Home

ManitowocIce.com

1. Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Freeze Time Entering Water Temperature C Harvest Condenser Time C 10 15 20 25 30 35 40 10 15 1 17 2 15 16 7 18 9 18 0 20 3 20 18 1 20 5 19 5 22 0 21 1 23 8 22 9 25 8 25 5 28 6 25 19 7 22 2 22 4 25 2 23 1 26 0 25 3 28 4 27 8 31 3 3 0 min 30 21 5 24 2 23 4 26 3 25 6 28 8 28 2 31 6 31 2 35 0 35 0 39 2 39 7 44 4 35 28 5 31 9 31 6 35 5 35 5 39 7 40 3 45 1 46 3 51 7 40 41 0 45 8 47 2 52 7 55 6 62 1 45 48 1 53 7 56 8 63 4 69 2 77 1 Times in minutes LGI EC80 SELF CONTAINED AIR COOLED STANDARD CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 78 1 15 71 9 67 8 20 67 3 63 2 59 1 55 1 50 2 25 62 7 56 2 54 6 50 5 46 4 30 58 2 54 1 50 0 45 9 41 9 37 8 33 7 35 45 5 41 4 37 3 33 2 29 2 40 32 7 28 7 24 6 45 28 2 24 1 20 0 Based on average ice weight of 1 01 1 12 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 56 Continued on next page 4 EC80 SELF CONTAINED AIR COOLED STANDARD CUBE Continued Operating Pressures Air Temp Entering Freeze Cycle Harvest Cycle Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 13 79 9 65 3 45 1 52 6 89 8 27
2. Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 59 15 54 51 20 50 47 44 41 38 25 47 41 41 38 35 30 43 40 37 34 31 28 25 35 34 31 28 25 21 40 24 21 18 45 20 17 14 Based on average ice weight of 1 01 1 12 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 56 Continued on next page 0bl EC65 SELF CONTAINED AIR COOLED STANDARD CUBE Continued Operating Pressures Air Temp Entering Condenser C Freeze Cycle Harvest Cycle Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 12 06 9 65 4 13 1 80 6 21 8 27 4 83 5 87 20 16 20 12 41 4 83 1 93 7 58 10 69 5 52 8 62 25 17 58 14 48 4 83 2 07 7 92 11 72 6 89 9 31 32 20 68 17 24 5 17 2 21 8 27 13 79 7 93 10 34 43 26 20 22 06 5 52 2 48 8 96 14 82 8 96 12 07 pressures are in bar Suction pressure drops gradually throughout the freeze cycle Lpl EC65 SELF CONTAINED AIR COOLED LARGE CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Freeze Time Entering Water Temperature Harvest Condenser Time C 10 15 20 25 30 35 40 10 28 1 30 0 15 32 3 34 4 34 1 36 4 20 35 5 37 9 37 0 39 4 39 4 42 0 41 2 43 9 45 3 48 2 25 39 4 42 0 46 4 49 4
3. 10 9 31 4 48 2 76 14 2 76 4 83 1 38 2 76 20 14 48 6 21 3 31 14 4 14 7 58 1 72 4 48 25 14 48 7 58 3 45 14 4 82 8 27 2 07 4 82 32 17 23 8 96 3 79 14 6 21 9 65 2 76 5 87 43 24 13 12 07 4 27 21 7 93 12 76 3 45 7 93 pressures in bar Suction pressure drops gradually throughout the freeze cycle 6 50 SELF CONTAINED AIR COOLED LARGE CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Freeze Time Entering Water Temperature C Harvest Condenser Time C 10 15 20 25 30 35 40 10 24 8 26 7 15 26 8 28 7 27 8 29 8 20 29 0 31 1 30 2 32 4 31 5 33 8 32 2 34 5 33 7 36 1 25 31 5 33 8 32 9 35 3 33 7 36 1 35 3 37 8 37 1 39 7 2 5 min 30 34 5 36 9 36 2 38 7 37 1 39 7 39 0 41 8 41 1 44 0 43 5 46 5 46 1 49 3 35 41 1 44 0 43 5 46 5 46 1 49 3 49 0 52 4 52 3 55 9 40 52 3 55 9 56 0 59 9 60 3 64 4 45 60 3 64 4 65 2 69 6 70 9 75 7 Times in minutes Continued on next page 06 50 SELF CONTAINED AIR COOLED LARGE CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 63 15 59 57 20 55 53 51 50 48 25 51 49 48 46 44 30 47 45 44 42 40 38 36 35 40 38 36 34 32 40 32 30 28 45 28 26 24 Based on average ice weight of 1 24
4. Cycle Breaker Cycle Breaker 115 60 1 NA NA EC18 230 50 1 10 amp 2 2 NA NA 230 60 1 10 amp 2 2 NA NA v 115 60 1 115 60 1 NA EC20 230 50 1 10 amp 2 5 230 50 1 10 amp 2 3 3 230 60 1 10 amp 2 5 230 60 1 10 amp 2 3 8 115 60 1 115 60 1 230 50 1 10 3 4 230 50 1 10 3 2 3 230 60 1 10 3 4 230 60 1 10 3 2 230 50 1 10 3 4 230 50 1 10 3 1 o 40 230 60 1 10 amp 3 4 230 60 1 10 amp 3 1 01 01 6Zv 1 08 Jequnw Hed 115 60 1 115 60 1 50 230 50 1 10 4 0 230 50 1 10 amp 3 7 230 60 1 10 4 0 230 60 1 10 amp 3 7 115 60 1 115 60 1 65 230 50 1 10 4 2 230 50 1 10 amp 3 8 230 60 1 10 amp 4 2 230 60 1 10 amp 3 8 115 60 1 115 60 1 EC80 230 50 1 10 amp 4 4 230 50 1 10 amp 4 0 230 60 1 10 amp 4 4 230 60 1 10 amp 4 0 POWER CONSUMPTION KWH PER 24 HOURS Air Temp Water Temp Model 25 15 32 21 43 32 ECS18A 6 4 6 5 6 8 ECS20A 7 1 7 4 7 8 ECG20A 9 2 9 8 10 5 ECS20W 6 2 6 3 6 4 ECG20W 6 0 6 0 6 2 ECS30A 10 0 10 4 11 1 ECG30A 7 1 7 4 7 8 ECS30W 8 9 8 9 9 2 ECG30W 8 9 8 9 8 9 ECS40A 11 1 11 6 12 3 ECG40A 11 0 11 5 12 2 ECS40W 9 5 9 4 9 2 ECG40W 9 2 9 4 9 2 8 Part Number 80 1479 3 10 10 POWER CONSUMPTION KWH PER 24 HOURS Air Temp Water Temp Model 25 15 32 21 43 32 ECS50A 12 9 13 3 14 4 EC
5. 48 Ice Machine Prematurely Harvests 49 Ice Machine Will Not Harvest 50 Water System Checklist 51 Production 52 Analyzing Discharge Pressure 53 Discharge Pressure High Checklist 54 Freeze Cycle Discharge Pressure Low Checklist 55 Analyzing Suction Pressure 56 Suction Pressure High Checklist 58 Suction Pressure Low Checklist 59 Discharge Line Temperature Analysis 60 Component Check Procedures On Off Wash Fill Toggle Switch 63 Bin 64 Evaporator Thermostat 65 Mechanical 67 Low Ambient Adjustment For Mechanical Timer 69 SIG RE TImer zz nid 70 Low Ambient Adjustment For SCR Timer 71 High Pressure Cutout HPCO Control 72 Hot Gas 73 77 Recover Evacuation Charging 77 System Contamination Cleanup 80 Mild System Contamination Cleanup 82 Severe System Contamination Cleanup Procedure 83 85 Total System Refrigeration Charge 86 Cycle Times 24 Hour Ice Production and Refrigerant Pressure Charts EC18 Self Contained Ai
6. 826 1316 9060 Water regulating valve set to maintain 15 9 bar discharge pressure Operating Pressures Water Temperature Freeze Cycle Harvest Cycle Entering Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 15 86 15 51 3 79 1 79 8 27 9 65 5 52 6 21 20 15 86 15 51 4 48 1 79 8 96 11 38 6 21 8 27 25 15 86 15 51 4 48 1 79 8 96 11 38 6 21 8 27 32 15 86 15 51 4 48 1 79 8 96 11 38 6 55 8 62 43 17 24 16 20 4 83 1 93 9 65 12 07 7 24 9 65 Set water regulating valve to 15 9 bar 5 minutes into freeze cycle All pressures are in bar Suction pressure drops gradually throughout the freeze cycle This Page Intentionally Left Blank 162 Diagrams Wiring Diagram MECHANICAL TIMER MODELS L1 L2 N WATER COOLED DNLY oj HP CUTOUT 82 12 FAN MOTOR AIR COOLED ONLY WATER INLET EVAP THERMOSTAT SOLENOID 163 SCR MODELS e H P Cutout D Water Cooled Only 82 Bin Thermostat 1 12 Air Cooled Only Water Pump 6 8 9 Wire Number Designation Number Is Marked At Each End Of Wire Female Male Connector 164 NO MODELS L2 N 21 GROUND START COMPRESSOR CAPACITOR 15 H P
7. Accurate collection of data is essential to obtain the correct diagnosis Refer to OPERATIONAL ANALYSIS CHART for the list of data that must be collected for refrigeration diagnostics This list includes before beginning service ice production check installation visual inspection water system checklist ice formation pattern safety limits comparing evaporator inlet outlet temperatures hot gas valve analysis discharge and suction pressure analysis e 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 e Zero out manifold gauge set before obtaining pressure readings to avoid misdiagnosis e Discharge and suction pressure are highest at the beginning of the cycle Suction pressure will drop throughout the cycle Verify the pressures are within the range indicated 89 06 18 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 Freeze Time Entering Water Temperature C Harvest Condenser Time C 10 15 20 25 30 35 40 10 19 1 21 4 15 19 7 22 1 19 8 22 2 20 21 2 23 8 21 4 23 9 21 5 24 1 21 7 24 3 21 4 23 9 25 22 8 25 5 24 0 26 8 23 3 26 0 23 4 26 2 23 6 26 4 3 5 min 30 24 7 27 6 24 9 27 8 25 1 28 1 25 3 28 3 25
8. CUTOUT 13 WATER COOLED ONLY 15 TO RELAY 14 FAN MOTOR AIR COOLED ONLY 2 BIN THERMOSTAT I TOGGLE SWITCH 9571 HOT GAS SOLENOID 1 EVAP THERMOSTAT WATER INLET SOLENOID 165 Tubing Schematics EC18 EC20 EC30 EC40 TUBING SCHEMATIC O R WD Compressor Hot Gas Valve Condenser Air or Water Cooled Receiver Water Cooled Only Liquid Line Drier Suction Accumulator with Heat Exchanger Heat Exchanger Capillary Tube Evaporator 166 EC50 EC65 EC80 TUBING SCHEMATIC Z D n Compressor Hot Gas Valve Condenser Air or Water Cooled Receiver Water Cooled Only Liquid Line Drier Heat Exchanger Thermostatic Expansion Valve AN Oa FWD Evaporator 167 168 2110 South 26th Street Box 1720 Manitowoc WI 54221 1720 USA Phone 920 682 0161 Fax 920 683 7585 Website www manitowocice com 2010 Manitowoc Ice
9. EC80 SELF CONTAINED WATER COOLED LARGE CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Around Freeze Time Ice Machine Water Temperature C Harvest Time 10 15 20 25 30 35 40 10 14 5 16 4 15 15 1 17 2 15 9 18 0 20 15 4 17 4 16 4 18 6 17 3 19 5 18 5 20 9 20 3 22 9 25 15 6 17 7 17 6 19 9 17 9 20 2 18 9 21 3 20 3 22 9 wie 30 15 9 18 0 17 0 19 2 18 2 20 6 19 6 22 1 20 7 23 4 22 5 25 3 24 5 27 5 35 18 5 20 9 20 0 22 5 21 6 24 3 22 9 25 8 25 0 28 1 40 22 0 24 8 23 9 26 9 25 6 28 8 45 24 5 27 5 24 5 27 5 26 8 30 1 Times in minutes Continued on next page 09 EC80 SELF CONTAINED WATER COOLED LARGE CUBE Continued 24 Hour Ice Production Air Temp Around Ice Water Temperature C Machine C 10 15 20 25 30 35 40 10 81 15 78 75 20 77 73 70 66 61 25 76 69 68 65 61 30 75 71 67 63 60 56 52 35 66 62 58 55 51 40 57 53 50 45 56 52 48 Based on average ice weight of 1 49 1 58 kg per cycle Individual cube weight 32 grams 1 Number of individual cubes per cycle 48 9 EC80 SELF CONTAINED WATER COOLED LARGE CUBE Continued Condenser Water Consumption 32 Air Temperature Around Ice Machine Water Temperature C 15 21 32 Gal 24 Hours
10. Evaporator thermostat C amp L contacts closed wires 3 amp 5 3 Water pump winding closed TOGGLE SWITCH EVAP THERMOSTAT 36 Part Number 80 1479 3 10 10 HOT GAS VALVE WON T ENERGIZE No Timer Models 1 2 Verify the evaporator temperature is below setpoint then refer to evaporator thermostat check procedure to verify the evaporator thermostat is operating correctly Line voltage at hot gas valve Wires 6 amp 7 e Yes Replace hot gas valve coil No Refer to evaporator thermostat diagnostics 3 HOT GAS Ci EVAP THERMOSTAT SOLENOID WATER INLET SOLENOID Part Number 80 1479 3 10 10 37 WATER VALVE WON T ENERGIZE No Timer 1 Line voltage at water inlet valve Wires 21 amp 22 e Yes Replace water inlet valve coil No Refer to evaporator thermostat diagnostics 3 HOT GAS C EVAP THERMOSTAT SOLENOID WATER INLET SOLENOID 38 Part Number 80 1479 3 10 10 ICE MACHINE PREMATURELY HARVESTS No Timer 1 Line voltage at hot gas valve Yes Replace hot gas valve No Refer to evaporator thermostat diagnostics a HOT GAS C EVAP THERMOSTAT SOLENOID WATER INLET SOLENOID Part Number 80 1479 3 10 10 39 ICE MACHINE WILL HARVEST No Timer 1 2 40 Evaporator temperature below setpoint Evaporator thermostat cap tube inserted correctly Flush with end of bulb well Evaporator thermostat closed wires 4 amp tim
11. Service valve 2 Discharge side of the compressor through the discharge service valve 77 Self Contained Recovery Evacuation Place the toggle switch in the OFF position Install manifold gauges with low loss fittings scale and recovery unit or two stage vacuum pump Open backseat the high and low side on manifold gauges Perform recovery or evacuation A Recovery Operate the recovery unit as directed by the manufacturer s instructions B Evacuation prior to recharging Pull the system down to 500 microns Then allow the pump to run for an additional half hour Turn off the pump and perform a standing vacuum leak check NOTE Check for leaks using a halide or electronic leak detector after charging the ice machine Follow the Charging Procedures on the next page 78 Charging Procedures Important The charge is critical on all Manitowoc ice machines Use a scale to ensure the proper charge is installed 1 Be sure the toggle switch is in the OFF position 2 Close the vacuum pump valve and the low side manifold gauge valve 3 Open the high side manifold gauge valve 4 Open the refrigerant cylinder and add the proper refrigerant charge shown on nameplate through the discharge service valve 5 Let the system settle for 2 to 3 minutes 6 Place the toggle switch in the ICE position 7 Close the high side on the manifold gauge set Add any remaining vapor charge through the
12. 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 all three terminals and the compressor shell or copper refrigeration line Scrape metal surface to get good contact If continuity is present the compressor windings are grounded and the compressor should be replaced To determine if the Compressor is seized check the amp draw while the compressor is trying to start Part Number 80 1479 3 10 10 33 Compressor Drawing High Amps The continuous amperage draw on start up should not be near the maximum fuse size indicated on the serial tag The wiring must be correctly sized to minimize voltage drop at compressor start up The voltage when the compressor is trying to start must be within 696 of the nameplate 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 e Mechanically seized compressor To determine which you have e Install high and low side gauges e Try to start the compressor e Watch the pressures closely If the pressures do not move the compressor
13. 1 32 kg per cycle Individual cube weight 32 grams 1 Number of individual cubes per cycle 40 Le EC50 SELF CONTAINED AIR COOLED LARGE CUBE Continued Operating Pressures Air Temp Entering Condenser C Freeze Cycle Harvest Cycle Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 9 31 4 48 2 76 14 2 76 4 83 1 38 2 76 20 14 48 6 21 3 31 14 4 14 7 58 1 72 4 48 25 14 48 7 58 3 45 14 4 82 8 27 2 07 4 82 32 17 23 8 96 3 79 14 6 21 9 65 2 76 5 87 43 24 13 12 07 4 27 21 7 93 12 76 3 45 7 93 All pressures are in bar Suction pressure drops gradually throughout the freeze cycle e 1 EC50 SELF CONTAINED WATER COOLED STANDARD CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Around Freeze Time Ice Machine Water Temperature C Harvest Time 10 15 20 25 30 35 40 10 19 5 22 1 15 20 1 22 7 20 6 23 3 20 20 6 23 3 21 2 23 9 21 8 24 6 22 4 25 3 23 8 26 8 25 21 2 23 9 22 4 25 3 22 4 25 3 23 1 26 0 23 8 26 8 2 5 min 30 21 8 24 6 22 4 25 3 23 1 26 0 23 8 26 8 24 5 27 6 25 3 28 5 26 1 29 4 35 23 8 26 8 24 5 27 6 25 3 28 5 26 1 29 4 27 0 30 4 40 26 1 29 4 27 0 30 4 27 9 31 4 45 27 9 31 4 28 9 32 5 29 9 33 7 Times in minutes 1 EC50 SELF CONTAINED WATER
14. 16 16 15 10 13 12 11 45 10 9 8 Based on average ice weight of 0 74 0 79 kg per cycle Individual cube weight 32 grams 1 Number of individual cubes per cycle 24 EC30 SERIAL BREAK NOT AVAILABLE SELF CONTAINED AIR COOLED LARGE CUBE Continued Operating Pressures Air Temp Entering Freeze Cycle Harvest Cycle Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 8 96 6 89 1 72 0 2 76 5 51 1 72 4 14 20 11 03 7 93 2 07 0 2 76 6 89 2 76 5 51 43 8 27 12 41 2 07 0 69 3 10 7 58 3 10 7 58 pressures in bar Suction pressure drops gradually throughout the freeze cycle 40 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 Freeze Time Entering Water Temperature C Harvest Condenser Time C 10 15 20 25 30 35 40 10 21 8 24 6 15 23 1 26 0 24 5 27 6 20 25 3 28 5 27 0 30 4 27 9 31 4 29 9 33 7 34 9 39 2 25 27 9 31 4 29 9 33 7 31 1 34 9 33 5 37 6 36 4 40 8 3 5 min 30 31 1 34 9 33 5 37 6 36 4 40 8 38 0 42 6 41 6 46 6 43 6 48 9 48 3 54 1 35 41 6 46 6 43 6 48 9 48 3 54 1 54 1 60 5 57 5 64 3 40 57 5 64 3 65 6 73 3 70 6 78 8 45 70 6 78 8 82 9 92 5 90 8 101 2 Times in minutes GLI 40 SELF CONTAINED AIR COOLED
15. 2 76 3 45 1 72 2 76 20 11 38 6 89 1 72 0 34 3 45 5 51 2 76 4 14 43 20 68 13 79 2 76 0 69 4 14 9 30 4 14 6 89 pressures are in bar Suction pressure drops gradually throughout the freeze cycle 66 96 EC20 WITH SELF CONTAINED AIR COOLED LARGE CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Freeze Time Entering Water Temperature C Harvest Condenser Time C 10 15 20 25 30 35 40 10 24 5 26 4 15 28 8 31 0 29 8 32 1 20 32 0 34 4 33 2 35 7 34 6 37 1 36 0 38 6 37 5 40 3 25 37 5 40 3 44 9 48 2 39 1 42 0 40 9 43 9 42 8 46 0 3 5 min 30 42 8 46 0 44 9 48 2 47 2 50 7 47 2 50 7 49 8 53 4 52 6 56 4 55 7 59 7 35 55 7 59 7 59 2 63 4 63 1 67 6 63 1 67 6 67 5 72 3 40 78 5 84 0 85 3 91 3 93 4 99 9 45 103 1 110 3 114 9 122 9 129 7 138 0 Times minutes 6 EC20 WITH SELF CONTAINED AIR COOLED LARGE CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 38 15 33 32 20 30 29 28 27 26 25 26 22 25 24 23 30 23 22 21 21 20 19 18 35 18 17 16 16 15 13 12 11 45 10 9 8 Based on average ice weight of 0 74 0 79 kg per cycle Individual cube weight 32 grams 1 Number of individual cubes per cycle 24 Continue
16. 30 26 0 29 4 27 5 31 1 30 9 34 9 32 9 37 2 35 2 39 7 37 8 42 6 44 1 49 7 35 35 2 39 7 37 8 42 6 44 1 49 7 48 1 54 1 52 8 59 3 40 52 8 59 3 58 4 65 6 65 3 73 3 45 65 3 73 3 85 0 95 2 99 7 111 7 Times in minutes 60 EC30 SELF CONTAINED AIR COOLED STANDARD CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 31 15 28 27 20 26 25 23 22 21 25 23 22 21 20 18 30 21 20 18 17 16 15 13 35 16 15 13 12 11 40 11 10 45 9 7 6 Based on average ice weight of 0 43 0 48 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 24 Continued on next page 0 SELF CONTAINED AIR COOLED STANDARD CUBE Continued Operating Pressures Air Temp Entering Freeze Cycle Harvest Cycle Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 9 65 5 17 1 38 0 2 16 4 48 1 72 8 10 20 15 86 7 58 2 07 0 4 14 6 55 2 76 4 83 43 25 51 14 48 2 76 0 69 4 14 10 0 4 83 8 27 pressures are in bar Suction pressure drops gradually throughout the freeze cycle v01 801 EC30 SELF CONTAINED AIR COOLED LARGE CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Tem
17. 4 48 5 17 20 17 24 12 41 4 14 1 93 9 31 11 03 6 21 7 24 25 17 24 13 79 4 48 2 07 10 68 12 41 6 89 7 93 32 21 37 17 24 4 69 2 27 12 07 15 17 8 27 10 00 43 26 20 21 37 5 17 2 48 16 55 17 24 9 65 11 72 pressures are in bar Suction pressure drops gradually throughout the freeze cycle 64 EC80 SELF CONTAINED AIR COOLED LARGE CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Freeze Time Entering Water Temperature C Harvest Condenser Time c 10 15 20 25 30 35 40 10 19 5 20 9 15 21 7 23 2 22 5 24 1 20 23 9 25 5 24 8 26 6 25 9 27 7 27 0 28 9 28 6 30 5 25 26 4 28 2 28 7 30 6 28 9 30 8 30 2 32 3 31 7 33 9 3 0 min 30 29 5 31 4 30 9 33 0 32 5 34 7 34 2 36 5 36 1 38 5 38 2 40 7 40 5 43 1 35 37 0 39 4 39 2 41 8 41 7 44 4 44 4 47 3 47 5 50 5 40 49 1 52 3 52 8 56 2 57 1 60 8 45 59 2 63 0 64 8 69 0 71 3 75 8 Times in minutes Continued on next page 4 EC80 SELF CONTAINED AIR COOLED LARGE CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 93 3 15 85 1 82 4 20 78 4 75 7 73 0 70 3 66 9 25 71 8 66 7 66 3 63 6 60 9 30 65 1 62 4 59 6 56 9 54 2 51 5 48 8 35 53 0 50 2 47 5 44 8 42 1 40 40 8 38 1 35 4 45 34 2 31 4 28 7 Based
18. 43 1 46 0 46 4 49 4 48 8 52 0 3 0 min 30 43 1 46 0 46 4 49 4 48 8 52 0 51 5 54 8 54 5 58 0 59 6 63 4 63 6 67 6 35 54 5 58 0 59 6 63 4 63 6 67 6 68 0 72 3 76 0 80 8 40 76 0 80 8 82 3 87 5 89 8 95 4 45 89 8 95 4 103 8 110 3 115 7 122 9 Times in minutes Continued on next page t EC65 SELF CONTAINED AIR COOLED LARGE CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 68 15 60 57 20 55 53 50 48 44 25 50 43 46 43 41 30 46 43 41 39 37 34 32 35 37 34 32 30 27 40 27 25 23 45 23 20 18 Based on average ice weight of 1 49 1 58 kg per cycle Individual cube weight 32 grams 1 Number of individual cubes per cycle 48 65 SELF CONTAINED AIR COOLED LARGE CUBE Continued Operating Pressures Freeze Cycle Harvest Cycle Air Temp Entering Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 12 07 9 65 4 14 1 72 6 21 7 58 4 83 6 21 20 15 86 12 41 4 14 1 93 8 27 11 03 5 52 7 93 25 17 58 15 17 4 48 2 07 8 27 11 72 7 58 9 31 32 20 68 17 24 4 83 2 21 8 27 13 79 8 62 10 69 43 25 51 22 06 5 52 2 41 9 31 14 82 9 65 12 07 pressures are in bar Suction pressure drops gradually throughout the freeze cycle phl EC65 SELF CONTAINED WATER COOLED STANDARD CUBE NOT
19. COOLED STANDARD CUBE Continued 24 Hour Ice Production Air Temp Around Ice Water Temperature C Machine C 10 15 20 25 30 35 40 10 45 15 44 43 20 43 42 41 40 38 25 42 40 40 39 38 30 41 40 39 38 37 36 35 35 38 37 36 35 34 40 35 34 33 45 33 32 31 Based on average ice weight of 0 72 0 80 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 40 Continued on next page 6 50 SELF CONTAINED WATER COOLED STANDARD CUBE Continued Condenser Water Consumption 32 Air Temperature Around Ice Machine Water Temperature C 15 21 32 Gal 24 Hours 690 1194 4752 Water regulating valve set to maintain 9 bar discharge pressure Operating Pressures Water Temperature Freeze Cycle Harvest Cycle Entering Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 9 65 7 93 2 34 07 4 83 7 58 2 41 3 79 20 11 38 7 93 2 48 07 5 17 9 65 2 41 5 86 25 11 38 7 93 2 62 07 5 17 9 65 2 41 5 86 32 12 07 8 27 2 90 07 5 17 9 65 2 41 5 86 43 13 10 8 62 3 59 07 5 17 9 65 2 41 6 55 Set water regulating valve to 9 bar 5 minutes into freeze cycle All pressures are in bar Suction pres sure drops gradually throughout the freeze cycle 6 50 SELF CONTAINED WATER COOLED LARGE CUBE NOTE These
20. Cooled Standard 144 EC65 Self Contained Water Cooled Large Cube NR Na dy Ne ds ANUS 147 EC80 Self Contained Air Cooled Standard Cube AMAN es 150 EC80 Self Contained Air Cooled Large Cube ee 153 EC80 Self Contained Water Cooled Standard we d a eee La 156 EC80 Self Contained Water Cooled Large Cube bie Seri aer ci gel er so f wa 159 Diagrams Wiring 163 Mechanical Timer Models 163 SCR MOdelS else EE UNS 164 No Timer Models 165 Tubing 166 EC18 EC20 EC30 EC40 Tubing Schematic 166 EC50 EC65 EC80 Tubing Schematic 167 This Page Intentionally Left Blank General Information Model Numbers This manual covers the following models Self Contained Water Cooled Air Cooled ECS018A ECS020A ECS020W ECG020A ECG020W ECS030A ECS030W ECGO30A ECG030W ECS040A ECS040W ECG040A ECG040W ECS050A ECS050W ECGO50A ECG050W ECS065A ECS065W ECG065A ECG065W ECS080A ECS080W ECGO080A ECG080W This Page Intentionally Left Blank 2 Installation Location of Ice Machine The location selected for the ice machine must meet the following criteria If any of these criteria are not met select ano
21. LOW AMBIENT ADJUSTMENT FOR SCR TIMER Adjust SS single shot time dial to 5 minutes Part Number 80 1479 3 10 10 71 HIGH PRESSURE CUTOUT HPCO CONTROL Water Cooled Only FUNCTION Stops the ice machine if subjected to excessive high side pressure The HPCO control is normally closed and opens on a rise in discharge pressure SPECIFICATIONS Cut out 20 7 Bar 300 psig Cut in 10 3 Bar 150 psig Must be below 7 Bar 10 psig to reset CHECK PROCEDURE 1 Set ON OFF WASH switch to OFF 2 Connect manifold gauges 3 Hook voltmeter in parallel across the HPCO leaving wires attached 4 Close the valve to the water 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 Warning If discharge pressure exceeds 21 4 Bar 310 psig and the HPCO control does not cut out set ON OFF WASH switch to OFF to stop ice machine operation Replace the HPCO control if it e Will not reset below 10 3 Bar 150 psig Does not open at the specified cut out point 72 Part Number 80 1479 3 10 10 HOT GAS VALVE General The hot gas valve is an electrically operated valve that opens when energized and closes when de energized Normal Operation The valve is de energized closed during the freeze cycle and energi
22. Production Air Temp Around Ice Water Temperature C Machine C 10 15 20 25 30 35 40 10 59 15 58 56 20 57 55 53 51 50 25 55 53 52 50 49 30 54 52 51 49 47 46 44 35 49 48 46 44 43 40 45 43 42 45 44 42 40 Based on average ice weight of 1 49 1 58 kg per cycle Individual cube weight 32 grams 1 Number of individual cubes per cycle 48 6b EC65 SELF CONTAINED WATER COOLED LARGE CUBE Continued Condenser Water Consumption 32 Air Temperature Around Ice Machine Water Temperature 15 21 32 Gal 24 Hours 836 1171 3896 Water regulating valve set to maintain 15 9 bar discharge pressure Operating Pressures Water Temperature Freeze Cycle Harvest Cycle Entering Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 15 86 15 51 4 14 1 52 6 89 10 00 5 52 6 89 20 15 86 15 51 4 83 1 52 7 58 10 68 6 21 7 93 25 16 20 15 51 4 83 1 52 7 58 10 68 6 21 7 93 32 16 89 15 51 4 83 1 65 7 93 11 03 6 89 8 27 43 17 93 16 20 5 52 1 93 8 27 12 41 7 58 8 96 Set water regulating valve to 15 9 bar 5 minutes into freeze cycle All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 04 EC80 SELF CONTAINED AIR COOLED STANDARD CUBE NOTE These characteristics may vary depending on operating conditions
23. characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Around Freeze Time Ice Machine Water Temperature C Harvest Time 10 15 20 25 30 35 40 10 26 8 28 7 15 27 3 29 3 28 4 30 4 20 27 8 29 8 29 0 31 1 30 2 32 4 31 5 33 8 32 2 34 5 25 29 0 31 1 30 2 32 4 30 8 33 1 32 2 34 5 32 9 35 3 ens 30 29 6 31 7 30 8 33 1 31 5 33 8 32 9 35 3 34 5 36 9 35 3 37 8 37 1 39 7 35 32 9 35 3 33 7 36 1 35 3 37 8 37 1 39 7 38 0 40 7 40 36 2 38 7 38 0 40 7 39 0 41 8 45 37 1 39 7 39 0 41 8 41 1 44 0 Times in minutes Continued on next page 96 EC50 SELF CONTAINED WATER COOLED LARGE CUBE Continued 24 Hour Ice Production Air Temp Around Ice Water Temperature C Machine C 10 15 20 25 30 35 40 10 59 15 58 56 20 57 55 53 51 50 25 55 53 52 50 49 30 54 52 51 49 47 46 44 35 49 48 46 44 43 40 45 43 42 45 44 42 40 Based on average ice weight of 1 24 1 32 kg per cycle Individual cube weight 32 grams 1 Number of individual cubes per cycle 40 4 1 EC50 SELF CONTAINED WATER COOLED LARGE CUBE Continued Condenser Water Consumption 32 Air Temperature Around Ice Machine Water Temperature C 15 21 32 Gal 24 Hours 836 1171 3896 Water regul
24. precautions must be taken if the ice machine is to be removed from service for an extended period of time or exposed to ambient temperatures of 0 C 32 F or below Caution If water is allowed to remain in the ice machine in freezing temperatures severe damage to some components could result Damage of this nature is not covered by the warranty Follow the 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 drain 5 Blow compressed air in the drain opening and water valve outlet hose then reattach 6 Make sure water is not trapped in any of the water or drain lines Part Number 80 1479 3 10 10 23 WATER COOLED ICE MACHINES 1 Perform steps 1 6 under Air Cooled Ice Machines 2 Disconnect the incoming water and drain lines from the water cooled condenser 3 Insert a large screwdriver between the bottom spring coils of the water regulating valve Pry upward to open the valve 4 Hold the valve open and blow compressed air through the condenser until water no longer exits 24 Part Number 80 1479 3 10 10 Operation Sequence Of Operation Initia
25. terminates freeze and harvest cycles Operation Thermostat contacts C amp L are closed at temperatures above cut in and contacts C amp H are closed at temperatures below cut in Setting Control For Proper Operation Correct setting will vary with operating ambient To obtain correct setpoint capture and weigh the ice from 1 freeze cycle refer to ice production check for complete details Refer to Cycle Time 24 hour Ice Production charts for correct cube weight and quantity White or misshapen cubes indicate cleaning is required Part Number 80 1479 3 10 10 65 Check Procedure 1 Make sure bulb is inserted correctly flush with end of bulb well 2 Check evaporator temperature is evaporator frosted 3 Move the thermostat adjustment to the coldest and warmest setting did the contacts change position 4 Attach a thermocouple and measure the temperature at the bulb At 0 C the thermostat can be adjusted warmer or colder to change contact positions If readings do not match chart replace the thermostat doniperature Contacts Contacts P C amp L C amp H Above Setpoint Closed Open Bulb Below Setpoint Open Closed Bulb 66 Part Number 80 1479 3 10 10 MECHANICAL Function Extends the length of the freeze cycle after the evaporator thermostat closes initiates and terminates the harvest cycle Operation e Factory Setting is 11 5 minute freeze cycle 3 5 min
26. 0 10 DISCHARGE LINE TEMPERATURE ABOVE 71 C END OF FREEZE CYCLE Ice machines that are operating normally will have consistent maximum discharge line temperatures above 71 C DISCHARGE LINE TEMPERATURE BELOW 71 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 10096 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 correctly Part Number 80 1479 3 10 10 61 62 This Page Intentionally Left Blank Part Number 80 1479 3 10 10 Part Number 80 1479 3 10 10 63 Component Check Procedures ON OFF WASH FILL TOGGLE SWITCH Function The switch is used to place the ice machine in ON OFF or WASH mode of operation Specifications Double pole Double throw switch Check Procedure 1 Inspect the toggle switch for correct wiring 2 Isolate the toggle switch 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 Switch Setting Terminals Ohm Reading 5 6 Open 5 4 Closed ON 2 1 Cl
27. 3 10 10 SPRAY BAR The spray bar supplies water to the individual ice making cups Water from the Water Pump sprays through the nozzles located on the upper portion of the tubes 1 Grasp one end of the spray bar lift up and remove from seat formed in water trough 2 Remove both plastic 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 inside the spray bar ports The spray bar also disassembles for easy cleaning Part Number 80 1479 3 10 10 17 Sump Drain Overflow Tube The sump drain overflow tube 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 18 Part Number 80 1479 3 10 10 Maintenance INTERIOR CLEANING AND SANITIZING GENERAL Clean and sanitize the ice machine every six months for efficient operation If the ice machine requires more frequent cleaning and sanitizing consult a qualified service company to test the wat
28. 7 28 7 25 9 29 0 26 1 29 2 35 27 7 30 9 27 7 30 9 27 9 31 1 28 1 31 4 28 6 31 9 40 30 7 34 3 31 0 34 6 31 3 34 9 45 34 1 38 0 34 6 38 4 34 8 38 8 Times in minutes 6 18 SELF CONTAINED AIR COOLED STANDARD CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 18 5 15 18 0 17 9 20 16 9 16 8 16 7 16 6 16 8 25 15 9 15 2 15 6 15 5 15 4 30 14 8 14 7 14 6 14 5 14 3 14 2 141 35 13 4 13 4 13 3 13 2 13 0 40 12 2 12 1 12 0 45 11 1 11 0 10 9 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 Continued on next page 26 18 SELF CONTAINED AIR COOLED STANDARD CUBE Continued Operating Pressures Air Temp Entering Condenser C Freeze Cycle Harvest Cycle Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 6 55 4 48 1 10 0 14 3 10 4 14 2 07 3 10 20 9 31 6 89 1 24 0 28 4 48 5 52 3 10 4 14 25 10 69 7 24 1 38 0 34 4 83 6 55 3 79 4 48 32 13 10 9 31 1 72 0 55 6 20 8 27 5 17 5 86 43 17 24 12 07 1 72 0 69 7 58 10 69 6 21 7 58 pressures are in bar Suction pressure drops gradually throughout the freeze cycle c6 EC20 WITH TIMER SELF CONTAINED AIR COOLED STANDARD CUBE NOTE These charac
29. 9 0 41 8 41 1 44 0 25 35 3 37 8 37 1 39 7 40 1 42 9 43 5 46 5 46 1 49 3 2 5 min 30 39 0 41 8 41 1 44 0 44 8 47 9 49 0 52 4 52 3 55 9 58 1 62 0 62 6 66 9 35 50 6 54 1 54 1 57 8 60 3 64 4 65 2 69 6 74 1 79 1 40 67 9 72 5 77 7 82 9 85 8 91 5 45 81 5 87 0 90 5 96 5 108 1 115 3 Times in minutes Continued on next page 8Ll EC40 SELF CONTAINED AIR COOLED LARGE CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 56 15 53 50 20 49 47 44 42 40 25 46 44 41 38 36 30 42 40 37 34 32 29 27 35 33 31 28 26 23 40 25 22 20 21 19 16 Based on average ice weight of 1 24 1 32 kg per cycle Individual cube weight 32 grams 1 Number of individual cubes per cycle 40 6 40 SELF CONTAINED AIR COOLED LARGE CUBE Continued Operating Pressures Air Temp Entering Condenser C Freeze Cycle Harvest Cycle Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 7 58 4 48 1 72 14 2 41 4 14 1 38 2 07 20 11 03 5 86 1 94 28 3 45 5 87 1 72 3 45 25 13 10 7 24 1 94 34 3 79 6 55 2 07 4 14 32 15 86 9 31 1 94 41 4 82 8 27 2 76 4 82 43 21 37 11 72 2 34 48 5 17 11 72 3 45 7 93 pressures in bar Suction pressure drops gradually throughout the freeze cycle 001 40 SELF CONTAINE
30. C Condenser C 10 15 20 25 30 35 40 10 18 5 15 18 0 17 9 20 16 9 16 8 16 7 16 6 16 8 25 15 9 15 2 15 6 15 5 15 4 30 14 8 14 7 14 6 14 5 14 3 14 2 141 35 13 4 13 4 13 3 13 2 13 0 40 12 2 12 1 12 0 45 11 1 11 0 10 9 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 0 EC20 WITHOUT SELF CONTAINED AIR COOLED STANDARD CUBE Continued Operating Pressures Air Temp Entering Freeze Cycle Harvest Cycle Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 6 55 4 48 1 10 0 14 3 10 4 14 2 07 3 10 20 9 31 6 89 1 24 0 28 4 48 5 52 3 10 4 14 25 10 69 7 24 1 38 0 34 4 83 6 55 3 79 4 48 32 13 10 9 31 1 72 0 55 6 20 8 27 5 17 5 86 43 17 24 12 07 1 72 0 69 7 58 10 69 6 21 7 58 pressures are in bar Suction pressure drops gradually throughout the freeze cycle e01 EC30 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 Freeze Time Entering Water Temperature C Harvest Condenser Time C 10 15 20 25 30 35 40 10 16 5 18 8 15 18 6 21 2 19 4 22 1 20 20 3 23 1 21 3 24 1 23 4 26 6 24 6 27 9 26 0 29 4 25 23 4 26 6 24 6 27 9 26 0 26 9 27 5 31 1 30 9 34 9 3 5 min
31. D WATER COOLED STANDARD CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Around Freeze Time Ice Machine Water Temperature C Harvest Time 10 15 20 25 30 35 40 10 21 8 24 6 15 23 1 26 0 24 5 27 6 20 24 5 27 6 261 294 27 9 31 4 29 9 33 7 33 5 37 6 25 25 3 28 5 27 9 31 4 29 9 33 7 32 3 36 2 34 9 39 2 NAA 30 27 0 30 4 28 9 32 5 31 1 34 9 33 5 37 6 36 4 40 8 41 6 46 6 45 9 51 4 35 33 5 37 6 36 4 40 8 39 7 44 5 43 6 48 9 48 3 54 1 40 41 6 46 6 48 3 54 1 54 1 60 5 45 45 9 51 4 51 1 57 1 57 5 64 3 Times in minutes lLel EC40 SELF CONTAINED WATER COOLED STANDARD CUBE Continued 24 Hour Ice Production Air Temp Around Ice Water Temperature C Machine C 10 15 20 25 30 35 40 10 41 15 39 37 20 37 35 33 31 28 25 36 33 31 29 27 30 34 32 30 28 26 23 21 35 28 26 24 22 20 40 23 20 18 45 21 19 17 Based on average ice weight of 0 72 0 80 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 40 Continued on next page 40 SELF CONTAINED WATER COOLED STANDARD CUBE Continued Condenser Water Consumption 32 Air Temperature Around Ice Machine Water Temperature 15 21 32 Ga
32. E NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Freeze Time Entering Water Temperature Harvest Condenser Time C 10 15 20 25 30 35 40 10 18 1 20 5 15 19 5 22 1 20 1 22 7 20 20 6 23 3 21 8 24 6 23 1 26 0 23 8 26 8 25 3 28 5 25 22 4 25 3 23 8 26 8 24 5 27 6 26 1 29 4 27 0 30 4 3 5 min 30 24 5 27 6 25 3 28 5 27 0 30 4 27 9 31 4 29 9 33 7 32 3 36 2 33 5 37 6 35 28 9 32 5 31 1 34 9 33 5 37 6 34 9 39 2 38 0 42 6 40 36 4 40 8 39 7 44 5 41 6 46 6 45 41 6 46 6 43 6 48 9 48 3 54 1 Times in minutes L l EC50 SELF CONTAINED AIR COOLED STANDARD CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 48 15 45 44 20 43 4 39 38 36 25 40 38 37 35 34 30 37 36 34 33 31 29 28 35 32 30 28 27 25 40 26 24 23 45 23 22 20 Based on average ice weight of 0 72 0 80 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 40 Continued on next page EC50 SELF CONTAINED AIR COOLED STANDARD CUBE Continued Operating Pressures Air Temp Entering Condenser C Freeze Cycle Harvest Cycle Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure
33. E These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Around Freeze Time Ice Machine Water Temperature C Harvest Time 10 15 20 25 30 35 40 10 23 9 26 9 15 23 9 26 9 26 8 30 1 20 24 5 27 5 26 8 30 1 30 3 34 0 24 8 38 9 39 3 43 9 25 25 0 28 1 27 4 30 8 31 1 34 9 35 8 40 1 40 6 45 4 3 0 min 30 25 6 28 8 28 1 31 6 32 0 35 8 36 9 41 3 42 0 46 9 50 4 56 2 62 6 69 8 35 32 9 42 6 38 1 42 6 43 4 48 5 52 4 58 5 65 8 73 3 40 45 0 50 3 54 7 61 0 69 2 77 1 45 46 7 52 1 57 1 63 7 73 0 81 4 Times in minutes 9t 4 EC65 SELF CONTAINED WATER COOLED STANDARD CUBE Continued 24 Hour Ice Production Air Temp Around Ice Water Temperature C Machine C 10 15 20 25 30 35 40 10 53 15 53 48 20 52 48 43 38 34 25 51 47 42 37 33 30 50 46 41 36 32 27 22 35 40 35 31 26 21 40 30 25 20 45 29 24 19 Based on average ice weight of 1 01 1 12 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 56 Continued on next page 65 SELF CONTAINED WATER COOLED STANDARD CUBE Continued Condenser Water Consumption 32 Air Temperature Around Ice Machine Water Temperature 15 21 32 Gal 24 Hours 689 1057 9488 Operating Pressu
34. G50A 12 6 13 0 14 0 ECS50W 11 1 11 2 11 5 ECG50W 11 0 10 9 11 4 ECS65A 12 6 13 1 14 1 ECG65A 12 9 13 2 14 1 ECS65W 11 2 11 3 11 7 ECG65W 11 0 10 9 11 4 ECS80A 15 4 16 3 17 4 ECG80A 15 1 15 8 16 9 ECS80W 13 6 13 8 13 9 ECG80W 13 2 13 4 13 7 Part Number 80 1479 3 10 10 ICE MACHINE HEAT OF REJECTION Series Ice Heat of Rejection Machine Air Conditioning Peak EC18 1 150 2 300 EC20 1 400 2 600 0 1 900 3 300 40 2100 4 100 EC50 2 600 5 000 EC65 2 900 5 000 EC80 4 300 7 400 BTU Hour Because the heat of rejection varies during the ice making cycle the figure shown is an average Part Number 80 1479 3 10 10 Component Identification Evaporator Thermostat Air Cooled Condenser Bin Thermostat On Off Wash Fill Toggle Switch Part Number 80 1479 3 10 10 11 Chute Evaporator Switch Part Number 80 1479 3 10 10 12 COMPONENT REMOVAL Top Cover For 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 Part Number 80 1479 3 10 10 13 Bin Door Allows access to the storage bin 1 Remove top cover 2 Slide door up until rear pins al
35. STANDARD CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 41 15 39 37 20 36 34 33 31 27 25 33 31 30 28 26 30 30 28 26 25 23 22 20 35 23 22 20 18 17 40 17 15 14 45 14 12 11 Based on average ice weight of 0 72 0 80 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 40 Continued on next page 91 40 SELF CONTAINED AIR COOLED STANDARD CUBE Continued Operating Pressures Air Temp Entering Condenser C Freeze Cycle Harvest Cycle Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 7 58 4 48 1 72 14 2 41 4 14 1 38 2 07 20 11 03 5 86 1 94 28 3 45 5 87 1 72 3 45 25 13 10 7 24 1 94 34 3 79 6 55 2 07 4 14 32 15 86 9 31 1 94 41 4 82 8 27 2 76 4 82 43 21 37 11 72 2 34 48 5 17 11 72 3 45 7 93 pressures in bar Suction pressure drops gradually throughout the freeze cycle 40 SELF CONTAINED AIR COOLED LARGE CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Freeze Time Entering Water Temperature C Harvest Condenser Time C 10 15 20 25 30 35 40 10 28 4 30 4 15 30 2 32 4 32 2 34 5 20 32 9 35 3 34 5 36 9 37 1 39 7 3
36. aken as follows Beginning of Freeze cycle 3 bar at 1 min Middle of Freeze cycle 2 bar at 20 min End of Freeze cycle 1 bar at 40 min 4 Compare the actual reeze cycle suction pressure Step 3 to the published freeze cycle time and pressure comparison Step 2B Determine if the suction pressure is high low or acceptable In this example the suction pressure is considered high throughout the freeze cycle It should have been Approximately 1 94 bar at 1 minute not 3 bar Approximately 1 17 bar at 20 minutes not 2 bar Approximately 41 bar at 40 minutes not 1 bar Part Number 80 1479 3 10 10 57 SUCTION PRESSURE HIGH CHECKLIST Improper Installation Refer to Installation Visual Inspection Checklist Discharge Pressure Discharge pressure is too high and is affecting suction pressure refer to Freeze Cycle Discharge Pressure High Checklist Improper Refrigerant Charge e Overcharged Wrong type of refrigerant Non Condensable in system Other Hot gas valve leaking e TXV flooding check bulb mounting Defective compressor 58 Part Number 80 1479 3 10 10 SUCTION PRESSURE LOW CHECKLIST Improper Installation Refer to Installation Visual Inspection Checklist Discharge Pressure e Discharge pressure is too low and is affecting suction pressure refer to Freeze Cycle Discharge Pressure Low Checklist Improper Refrigerant Charge e Underch
37. arged e Wrong type of refrigerant Other e 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 e TXV starving e Moisture in refrigeration system NOTE Do not limit your diagnosis to only the items listed in the checklists Part Number 80 1479 3 10 10 59 Discharge Line Temperature Analysis General Compressor discharge line temperature on a normally operating ice machine steadily increases throughout the freeze cycle Comparing the temperatures over several cycles will result in a consistent maximum discharge line temperature Ambient air temperatures affect the maximum discharge line temperature Higher ambient air temperatures at the condenser higher discharge line temperatures at the compressor Lower ambient air temperatures at the condenser lower discharge line temperatures at the compressor Regardless of ambient temperature the freeze cycle discharge line temperature will be higher than 71 C a normally operating ice machine Procedure Connect a temperature probe on the compressor discharge line within 6 of the compressor Observe the discharge line temperature for the last ten minutes of the freeze cycle and record the maximum discharge line temperature 60 Part Number 80 1479 3 1
38. ating valve set to maintain 9 bar discharge pressure Operating Pressures Water Temperature Freeze Cycle Harvest Cycle Entering Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 9 65 7 93 2 34 07 4 83 7 58 2 41 3 79 20 11 38 7 93 2 48 07 5 17 9 65 2 41 5 86 25 11 38 7 93 2 62 07 5 17 9 65 2 41 5 86 32 12 07 8 27 2 90 07 5 17 9 65 2 41 5 86 43 13 10 8 62 3 59 07 5 17 9 65 2 41 6 55 Set water regulating valve to 9 bar 5 minutes into freeze cycle All pressures are in bar Suction pres sure drops gradually throughout the freeze cycle 8 1 EC65 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 Freeze Time Entering Water Temperature C Harvest Condenser Time C 10 15 20 25 30 35 40 10 21 2 23 8 15 23 4 26 4 25 0 28 1 20 25 6 28 8 27 4 30 8 29 6 33 2 32 0 35 8 34 8 38 9 25 27 4 30 8 32 0 35 8 32 0 35 8 34 8 38 9 38 1 42 6 0 fin 30 30 3 34 0 32 9 36 8 35 8 40 1 39 3 43 9 43 4 48 5 48 4 54 1 54 7 61 0 35 39 3 43 9 43 4 48 5 48 4 54 1 54 7 61 0 65 8 73 3 40 57 1 63 7 65 8 73 3 77 3 86 1 45 69 2 77 1 82 1 91 4 100 4 111 7 Times in minutes 6 1 EC65 SELF CONTAINED AIR COOLED STANDARD CUBE Continued 24 Hour Ice Production
39. ation is suspected use a Total Test Kit from Totaline or a similar diagnostic tool These devices sample refrigerant eliminating the need to take an oil sample Follow the manufacturer s directions If a refrigerant test kit indicates harmful levels of 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 suction and discharge lines at the compressor for burnout deposits 5 If no signs of contamination are present perform an acid oil test to determine the type of cleanup required 80 Contamination Cleanup Chart Symptoms Findings Required Cleanup Procedure No symptoms or suspicion of Normal evacuation contamination recharging procedure Moisture Air Contamination Mild contamination symptoms Refrigeration cleanup procedure system open to atmosphere for longer than 15 minutes Refrigeration test kit and or acid oil test shows contamination No burnout deposits in open compressor lines Mild Compressor Burnout Mild contamination symptoms Oil appears clean cleanup procedure but smells acrid Refrigeration test kit or acid oil test shows harmful acid content No burnout deposits in open compressor lines Severe Compressor Burnout Severe contamination symptoms Oil is discolored cleanup procedure acidic and smells a
40. az Manitowoc EC Models Technician 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 Manitowoc Ice P N 80 1520 3 9 10 Safety Notices When using or servicing these Ice Machines be sure to pay close attention to the safety notices in this handbook Disregarding the notices may lead to serious injury and or damage to the ice machine 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 carefully Procedural Notices When using or servicing these Ice Machines be sure to read the procedural notices in this handbook These notices supply helpful information that may assist you as you work Throughout this handbook you will see the following types of procedural notices Important Text 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 work NOTE Text set of
41. blished 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 then drop throughout the freeze cycle Part Number 80 1479 3 10 10 53 DISCHARGE PRESSURE HIGH CHECKLIST Improper Installation Refer to Installation Visual Inspection Checklist Restricted Condenser Air Flow High inlet air temperature e Condenser discharge air re circulation Dirty condenser fins e Defective fan motor Improper Refrigerant Charge e Overcharged e Non condensable in system e Wrong type of refrigerant Other High side refrigerant lines component restricted before mid condenser 54 Part Number 80 1479 3 10 10 FREEZE CYCLE DISCHARGE PRESSURE LOW CHECKLIST Improper Installation Refer to Installation Visual Inspection Checklist Improper Refrigerant Charge e 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 Part Number 80 1479 3 10 10 55 Analyzing Suction Pressure The suction pressure gradually drops throughout the freeze cycle The actual suction pressure and drop rate changes as the air and water temperature entering the ice machine changes These variables also determine the freeze cycle times To analyze and identify the proper suctio
42. closed 5 Timer functions mechanically 6 Timer cam changes relay micro switch position relay 1 wires 3 amp 6 16 must close 44 Part Number 80 1479 3 10 10 ICE MACHINE WILL HARVEST Mechanical Timer 1 2 Evaporator temperature below setpoint Evaporator thermostat cap tube inserted correctly Flush with end of bulb well Evaporator thermostat closed wires 4 amp timer motor Timer motor winding closed Timer functions mechanically Timer cam changes micro switch position relay 1 wires 3 amp 6 must close Micro switch functions Line voltage at hot gas valve and water inlet Solenoid wires 6 amp 7 wires 21 amp 10 Part Number 80 1479 3 10 10 45 SCR Timer Models WATER PUMP WON T RUN SCR Timer 1 Toggle switch terminals 2 amp 1 closed wires 64 amp 3 2 Timer relay closed wires 3 amp 5 contacts C amp NC on timer 3 Water pump winding closed TOGGLE SWITCH TIME DELAY RELAY 46 Part Number 80 1479 3 10 10 HOT GAS VALVE WON T ENERGIZE SCR Timer 1 Line voltage at hot gas valve Wires 6 amp 7 e Yes Replace hot gas valve coil e No Refer to SCR timer diagnostics HOT GAS SOLENOID TIME DELAY RELAY WATER INLET SOLENOID Part Number 80 1479 3 10 10 47 WATER VALVE WON T ENERGIZE SCR Timer 1 Line voltage at water inlet valve Wires 21 amp 22 Yes Replace water in
43. compressor 4 Sweep through the open system with dry nitrogen Important Refrigerant sweeps are not recommended as they release CFC s into the atmosphere 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 82 Important Dry nitrogen is recommended for this procedure This will prevent CFC release A Pull vacuum to 1000 microns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 35 bar UJ Change the vacuum pump oil C Pull vacuum to 500 microns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 35 bar D Change the vacuum pump oil E Pull vacuum to 500 microns Run the vacuum pump for 1 hour additional hour Charge the system 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 acceptable Operate the ice machine for 48 72 hours Replace the suction line and liquid line drier if necessary 84 FILTER DRIERS Liquid Line Filter Drier The filter drier used
44. crid Burnout deposits found in the compressor lines and other components 81 MILD SYSTEM CONTAMINATION CLEANUP Procedure 1 Replace any failed components 2 If the compressor is good change the oil 3 Replace the liquid line drier NOTE If the contamination is from moisture use heat lamps during evacuation Position them at the compressor condenser and evaporator prior to evacuation Do not position heat lamps too close to plastic components or they may melt or warp Important Dry nitrogen is recommended for this procedure This will prevent CFC release Follow the normal evacuation procedure except replace the evacuation step with the following A Pull vacuum to 1000 microns Break the vacuum with dry nitrogen and sweep the system Pressurize to a minimum of 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 on remotes NOTE Perform a pressure test to be sure there are no leaks Charge the system with the proper refrigerant to the nameplate charge Operate the ice machine 82 SEVERE SYSTEM CONTAMINATION CLEANUP PROCEDURE 1 Remove the refrigerant charge 2 Remove the compressor 3 Wipe away any burnout deposits from suction and discharge lines at
45. ctrical Specifications 6 Power Consumption kwh per 24 hours 8 Power Consumption kwh per 24 hours 9 Ice Machine Heat of Rejection 10 Component Identification Component 13 Spray eei ERREUR RENE 17 Maintenance Cleaning amp Sanitizing Procedure 20 Operation Sequence Of Operation 25 Ice Cube Thickness 28 Cube 29 Troubleshooting All Models ve RR 31 Ice Machine Will Not Run 31 Compressor Won t 32 Compressor Electrical Diagnostics 33 Diagnosing Start Components 35 No Timer Models 36 Water Pump Won t 36 Hot Gas Valve Won t Energize 37 Water Inlet Valve Won t Energize 38 Ice Machine Prematurely Harvests 39 Ice Machine Will Not Harvest 40 Mechanical Timer Models 41 Hot Gas Valve Won t Energize 42 Water Inlet Valve Won t Energize 43 Ice Machine Prematurely Harvests 44 Ice Machine Will Not Harvest 45 SCR Timer 46 Water Pump Won t 46 Hot Gas Valve Won t Energize 47 Water Inlet Valve Won t Energize
46. d on next page EC20 WITH SELF CONTAINED AIR COOLED LARGE CUBE Continued Operating Pressures Air Temp Entering Freeze Cycle Harvest Cycle Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 8 96 6 89 1 72 0 2 76 5 51 1 72 4 14 20 11 03 7 93 2 07 0 2 76 6 89 2 76 5 51 43 8 27 12 41 2 07 0 69 3 10 7 58 3 10 7 58 pressures in bar Suction pressure drops gradually throughout the freeze cycle 86 66 20 WITHOUT 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 Freeze Time Entering Water Temperature C Harvest Condenser Time C 10 15 20 25 30 35 40 10 19 1 21 4 15 19 7 22 1 19 8 22 2 20 21 2 23 8 21 4 23 9 21 5 24 1 21 7 24 3 21 4 23 9 25 22 8 25 5 24 0 26 8 23 3 26 0 23 4 26 2 23 6 26 4 3 5 min 30 24 7 27 6 24 9 27 8 25 1 28 1 25 3 28 3 25 7 28 7 25 9 29 0 26 1 29 2 35 27 7 30 9 27 7 30 9 27 9 31 1 28 1 31 4 28 6 31 9 40 30 7 34 3 31 0 34 6 31 3 34 9 45 34 1 38 0 34 6 38 4 34 8 38 8 Times in minutes Continued on next page 001 EC20 WITHOUT TIMER SELF CONTAINED AIR COOLED STANDARD CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature
47. e toggle switch in ice position Verify correct voltage is present and matches nameplate voltage High pressure switch must be closed on water cooled ice machines move on to 4 if air cooled ice machine If you have voltage at L1 and no voltage at 15 on the Bin Thermostat which is easy to access the HPCO is open Bin thermostat must be closed before any components can be energized Check for voltage at wires 15 and 64 Part Number 80 1479 3 10 10 31 COMPRESSOR WON T RUN If the water pump is running and the compressor is not it may be tripping on overload or tripping the breaker fuse Check for grounded winding if breaker keeps tripping 1 Toggle switch terminals 5 amp 4 closed wires 49 amp 13 2 Start capacitor and relay function 3 Compressor windings closed 4 Refer to compressor diagnostics 32 Part Number 80 1479 3 10 10 COMPRESSOR ELECTRICAL DIAGNOSTICS The compressor does not start or will trip repeatedly on overload Check Resistance OHM Values NOTE Compressor windings can have very low ohm values Use a properly calibrated meter Perform the resistance test after the compressor cools The compressor dome should be cool enough to touch below 49 C to assure that the overload is closed and the resistance readings will be accurate Single Phase Compressors 1 Disconnect power from the condensing unit and remove the wires from the compressor terminals 2
48. e exceeds the maximum recommended pressure 5 bar 500 install a water pressure regulator e Install a water shut off valve Drain Connections Drain lines must have a 2 5 cm per meter drop and must not create traps e The floor drain must be large enough to accommodate drainage from all drains Caution The ice machine must be protected if it will be subjected to temperatures below O C Failure caused by exposure to freezing temperatures is not covered by the warranty 4 Part Number 80 1479 3 10 10 ELECTRICAL REQUIREMENTS Voltage The maximum allowable voltage variation is 6 of the rated voltage on the ice machine model serial number plate at start up when the electrical load is highest All ice machines are factory pre wired with a power cord only no plug is supplied Fuse Circuit Breaker A separate fuse circuit breaker must be provided for each ice machine 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 run etc so a qualified electrician must make the determination Part Number 80 1479 3 10 10 ELECTRICAL SPECIFICATIONS Air Water Ice vanne NEC UNE NL
49. ed on next page vel EC40 SELF CONTAINED WATER COOLED LARGE CUBE Continued 24 Hour Ice Production Air Temp Around Ice Water Temperature C Machine C 10 15 20 25 30 35 40 10 52 15 50 47 20 48 46 43 40 37 25 47 42 41 38 35 30 45 42 39 36 33 30 27 35 37 34 32 29 26 40 30 27 24 45 28 25 22 Based on average ice weight of 1 24 1 32 kg per cycle Individual cube weight 32 grams 1 Number of individual cubes per cycle 40 Gcl 40 SELF CONTAINED WATER COOLED LARGE CUBE Continued Condenser Water Consumption 32 Air Temperature Around Ice Machine Water Temperature 15 21 32 Gal 24 Hours 563 739 2474 Water regulating valve set to maintain 9 bar discharge pressure Operating Pressures Water Temperature Freeze Cycle Harvest Cycle Entering Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 10 34 8 62 1 79 28 3 10 5 87 2 07 3 45 20 11 03 8 62 1 79 34 3 10 7 24 2 07 4 82 25 11 03 8 62 1 79 41 3 10 7 24 2 07 4 82 32 11 03 8 62 2 00 41 3 10 7 24 2 07 4 82 43 11 72 8 62 2 00 48 3 45 8 62 2 07 5 87 Set water regulating valve to 9 bar 5 minutes into freeze cycle pressures are in bar Suction pres sure drops gradually throughout the freeze cycle 9c EC50 SELF CONTAINED AIR COOLED STANDARD CUB
50. er motor Line voltage at hot gas valve and water inlet Solenoid HOT GAS C EVAP THERMOSTAT SOLENOID 1 283 WATER INLET SOLENOID Part Number 80 1479 3 10 10 Mechanical Timer Models WATER PUMP WON T RUN Mechanical Timer 1 Toggle switch terminals 2 amp 1 closed wires 64 amp 3 2 Timer micro switch closed relay 2 wires 33 amp 5 3 Water pump winding closed Part Number 80 1479 3 10 10 41 HOT GAS VALVE WON T ENERGIZE Mechanical Timer 1 Toggle switch terminals 2 amp 1 closed wires 64 amp 3 2 Timer micro switch closed relay 1 wires 3 amp 6 3 Hot gas valve coil winding closed 42 Part Number 80 1479 3 10 10 WATER INLET VALVE WON T ENERGIZE Mechanical Timer The hot gas valve and water inlet valve energize together in the harvest cycle If the hot gas valve energizes verify 1 and then go right to 4 1 Water supplied to the ice machine 2 Toggle switch terminals 2 amp 1 closed wires 64 amp 3 3 Timer micro switch closed relay 1 wires 3 amp 6 4 Water inlet valve coil winding closed Part Number 80 1479 3 10 10 43 ICE MACHINE PREMATURELY HARVESTS Mechanical Timer 1 Evaporator thermostat correctly set 2 Timer micro switch relays in N O position wires 3 amp 46 16 open wires 33 amp 4 5 closed 3 Evaporator thermostat terminals 2 amp 3 Common open 4 Timer motor winding
51. er quality and recommend appropriate water treatment An extremely dirty ice machine must be taken apart for cleaning and sanitizing Caution and Sanitizer solutions together Use only approved Ice Machine Cleaner and Sanitizer Read and understand all labels printed on bottles before use Do not mix Ice Machine Cleaner Warning Sanitizer Wear rubber gloves and safety goggles and or face shield when handling Ice Machine Cleaner or Part Number 80 1479 3 10 10 19 CLEANING amp SANITIZING PROCEDURE Ice machine cleaner is used to remove lime scale or other mineral deposits Sanitizer is used to remove algae or slime Step 1 Mix 4 liters of water with 500 ml of cleaner in a plastic or stainless container Cleaner Water 500 ml 16 oz 41 1 gal Step 2 Set the toggle switch to the OFF position at the end of a Harvest Cycle after ice releases from the evaporator Or set the switch to the OFF position and allow the ice to melt off the evaporator Step 3 Remove all ice from the bin Caution Never use anything to force ice from the evaporator Damage may result Step 4 Remove all parts as described in the Component Identification amp Removal section Step 5 Take all components 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
52. er system problems must be identified and eliminated prior to replacing refrigeration components Water area evaporator is dirty Clean as needed Water inlet pressure not between 1 4 and 5 5 bar e Install a water regulator valve or increase the water pressure Incoming water temperature is not between 1 79C and 32 2 C f too hot check the hot water line check valves other store equipment Water filtration is plugged if used e Install a new water filter Hoses fittings etc are leaking water e Repair replace as needed Water inlet valve is stuck open or closed e Clean replace as needed Water is spraying out of the sump trough area e Stop the water spray Uneven water flow across the evaporator e Clean the ice machine Part Number 80 1479 3 10 10 51 Ice Production Check The amount of ice a machine produces directly relates to the operating water and air temperatures This means an ice machine with 20 C outdoor ambient temperature and 10 0 C water produces more ice than the same model ice machine with a 32 C outdoor ambient and 21 water 1 Determine the ice machine operating conditions Air temp entering condenser 3 Air temp around ice machine x Water temp entering sump trough 2 2 Refer to the appropriate 24 Hour Ice Production Chart 3 Use the operating conditions determined in Step 1 to find published 24 hr ice production e Times are in minutes Example 1 min 15 sec con
53. f as a Note provides you with simple but useful extra information about the procedure you are performing Read These Before Proceeding Caution Proper installation care and maintenance are essential for maximum ice production and trouble free operation of your Manitowoc Ice Machine If you encounter problems not covered by this manual do not proceed contact Manitowoc 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 We reserve the right to make product improvements at any time Specifications and design are subject to change without notice 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 contains refrigerant charge Installation and Servicing must be performed by a properly trained refrigeration technician aware of the Dangers of dealing with refrigerant charged equipment This Page Intentionally Left Blank Table of Contents General Information Model 1 Installation Location of Ice 3 Water 4 Electrical Requirements 5 Ele
54. ign 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 14 Part Number 80 1479 3 10 10 Water Curtain The water curtain is designed to keep the spraying water from escaping the evaporator compartment Removal of the bin door is not required but enhances access 1 Grasp one end of the ice curtain and lift up 2 Pivot water curtain and disengage remaining end 3 To re install into ice machine grasp one end of the water curtain install one end pivot the opposite end and pull down into position Make sure tabs are secure in grooves Water Curtain Part Number 80 1479 3 10 10 15 Chute The chute is positioned over the spray nozzles and allows the ice to easily fall into the bin It must be firmly positioned over the Spray Bar Assembly with the front edge inside 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 16 Part Number 80 1479
55. ir Temp Entering Freeze Cycle Harvest Cycle Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 7 24 4 83 1 38 0 2 76 3 45 1 72 2 76 20 11 38 6 89 1 72 0 34 3 45 5 51 2 76 4 14 43 20 68 13 79 2 76 0 69 4 14 9 30 4 14 6 89 pressures are in bar Suction pressure drops gradually throughout the freeze cycle 0LL LLL EC30 SERIAL BREAK NOT AVAILABLE SELF CONTAINED AIR COOLED LARGE CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Freeze Time Entering Water Temperature Harvest Condenser Time C 10 15 20 25 30 35 40 10 24 5 26 4 15 28 8 31 0 29 8 32 1 20 32 0 34 4 33 2 35 7 34 6 37 1 36 0 38 6 37 5 40 3 25 37 5 40 3 44 9 48 2 39 1 42 0 40 9 43 9 42 8 46 0 2 5 min 30 42 8 46 0 44 9 48 2 47 2 50 7 47 2 50 7 49 8 53 4 52 6 56 4 55 7 59 7 35 55 7 59 7 59 2 63 4 63 1 67 6 63 1 67 6 67 5 72 3 40 78 5 84 0 85 3 91 3 93 4 99 9 45 103 1 110 3 114 9 122 9 129 7 138 0 Times in minutes Continued on next page 211 EC30 SERIAL BREAK NOT AVAILABLE SELF CONTAINED AIR COOLED LARGE CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 38 15 33 32 20 30 29 28 27 26 25 26 22 25 24 23 30 23 22 21 21 20 19 18 35 18 17
56. is seized Replace the compressor If the pressures move the compressor is turning slowly and is not seized Check the capacitors and relay 34 Part Number 80 1479 3 10 10 DIAGNOSING START COMPONENTS If the compressor attempts to start or hums and trips the overload protector check the start components before replacing the compressor Capacitor Visual evidence of capacitor failure can include a bulged terminal end or a ruptured membrane Do not assume a capacitor is good if no visual evidence is present A good test is to install a known good substitute capacitor Use a capacitor tester when checking a suspect capacitor Clip the bleed resistor off the capacitor terminals before testing 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 the compressor motor RPM increases the run winding current draw and relay coil magnetism decrease allowing the contacts to open Replace a suspect relay with a known good relay or use a momentary switch and start capacitor to mimic relay operation Part Number 80 1479 3 10 10 35 Timer Models WATER PUMP WON T RUN No Timer Models 1 Toggle switch terminals 2 amp 1 closed wires 64 amp 3 2
57. l 24 Hours 478 744 2283 Water regulating valve set to maintain 9 bar discharge pressure Operating Pressures Water Temperature Freeze Cycle Harvest Cycle Entering Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 10 34 8 62 1 79 28 3 10 5 87 2 07 3 45 20 11 03 8 62 1 79 34 3 10 7 24 2 07 4 82 25 11 03 8 62 1 79 41 3 10 7 24 2 07 4 82 32 11 03 8 62 2 00 41 3 10 7 24 2 07 4 82 43 11 72 8 62 2 00 48 3 45 8 62 2 07 5 87 Set water regulating valve to 9 bar 5 minutes into freeze cycle All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 40 SELF CONTAINED WATER COOLED LARGE CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Around Freeze Time Ice Machine Water Temperature C Harvest Time 10 15 20 25 30 35 40 10 30 8 33 1 15 32 2 34 5 34 5 36 9 20 33 7 36 1 35 3 37 8 38 0 40 7 41 1 44 0 44 8 47 9 25 34 5 36 9 39 0 41 8 40 1 42 9 43 5 46 5 47 5 50 8 SE 30 36 2 38 7 39 0 41 8 42 3 45 2 46 1 49 3 50 6 54 1 56 0 59 9 62 6 66 9 35 44 8 47 9 49 0 52 4 52 3 55 9 58 1 62 0 65 2 69 6 40 56 0 59 9 62 6 66 9 70 9 75 7 45 60 3 64 4 67 9 72 5 77 7 82 9 Times in minutes Continu
58. l Start Up PRIMING WATER SYSTEM Models built July 2010 or later Place the toggle switch in the wash fill position the water fill valve and water pump energize Wait 90 seconds for the water system to fill then place the toggle switch in the ice position Models built before July 2010 The water inlet valve energizes in the harvest sequence therefore priming the system with water will allow the system to start up with a full reservoir of water To prime system remove water curtain and add 2 liters of water into the water trough Continued Next Page Part Number 80 1479 3 10 1025 1 Turn the toggle switch to ON The compressor and water pump will energize starting the freeze cycle The pump sprays water into the inverted cups The water freezes layer by layer until an ice cube forms in each cup At the same time the compressor starts the condenser fan motor air cooled models is supplied with power throughout the freeze and harvest cycles The freeze cycle continues and the evaporator thermostat reaches the adjusted set point e No Timer A harvest cycle starts e Mechanical Timer The thermostat energizes the timer motor and the cam starts to turn When the cam cycles through the preset freeze time the relays change position and the harvest cycle is initiated e SCR Timer The thermostat energizes the time delay relay When the timer reaches setpoint 11 5 minute factory setting the harvest c
59. le A small amount of leakage will cause increased freeze times As the amount of leakage increases the length of the freeze cycle increases Refer to the Parts Manual for proper valve application If replacement is necessary use only original Manitowoc replacement parts 74 Part Number 80 1479 3 10 10 Use the following procedure and table to help determine if a hot gas valve is remaining partially open during the freeze cycle 1 Wait five minutes into the freeze cycle 2 Feel the inlet of the hot gas valve 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 3 Feel the compressor discharge line Warning The inlet of the hot gas valve and the compressor discharge line could be hot enough to burn your hand Just touch them momentarily 4 Compare the temperature of the inlet of the hot gas valves to the temperature of the compressor discharge line Part Number 80 1479 3 10 10 75 Examples of hot gas valve inlet compressor discharge line temperature comparison Findings Comments The inlet of the hot gas valve is cool enough to touch and the compressor discharge line is hot This is normal as the discharge line should always be too hot to touch and the hot gas valve inlet although too hot to
60. let valve e No Refer to SCR timer diagnostics HOT GAS SOLENOID TIME DELAY RELAY WATER INLET SOLENOID 48 Part Number 80 1479 3 10 10 ICE MACHINE PREMATURELY 5 5 SCR Timer 1 Line voltage at hot gas valve No Replace hot gas valve 2 Line voltage at NO and 2 terminals on SCR timer 3 Line voltage at 6 amp 2 on SCR timer e No Replace SCR timer 1 HOTGAS SOLENOID TIME DELAY RELAY WATER INLET SOLENOID Part Number 80 1479 3 10 10 49 ICE MACHINE WILL HARVEST SCR Timer 1 Check for line voltage at terminals 1 amp 2 and C amp 2 If line voltage is not present refer to toggle switch diagnostics 2 Check for line voltage at 2 amp 6 No line voltage Refer to evaporator thermostat diagnostics Evaporator temperature must be below setpoint e Line Voltage Momentarily disconnect then reconnect power to 6 3 Wait 11 minutes e Ice machine cycles into harvest Refer to evaporator thermostat diagnostics The evaporator thermostat must open the trigger contact 6 to reset the freeze cycle time If power is not broken at 6 the ice machine will remain in the freeze cycle and never initiate a harvest cycle e Ice machine remains in freeze Replace timer 50 Part Number 80 1479 3 10 10 Water System Checklist A water related problem often causes the same symptoms as a refrigeration system component malfunction Wat
61. n 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 56 Part Number 80 1479 3 10 10 Procedure Step Example Using ECS040A Model Ice Machine 1 Determine the ice machine operating conditions Air temp entering condenser 32 C Water temp entering water fill valve 21 2A Refer to Cycle Time and Operating Pressure charts for ice machine model being checked Using operating conditions from Step 1 determine published cycle time and published freeze cycle suction pressure 40 minutes Published Freeze cycle time 1 94 to 41 bar Published Freeze cycle suction pressure 2B Compare the published cycle time and published freeze cycle suction pressure Develop a chart Published Freeze Cycle Time minutes 1 20 40 1 94 1 17 4 Published Freeze Cycle Suction Pressure bar In the example the proper suction pressure should be approximately 1 94 bar at 1 minute 1 17 bar at 20 minutes etc 3 Perform an actual suction pressure check at the beginning middle and end of the freeze cycle Note he times at which the readings are taken Manifold gauges were connected to the example ice machine and suction pressure readings t
62. ness at the proper size and weight Allow the ice machine to operate for three complete cycles The cubes should have a small dimple in the center Cycle times vary according to surrounding air and water inlet temperatures If cubes are not full large dimple turn evaporator thermostat one increment towards the right to increase cube size Allow ice machine to complete three cycles then check cubes If cubes are too full no dimple turn evaporator thermostat one increment towards the left to decrease cube size Allow ice machine to operate three complete cycles then check cubes CONTROLLO GHIACCIO ICE CONTROL EIS KONTROLLE GLACE CONTROLE CONTROL DE HIELO Ice Cube Adjustment 28 Part Number 80 1479 3 10 10 CUBE 5 The standard cube has an average weight of 19 grams and the large cube has an average weight of 32 grams Notice the normal dimple in the center of the cube Part Number 80 1479 3 10 1029 30 This Page Intentionally Left Blank Part Number 80 1479 3 10 10 Troubleshooting Models ICE MACHINE WILL NOT RUN Nothing on the ice machine will operate compressor water pump condenser fan motor If any component runs this procedure can be skipped move on to the next diagnostics 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 plac
63. on Manitowoc ice machines are manufactured to Manitowoc specifications The difference between a Manitowoc drier and an off the shelf drier is in filtration A Manitowoc drier has dirt retaining filtration with fiberglass filters on both the inlet and outlet ends This is very important because ice machines have a back flushing action that takes place during every harvest cycle A Manitowoc filter drier has a very high moisture removal capability and a good acid removal capacity Important The liquid line drier is covered as a warranty part The liquid line drier must be replaced any time the System is opened for repair 85 TOTAL SYSTEM REFRIGERATION CHARGE Important This information is for reference only Refer to the ice machine serial number tag to verify the system Water Cooled charge Serial plate information overrides information listed on this page Model a Refrigerant Type ARA 160 or 180 R134A Nec 160 or 180 R134A We 130 or 160 R134A PRE 170 or 180 R134A a 170 R134A PF 230 R134A e 200 R134A Noon 250 R134A M cun 210 R134A 230 R404A a om 200 R404A o 250 R404A 080 ES Y 86 This Page Intentionally Left Blank 87 This Page Intentionally Blank 88 Cycle Times 24 Hour Ice Production and Refrigerant Pressure Charts These charts are used as guidelines to verify correct ice machine operation
64. on average ice weight of 1 49 1 58 kg per cycle Individual cube weight 32 grams 1 Number of individual cubes per cycle 48 44 EC80 SELF CONTAINED AIR COOLED LARGE CUBE Continued Operating Pressures Air Temp Entering Freeze Cycle Harvest Cycle Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 13 79 9 65 3 45 1 59 6 89 8 27 4 48 5 17 20 13 79 17 24 4 48 1 72 9 65 11 38 5 86 6 89 25 18 62 14 48 4 48 1 79 11 03 12 41 6 89 8 27 32 21 37 17 24 4 69 2 07 12 41 15 17 7 58 10 00 43 26 20 22 75 5 17 2 48 13 79 17 24 9 30 12 07 All pressures are in bar Suction pressure drops gradually throughout the freeze cycle 94 EC80 SELF CONTAINED WATER COOLED STANDARD CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Around Freeze Time Ice Machine Water Temperature C Harvest Time 10 15 20 25 30 35 40 10 16 2 18 3 15 16 4 18 6 18 2 20 6 20 16 7 18 9 18 2 20 6 20 0 22 5 220 248 25 0 28 1 25 17 0 19 2 18 9 21 3 20 3 22 9 22 5 25 3 25 0 28 1 30 17 0 19 2 18 5 20 9 20 3 22 9 22 5 25 3 25 0 28 1 28 1 31 6 32 0 35 8 35 20 7 23 4 22 9 25 8 25 6 28 8 28 8 32 3 32 9 36 8 40 25 6 28 8 29 6 33 2 33 8 37 9 45 26 2 29 4 29 6 33 2 33 8 37 9 Time
65. osed 2 3 Open 5 4 Open 5 6 Closed WASH 2 3 Closed 2 1 Open 2 3 Open 2 1 Open OFF 5 6 Open 5 4 Open Replace the toggle switch if ohm readings do not match all three switch settings Part Number 80 1479 3 10 10 63 BIN THERMOSTAT Function The bin thermostat stops the ice machine when the bin is full When ice cubes contact the bin thermostat bulb holder the bin thermostat opens and stops the ice machine When ice cubes no longer contact the bin thermostat bulb holder the bin thermostat closes and the ice machine starts Specifications Control Setting Cut in 4 5 C Cut out 1 0 C Bin Thermostat Check Procedure Warning Disconnect electrical power to the entire ice machine before proceeding Make sure bulb is inserted correctly 35 5 cm in the bulb well Disconnect the wires from the bin thermostat and check the resistance across the terminals No Ice on Bulb Ice on Bulb Result Closed O Open OL Thermostat good Replace Open OL Closed O arabe rt NOTE After covering uncovering the bulb holder with ice wait at least three minutes to allow the thermostat to react Open Close 64 Part Number 80 1479 3 10 10 EVAPORATOR THERMOSTAT Function Mechanical Timer Energizes the timer motor when the evaporator temperature drops below the control set point SCR Timer Supplies and removes power to SCR trigger No Timer Initiates and
66. ounting screws 4 One time adjustment the timer does not need to be readjusted for summer winter operation Part Number 80 1479 3 10 10 69 S C R TIMER Silicon Rectifier S C R Switch Function Extends the length of the freeze cycle after the evaporator thermostat closes initiates and terminates the harvest cycle Settings Dom delay on make dial indicates minutes and determines the additional length of freeze time after the evaporator thermostat closes Factory setting is 11 minutes SS single shot time dial indicates minutes and determines the length of the harvest cycle Factory setting is 3 minutes NOTE The evaporator thermostat must open the trigger contact 6 to reset the freeze cycle time If power is not broken at terminal 6 the ice machine will remain in the freeze cycle and never initiate a harvest cycle Operation e Total freeze cycle time the time it takes to close the evaporator thermostat plus 10 minutes e Total harvest time the setting on the timer SS dial DURING THE FREEZE CYCLE After the evaporator thermostat closes the timer is supplied with power The ice machine remains in freeze until the timer reaches the setpoint time Contacts 6 amp NO normally open on the timer close to supply power to the hot gas and water inlet valves DURING THE HARVEST CYCLE The ice machine remains in harvest until the timer reaches the setpoint time 70 Part Number 80 1479 3 10 10
67. p Freeze Time Entering Water Temperature C Harvest Condenser Time c 10 15 20 25 30 35 40 10 26 1 28 1 15 28 8 31 0 29 8 32 1 20 33 2 35 7 34 6 37 1 36 0 38 6 36 0 38 6 37 5 40 3 25 39 1 42 0 40 9 43 9 40 9 43 9 42 8 46 0 44 9 48 2 3 5 min 30 47 2 50 7 47 2 50 7 49 8 53 4 52 6 56 4 55 7 59 7 55 7 59 7 59 2 63 4 35 63 1 67 6 67 5 72 3 67 5 72 3 72 6 77 8 78 5 84 0 40 93 4 99 9 103 1 110 3 114 9 122 9 45 148 7 159 0 174 1 186 1 174 1 186 1 Times in minutes Continued on next page 90 EC30 SELF CONTAINED AIR COOLED LARGE CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 36 15 33 32 20 29 28 27 27 26 25 25 24 24 23 22 30 21 21 20 19 18 18 17 35 16 15 15 14 13 40 11 10 9 45 7 6 6 Based on average ice weight of 0 74 0 79 kg per cycle Individual cube weight 32 grams 1 Number of individual cubes per cycle 24 EC30 SELF CONTAINED AIR COOLED LARGE CUBE Continued Operating Pressures Air Temp Entering Freeze Cycle Harvest Cycle Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 9 65 5 17 1 38 0 2 16 4 48 1 72 3 10 20 15 86 7 58 2 07 0 4 14 6 55 2 76 4 83 43 25 51 14 48 2 76 0 69 4 14 10 0 4 83 8 27 All pressures are in bar Suction pressure drops gradually throughout the freeze c
68. r Cooled Standard Cube EIN 90 EC20 With Timer Self Contained Air Cooled Standard 93 EC20 With Timer Self Contained Air Cooled Large 96 EC20 Without Self Contained Air Cooled Standard 99 EC30 Self Contained Air Cooled Standard Cube T 102 EC30 Self Contained Air Cooled Large Cube EE 105 EC30 Serial Break not available Self Contained Air Cooled Standard Cube 108 EC30 Serial Break not available Self Contained Air Cooled Large Cube 111 EC40 Self Contained Air Cooled Standard Cube Hage RENE abv otek Naa OR EUM eed e ck Ja 114 CUBE A cet Sep a a 120 EC40 Self Contained Water Cooled Large Cube DII DENEN 123 EC50 Self Contained Air Cooled Standard Cube Bette Ro tuo Seles Saket rien Ee ol ded 126 EC50 Self Contained Air Cooled Large Cube VERUM cx e mese ce AMI ceti 129 EC50 Self Contained Water Cooled Standard CUBE utis lA ck Gat c vt 132 EC50 Self Contained Water Cooled Large Cube T ERE EET 135 EC65 Self Contained Air Cooled Standard Cube Sy peeing AOL gs depre ao D EN IO E e RUE 138 EC65 Self Contained Air Cooled Large Cube KE 141 EC65 Self Contained Water
69. res Water Temperature Entering Condenser C Freeze Cycle Harvest Cycle Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 15 86 15 51 4 55 1 93 6 89 10 00 5 52 6 89 20 15 86 15 51 4 83 1 93 7 58 10 68 6 21 7 93 25 15 86 15 51 4 83 1 93 7 58 10 68 6 21 7 93 32 16 20 15 86 4 83 2 00 7 93 11 03 6 89 8 27 43 17 24 16 20 5 17 2 14 8 27 12 41 7 58 8 96 Set water regulating valve to 15 9 bar 5 minutes into freeze cycle All pressures are in bar Suction pressure drops gradually throughout the freeze cycle zbl EC65 SELF CONTAINED WATER COOLED LARGE CUBE NOTE These characteristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Around Freeze Time Ice Machine Water Temperature C Harvest Time 10 15 20 25 30 35 40 10 32 9 35 1 15 33 5 35 7 348 371 20 34 1 36 4 35 5 37 9 37 0 39 4 38 6 41 1 39 4 42 0 25 35 5 37 37 0 39 4 37 8 40 3 39 4 42 0 40 3 42 9 wie 30 36 2 38 6 37 8 40 3 38 6 41 1 40 3 42 9 42 2 449 43 1 46 0 45 3 48 2 35 40 3 42 9 41 2 43 9 43 1 46 0 45 3 48 2 46 4 49 4 40 44 2 47 1 46 4 49 4 47 6 50 7 45 45 3 48 2 47 6 50 7 50 1 53 4 Times in minutes Continued on next page 8t EC65 SELF CONTAINED WATER COOLED LARGE CUBE Continued 24 Hour Ice
70. s in minutes 74 80 SELF CONTAINED WATER COOLED STANDARD CUBE Continued 24 Hour Ice Production Air Temp Around Ice Water Temperature C Machine C 10 15 20 25 30 35 40 10 74 15 73 67 20 72 67 62 57 51 25 71 65 61 56 51 30 71 66 61 56 51 46 41 35 60 55 50 45 40 40 50 44 39 45 49 44 39 Based on average ice weight of 1 01 1 12 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 56 Continued on next page 84 80 SELF CONTAINED WATER COOLED STANDARD CUBE Continued Condenser Water Consumption 32 Air Temperature Around Ice Machine Water Temperature 15 21 32 Gal 24 Hours 781 1480 8893 Water regulating valve set to maintain 15 9 bar discharge pressure Operating Pressures Water Temperature Freeze Cycle Harvest Cycle Entering Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 15 86 15 51 4 14 2 00 8 27 10 68 5 52 6 89 20 15 86 15 51 4 14 2 00 8 96 12 41 6 21 8 27 25 15 86 15 51 4 14 2 00 8 96 12 41 6 21 8 27 32 15 86 15 51 4 48 2 07 8 96 12 41 6 55 8 27 43 17 24 16 20 4 48 2 07 8 96 12 41 6 89 8 96 Set water regulating valve to 9 bar 5 minutes into freeze cycle All pressures are in bar Suction pres sure drops gradually throughout the freeze cycle 64
71. sh 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 16 Replace sump drain over flow tube and transfer remaining 2 liters of solution to the sump trough Replace all components Step 17 To start a sanitizing cycle set the toggle switch to the WASH FILL position Step 18 After 10 minutes set the toggle switch to the OFF position Remove water curtain and ice chute Remove over flow tube from water sump and allow all water to drain from sump Replace drain plug and fill sump with 2 liters of water Set toggle switch to WASH FILL and circulate for 10 minutes Step 19 After 10 minutes set toggle switch to off position Remove water curtain ice chute water sump over flow tube Drain water from sump and replace tube Step 20 Replace all parts Connect the incoming ice making water line Step 21 Place toggle switch to the WASH FILL for 90 seconds and then to ice position ice machine will go into ice making cycle 22 Part Number 80 1479 3 10 10 EXTERIOR CLEANING Clean the area around the ice machine as often as necessary to maintain cleanliness and efficient operation Sponge any dust and dirt off the outside of the ice machine with mild soap and water Wipe dry with a clean soft cloth A commercial grade stainless steel cleaner and polish may be used REMOVAL FROM SERVICE WINTERIZATION GENERAL Special
72. soak in solution for 15 20 minutes Rinse all components with clean water 20 Part Number 80 1479 3 10 10 Step 6 While components soaking use nylon brush to scrub inside of ice bin Scrub inside of door door track bin sump trough and evaporator moldings With clean water rinse all of these areas thoroughly Step 7 Replace sump overflow tube and pour remaining 2 liters of mixture into the water sump Replace all parts Step 8 Disconnect the incoming ice making water line Step 9 To start a cleaning cycle set the toggle switch to the WASH FILL position Step 10 After 10 minutes set the toggle switch to the OFF position Remove water curtain ice chute and over flow tube from the water sump Allow all water to drain from the sump Replace drain plug and fill sump with 2 liters of water Set toggle switch to WASH FILL and circulate for 10 minutes Step 11 After 10 minutes set toggle switch to off position Remove water curtain ice chute water sump over flow tube Drain water from sump and replace tube Step 12 Mix 60 ml of sanitizer with 12 of water in a plastic or stainless steel container Sanitizer Water 60 ml 2 oz 121 8 gal Part Number 80 1479 3 10 10 21 Step 13 Remove Water Curtain and Ice Chute Step 14 Take all components to sink and with 10 liters Sanitizer Water mixture sanitize all components with a soft nylon brush or cloth Do not rinse components Step 15 Use bru
73. suction service valve if necessary NOTE Manifold 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 the low side of the system d Allow the pressures to equalize while the ice machine is in the freeze cycle e Disconnect the low side service valve at the ice machine 9 Install the caps on the refrigeration access valves 79 SYSTEM CONTAMINATION CLEANUP General This section describes the basic requirements for restoring contaminated systems to reliable service 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 DETERMINING SEVERITY OF CONTAMINATION System contamination is generally caused by either moisture or residue from compressor burnout entering the refrigeration system Inspection of the refrigerant usually provides the first indication of system contamination Obvious moisture or an acrid odor in the refrigerant indicates contamination If either condition is found or if contamin
74. teristics may vary depending on operating conditions Cycle Times Freeze Time Harvest Time Total Cycle Time Air Temp Freeze Time Entering Water Temperature Harvest Condenser Time C 10 15 20 25 30 35 40 10 18 6 21 2 15 20 3 23 1 21 3 24 1 20 22 3 25 3 24 6 27 9 26 0 29 4 27 5 81 1 30 9 34 9 25 26 0 29 4 27 5 31 1 29 1 32 9 32 9 37 2 35 2 39 7 2 5 min 30 29 1 32 9 30 9 34 9 35 2 39 7 37 8 42 6 40 7 45 9 48 1 54 1 52 8 59 3 35 40 7 45 9 44 1 49 7 52 8 59 3 58 4 65 6 65 3 75 3 40 65 3 73 3 73 9 82 9 99 7 111 7 45 85 0 95 2 120 3 134 7 151 3 169 3 Times in minutes Continued on next page 6 EC20 WITH SELF CONTAINED AIR COOLED STANDARD CUBE Continued 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 28 15 26 25 20 24 22 21 20 18 25 21 20 19 17 16 30 19 18 16 15 14 12 11 35 14 13 11 10 9 40 9 8 6 45 7 5 4 Based on average ice weight of 0 43 0 48 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 24 EC20 WITH SELF CONTAINED AIR COOLED STANDARD CUBE Continued Operating Pressures Air Temp Entering Freeze Cycle Harvest Cycle Condenser C Discharge Pressure Suction Pressure Discharge Pressure Suction Pressure 10 7 24 4 83 1 38 0
75. ther location The location must be indoors The location must be free of airborne and other contaminants The air temperature must be at least 10 C but must not exceed 43 4 C The location must not be near heat generating equipment or in direct sunlight The location must be capable of supporting the weight of the ice machine and a full bin of ice The location must allow enough clearance for water drain and electrical connections in the rear of the ice machine The location must not obstruct airflow through or around the ice machine condenser airflow is in and out the front Refer to the chart below for clearance requirements Self Contained Self Contained Air Cooled Water Cooled Top Sides 203 mm 8 127 mm 5 Back 127 mm 5 127 mm 5 NOTE The ice machine may be built into a cabinet There is no minimum clearance requirement for the top or left and right sides of the ice machine The listed values are recommended for efficient operation and servicing only Part Number 80 1479 3 10 10 WATER SERVICE DRAINS Water Supply Local water conditions may require treatment of the water to inhibit scale formation filter sediment and remove chlorine odor and taste Water Inlet Lines e Do not connect the ice machine to a hot water supply Be sure all hot water restrictors installed for other equipment are working Check valves on sink faucets dishwashers etc e f water pressur
76. touch during harvest should be cool enough to touch after 5 minutes into the freeze cycle The inlet 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 gas valve and the compressor discharge line are cool enough to touch This is an indication something is wrong causing the compressor discharge line to be cool to the touch This is not caused by a hot gas valve leaking 76 Part Number 80 1479 3 10 10 Refrigerant RECOVER EVACUATION CHARGING Normal Procedures Do not purge refrigerant to the atmosphere Capture refrigerant using recovery equipment Follow the manufacturer s recommendations Important Manitowoc 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 liquid line filter drier to prevent voiding the warranty Connections 1 Suction side of the compressor through the suction
77. utes harvest Total freeze cycle time the time it takes to close the evaporator thermostat plus 11 5 minutes e Changing the length of the freeze cycle changes the length of the harvest cycle and vice versa Example 12 minute freeze 3 minute harvest DURING THE FREEZE CYCLE After the evaporator thermostat closes the timer is supplied with power The cam turns and the ice machine remains in freeze until the arm for the micro Switch changes position at the cam lobe DURING THE HARVEST CYCLE The ice machine remains in harvest until the arm for the micro switch changes position at the cam lobe again Part Number 80 1479 3 10 10 67 Mechanical Timer Diagnostics 1 68 Check for line voltage at the timer motor Evaporator thermostat completes timer Motor Circuit If no voltage is present refer to evaporator thermostat diagnostics If timer has voltage and does not move e Check motor windings e If windings are open or have resistance and timer does not move replace timer If timer cam moves e Check micro switch for voltage e Check micro switch for continuity Part Number 80 1479 3 10 10 LOW AMBIENT ADJUSTMENT FOR MECHANICAL TIMER Timer adjustment for operation in temperatures below 10 1 Disconnect power to the ice machine 2 Remove timer adjustment tool from the inside of the control box cover 3 Adjust harvest time to 5 minutes easier access can be obtained by removing the timer m
78. verts to 1 25 min 15 seconds 60 seconds 25 minutes e Weights are in grams 4 Perform an ice production check using the formula below 1 Freeze Time Harvest Time Total Cycle Time 2 1440 Minutes in Total Cycle Cycles per Day 24 Hrs Time 3 x Weight of One Cycles per Day Actual 24 Hour Harvest Production 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 e Another ice machine is required Relocating the existing equipment to lower the load conditions is required 52 Part Number 80 1479 3 10 10 Analyzing Discharge Pressure 1 Determine the ice machine operating conditions Air temp entering condenser Air temp around ice machine Water temp entering sump trough 2 Refer to Cycle Times 24 Hour Ice Production Refrigeration Pressure Chart for ice machine being checked 3 Use the operating conditions determined in Step 1 to find the published normal discharge pressures Freeze Cycle Harvest Cycle Perform an actual discharge pressure check Freeze Cycle Harvest Cycle PSIG PSIG Beginning of Cycle Middle of Cycle End of Cycle 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 pu
79. ycle 401 801 EC30 SERIAL BREAK NOT AVAILABLE 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 Freeze Time Entering Water Temperature C Harvest Condenser Time C 10 15 20 25 30 35 40 10 18 6 21 2 15 20 3 23 1 21 3 24 1 20 22 3 25 3 24 6 27 9 26 0 29 4 27 5 31 1 30 9 34 9 25 26 0 29 4 27 5 31 1 29 1 32 9 32 9 37 2 35 2 39 7 2 5 min 30 29 1 32 9 30 9 34 9 35 2 39 7 37 8 42 6 40 7 45 9 48 1 54 1 52 8 59 3 35 40 7 45 9 44 1 49 7 52 8 59 3 58 4 65 6 65 3 75 3 40 65 3 73 3 73 9 82 9 99 7 111 7 45 85 0 95 2 120 3 134 7 151 3 169 3 Times in minutes 60 EC30 SERIAL BREAK NOT AVAILABLE SELF CONTAINED AIR COOLED STANDARD CUBE Cont 24 Hour Ice Production Air Temp Entering Water Temperature C Condenser C 10 15 20 25 30 35 40 10 28 15 26 25 20 24 22 21 20 18 25 21 20 19 17 16 30 19 18 16 15 14 12 11 35 14 13 11 10 9 40 9 8 6 45 7 5 4 Based on average ice weight of 0 43 0 48 kg per cycle Individual cube weight 19 grams 1 Number of individual cubes per cycle 24 Continued on next page EC30 SERIAL BREAK NOT AVAILABLE SELF CONTAINED AIR COOLED STANDARD CUBE Cont Operating Pressures A
80. ycle is initiated 26 Part Number 80 1479 3 10 10 2 Harvest Cycle The compressor continues to operate and the water pump is de energized The hot gas valve energizes allowing hot gas to enter and warm the evaporator The water valve is also energized aiding with harvest as well as filling up the sump with fresh water for a new freeze cycle The ice falls from the cups and is directed into the bin by the ice chute The harvest cycle continues until No Timers The evaporator thermostat changes position e Mechanical Timer The preset harvest time expires The hot gas valve and water valve de energize If ice cubes are not contacting the bin thermostat a new freeze cycle is initiated as the water pump energizes and sprays water into the cups e SCR Timer The timer reaches the factory setting of 3 minutes 3 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 one minute of continuous ice contact with the bin thermostat probe The ice machine remains off until enough ice has been removed from the storage bin to allow the ice to fall clear of the bin thermostat probe As the ice clears the probe the bin thermostat warms up and the machine starts another freeze cycle Part Number 80 1479 3 10 1027 ICE CUBE THICKNESS CHECK The ice cube thickness is factory set to maintain the ice cube thick
81. zed open during the harvest cycle The valve is positioned between the compressor and the evaporator and performs two functions 7 Prevents refrigerant from entering the evaporator during the freeze 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 release of the ice slab Exact pressures vary according to ambient temperature and ice machine model Harvest pressures can be found in the Cycle Time 24 Hour Ice Production Refrigerant Pressure Charts in this book Part Number 80 1479 3 10 10 73 Hot Gas Valve Analysis The valve can fail in two positions e Valve will not open in the harvest cycle e Valve remains open during the freeze cycle VALVE WILL NOT OPEN IN THE HARVEST CYCLE Although the coil is energized in the harvest cycle the evaporator temperature pressure remains unchanged from the freeze cycle VALVE REMAINS 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 cyc

ManitowocIce.com

Contents

Download Pdf Manuals

Related Search

Related Contents