 20 32 9 92 9 00 0 92 0 27 5 17 9 49 2 35 5 06 43 15 06 12 85 1 06 0 40 7 62 12 18 3 09 6 69 ...

Page 98: ... depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 16 41 19 84 1 4 3 5 min 21 17 53 18 96 18 21 20 45 32 22 38 25 01 38 26 42 35 23 43 37 26 41 66 ...

Page 99: ...oduction Continued on next page Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 28 37 21 30 96 29 81 32 25 48 38 20 66 43 16 11 Based on average ice weight of 0 43 0 48kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 24 ...

Page 100: ... Cycle Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 10 4 21 3 20 0 50 0 7 00 8 88 1 16 4 16 21 7 98 6 61 0 54 0 7 50 9 30 1 58 4 38 32 11 40 8 91 0 62 0 37 7 78 11 48 1 99 5 40 43 15 48 13 21 1 46 0 71 10 43 12 59 3 15 6 10 ...

Page 101: ...ay vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 16 53 20 72 1 4 3 5 min 21 16 15 17 46 32 21 35 21 88 38 25 24 26 65 43 26 84 30 3 ...

Page 102: ... Production Continued on next page Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 29 06 21 33 41 32 29 34 38 25 06 43 22 79 Based on average ice weight of 0 43 0 48kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 24 ...

Page 103: ...ycle Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 10 5 11 4 37 0 32 0 4 74 10 91 1 10 2 01 21 7 78 5 61 0 64 0 20 5 50 11 30 1 28 2 38 32 10 40 7 51 0 88 0 24 7 08 13 98 1 79 3 20 43 14 92 13 89 1 35 0 655 9 73 17 59 2 35 4 10 ...

Page 104: ...ay vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 19 84 23 72 1 8 3 6min 21 19 23 19 99 32 25 16 27 24 38 34 36 37 02 43 43 06 47 49 ...

Page 105: ... Production Continued on next page Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 25 31 21 29 5 22 98 32 38 17 66 43 14 52 Based on average ice weight of 0 43 0 48kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 24 ...

Page 106: ...ycle Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 10 5 11 3 20 0 55 0 22 5 00 9 88 1 10 2 96 21 7 88 5 81 0 58 0 39 5 50 9 30 1 38 2 98 32 9 90 6 91 2 30 0 82 6 78 12 48 2 99 3 20 43 14 18 10 21 2 47 0 89 8 53 17 59 3 00 3 40 ...

Page 107: ... depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 18 07 19 54 1 4 3 5 min 21 19 67 20 92 20 82 21 77 32 24 5 25 57 38 26 39 29 02 43 27 58 29 77 ...

Page 108: ...our Ice Production Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 30 17 21 29 27 28 07 32 23 79 38 22 34 43 21 01 Based on average ice weight of 0 43 0 48kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 24 ...

Page 109: ...eeze Cycle Harvest Cycle Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 10 7 31 9 50 3 97 6 77 2 27 4 82 21 7 46 9 60 4 10 7 04 2 46 5 04 32 8 53 9 75 4 50 8 28 2 65 3 47 43 9 85 10 80 4 95 11 34 2 58 6 05 ...

Page 110: ...y depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 17 5 21 73 1 4 3 5 min 21 19 53 22 26 21 17 23 92 32 24 36 28 92 38 31 18 35 52 43 36 99 44 89 ...

Page 111: ...Ice Production Continued on next page Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 43 52 21 46 5 44 39 32 39 28 38 31 08 43 24 90 Based on average ice weight of 0 72 0 80kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 40 ...

Page 112: ...le Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 10 9 24 6 98 2 15 1 20 7 35 13 63 5 38 5 88 21 14 21 8 98 2 22 1 80 7 40 13 64 5 38 5 88 32 19 13 17 53 2 92 2 20 8 34 18 36 6 33 6 57 43 25 16 22 01 3 82 2 60 8 80 23 30 6 60 7 25 ...

Page 113: ...ay vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 21 76 24 29 1 6 4 0min 21 20 16 22 36 32 23 64 26 88 38 30 82 34 61 43 39 08 41 89 ...

Page 114: ...ur Ice Production Continued on next page Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 39 36 21 43 78 32 40 71 38 34 12 43 29 9 Based on average ice weight of 0 72 0 80kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 40 ...

Page 115: ... Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 10 11 24 9 18 1 95 1 40 7 35 10 63 5 38 5 88 21 14 91 12 68 2 42 1 53 8 40 11 84 5 38 8 88 32 19 93 17 33 2 92 2 10 8 74 14 36 6 33 10 87 43 25 66 22 01 3 82 2 70 9 80 15 90 7 60 12 25 ...

Page 116: ...y depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 13 93 14 89 1 4 3 5 min 21 17 41 18 06 18 38 19 48 32 23 61 25 51 38 31 51 33 34 43 39 54 43 59 ...

Page 117: ...ed 24 Hour Ice Production Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 61 94 21 56 16 53 90 32 43 22 38 34 55 43 28 38 Based on average ice weight of 0 72 0 80kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 40 ...

Page 118: ...Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 10 12 00 10 60 3 51 1 37 7 22 8 22 4 78 6 34 21 15 62 12 69 3 90 1 42 8 64 10 16 6 32 7 93 32 20 24 18 37 4 75 1 67 11 53 12 70 7 60 10 13 43 25 50 23 00 4 84 1 65 12 25 14 20 9 00 11 56 ...

Page 119: ...ting conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Continued on next page Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 16 32 18 56 1 4 3 5 min 21 16 71 19 11 17 37 19 78 32 20 54 21 62 38 23 49 23 92 43 23 05 24 58 ...

Page 120: ... Ice Production Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 52 51 21 51 17 50 44 32 46 38 41 6 43 40 Based on average ice weight of 0 72 0 80kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 40 ...

Page 121: ...Pressure Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 10 13 33 9 09 3 44 2 04 6 40 7 83 4 75 6 41 21 13 39 12 45 3 60 1 35 6 75 10 55 5 10 6 30 32 15 96 15 95 4 40 1 34 8 43 12 43 6 20 6 20 43 17 18 16 40 5 00 1 75 8 57 17 62 6 81 6 63 ...

Page 122: ...vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 18 8 21 62 1 4 3 5 min 21 18 44 19 86 19 89 21 6 32 23 24 89 38 28 52 31 89 43 35 37 37 81 ...

Page 123: ... Production Continued on next page Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 62 13 21 66 90 64 85 32 59 09 38 48 69 43 39 21 Based on average ice weight of1 01 1 12kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 56 ...

Page 124: ...ressure Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle peak fan motor shut down 10 8 68 20 50 11 23 14 60 6 37 8 40 21 13 50 12 66 1 88 1 40 11 25 14 65 6 40 8 51 32 19 04 17 06 2 43 1 85 11 33 16 65 6 53 10 02 43 25 01 22 24 3 15 2 65 13 34 19 87 8 02 12 20 ...

Page 125: ...depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Entering Condenser C Freeze Time Harvest Time Times in minutes Water Temperature C 10 15 21 32 10 12 96 13 12 1 4 3 5 min 21 13 84 16 38 14 58 17 02 32 21 82 23 33 38 25 40 28 52 43 29 52 33 51 ...

Page 126: ...e Production Continued on next page Air Temp Entering Condenser C Water Temperature C 10 15 21 32 10 88 68 21 85 75 84 78 32 66 76 38 55 64 43 47 87 Based on average ice weight of1 01 1 12kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 56 ...

Page 127: ...e Suction Pressure Discharge Pressure Suction Pressure All pressures are in bar Suction pressure drops gradually throughout the freeze cycle peak fan motor shut down 10 13 42 28 07 4 75 3 50 12 60 13 90 8 70 10 40 21 16 60 13 85 4 91 3 50 12 65 13 90 8 70 10 45 32 21 00 17 90 5 38 3 70 12 80 14 01 8 75 10 47 43 25 83 24 30 25 20 4 20 14 25 15 82 9 85 11 74 ...

Page 128: ... 118 This Page Intentionally Left Blank ...

Page 129: ...L2 N 23 BLU 24 BLU RELAY COMPRESSOR 22 BLU 21 BLU 19 BRN UG18 20 MACHINES WIRING DIAGRAM SELF CONTAINED 1 PHASE CAUTION DISCONNECT POWER BEFORE WORKING ON ELECTRICAL CIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE SEE SERIAL PLATE FOR VOLTAGE OVERLOAD PROTECTOR COMPRESSOR START CAPACITOR START RELAY BIN FULL LIQUID LINE MODEL WATER LEVEL MODE SWITCH CLEAN ON OFF 13 BLU 20 BLU ...

Page 130: ...4 BLU RELAY COMPRESSOR 22 BLU 21 BLU 20 BLU 13 BLU 19 BRN UG30 40 50 65 SERIES MACHINES WIRING DIAGRAM SELF CONTAINED 1 PHASE CAUTION DISCONNECTPOWERBEFOREWORKING ONELECTRICALCIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE SEE SERIAL PLATE FOR VOLTAGE OVERLOAD PROTECTOR COMPRESSOR START CAPACITOR START RELAY BIN FULL LIQUID LINE MODEL WATER LEVEL MODE SWITCH CLEAN ON OFF ...

Page 131: ... BLU 20 BLU 13 BLU 19 BRN UG80 MACHINES WIRING DIAGRAM SELF CONTAINED 1 PHASE CAUTION DISCONNECTPOWERBEFOREWORKING ONELECTRICALCIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE SEE SERIAL PLATE FOR VOLTAGE BIN FULL LIQUID LINE MODEL WATER LEVEL MODE SWITCH CLEAN ON OFF 21 BLU 1 2 5 4 COMPRESSOR R C S START CAPACITOR POTENTIAL RELAY OVERLOAD INTERNAL 230V 50 60 HZ 51 BLU 50 RED ...

Page 132: ... 21 BLU 13 BLU 19 BRN UG30 50W SERIES MACHINES WIRING DIAGRAM SELF CONTAINED 1 PHASE CAUTION DISCONNECTPOWERBEFOREWORKING ONELECTRICALCIRCUITRY DIAGRAM SHOWN DURING FREEZE CYCLE SEE SERIAL PLATE FOR VOLTAGE OVERLOAD PROTECTOR COMPRESSOR START CAPACITOR START RELAY BIN FULL QUID LINE MODEL ATER LEVEL MODE SWITCH CLEAN ON OFF 26 BRN H P CUTOUT WATER COOLED ONLY ...

Page 133: ...40 UG65 TUBING SCHE MATIC 1 Compressor 2 Hot Gas Valve 3 Condenser Air or Water Cooled 4 Receiver Water Cooled Only 5 Liquid Line Drier 6 Suction Accumulator with Heat Exchanger 7 Heat Exchanger 8 Capillary Tube 9 Evaporator 7 8 6 5 1 4 3 9 2 ...

Page 134: ...0 UG80 TUBING SCHEMATIC 1 Compressor 2 Hot Gas Valve 3 Condenser Air or Water Cooled 4 Receiver Water Cooled Only 5 Liquid Line Drier 6 Heat Exchanger 7 Thermostatic Expansion Valve 8 Evaporator 7 8 6 5 1 4 3 2 ...

Page 135: ... 125 ...

Page 136: ... 126 Manitowoc China Foodservice Co Ltd No 151 Jianye Road Binjiang District Hangzhou China 310011 Website www manitowocice com 2014 Manitowoc Ice ...

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