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Ice Machine Service Handbook for Products

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1. 90 70 B series New water cooled condenser wd FME2404 AutoSentry model Air water or remote Production began in March 2000 Ice production 2455 to 1780 Ib 24 hr Air cooled water use 216 gallons Water use water cooled 1333 gallons condenser only BTUs per hour 15 800 RL BTUH for cond unit sizing 12000 11800 Refrigerant type R 404A Refrigerant charge Air cooled 36 oz Water cooled 24 oz Remote air cooled 208 OZ Refrigerant pressures Air cooled 315 hi 32 low Water cooled 245 hi 32 low Remote 180 hi minimum 28 38 low Metering device TXV superheat 6 to 8 F 90 70 There are two refrigeration systems in the FME2404 similar to the NME1854 B series New water cooled condenser T a HD22 and HD30 New in 2004 Hotel ice dispensers Replaced HD356 and HD156 Agitation 3 seconds every 6 hours Drive system HP gear drive HD22 compatible with CME306 or CME456 cubers HD33 compatible with CME256 or CME506 cubers Voltage 115 73 MAR1400 and MAR2000 Industrial Flaker Remote Low Side Production began 2001 Ice production MAR1400 1260 to 1430 Ice production MAR2000 1700 to 1980 BTUs per hour MAR1400 19 000 BTUs per hour MAR2000 26 000 Refrigerant type
2. Max times 50 freeze 14 harvest Refrigerant AC 32 WC 27 24 Remote 232 charge w ERC201 280 w ERC402 Air Cooled Suction at the end of freeze 26 PSIG refrigerant Suction peak in harvest 84 88 PSIG pressures Discharge 5 minutes into freeze 215 290 Water cooled freeze cycle set at 245 PSIG Metering device TXV plus distributor superheat 6 to 8 Average comp 13 amps Batch Weight 6 5 7 Ib Cycle time 13 15 90 70 Air cooled Panel changes C andE series D series has PTCR F series had we condenser change 31 CME810 New in 2002 Remote low side cuber Part of Eclipse system Use with CP886 and ERC680 or CP1086 and ERC1086 Ice production 800 775 to 695 1000 880 to 850 Ib 24 hours Water use min 800 Ib 104 gal 1000 Ib 127 gal BTUs per hour w CP886 13 000 w CP1086 19 000 Max times 40 freeze 15 harvest Refrigerant w CP886 232 oz w CP1086 272 oz charge Charge listed on CP unit not CME R 404A Refrigeration pressures 70 70 50 Suction at end of freeze w CP886 26 32 PSIG w CP1086 24 to 30 PSIG Discharge 220 to 240 90 90 70 Suction at end of freeze w CP886 30 36 PSIG w CP1086 26 to 32 PSIG Discharge 230 to 260 120 110 100 Suction at end of freeze w CP886 36 42 PSIG w CP1086 32 to 36 PSIG Discharge 350 to 375 Metering device
3. Metering device TXV Batch weight 3 8 Ib Cycle time 16 17 minutes 90 70 Remote is 208 230 volt Hot gas valve changed in March 1997 see PS 10 97 109 TDE470 New model in 1995 Touch Free version of the FDE470 flaker dispenser Production discontinued June 2001 Ice production 470 to 280 Ib 24 hours Water use 49 gallons per 24 hours BTUs per hour 7700 Refrigerant type R 134a Refrigerant charge 14 oz Refrigerant pressures 135 175 hi 13 14 low Metering device Cap tube Average amps 12 8 vending 90 70 110 TDE550 or TDE650 Ice Maker Dispenser R 404A and Touch Free dispensing Production between in October 1994 and June 2001 Ice production 605 380 Ib Water use ice only 56 gallons Water use water cooled 558 gallons condenser only BTUs per hour 9200 Refrigerant type R 404A Refrigerant charge Air cooled 24 ounce Water cooled 18 oz Refrigerant pressures 250 220 high 38 low Water cooled discharge pressure should be 245 PSIG Metering device TXV Average amps 90 70 10 13 111 SLIM LINE Electrical Sequence SLC or SLE cubers are controlled by three thermostats e Ice thickness e Harvest termination e Bin level All must be in position and operate properly for the mach
4. Cycle time 90 70 16 20 minutes 48 CMS1402 Modular Cuber Air water or remote air cooled Production began 4 91 ended 3 95 B model with 2 front panels in early 1992 Ice production 1450 to 1036 Ib 24 hr Air cooled water use 187 gallons per 24 hours Water use water cooled condenser only 1648 gallons per 24 hours BTUs per hour 24000 Refrigerant type R 22 Refrigerant charge Air cooled 60 oz water cooled 64 remote 256 oz Refrigerant pressures 265 hi 22 low just before harvest Metering device TXV plus distributor superheat 6 to 8 F Average amps 14 15 Cube count per cycle 995 Water solenoid valve 1 g p m flow rate Batch Weight 13 5 14 5 Ib Cycle time 14 18 minutes 90 70 49 CS0415 New model in 2007 Replaces CSW45 Ice production 40 36 Ib 24 hr Water use 75 gallons per 24 hours BTUs per hour 1600 Refrigerant type R 134a Refrigerant charge 6 5 oz Refrigerant pressures end of the freeze cycle Low Side 1 4 at 70 60 2 6 at 100 80 High Side 65 80 at 70 60 85 105 at 100 80 Metering device Cap tube Power consumption 250 300 watts Water solenoid valve flow rate 25 g p m Flow meter in valve Cycle time 18 22 minutes at 70 60 30 38
5. 63 lt FM1202 Modular flaker Air water or remote air cooled In production 1993 thru early 1994 Ice production min 787 b 24 hr Ice production max 1206 Ib 24 hr Air cooled water use 113 gallons per 24 hours Water use water cooled 679 gallons per 24 hours condenser only BTUs per hour 10900 Refrigerant type R 22 Refrigerant charge Air cooled 32 oz Water cooled 28 oz Remote air cooled 256 OZ Refrigerant Pressures Air cooled 180 hi 25 low 70 50 Water cooled 220 hi 25 low Refrigerant pressures Air cooled 240 hi 25 low 90 70 Water cooled 220 hi 25 low Metering device TXV superheat 6 to 8 F Compressor amps 4 8 Average amps 7 Note FM2402 uses 2 FM1202 chassis in one cabinet 64 FME504 New model in 2007 Same chassis as FME804 Ice production 400 Ib 24 hr Air cooled water use 48 gallons Water use water cooled 285 gallons condenser only BTUs per hour 5700 Refrigerant type R 404A Refrigerant charge Air cooled 22 oz Water cooled 18 oz Refrigerant pressures Air cooled 315 hi 34 low Water cooled 245 hi 34 low Metering device TXV superheat 6 to 8 F Average comp amps 8 1 90 70 65 FME800 HP62 R 404A model Air water or remote Production 1994 to 2000
6. New model in 2007 Replaces CSE60 Ice production 72 to 44 Ib per 24 hours Water use 24 gallons per 24 hours BTUs per hour 2400 Refrigerant type R 134a Refrigerant charge 9 5 oz Refrigerant pressures freeze End of freeze 125 to 130 PSIG discharge 1 3 PSIG suction Refrigeration pressures harvest 83 125 PSIG discharge 120 PSIG max suction Metering device Cap tube Compressor amps freeze 4 3 to 3 6 Cubes per cycle 24 Batch weight 116 1 oz Water solenoid valve flow 21 g p m rate Cycle time 90 70 20 25 minutes 57 DC33 Cuber with bin one cube size air cooled only Designed for home use In production since 1980 replaced by DCE33 R 134a unit in 1995 Ice production 30 18 Ib 24 hours Water use 20 gallons per 24 hours BTUs per hour 1400 Refrigerant type R 12 Refrigerant charge 502 Refrigerant pressures 5 low just before harvest Metering device Cap tube Average amps 4 Cubes per cycle 8 Water solenoid valve flow 22 g p m rate Cycle time 25 minutes Similar to DC30 New drain pump in 1995 58 DCE33 Cuber with bin one cube size air cooled only Designed for home use In production since 1995 Ice production 30 18 Ib 24 hours
7. AFE325 R 134a self contained undercounter flaker Production began October 1994 Ice production 324 to 218 Ib per 24 hours Water use 33 gallons per 24 hours BTUs per hour 3000 Refrigerant Type R 134a Refrigerant charge 11 02 Refrigerant pressures 7 10PSIG Suction 130 165 PSIG Discharge Metering device Cap tube Average amps 9 90 70 10 AFE400 AFE424 AFE424 replaced AFE400 in 2010 Ice production 400 to 250 Ib per 24 hours Air cooled water use 36 gallons per 24 hours Water cooled only condenser water use 393 gallons per 24 hours BTUs per hour 3000 Refrigerant Type R 134a Refrigerant charge Air cooled 15 oz Water cooled 10 oz Refrigerant pressures 125 160 hi 12 13 low Metering device TXV superheat 6 to 8 F Average amps 9 90 70 11 CD200 Motel Cube Dispenser Production from 1988 to 1998 A B and C models Replaced by HD356 A model No agitation timer B model up to date code 04K No agitation timer but vend sequence changed so that user need not hold vend button in B model after 04K Agitation timer added 12 or 24 hour of no vending would initiate a rotation of the vend rotor B model after 9 96 Timer changed to 2 hour B model aft
8. Scotsman ICE MACHINE SERVICE HANDBOOK SCOTSMAN S ICE MACHINE SERVICE HANDBOOK This booklet is intended as a quick reference for the service technician It will not replace a service manual Not all of Scotsman s models are listed within this book All data listed in this book is subject to change without notice Note Listed air cooled BTUs per hour are for air conditioning loads not condenser sizing Table Of Contents CME1056 CME1202 CME1356 CME1386 CME1402 CME1656 CME1686 AFE325 ne Page 10 a AFE400 11 CD200 lt CMS1002 CM1000 CM1400 CME250 500 CME650 CME256 CME306 CME456 506 CME656 CME686 CME806 CME810 CME855 CME865 CME1000 CME1002 FM1200 FM1202 FME504 FME800 FME804 FME1200 FME1204 FME1500 FME1504 Page 71 FME2404 Page 72 HD22 HD30 73 MAR1400 and MAR2000 74 MCM860 Page 75 MCM1062 Page 76 MCM1462 Page 77 MDT2 lt eee Page 78 MDT3F and MDT4F MDT5N25 and MTD5NA40 Page 80 MDT6N90 Page 81 400 Page 82 MH750 Page 83 ND550 Page 84 ND650 Page 85 ND750 Page 86 NDE550 amp NDE554 Page 87 NDE650 amp NDE65
9. Water solenoid valve flow rate 75 g p m Cycle time 14 18 minutes 90 70 76 MCM1462 Modular Cuber Air water or remote air cooled Production began 1992 ended 3 95 Ice production 1450 to 1036 Ib 24 hr Air cooled water use 187 gallons per 24 hours Water use water cooled condenser only 1648 gallons per 24 hours BTUS per hour 24000 Refrigerant type R 22 Refrigerant charge Air cooled 60 oz water cooled 64 remote 256 oz Refrigerant pressures 265 hi 22 low just before harvest Metering device TXV plus distributor superheat 6 to 8 F Average amps 14 15 Cube count per cycle 995 Water solenoid valve 1 g p m flow rate Batch Weight 13 5 14 5 Ib Cycle time 14 18 minutes 90 70 f MDT2 Ice Maker Dispenser Production began June 2002 Ice form is cubelet Ice production 273 to 198 Ib 24 hours Water use 48 gallons per 24 hours Refrigerant type R 134a Refrigerant charge 13 oz Refrigerant pressures 135 175 hi 13 14 low Metering device Cap tube Average amps 6 90 70 78 MDT3F and MDT4F Ice Maker Dispenser Production began June 2001 Replaces TDE470 Ice production MDT4 470 to 280 Ib 24 hours Ice production MDT3 392 to 294 Ib 24
10. 3 internally equalized TXVs superheat 6 to 8 F Average comp amps Single phase CP886 9 CP1086 11 Three phase CP886 6 CP1086 7 Batch Weight 8 to 10 Ib Cycle time 800 Ib model 1000 Ib model 1 2 min shorter At 70 70 50 17 to 19 minutes At 90 90 70 19 to 21 minutes At 120 110 100 20 to 23 minutes 32 CME855 42 wide R 404A Modular Cuber air cooled only Production began in 1995 replaced the CM855 air cooled replaced by CME806 Ice production 611 16 24 hr Remote air cooled water use 123 gallons per 24 hours BTUs per hour Remote 15500 Refrigerant type R 404A Refrigerant charge 36 oz Refrigerant pressures 195 hi 26 low just before harvest Metering device TXV plus distributor superheat 6 to 8 F Average amps Compressor amps 9 11 Cube count per cycle 600 Water solenoid valve flow 75 g p m rate Batch Weight 8 916 Cycle time 17 18 minutes 90 70 33 CME865 30 wide modular cuber water or remote air cooled R 404A model Production began in 1995 replaced by CME806 Ice production 688 16 24 hr Remote air cooled water use 141 gallons per 24 hours Water use water cooled condenser only 1162 gallons per 24 hours BTUs per hour Remote 15500 Refriger
11. CME1656R and the CME2006R Same results as shown except for tests 5 and 8 add harvest bypass valve delete non remote fan motor s Pump Down Remote models are the CME506R CME656R and the CME806R Same results as shown except for tests 3 no purge valve 4 add liquid line valve 5 and 8 add liquid line valve delete fan motor e Eclipse models are the CME686 CME810 CME1386 CME1686 and the CME2086 Only tests 1 2 and 4 are the same as shown Substitute all refrigeration solenoid valves for hot gas valve in other tests e Water cooled and Eclipse models in test 8 have nothing operating 145 Water Level Sensor Test Column One Float Position Column Two Green Lights On Column Three Jumper Test Over filled or dry Freeze Harvest Unplugging sump float all Clean and Off sensor harness the way up or from 2 on down all of the controller slot is visible Full sump Harvest Clean Jump pins one and Off bottom and two Mid position Clean and Off Jump pins one bottom and three and pins one and two Sump needs refill Off Jump pins one or end of freeze and three Water Level Sensor Test Results f the lights change as listed in column two the system has passed the test e f the test failed perform the jumper test in column three If that test results in the lights on as listed in column two the controller is OK but the s
12. Ice production 700 to 425 Ib 24 hr Water use ice only 82 gallons per 24 hours Water use water cooled 928 gallons per 24 hours condenser only BTUs per hour 9700 Refrigerant type R 502 Refrigerant charge Air cooled 26 ounce Water cooled 28 oz Refrigerant pressures 250 220 high 30 low Metering device TXV superheat 6 to 8 F Average amps 16 5 90 70 86 NDE550 amp NDE554 HP62 R 404A model Air or water cooled Production began in July 1994 Ice production 535 335 Water use ice only 49 Water use water cooled 441 condenser only BTUs per hour 8600 Refrigerant type R 404A Refrigerant charge Air cooled 24 ounce Water cooled 18 oz Refrigerant pressures 250 220 high 40 low Water cooled discharge pressure at 245 PSIG Metering device TXV superheat 6 to 8 F Average amps 10 13 90 70 87 NDE650 amp NDE654 HP62 R 404A model Air or water cooled Production began in July 1994 Ice production 605 380 Ib Water use ice only 56 gallons Water use water cooled 558 gallons condenser only BTUs per hour 9200 Refrigerant type R 404A Refrigerant charge Air cooled 24 ounce Water cooled 18 oz Refrigerant pressures 250 220 high 38 low Water cooled discharge pressure should be 245 PSIG Me
13. Kits Harvest Extender Kit Fits CMS1202 CME1202 CMS1402 and CME1402 Part number A37281 020 Water Valve Repair Kit no coil or frame e White body valves e Blue body valves e Water regulating valves 11 0559 01 3 8 only 12 2636 20 12 2912 01 Hot Gas Valve Kits Alco only Model Valve Complete Coil Part Number Rebuild Kit Part Number CME250 12 2417 22 12 2719 21 12 2733 30 500 12 2417 21 SCE170 11 0475 21 12 2733 20 CME1402 11 0495 21 12 2719 22 12 2733 30 CME1202 CME1202R 11 0494 21 CME1402R CME650 12 2417 23 865 CME855 11 0493 21 CME1002 11 0491 21 CME1000 CME256 SCE275 12 2471 21 12 2719 23 CME306 CME456 12 2471 22 506 CME686 CME656 12 2471 23 CME806 12 2471 24 CME1056 CME1356 11 0507 21 CME1656 CME1386 CME1686 11 0507 22 CME2006 CME810 11 0507 23 CME2086 127 Ice Storage Bin Doors Parts identification usually requires an accurate model number However it is sometimes difficult to locate the model and serial number of an ice storage bin This table is intended to identify the model of the bin by the size of the bin door It applies to Scotsman brand bins only Length Width Bin Model 21 11 SLB150 260 21 15 SLB375 22 16 4 B90 or BX87 29 74 15 350 29 19 555 30 11 1 4 HTB250
14. 430 Ib 24 hr Air cooled water use 62 gallons Water use water cooled 535 gallons condenser only BTUs per hour 9500 Refrigerant type R 404A Refrigerant charge Air cooled 24 oz Water cooled 20 oz Remote air cooled 208 OZ Refrigerant pressures Air cooled 315 hi 34 low Water cooled 245 hi 34 low Metering device TXV 6 8 F superheat Compressor amps 8 9 Gearmotor amps 3 1 3 5 90 70 95 NME654 AutoSentry model Air water or remote Production began March 2000 Ice production 745 430 16 24 hr Air cooled water use 62 gallons Water use water cooled 535 gallons condenser only BTUS per hour 7000 RL BTUH for cond unit 4400 4200 sizing Refrigerant type R 404A Refrigerant charge Air cooled 24 oz Water cooled 20 oz Remote air cooled 208 OZ Refrigerant pressures Air cooled 315 hi 34 low Water cooled 245 hi 34 low Metering device TXV 6 8 F superheat Compressor amps 8 9 Gearmotor amps 3 1 3 5 90 70 B series New water cooled condenser Air flow changed to in the side and out the back in 2006 96 NME950 HP62 R 404A model Air water or remote Production from 1995 to 2000 There are 2 systems in a NME1850 Ice production 1080 625 Ib 24 hr Air c
15. Ice production 760 480 Ib 24 hr Air cooled water use 83 4 gallons Water use water cooled 535 gallons condenser only BTUs per hour 9500 Refrigerant type R 404A Refrigerant charge Air cooled 24 oz Water cooled 20 oz Remote air cooled 208 OZ Refrigerant pressures Air cooled 315 hi 34 low Water cooled 245 hi 34 low Remote 180 hi minimum 30 low Metering device TXV superheat 6 to 8 F Average amps 10 90 70 66 FME804 AutoSentry model Air water or remote Production began in March 2000 Ice production 760 480 Ib 24 hr Air cooled water use 83 4 gallons Water use water cooled 535 gallons condenser only BTUs per hour 6200 Refrigerant type R 404A Refrigerant charge Air cooled 24 oz Water cooled 20 oz Remote air cooled 208 OZ Refrigerant pressures Air cooled 315 hi 34 low Water cooled 245 hi 34 low Remote 180 hi minimum 30 low Metering device TXV superheat 6 to 8 F Average amps 10 90 70 B series New water cooled condenser Air flow changed to in the side and out the back in 2006 67 FME1200 HP62 R 404A model Air water or remote Production from 1995 to 2000 2 systems in FME2400 Ice production 1170 Ib hr Min 690 Ib 24 hr Air cooled water us
16. ON Freeze Harvest Clean Off Use for moderate to severe water conditions This setting may extend the Harvest cycle and reduce capacity e Standard factory setting is when these 3 lights are ON Harvest Clean Off Use for typical water conditions e Moderate is when these 2 lights are ON Clean Off This is for good water conditions e Minimum is when this 1 light is ON Off For excellent water conditions Adjust by pushing and releasing the Freeze button Each push and release increases the purge one level up to the maximum one more changes it to the minimum ee daa 4 The machine will 8 a automatically restart SCOTSMAN after 60 seconds of no _ switch inputs or 7 restart the machine by 16 conor scHs pushing and holding 4 5 the Off button for more INDICATOR LIGHTS than 3 seconds then 44 1 we releasing it The unit lt FREEZE will then be Off The 53 waves machine may now be O lt cean placed in a freeze cycle 2 O lt by pushing and 1 ES releasing the Freeze lt REFRIGERATION button Blue Controller Diagnostic Code Recall When the controller encounters a condition in the operation of the ice machine that may be an indicator of a problem such as a very long freeze time it displays a problem code with the Diagnostic Indicator Lights However if the user resets the controller to get back in oper
17. Water or remote air cooled Production began 5 91 ended 3 95 Ice production 932 to 646 Ib 24 hr Remote air cooled water use 120 gallons per 24 hours Water use water cooled condenser only 1032 gallons per 24 hours BTUS per hour 16100 Remote Refrigerant type R 22 Refrigerant charge Water cooled 55 Remote 256 oz Refrigerant pressures 240 hi 20 22 low just before harvest Metering device TXV plus distributor superheat 6 to 8 F Average amps 13 14 Cube count per cycle 597 Water solenoid valve 75 g p m flow rate Batch Weight 8 9 Ib Cycle time 15 19 minutes 90 70 S47 CMS1202 Modular Cuber Air water or remote air cooled Production began 4 91 ended 3 95 B model with 2 front panels in early 1992 Ice production 1280 to 825 Ib 24 hr Air cooled water use 152 gallons per 24 hours Water use water cooled condenser only 1446 gallons per 24 hours BTUS per hour Air 20100 Cooled Refrigerant type R 22 Refrigerant charge Air cooled 60 oz Water cooled 64 Remote 256 OZ Refrigerant pressures 240 hi 20 22 low just before harvest Metering device TXV plus distributor superheat 6 to 8 F Average amps 14 16 Cube count per cycle 995 Water solenoid valve 1 g p m flow rate Batch Weight 13 5 14 5 Ib
18. Water solenoid valve flow 33 g p m rate Cycle time at 90 70 21 minutes Cycle time at 70 50 16 minutes 90 70 22 CMES500 HP62 R 404A model Production began in 1994 Air water or remote Uses non adjustable TXV Harvest time at 2 2 minutes Replaced by CME506 in 1996 Ice production hi 459 Ib at 70A 50W AC Ice production low 363 Ib at 90A 70W AC Air cooled water use 90 gallons per 24 hours Water use water cooled condenser only 642 gallons per 24 hours BTUs per hour 6275 Refrigerant type R 404A Refrigerant charge 32 oz for air cooled 20 oz for water cooled Refrigerant pressures Water cooled freeze cycle set at 245 PSIG Freeze cycle 275 to 290 hi 35 40 low Harvest cycle 200 hi 85 105 low Minimum remote discharge pressure in freeze is 240 PSIG Metering device TXV superheat 6 to 8 F Average amps 10 12 freeze 12 15 harvest Cube count per cycle 400 Batch Weight 3 6 Ib Water solenoid flow rate 75 g p m Cycle time 24 minutes 90 70 19 minutes 70 50 90 70 23 CME650 HP62 R 404A model Production began in 1994 Air water or remote Uses non adjustable TXV Harvest time at 2 2 minutes Replaced by CME656 Ice production hi 626 Ib at 70A 50W AC Ice production low 527 Ib at 90A 70W AC Air cooled
19. at 90A 70W AC Ice production min 242 10 at 100A 90W AC Air cooled water use 56 gallons per 24 hours Water use water cooled condenser only 683 gallons per 24 hours BTUs per hour 9800 Refrigerant Type R 502 Refrigerant charge 32 oz air cooled 26 oz water cooled E model water cooled is 28 oz and 208 oz remote Refrigerant pressures 200 hi 30 low end of freeze Metering device Two cap tubes Average amps 14 17 freeze D model 9 10 freeze E model Cubes per cycle 398 5 6 Ib Batch Weight 5 6 Ib Water solenoid valve flow 75 g p m rate Cycle time 18 min 70 50 25 min 90 70 16 CM550 Modular Cuber air cooled only Similar to CM500 and CM650 Production ended 1992 Ice production max 521 Ib Ice production min 315 Ib Air cooled water use 76 gallons per 24 hours BTUs per hour 10900 Refrigerant Type R 502 Refrigerant charge 46 oz Refrigerant pressures 180 hi 28 low just before harvest Average amps 15 5 freeze 17 5 harvest Metering device Two cap tubes Cubes per cycle 398 Batch Weight 5 6 b Water solenoid valve flow 75 g p m rate Cycle time 17 minutes 70 50 17 CM650 Modular Cuber Contour cubes Air water or remote a
20. bin is full unit shuts off at the end of harvest 115 cv Operational Sequence CME306 CME456 CME1056 CME1356 CME1656 CME1856 CME2006 From Off push and release the Freeze button 1 Purge valve opens pump starts sump emptied 2 Purge valve closes 3 Inlet water valve opens fills sump 4 Compressor starts when sump is full Air cooled fan motor starts too 5 Water pump stops early in freeze cycle for 30 seconds 6 In low ambient condition fan motor may begin to cycle 7 Freeze continues until water level in sump drops to preset point for the second time Exception on the CME306 the first drop in water level triggers harvest 8 Fan may shut off before the end of freeze 9 Harvest begins Hot gas valve opens purge valve opens pump stops Remote models open the harvest bypass valve for a few seconds 10 Pump restarts sump is drained 11 Pump stops inlet water valve opens to add water to the sump but not fill it 12 Harvest continues for preset first cycle harvest time 13 If bin is not full cycle repeats beginning with step 3 compressor stays on If bin is full unit shuts off at the end of harvest 116 SCE170 Operational Sequence This cuber s freeze cycle is controlled by a cube size thermostat This thermostat senses suction line temperature and closes on temperature fall When the cube size thermostat closes the upper light on the control
21. charge AC 64 WC 62 Remote 288 oz w ERC411 Refrigerant pressures 215 295 discharge 27 33 suction just before harvest Water cooled discharge is 245 PSIG Suction in harvest is 82 to 94 PSIG Metering device TXV plus distributor superheat 8 to 10 F Average amps Freeze Single phase 15 17 Three phase 9 10 Average amps Single phase 13 Three phase 8 9 Harvest Batch Weight 16 Ib Cycle time 15 21 minutes 90 70 Preliminary Data Changed to Single front panel in July of 1999 B Series 1999 has single front panel C Series 2000 has plastic top panel E series has louvered left side panel F series New water cooled condenser 39 CME1386 New in 2004 Remote low side cuber Part of Eclipse system Use with CP1316 and ERC1086 Ice production 1200 Ib 24 hours Water use min 216 gal BTUs per hour 19 000 Max cycle times 50 freeze 14 harvest Refrigerant charge 288 ounces Refrigeration pressures 70 70 50 Suction at end of freeze 30 to 34 PSIG Discharge 230 to 250 90 90 70 Suction at end of freeze 32 to 36 PSIG Discharge 250 to 270 120 110 100 Suction at end of freeze 40 to 44 PSIG Discharge 370 to 390 Metering device 1 externally equalized TXV superheat 6 to 8 F Average comp amps Single phase 15 Th
22. hours Water use MDT4 49 gallons per 24 hours BTUs per hour MDT4 4000 Refrigerant type R 134a Refrigerant charge MDT3 12 02 Refrigerant charge MDT4 14 oz Refrigerant pressures 135 175 hi 13 14 low Metering device Cap tube Average amps 90 70 12 8 vending New bin bottom and ice chute May 2002 Top bearing retainer design changed May 2007 79 MDT5N25 and MTD5N40 Ice Maker Dispenser Production began June 2001 Replacing TDE550 and TDE650 Ice production 605 380 Ib Water use ice only 56 gallons Water use water cooled 558 gallons condenser only BTUs per hour 5000 Refrigerant type R 404A Refrigerant charge Air cooled 24 ounce Water cooled 18 oz Refrigerant pressures 250 220 high 38 low Water cooled discharge pressure should be 245 PSIG Metering device TXV Average amps 10 13 90 70 B series New water cooled condenser 80 MDT6N90 Replacing NDE750 Ice Maker Dispenser Production began June 2001 Ice production 720 435 Water use ice only 65 Water use water cooled 599 condenser only BTUs per hour 7000 Refrigerant type R 404A Refrigerant charge Air cooled 32 ounce Water cooled 22 oz Refrigerant pressures 250 220 high 38 low Water cooled dischar
23. the timer has rotated the cam far enough so that the low part of the cam releases the microswitch s actuator power is cut from the coil of the relay and the unit goes into the harvest cycle It stays in the harvest cycle until the timer pushes the microswitch actuator button in again If the bin control is still closed the machine will begin another cycle If it is open the ice machine will shut off 114 Lex Correct Size amp Shape CM Cube Size 113 cv Operational Sequence Electronic CM Models including CME256 CME306 CME456 CME506 CME656 CME686 CME806 CME810 CME1056 CME1356 CME1386 CME1656 CME1686 CME1856 CME2006 CME2086 and SCE275 Common with all commercial cubers is a need to initiate a cube release cycle The takes in water in a batch and uses it to make ice the measurement of how much of that water has been used during a freeze cycle is used to stop the freeze cycle and start the harvest cycle The harvest cycle continues until all ice has fallen Ice falling is sensed with a electric eye set that in some units doubles as a bin control The actual ice release time is used to set the next cycle s harvest time Cube size larger than shown on prior page is controlled by the float s stem It is not adjustable Models Float stem stick Float stem Cut in height color number on part CME256 WHITE 02 3383 01 21 4 CME30
24. to 8 F Average comp amps Single phase 15 Three phase 8 Batch Weight 19 20 Ib Cycle time At 70 70 50 15 to 16 minutes At 90 90 70 17 to 18 minutes At 120 110 100 28 to 29 minutes 43 CME1856 Production began in 2002 Water cooled only Similar to CME1656W but uses a Copeland Scroll compressor and larger condenser Ice production 1825 to 1695 Ib 24 hours Water use 273 gal 24 hours for ice 2695 gal 24 hours for condenser BTUs per hour 31 500 peak Max cycle times 36 freeze 14 harvest Refrigerant charge 60 oz R 404A Refrigerant pressures 250 discharge 23 suction just before harvest Suction in harvest is 80 PSIG Metering device TXV plus distributor superheat 8 to 10 F Average amps Freeze Single phase 19 Three phase 11 Average amps Single phase 22 Three phase 11 Harvest Batch Weight 20 Ib Cycle time 15 16 minutes 90 70 Softer compressor grommets used beginning 06S A4 CME2006 Production began in 1998 Remote only Similar to CME1656R but uses a Copeland Scroll compressor Ice production 1750 at 90 70 and 1930 at 70 50 Water use 307 gallons per 24 hours BTUs per hour 31 500 Max cycle times 36 freeze 14 harvest Refrigerant charge Remote 33
25. 0 to 200 hi 22 30 low Metering Device Cap tube Average amps 9 freeze 11 8 harvest Cube count per cycle 199 Batch Weight 2 5 3Ib Water solenoid valve flow 33 g p m rate Cycle time 14 to 18 minutes 90 70 CM250A 1 E model used different fan motor amp bracket from prior models 14 CM450 Modular cuber Contour cubes air or water cooled Single evaporator 230 volt In production between 1983 and 1993 Ice production Max 368 Ib at 70A SOW AC Ice production Min 262 10 at 100A 90W AC Air cooled water use 37 gallons per 24 hours Water use water cooled condenser only 610 gallons per 24 hours BTUs per hour 11500 Refrigerant Type R 502 Refrigerant charge 28 oz for air cooled 26 oz for water cooled Refrigerant pressures 350 to 200 hi 22 30 low Metering device Cap tube Average amps 8 5 freeze 12 harvest Cube count 199 Batch Weight 2 5 316 Water solenoid valve flow 33 g p m rate Cycle time 13 to 15 minutes 90 70 15 CM500 Modular Cuber Contour cubes Air water or remote air cooled In production 1985 94 Compressor change resulted in E model in 1992 Replaced by CMES500 Ice production max 505 Ib at 70A 50W WC ice production typical 300 Ib
26. 1 61 113 138 220 18 1901 62 145 175 165 18 1901 63 161 193 165 18 1901 64 21 25 330 18 1901 65 243 292 165 136 Run Capacitors The part number prefix for a Scotsman run capacitor is 18 1902 the ending numbers identify the individual part s configuration Part Number MFD VAC 18 1902 17 10 370 18 1902 27 40 440 18 1902 28 30 440 18 1902 29 20 370 18 1902 30 15 440 18 1902 45 25 370 18 1902 51 35 370 18 1902 52 15 370 18 1902 53 30 370 18 1902 55 35 370 18 1902 56 40 370 18 1902 57 45 370 18 1902 58 50 440 18 1902 59 60 370 18 1902 62 80 370 18 1902 63 30 440 18 1902 64 35 440 18 1902 65 17 5 440 137 cm Purge Adjustment Adjust by using the push buttons on the Controller 1 If the machine is on push and hold the OFF button for more than 3 seconds then release it 2 Push and hold the OFF button for more than 3 seconds just until all LEDs flash on then release it Do not hold it in it too long 3 Examine the green LEDs They should have all flashed once then certain ones will have turned on to indicate which purge level the machine is set at There are 5 levels of purge available e Maximum is when All 5 lights are ON Use for extreme water conditions Note This setting may extend the Harvest cycle and reduce capacity e Heavy is when these 4 lights are
27. 130 Refrigerant Temperature Pressure Cha Page 131 Thermistor Values Page 132 CM Thermistor Values Page 133 Sonar s sss Page 134 Compressor Potential Relays Page 135 Start Capacitors Page 136 Run Capacitors 137 Purge Adjustment Page 138 CM Blue Controller Page 139 Water Level Sensor Diagnostics E E Page 140 Warranty Summary Page 142 Date Code Chart Page 143 CM Controller Revision 3 pages Page 144 AutoSentry Control Board Page 147 AC25 Cuber with bin 2 cube sizes air or water cooled In production from 1977 to 1997 Ice production 220 to 125 Ib 24 hours Air cooled water use ice only 43 gallons per 24 hours Water use water cooled condenser only 369 gallons per 24 hours BTUs per hour 6300 Refrigerant type R 12 Refrigerant charge 16 5 oz Refrigerant pressures Air cooled 115 hi 5 low just before harvest Average amps 12 Cubes per cycle Small 108 Medium 56 Cycle time 17 to 25 minutes Water solenoid valve flow rate 25 g p m 90 70 During the harvest cycle on air cooled models the fan and pump cycle with the discharge pressure Water cooled discharge pressure is 135 PSIG AC30 Cuber with bin 2 cube sizes air and water cooled In production from 1974 to 1997 Ice production 258 to
28. 170 180 45 90 256 60 18 1903 33 190 200 55 115 332 60 18 1903 34 300 320 75 160 420 60 18 1903 35 190 200 60 124 336 50 18 1903 40 170 180 40 90 336 60 18 1903 44 150 160 45 90 256 60 18 1903 46 190 200 60 130 395 60 18 1903 47 300 320 60 140 395 60 18 1903 50 210 230 75 150 420 60 18 1903 52 170 180 55 115 332 60 18 1903 53 160 170 35 77 228 50 18 1903 54 240 260 60 140 395 60 18 1903 55 160 170 40 90 332 60 18 1903 56 240 260 60 121 337 50 18 1903 57 190 200 55 115 332 60 135 Start Capacitors The part number prefix for a Scotsman start capacitor is 18 1901 the ending numbers identify the individual part s configuration Part Number MFD VAC 18 1901 03 124 149 220 18 1901 04 324 389 110 18 1901 09 161 193 220 18 1901 12 540 648 110 18 1901 15 145 174 220 18 1901 20 108 130 330 18 1901 23 130 156 330 18 1901 27 189 227 330 18 1901 33 189 227 220 18 1901 40 88 109 250 18 1901 41 378 455 135 18 1901 42 270 324 160 18 1901 43 61 72 250 18 1901 45 88 106 330 18 1901 47 282 340 110 18 1901 48 145 174 250 18 1901 49 243 292 110 18 1901 50 145 174 250 18 1901 51 108 130 250 18 1901 52 130 156 250 18 1901 53 88 106 220 18 1901 54 108 130 220 18 1901 55 72 88 250 18 1901 56 72 88 330 18 1901 57 64 77 330 18 1901 58 270 324 330 18 1901 59 145 174 330 18 1901 60 288 352 125 18 190
29. 173 16 24 hours Air cooled water use ice only 84 gallons per 24 hours Water use water cooled condenser only 418 gallons per 24 hours BTUs per hour 8100 Refrigerant type R 12 Refrigerant charge 2202 Refrigerant pressures Air cooled discharge 125 5 low just before harvest Average amps 14 2 Cube per cycle Small 198 Medium 56 Water solenoid valve flow 50 g p m rate Cycle time 17 to 25 minutes 90 70 Water cooled discharge pressure is 135 PSIG AC125 Cuber with bin 1 cube size air cooled only In production from 1985 to 1994 Stainless steel cabinet in 1994 Ice production 118 to 82 Ib per 24 hours Water use 32 gallons per 24 hours BTUS per hour 4 600 Refrigerant type R 12 Refrigerant charge 17 oz Refrigerant pressures freeze 125 hi 5 low just before harvest Average amps freeze 8 3 Cube count 84 Water solenoid valve flow 48 g p m rate Cycle time 90 70 18 28 minutes During harvest when the pump is on the fan is off AF1 Flaker with bin air cooled only In production from 1974 to 1993 A through E models Ice production 335 to 209 Ib per 24 hours Water use 41 gallons per 24 hours BTUS per hour 3700 Refrigerant type R 12 Refrigerant charge 1
30. 2 refrigerant Ice production 72 to 44 Ib per 24 hours Water use 24 gallons per 24 hours BTUs per hour 2400 Refrigerant type R 22 Refrigerant charge 12 oz Refrigerant pressures freeze End of freeze 150 160 PSIG Discharge 10 11 PSIG Suction Refrigeration pressures harvest 100 125 PSIG discharge 90 PSIG max suction Metering device Cap tube Compressor amps freeze 4 3 4 Cubes per cycle 24 Water solenoid valve flow 21 g p m rate Batch weight 116 1 oz Cycle time 90 70 23 minutes 55 CSE60 New model in 2002 Replaced the CS60 Stainless steel medium gourmet cube R 134a refrigerant Ice production 72 to 44 Ib per 24 hours Water use 24 gallons per 24 hours BTUs per hour 2400 Refrigerant type R 134a Refrigerant charge 9 5 oz Refrigerant pressures freeze End of freeze 125 to 130 PSIG discharge 1 3 PSIG suction Refrigeration pressures harvest 83 125 PSIG discharge 120 PSIG max suction Metering device Cap tube Compressor amps freeze 4 3 to 3 6 Cubes per cycle 24 Batch weight 1 lb 1 oz Water solenoid valve flow 21 g p m rate Cycle time 90 70 20 25 minutes New fan motor amp blade in sn 615621 to 615640and in s n 615844 to 615983 56 CU0515
31. 25 high 25 low Metering device Internally equalized TXV superheat 6 to 8 F Batch weight 2 8 to 3 2 Ib Cycle time 17 at 70 50 20 at 90 70 Average amps 6 7 90 70 Has two half height evaporators in series F series New water cooled condenser 105 SLC300 22 cuber air or water cooled Fits SLB bins or SLD150 dispenser also adapts to RS100 and 15100 Production began 1992 ended 1995 Ice production 290 Ib 24 hr Air cooled water use 30 gallons per 24 hours Water use water cooled condenser only 339 gallons per 24 hours BTUS per hour 4500 Refrigerant type R 502 Refrigerant charge Air cooled 15 oz Water cooled 16 oz Refrigerant pressures 250 220 high 20 low Metering device TXV Batch weight 2 4 Ib Cycle time 13 16 minutes Average amps 6 10 90 70 SLC cubers use a float and siphon tube for water control 106 SLC400 22 cuber air or water cooled Fits SLB bins or SLD150 dispenser also adapts to RS100 and 15100 Production began 1992 ended in 1995 Ice production 350 Ib 24 hr Air cooled water use 51 gallons per 24 hours Water use water cooled condenser only 554 gallons per 24 hours BTUs per hour 6000 Refrigerant type R 502 Refrigerant charge Air cooled 20 oz Water cooled 19 oz Refri
32. 26 3311 39 26835 83 8652 127 3243 40 26104 84 8448 128 3176 41 25395 85 8250 129 3111 42 24707 86 8056 130 3047 43 24041 87 7868 131 2985 132 cm Thermistor Values Temp Resistance Temp Resistance Temp Resistance F ohms F ohms F ohms 132 2924 175 1279 218 616 133 2865 176 1256 219 606 134 2807 177 1234 220 597 gsx 179 1190 137 2642 180 1169 223 569 138 2589 181 1149 224 560 183 1109 141 2438 184 1090 227 534 142 2390 185 1071 228 526 187 1034 145 2252 188 1016 231 502 146 2208 189 998 232 495 147 2165 190 981 233 487 148 2123 191 965 234 480 149 2082 192 948 235 472 150 2042 193 932 236 465 i2 oe M iu 195 901 153 1927 196 885 239 444 154 1890 197 871 240 438 D 4 m 4 0 199 842 157 1785 200 828 243 419 158 1732 201 814 244 412 o m on mo m OX 203 787 161 1655 204 774 247 394 162 1624 205 761 246 389 163 1594 206 749 249 383 164 1565 207 737 250 377 165 1536 208 724 166 1508 209 713 167 1480 210 701 168 1453 211 690 169 1427 212 679 170 1401 213 668 171 1375 214 657 172 1350 215 646 173 1326 216 636 174 1302 217 626 133 Sonar Sonar is used as an ice level control on several Scotsman Cubers Models using 4 position control e MCMB860 e MCM1062 e MCM1462 Models using 2 position control CMS1002 e CME1002 e CMS1202 e CME1202 e CMS1402 e CME1402 CM
33. 350 500 30 15 550 32 19 B80 1 door B120 2 doors 42 15 BH800 42 11 B40 or B60 44 16 BH1370 44 1575 BH1351 1352 1360 47 1 2 14 BH900 47 1 2 15 BH900C 49 15 BH1000 51 15 BH1000C 52 13 BH750 52 15 BH1000A 31 1 2 18 1 2 BH1100 1300 1600 19 3 4 15 3 4 Ice Express System 128 Inlet Water Valves Scotsman uses several different inlet water valves All have a screen on the inlet Inlet Screen If the water flow into the cuber is below what is listed for the model in question the water valve s screen may need to be cleaned On the valve pictured above the inlet fitting will have to be removed to get to the screen A sheet metal screw turned partially into the screen may be used to pull the screen out Inlet water valves should not be operated without the screen Inlet Water Valve Blue CME Type Inlet Screen 129 Cuber Capacity Check 1 Check cube size is it correct e CM CMS CME SCE275 type Harvests in vertical strips e AC MC HC CS55 CS60 type Full cubes with a dimple in the bottom e SCE170 type Harvests as a sheet 3 16 bridge 1 16 dimple 2 Check ice formation pattern is it even e Must make ice over all freezing surfaces nearly evenly 3 Measure water temperature to ice machine 4 Measure air temperature e Air cooled check air temp into the coil e Water cooled check ambient air 5 Operate the ma
34. 4 Page 88 NDE750 amp NDE754 Page 89 NM650 Page 90 NM950 Page 91 NM952 Page 92 1250 Page 93 NME454 Page 94 NME650 Page 95 NME654 Page 96 NME950 Page 97 NME954 Page 98 NME1250 Page 99 NME1254 Page 100 NS650 Page 104 650 Page 102 NSE654 Page 103 SCE170 Page 104 SCE275 Page 105 SLC300 Page 106 SLC400 Page 107 SLE300 Page 108 SLE400 Page 109 TDE470 Page 110 TDE550 or TDE650 Page 111 SLIMLINE Page 112 CUBER Operational Sequence Page 113 cm Operational Sequence Page CM Operational Sequence CME256 506 CME656 CME806 and SCE275 Page 115 EM uence CME306 CME456 CME1056 CME1356 CME1656 CME1856 CME2006 Page 116 SCE170 Operational Sequence Page 117 Superheat 118 Electrical Suffix Code Page 119 Scotsman Model Identification Page 120 Remote Systems Page 121 Cuber Controller Page 122 Hermetic Compressor Diagnostics 123 Hermetic Compressor Diagnostics KERE age 124 Hermetic Compressor Diagnostics ai OBS SUI Q age 1 Hot Gas Valves Page 126 Kits ce XE Page 127 Ice Storage Bin Doors Page 128 Inlet Water Valves Page 129 Cuber Capacity Check Page
35. 4 oz Refrigerant pressures 150 125 hi 12 13 low Metering device Cap tube Average amps 7 8 90 70 Minor changes between A and B models compressor change between B and C models wiring changes between C and D models reservoir change between D and E models AF300 New model in 1993 R 22 self contained undercounter flaker Polyethylene cabinet Air or water cooled Replaced by AFE400 in 1995 Ice production 324 to 218 Ib per 24 hours Air cooled water use 33 gallons per 24 hours Water cooled only condenser water use 438 gallons per 24 hours BTUs per hour 3700 Refrigerant Type R 22 Refrigerant charge Air cooled 17 oz Water cooled 14 oz Refrigerant pressures 220 260 hi 24 25 low Metering device TXV Average amps 9 90 70 Reservoir change in 1994 AF325 Flaker with bin Air cooled only In production from 1978 to 1994 B model began 1988 Replaced by AFE325 Ice production 324 to 218 Ib per 24 hours Water use 41 gallons per 24 hours BTUS per hour 3700 Refrigerant Type R 12 Refrigerant charge 14 oz Refrigerant pressures 150 125 hi 12 13 low Metering device Cap tube Average amps 7 8 90 70 No parts changes between A and B models
36. 4 oz w ERC611 Refrigerant pressures 225 270 discharge 23 27 suction just before harvest Suction in harvest is 80 to 100 PSIG Metering device TXV plus distributor superheat 8 to 10 F Average amps Freeze Single phase 19 Three phase 11 Average amps Single phase 22 Three phase 11 Harvest Batch Weight 20 Ib Cycle time 15 16 minutes 90 70 B Series 1999 has single front panel C Series 2000 has plastic top panel Softer compressor grommets used beginning 06S 245 CME2086 New in 2004 Remote low side cuber Part of Eclipse system Use with CP1316 and ERC1086 Ice production 1800 Ib 24 hours Water use min 324 gal BTUs per hour 42 000 Max cycle times 50 freeze 14 harvest Refrigerant charge 336 ounces Refrigeration pressures 70 70 50 Suction at end of freeze 25 to 29 PSIG Discharge 230 to 250 90 90 70 Suction at end of freeze 26 to 30 PSIG Discharge 240 to 260 120 110 100 Suction at end of freeze 30 to 34 PSIG Discharge 340 to 360 Metering device 1 externally equalized TXV superheat 6 to 8 F Average comp Single phase 20 amps Three phase 14 Batch Weight 19 20 Ib Cycle time At 70 70 50 11 to 12 minutes At 90 90 70 12 to 13 minutes At 120 110 100 17 to 18 minutes 46 CMS1002 Modular Cuber
37. 6 CME456 DARK BLUE 02 3777 03 1 3 8 CME686 LIGHT GREEN 02 3777 02 1 5 8 CME810 LIGHT BLUE 02 3777 04 1 3 4 506 CME656 GREY 02 3383 02 17 16 CME806 SCE275 BLACK 02 3383 03 1 1 4 CME1056 SILVER 02 3777 01 13 16 CME1356 TAN 02 3383 04 21 8 1386 Dark Blue 02 3383 07 1 3 4 1656 BROWN 02 3383 05 1 3 4 1686 Light Green 02 3383 08 1 5 8 CME1856 CME2006 RED 02 3383 06 1 5 8 CME2086 Light Blue 02 3383 09 1 5 8 Amount of stem in inches above sensor body when harvest is triggered 114 cv Operational Sequence CME256 CME506 CME656 806 and SCE275 From Off push and release the Freeze button 1 If sump is full water pump starts If sump is not full water valve opens to fill it 2 Compressor starts when sump is full Air cooled fan motor starts too 3 Water pump stops early in freeze cycle for 30 seconds 4 Sump refills after pump restarts 5 Inlow ambient condition fan motor may begin to cycle on and off 6 Freeze continues until water level in sump drops to preset point Exception SCE275 must fill sump two more times 7 Fan may shut off before the end of freeze 8 Harvest begins Hot gas valve opens pump stops 9 Pumprestarts inlet water valve opens to fill and overflow the reservoir 10 Harvest continues for preset first cycle harvest time 11 If bin is not full cycle repeats compressor stays on If
38. 6 minutes 90 70 to 15 minutes 70 50 90 70 Air cooled 70 50 amp 90 70 Panel changes C and E series D series has PTCR F series had wc condenser change 29 CME686 New in 2002 Remote low side cuber head Part of 600 Ib Eclipse System use with CP686 and ERC680 Ice production 620 to 560 Ib day Water use 84 gallons per 24 hours min if unit runs 24 hours BTUs per hour 8500 Max times 53 freeze 13 harvest Refrigerant CP686 232 oz Charge listed on CP charge unit not CME Refrigeration Suction at the end of freeze 34 to 40 pressures PSIG Suction peak in harvest 90 to 150 PSIG Discharge at 70 70 50 230 to 250 PSIG at 120 110 100 340 to 360 PSIG Metering device 3 internally equalized TXVs superheat 6 to 8 F Average comp amps Single phase 5 three phase 3 5 Batch Weight 8 to 10 Ib Cycle time At 70 70 50 19 to 23 minutes At 90 90 70 23 to 26 minutes At 120 110 100 26 to 38 minutes 30 CMES806 New in 1998 Electronic Controls R 404A refrigerant plastic base Two evaporator 230 volt model C model in 1999 panel change Ice production 770 at 70 50 and 662 at 90 70 Air cooled water use 92 gallons per 24 hours Water use water cooled condenser only 1044 gallons per 24 hours BTUs per hour 15 500
39. 9 216 2 235 1 237 1 110 136 4 226 4 247 9 270 8 272 2 120 157 7 259 9 282 7 310 3 310 9 130 181 0 296 8 320 8 353 9 353 2 140 206 6 337 3 362 6 401 9 399 5 150 234 6 381 5 408 4 454 5 449 9 131 cm Thermistor Values Temp Resistance Temp Resistance Temp Resistance F ohms F ohms F ohms 0 85325 44 23394 88 7685 l 82661 45 22767 89 7507 2 80090 46 22159 90 7333 3 77607 47 21569 91 7164 4 75210 48 20997 92 6999 5 72896 49 20442 93 6839 6 70660 50 19903 94 6683 7 68501 51 19381 95 6530 8 66415 52 18873 96 6382 9 64400 S3 18381 97 6238 10 62453 54 17903 98 6097 11 60571 35 17439 99 5960 12 58752 56 16988 100 5826 13 56995 57 16551 101 5696 14 55296 58 16126 102 5569 15 53653 59 15714 103 5446 16 52065 60 15313 104 5325 17 50529 61 14924 105 5208 18 49043 62 14546 106 5093 19 47607 63 14179 107 4981 20 46217 64 13823 108 4872 21 44872 65 13476 109 4766 22 43571 66 13139 110 4663 23 42313 67 12812 111 4562 24 41094 68 12494 112 4463 25 39915 69 12185 113 4367 26 38774 70 11884 114 4273 27 37669 71 11592 115 4182 28 36600 72 11308 116 4093 29 35564 73 11031 117 4006 30 34561 74 10763 118 3921 31 33590 75 10502 119 3838 32 32649 76 10247 120 3757 33 31738 77 10000 121 3678 34 30855 78 9760 122 3601 35 30000 79 9526 123 3526 36 29171 80 9299 124 3452 37 28368 81 9077 125 3381 38 27589 82 8862 1
40. BL es 13 5 30 9 38 9 41 1 39 6 10 5 rus 14 6 328 410 433 41 8 11 us 152 934 2 42 1 12 5 15 8 34 7 43 2 45 5 44 1 14 17 1 36 7 45 4 47 8 46 4 15 55 is 17 7 37 7 46 5 16 2 18 44 38 7 47 7 50 2 48 8 18 uos 19 7 40 9 50 0 52 7 51 2 19 s 20 4 41 9 51 2 2110 43 07 22 52 5 2 15552 2 53 8 225505 22 4 45 3 54 9 57 8 56 4 x rare 23 2 46 4 56 2 24 23 9 47 6 57 5 60 4 59 1 20 1 25 4 499 60 1 632 61 8 2 26 4 e512 4 OLS 28 2 26 9 52 4 62 8 66 0 64 6 30 cus 28 5 54 9 65 6 68 9 67 5 29 3 562 67 0 32 30 1 57 5 68 4 71 8 70 5 ic MP 30 9 58 8 69 9 34 31 7 713 et 73 6 36 52 33 4 02 8 74 3 780 76 7 38 ise 35 2 5 05 0 5 774 i813 80 0 40 37 0 68 5 80 5 84 6 83 3 2 38 8 715 1 83 8 5 880 5 86 7 44 40 7 74 5 87 0 91 4 90 2 46 42 7 77 6 90 4 95 0 93 8 48 44 7 80 8 93 9 98 7 97 4 sus 46 7 84 0 97 4 1024 101 2 1 us 57 7 101 6 116 4 125 1 127 4 os 70 2 121 4 137 6 148 2 150 6 84 2 143 6 161 2 174 0 176 5 90i 99 8 168 4 187 4 2029 2052 100 117 2 195
41. E865 Sonar will shut the ice machine off when the ice level builds up to the point where it is within the selected distance from the transducer located in the base of the ice machine Selection is controlled by a switch either a 4 position rotary switch or a 2 position rocker switch On the board is a5 pin connection point for the switch The pins are numbered 1 thru 5 5 is common A connection between a pin 1 4 and 5 determines the shut off point Pin Connections Shut Off Distance Setting 1 W to5 BK 9 32 to 12 Full 2 5 15 to 16 3 BU to 5 22 to 23 or Partial 4 Y 5 30 to 31 Va 12 2402 01 is the harness for the two position switch The 4 position switch includes its harness 134 Compressor Potential Relays The part number prefix for a Scotsman compressor start relay is 18 1903 the ending numbers identify the individual part s configuration Part Number Pick Up Volts Drop Out Continuous Hz Volts Voltage Rating 18 1903 04 150 160 20 55 130 60 18 1903 18 340 360 55 125 336 60 18 1903 21 320 340 60 140 395 60 18 1903 22 300 320 60 133 336 50 18 1903 26 320 340 75 160 420 60 18 1903 28 260 280 75 150 420 60 18 1903 29 240 260 60 140 395 60 18 1903 30 280 300 60 140 336 50 18 1903 31
42. Ib 24 hr Air cooled water use 115 Water use water cooled condenser only 1025 gallons 24 hrs BTUs per hour 13200 Refrigerant type R 404A Refrigerant charge Air cooled 36 oz Water cooled 24 oz Remote air cooled 208 OZ Refrigerant pressures 250 210 high 32 low Metering device TXV superheat 6 to 8 F 90 70 Note NME1250RL production began in 1997 uses 21 wide cabinet 99 NME1254 AutoSentry model Air water or remote Production began in March 2000 Ice production 1345 785 Ib 24 hr Air cooled water use 115 Water use water cooled 1025 gallons 24 hrs condenser only BTUs per hour 10000 RL BTUH for cond unit 7250 7000 sizing Refrigerant type R 404A Refrigerant charge Air cooled 36 oz Water cooled 24 oz Remote air cooled 208 OZ Refrigerant pressures 250 210 high 32 low Metering device TXV superheat 6 to 8 F 90 70 B series New water cooled condenser 100 NS650 Nugget ice maker with bin Air or water cooled Production began in 1989 and ended in 1994 Ice production 710 460 Ib 24 hr Air cooled water use 74 gallons per 24 hours Water use water cooled condenser only 763 gallons per 24 hours BTUs per hour 9800 Refrigerant type R 502 Ref
43. R 404A Refrigerant pressures 23 PSIG 11 F Metering device Automatic Expansion Valve For condensing unit 74 MCM860 Modular Cuber Water or remote air cooled 3 phase only Production between 6 90 and early 1991 Ice production 735 to 572 Ib 24 hr Air cooled water use 133 gallons per 24 hours Water use water cooled condenser only N A BTUs per hour 19 500 Refrigerant type R 502 Refrigerant charge Water cooled 51 remote 256 oz Refrigerant pressures 265 hi 26 low just before harvest Metering device TXV superheat 6 to 8 F Average amps 5 6 Cube count per cycle 597 Water solenoid valve flow rate 5 g p m Cycle time 16 24 minutes 90 70 75 MCM1062 Modular Cuber Water or remote air cooled 3 phase only Production began 6 91 ended 3 95 Ice production 932 to 646 Ib 24 hr Air cooled water use 120 gallons per 24 hours Water use water cooled condenser only 1032 gallons per 24 hours BTUS per hour 21 900 Refrigerant type R 22 Refrigerant charge Water cooled 55 remote 256 oz Refrigerant pressures 265 hi 22 low just before harvest Metering device TXV superheat 6 to 8 F Average amps 6 7 Cube count per cycle 597
44. Water use 20 gallons per 24 hours BTUs per hour 1400 Refrigerant type R 134a Refrigerant charge 5 oz Refrigerant pressures 5 low just before harvest Metering device Cap tube Average amps 4 Cubes per cycle 8 Water solenoid valve flow 22 g p m rate Cycle time 25 minutes 59 FD4 Flaker Dispenser Air cooled only Produced between 1972 and 1989 FD470 Flaker Dispenser Air cooled only Production began in 1989 B model with electric eyes in early 1992 Replaced by FDE470 in 1995 Ice production 470 to 274 Ib 24 hours Water use 49 gallons per 24 hours BTUs per hour 7700 Refrigerant type R 12 Refrigerant charge 18 oz Refrigerant pressures 150 hi 15 low Metering device Cap tube Average amps 12 8 vending 90 70 Minor changes between A and B models portion control removed for C model wiring changes between C and D model FD470 differs from the FD4 in the bin and rotor for the bin and bin control with B model 60 FDE470 Flaker Dispenser Air cooled only Production began in Oct 1994 R 134a Ice production 470 to 280 Ib 24 hours Water use 49 gallons per 24 hours BTUs per hour 7700 Refrigerant type R 134a Refrigerant charge 14 oz Refrigerant pressures 135 175 hi 13 14 low Metering devic
45. ant type R 404A Refrigerant charge WC 36 oz Remote 336 oz Refrigerant pressures remote Suction 28 Discharge 210 just before harvest Suction peak in harvest 75 100 PSIG Water cooled discharge is a constant 245 PSIG Metering device TXV plus distributor superheat 6 to 8 F Average amps 8 7 10 6 Water solenoid valve flow 75 g p m rate Batch Weight 8 916 Cycle time 14 17 minutes 90 70 84 CME1000 42 wide modular cuber air cooled only R 404A model Production began in 1995 replaced the CM1000 and was replaced by the CME1056A Ice production 826 Ib 24 hr Air cooled water use 170 gallons per 24 hours BTUs per hour Air Cooled 18800 Refrigerant type R 404A Refrigerant charge 42 oz of R 404A Refrigerant pressures 190 hi 25 low just before harvest Metering device TXV plus distributor superheat 6 to 8 F Average amps Compressor amps 10 7 13 3 Cube count per cycle 600 Water solenoid valve flow 75 g p m rate Batch Weight 8 916 Cycle time 13 14 minutes 90 70 35 CME1002 30 wide modular cuber water or remote air cooled R 404A unit Production began in 1995 Replaced by the CME1056 in 1999 Ice production 825 Ib 24 hr Remote air cooled water use 137 gallons
46. ate Batch Weight 9 11 Ib Cycle time 14 to 16 minutes 70 50 15 to 18 minutes 90 70 90 70 F series New water cooled condenser 97 CME1202 48 wide modular cuber air cooled water cooled or remote air cooled R 404A unit Production from 1995 to 1998 Replaced the CMS1202 Ice production 1014 16 24 hr Air cooled water use 189 gallons per 24 hours Water use water cooled condenser only 1501 gallons per 24 hours BTUs per hour Remote 18800 Refrigerant type R 404A Refrigerant charge AC 64 oz WC 62 oz Remote 448 oz w ERC401 Refrigerant pressures 210 315 hi 30 35 low just before harvest Water cooled discharge is 245 PSIG Metering device TXV plus distributor superheat 8 to 10 F Average amps Single phase 13 17 Three phase 8 11 Water solenoid valve flow 1 g p m rate Batch Weight 13 5 14 5 Ib Cycle time 14 19 minutes 90 70 38 CME1356 48 wide modular cuber Air cooled water cooled or remote air cooled R 404A unit Production began in 1998 Ice production 1145 at 90 70 to 1400 Ib at 70 50 Air cooled water use 223 gallons per 24 hours Water use water cooled condenser only 1875 gallons per 24 hours of run time BTUs per hour 21 500 Max cycle times 36 freeze 14 harvest Refrigerant
47. ation the code is no longer displayed and with the black controllers it could not be recalled That has changed with the blue controller The last two error codes if any exist can be recalled To recall the last error codes 1 Switch the unit Off by holding the Off button in for longer than 3 seconds 2 Hold the Off button down again until the Purge Setting indicators Green Lights are on 3 Push and release the Harvest button e The last error code if any will be displayed and the purge setting code will disappear 4 Push the Harvest button again and the second to last error code AND the Bin Full light will be displayed Only two error codes are available for display e f no error code exists no code will be displayed and there will be NO LIGHTS showing e Pushing Harvest again will toggle back to the last error code and the bin full light will go out e Pushing it again will toggle back to the second to last error code and also switch on the Bin Full light 5 Toreturn from the display of the last error do nothing for 60 seconds or push and hold the Off button until the off light glows After returning from the display of the last error Off light is on the machine may be returned to the ice making process by pushing and releasing the Freeze button 139 Water Level Sensor Diagnostics Connection n i 1 Confirm that at least one light on the board is glowi
48. board is switched on and an internal timer in the control board finishes the cycle When harvest is initiated the fan shuts off and the hot gas and purge valves open The SCE170 stays in harvest until either the curtain opens or 7 minutes have passed When the curtain re closes the unit returns to a freeze cycle If the curtain remains open the machine shuts off Dimple Must NOT Be DEEPER than 146 Should About 34e JUST RIGHT 117 Superheat In a mechanical refrigeration system superheat is the amount the evaporator outlet s temperature is warmer than the temperature equivalent of the refrigerant s pressure in the evaporator Too much superheat is a symptom of low charge or a TXV starving the evaporator and likely overheating the compressor Too little is a symptom of a TXV flooding through and overcooling the compressor Testing has shown that superheat is usually not a constant number It changes both during the freeze cycle of a cuber and as the thermostatic expansion valve modulates or hunts An accurate measurement of superheat requires several sample measurements of TXV bulb temperature and suction pressure The recommended frequency of measuring is every 15 seconds Start 5 minutes into a freeze cycle Set up a table like this to record the information Freeze Cycle Time 15 sec 30 sec 45 sec 60 sec Average 1 TXV bulb temp n a 2 Suction n a Press
49. chine for 2 cycles and then measure the total cycle time freeze harvest Compare to the cycle time in the manual or this book for the air and water temperatures the ice machine is operating in e 90 70 90 F air temp and 70 F water temp 70 50 70 F air temp and 50 F water temp Temperatures above will cause longer cycles Temperatures below will cause shorter cycles Temperatures in between will result in cycle times between 90 70 and 70 50 times 6 If total cycle time is within a minute or two of what is listed in the machines s service manual for the temperatures the unit is in the capacity is normal Note Harvest times set for winter operation for those units with adjustable harvest times will extend the total cycle beyond normal 130 Refrigerant Temperature Pressure Chart TEMP R 12 R22 R502 R 404A HP81 14 2 8 NOVO sivas WOLD 21 1 19 6 el OT asea LUO 225 21 1 310i 2 xus 4 5 16 5 220 242 22 7 5 4 51459 24 2 1 259 24 4 6 6 3 19 3 25 8 27 6 26 1 4 7 2 208 27 5 29 3 27 8 z CM 8 2 5 5422 4 29 3 5 091 1 29 7 9 2 24 0 314 330 4 31 5 b PPP 9 7 24 8 32 0 10 2 25 6 329 94 9 33 5 E i e ieee inl ow ts 949 9369 35 5 12 3 29 1 36 9 39 0 37 5
50. d SLC evaporators are covered for 5 years parts and labor and their condensers and compressors have 5 years parts e BH1100 BH1300 BH1600 BH1366 BH1666 and HTB bins have 5 years parts and labor e ID RS and IS dispensers have 1 year labor and 2 years parts e CSW45 has 1 year parts and labor e AutoSentry Flakers NME654 NME954 NME1254 NME1854 FME804 FME1204 FME1504 FME2404 have three years parts three years labor and 5 years on the compressor parts e MAR industrial flakers have three years parts and labor plus 10 years parts on the evaporator drum and refrigerant seal kit All other products have two years parts two years labor and 5 years on the compressor parts See warranty statements for specific information 142 Date Code Chart Scotsman s production date code is located in the serial number The code is month amp year From 1972 to May 2004 this date code system was used Month Code January 07 July 01 February 08 August 02 March 09 September 03 April 10 October 04 May 11 November 05 June 12 December 06 Year Code 1972 N 1984 U 1996 A 1973 1985 G 1997 1974 P 1986 V 1998 1975 1987 1999 1976 0 1988 W 2000 1977 1989 2001 1978 1990 2 X 2002 D 1979 D 1991 K 2003 S 1980 S 1992 Y 2004 1981 1993 L 2005 T 1982 T 1994 Z 2006 F 1983 F 1995 M 2007 U For examp
51. d split phase auger drive 90 NM950 Modular nugget ice maker Air water or remote air cooled Production between 1989 and 1992 Ice production 1100 625 Ib 24 hr Air cooled water use 126 gallons per 24 hr Water use water cooled condenser only 700 gallons per 24 hr BTUs per hour 11300 Refrigerant type R 502 Refrigerant charge Air cooled 38 oz Water cooled 34 oz Remote air cooled 256 OZ Refrigerant pressures Air cooled 315 hi 30 low Water cooled 220 hi 28 low Metering device TXV superheat 6 to 8 F Average amps 7 2 90 70 Note NM1850 has 2 NM950 ice making chassis in its cabinet Changes Black gearmotor and split phase auger drive 91 NM952 Modular nugget ice maker Air water or remote air cooled Production began in 1993 ended in 1995 Ice production 1113 712 Ib 24 hr Air cooled water use 101 gallons per 24 hr Water use water cooled 679 gallons per 24 hr condenser only BTUs per hour 11300 Refrigerant type R 22 Refrigerant charge Air cooled 32 oz Water cooled 28 oz Remote air cooled 256 OZ Refrigerant pressures Air cooled 180 hi 25 low 70 50 Water cooled 220 hi 25 low Refrigerant pressures Air cooled 240 hi 25 low 90 70 Water cooled 220 hi 25 low Metering device TXV super
52. down and note the voltage changes It should change from between about 5 VDC as the light is blocked higher to a lower reading when un blocked If it does not change the sensor may be dirty or has failed Remove the dust cover from the sensor to clean it Note The sensor must be properly assembled The terminals of the sensor must be in the lower right corner If they are in the upper left remove the sensor s dust cover and reverse the board Yellow bottom Blue controllers Black controllers White Blocked 4to5 VDC about 5 VDC White Unblocked lt 1 VDC less than when blocked 8 With the voltmeter probe still on the bottom terminal of 2 place the other one on the second pin from the top red wire Move the float stick up and down note the changes in voltage It should react the same as in step 7 Yellow bottom Yellow Blue Black controllers controllers Red Blocked 4to5 VDC about 5 VDC Red Unblocked 1 VDC Less than when blocked 9 If all voltages check out there is nothing wrong with the sensor or the voltage it receives from the controller 141 Warranty Summary Scotsman s commercial warranty varies by product type country and model prefix or model number e All cubers CS60 CSE60 CME SCE BH and SLB bins CD200 HD and SLD dispensers have 3 years labor 3 years parts plus CME SCE SLE an
53. e Cap tube Average amps 12 8 vending 90 70 5481 5 FM800 Modular flaker Air water or remote air cooled All new design in 1989 Replaced by FME800 in 1994 Ice production 810 480 Air cooled water use 77 gallons per 24 hours Water use water cooled condenser only 920 gallons per 24 hours BTUs per hour 9500 Refrigerant type R 502 Refrigerant charge Air cooled 34 oz Water cooled 28 oz Remote air cooled 256 OZ Refrigerant pressures Air cooled 315 hi 34 low Water cooled 220 hi 28 low Metering device TXV superheat 6 to 8 F Average amps 16 90 70 62 FM1200 Modular flaker Air water or remote air cooled All new design in 1989 Last production in late 1992 Ice production 1195 690 Ib 24 hr Air cooled water use 123 gallons per 24 hours Water use water cooled condenser only 689 gallons per 24 hours BTUs per hour 10900 Refrigerant type R 502 Refrigerant charge Air cooled 38 oz Water cooled 34 oz Remote air cooled 256 oz All R502 Refrigerant pressures Air cooled 315 hi 30 low Water cooled 220 hi 28 low Metering device TXV superheat 6 to 8 F Average amps 7 Note FM2400 uses 2 FM1200 chassis in one cabinet
54. e 105 gallons Water use water cooled 667 gallons condenser only BTUs per hour 10900 Refrigerant type R 404A Refrigerant charge Air cooled 30 oz Water cooled 24 oz Remote air cooled 208 OZ Refrigerant pressures air cooled and water cooled at 90 70 Air cooled 275 hi 35 low Water cooled 245 hi 35 low Refrigerant pressures remote Remote 205 hi minimum 260 at 90 70 30 35 low Metering device TXV superheat 6 8 F Average amps Compressor amps 2 8 for 3 phase and 4 3 for single phase 90 70 Note FME1200RL production began 1997 68 FME1204 AutoSentry model Air water or remote Production began in March 2000 2 systems in FME2404 Ice production 1170 Ib hr Min 690 Ib 24 hr Air cooled water use 105 gallons Water use water cooled 667 gallons condenser only BTUS per hour 7650 RL BTUH for cond unit 6000 5750 sizing Refrigerant type R 404A Refrigerant charge Air cooled 30 oz Water cooled 24 oz Remote air cooled 208 OZ Refrigerant pressures air cooled and water cooled at 90 70 Air cooled 275 hi 35 low Water cooled 245 hi 35 low Refrigerant pressures remote Remote 205 hi minimum 260 at 90 70 30 35 low Metering device TXV superheat 6 8 F Average amps Compressor amps 2 8 for 3 phase and 4 3 for si
55. ed Production began in October 1994 Replaced the AC125 Ice production high 165 Ib at 70A 50W Ice production typical 110 Ib at 90A 70W AC Ice production low 83 Ib at 100A 90W AC Air cooled water use 60 gallons per 24 hr Water use water cooled condenser only 284 gallons per 24 hr BTUs per hour 3000 Max harvest cycle time 7 minutes Refrigerant charge R 404A Air cooled 17 oz Water cooled 9 oz Refrigerant pressures 300 210 high 25 low Metering device Internally equalized TXV superheat 6 to 8 F Batch weight 1 6 to 1 8 Ib Cycle time 15 minutes at 70 50 18 minutes at 90 70 Average amps 9 90 70 Note Control position changed July 1998 Hi pressure cut out changed from manual reset to auto reset in August 1998 B series began due to compressor change C series New water cooled condenser 104 SCE275 Undercounter Cuber Air or Water cooled Production began September 1997 Replaced AC25 and AC30 Technology Ice production 305 to 180 16 24 hr Air cooled water use 64 gallons per 24 hr Water use water cooled 656 gallons per 24 hr condenser only BTUS per hour 5500 Refrigerant type R 404A Refrigerant charge Air cooled 18 oz Water cooled 12 oz Refrigerant pressures 300 2
56. ensor or harness needs to be replaced The harness can be checked the same way by unplugging the connection at the sensor and testing again f the lights do not glow as indicated after the jumper test the controller has failed and needs to be replaced 146 AutoSentry Control Board Indicator Light Reference Glowing Blinking Off Water OK Normal When No water or Water sensor shutting off open circuit has due to no between continuity to water sensor and chassis ground Power OK Normal No power to Power to unit or control board pressure Switch open Service Auger drive In restart Normal motor mode overloaded needs manual reset Freeze Normal ice During two Standby making mode minute delay mode restart Bin Full Normal bin During shut Normal ice full mode down making mode 147
57. er 4 98 Timer changed to 3 hour B model after 6 98 Timer changed to 2 hour C model Timer changed to 6 hour Timer is part number 12 2431 01 plus a harness Connect the timer s wire to the harness and the 3 hour wire to the 6 minute terminal 12 CD450 Cuber Dispenser for motel hotels Air and water cooled Produced between 1981 and 1989 Ice production 414 to 245 Ib per 24 hours Air cooled water use 77 gallons per 24 hours Water use water cooled condenser only 480 gallons per 24 hours BTUs per hour 8500 Refrigerant Type R 12 Refrigerant charge 27 oz Refrigerant pressures 125 hi 5 low just before harvest Average amps 14 9 Cube count 120 Water flow rate 2 flow controls 30 g p m each Cycle time 25 minutes 90 70 13 CM250 Modular cuber Contour cubes air or water cooled In production 1985 94 Replaced by CME250 Ice production Max 318 at 70A 50W WC Ice production Typical 230 Ib at 90A70W AC Ice production Min 187 at 100A 90W AC Air cooled water use 41 gallons per 24 hours Water use water cooled condenser only 454 gallons per 24 hours BTUs per hour 6300 Refrigerant Type R 502 Refrigerant charge 34 oz for air cooled 30 oz for water cooled Refrigerant pressures 35
58. es that are too large may cause excessive refrigerant flow to the compressor When replacing a complete valve do NOT use anything other than the OEM valve specified for the model in question Rebuild kits are available for those valves without seat damage Diagnosis Most hot gas valves are pilot type valves Activation lifts a plunger that relieves pressure above the main valve disk allowing the main valve disk to lift up allowing full flow of gas Valves can fail in three ways 1 Do not open 2 Leak through when closed freeze cycle 3 Do not open fully Do not open When a valve does not open in the harvest cycle the power to the valve coil should be the first thing to check If the proper voltage is present check the coil for continuity Leaks through when closed This can be caused by contamination on the seat of the valve The degree of leak through can vary greatly A good valve will have some temperature differential between its inlet and outlet during freeze and frost will gradually build up on the tubing leading from the evaporator inlet to the gas valve A leaking valve will cause the body of the valve to stay hot during the freeze cycle Does not open fully This can be caused by a stuck disk in the valve The coil pulls up the plunger and the valve opens but ice release is slow Another symptom of this is very low suction pressure during harvest and lack of heat at the evaporator inlet 126
59. evice Internally equalized TXV superheat 3 to 15 F Average comp amps 7 9 freeze 8 harvest Batch Weight 3 25 3 5 Ib Cycle time 18 minutes 90 70 to 16 minutes 70 50 90 70 Panel changes C and E series D series has PTCR F series had wc condenser change 25 CME306 22 Wide Platform Similar to CME256 Production began May 2000 Replaces SLE300 Ice production 340 to 260 Ib 24 hours Air cooled water use 52 gallons per 24 hours Water use water cooled condenser only 513 BTUs per hour 5500 Maximum Times minutes 45 freeze 14 harvest Refrigerant charge R 404A 23 oz for air cooled 15 oz for water cooled Suction pressure PSIG 25 27 end of freeze 95 105 peak in harvest Discharge pressure 203 266 5 min in freeze PSIG 170 200 minimum in harvest Metering device TXV superheat 3 to 15 F Average amps 10 freeze 11 harvest Cube count per cycle 200 Batch Weight 3 25 3 5 Ib Water solenoid valve flow 1 25 g p m rate Cycle time 16 minutes 90 70 to 13 minutes 70 50 90 70 Air cooled 70 50 amp 90 70 B series New water cooled condenser C series New TXV 26 CME456 22 Wide Platform Similar to CME506 Uses two TXVs C series has different TXVs from A am
60. ge pressure at 245 PSIG Metering device TXV superheat 6 to 8 F Average amps 12 13 90 70 B series New water cooled condenser 81 MFE400 Modular Flaker Replaces the MF400 Production began October 1994 and ended in early 2007 Ice production 480 to 310 Ib 24 hr Air cooled water use 46 gallons per 24 hours Water use water cooled condenser only 287 gallons per 24 hours BTUs per hour 4000 Refrigerant type R 134a Refrigerant charge 15 oz Refrigerant pressures Air cooled 137 170 high 13 14 low Water cooled 135 140 high Metering device Cap tube Average amps 10 90 70 B series New water cooled condenser 82 MH750 Modular nugget ice maker Air water or remote air cooled Produced between 1981 and 1989 Many changes between A and C model Ice production 636 to 415 Ib per 24 hours Air cooled water use 77 gallons per 24 hours Water use water cooled condenser only 403 gallons per 24 hours BTUs per hour 7500 Refrigerant type R 12 Refrigerant charge Air cooled 26 oz Water cooled 23 Remote 224 Refrigerant pressures 150 135 hi 10 12 low Metering device Air and Water use cap tube Remote used AXV Average amps 15 90 70 Changes Breaker bearing control box eva
61. gerant pressures 250 220 high 20 low Metering device TXV Batch weight 3 8 Ib Cycle time 13 16 minutes Average amps 7 11 90 70 107 SLE300 22 cuber air or water cooled Fits SLB bins or 510150 dispenser also adapts to RS100 and 15100 Production from 1995 to 2000 Ice production 290 220 Ib 24 hr Air cooled water use 35 gallons per 24 hours Water use water cooled condenser only 307 gallons per 24 hours BTUs per hour 4500 Refrigerant type R 404A Refrigerant charge 15 oz Refrigerant pressures 280 200 high 20 25 low Water Cooled 270 PSIG Metering device TXV Batch weight 2 416 Cycle time 18 22 minutes 90 70 Hot gas valve changed in March 1997 see PS 10 97 108 SLE400 22 cuber air or water cooled also remote air cooled Fits SLB bins or SLD150 dispenser also adapts to RS100 and 15100 Production from 1995 to 2000 Ice production 400 295 Ib 24 hr Air cooled water use 51 gallons per 24 hours Water use water cooled condenser only 415 gallons per 24 hours BTUs per hour 6000 Refrigerant type R 404A Refrigerant charge Air cooled 19 oz water cooled 18 oz remote 136 oz Refrigerant pressures 220 370 high 22 30 low Water Cooled 270 PSIG
62. he CM cuber is capable of providing the service technician with a guide toward possible problems thru the use of indicator lights The diagnostic codes indicate machine problems not controller faults Water Diagnostic Light Water Pump not pumping blinks one time and repeats Water Diagnostic Light Water does not fill reservoir blinks 2 times and repeats Water Diagnostic Light is Water valve leaking thru a lot on without blinking Refrigeration Diagnostic Maximum length harvest cycle use Light blinks one time and ice sensed repeats Refrigeration Diagnostic Maximum length harvest cycle use Light Blinks two times no ice sensed and repeats Refrigeration Diagnostic Discharge temperature too high eee 3 times and Fan motor failed in high ambients Refrigeration Diagnostic Maximum length freeze cycle Light is on without blinking Bin Full Light is ON Bin is full ice sensors blocked Both Error lights Discharge or Water temperature continuously the sensor failure machine is still making ice the refrigeration Water temperature did not fall diagnostic light is on properly in the freeze cycle continuously the machine is still making ice 122 Hermetic Compressor Diagnostics There are three basic conditions that a DEFECTIVE compressor might have 1 Is totally silent no pumping 2 Makes a hum
63. heat 6 to 8 F Average amps 7 2 90 70 NM1852 models use 2 NM952 ice making units in one cabinet 92 NM1250 Modular nugget ice maker Air water or remote air cooled Production began in 1989 and ended in 1994 Ice production 1345 765 Ib 24 hr Air cooled water use 140 gallons per 24 hours Water use water cooled condenser only 935 gallons per 24 hours BTUs per hour 13200 Refrigerant type R 502 Refrigerant charge Air cooled 40 oz Water cooled 30 oz Remote air cooled 208 OZ Refrigerant pressures 250 210 high 30 low Metering device TXV superheat 6 to 8 F Average amps 90 70 9 5 Changes Black gearmotor and split phase drive motor 93 NME454 New model in 2007 Ice production 370 Ib 24 hr Air cooled water use 45 gallons Water use water cooled 264 gallons condenser only BTUs per hour 5300 Refrigerant type R 404A Refrigerant charge Air cooled 22 oz Water cooled 18 oz Refrigerant pressures Air cooled 315 hi 34 low Water cooled 245 hi 34 low Metering device TXV superheat 6 to 8 F Average comp amps 8 1 90 70 94 NME650 HP62 R 404A model Air water or remote Production from 1994 to 2000 Ice production 745
64. ice Maker Dispenser Relative Size e 506 ranks the unit by ice production CME506 makes more ice than a CME256 but less than a CME656 e Ice maker dispenser a 3 has less ice production than a 4 Dispenser Type e T Touch Free L Lever Cond Type e Ameans air cooled e W means water cooled e R means remote air cooled e RL means remote low side Ice Type e N Nugget e F Flake e C Cubelet Finish e E means painted enamel no longer used e S means stainless steel all are S beginning in 2000 Bin Size e Rated calculated dispenser capacity in pounds Electrical e 1 means 115 volt see prior page for more info Series e and F means 6th design series Other models are similar finish is not used on molded cabinet models such as SCE170 Older cubers listed an S or M after the relative size number for Small or Medium cube 120 Remote Systems Headmaster Discharge Pressure EX gt Diaphragm Up b Push Rod Up Pressure High Ex Normal operation System discharge pressure is higher than the sealed dome s pressure and the diaphragm is forced up allowing the valve seat to open the liquid line Diaphragm Down Liquid Stopped Low temperature operation System discharge pressure is lower than the sealed dome pressure The diaphragm then forces down the push rod which closes the liquid 121 Cuber Controller The Controller on t
65. imes 50 freeze 14 harvest Refrigerant charge AC 64 WC 62 Remote 288 oz W ERC411 Refrigerant pressures 210 295 discharge 21 36 suction just before harvest Water cooled discharge is 245 PSIG Suction in harvest is 85 to 105 PSIG Metering device TXV plus distributor superheat 8 to 10 F Average amps Freeze Single phase 15 17 Three phase 11 Average amps Single phase 15 17 Three phase 9 Harvest Batch Weight 19 2 Ib Cycle time 18 minutes at 70 50 amp 22 minutes at 90 70 90 70 Changed to Single front panel in July of 1999 B Series 1999 has single front panel C Series 2000 has plastic top panel AC E series has louvered left side panel F series New water cooled condenser 24252 CME1686 New in 2004 Remote low side cuber Part of Eclipse system Use with CP1316 and ERC1086 Ice production 1400 Ib 24 hours Water use min 252 gal BTUs per hour 21 500 Max cycle times 50 freeze 14 harvest Refrigerant charge 288 ounces Refrigeration pressures 70 70 50 Suction at end of freeze 35 to 37 PSIG Discharge 230 to 250 90 90 70 Suction at end of freeze 35 to 37 PSIG Discharge 250 to 270 120 110 100 Suction at end of freeze 40 to 44 PSIG Discharge 370 to 390 Metering device 1 externally equalized TXV superheat 6
66. ine to function When the top row of cubes on the right side of the left evaporator fill out large enough to contact the ice thickness thermostat probe tube the ice thickness thermostat switches the machine into the harvest cycle The machine stays in the harvest cycle until the suction line temperature warms up above 55 F Then the harvest termination thermodisk switches the machine back into the freeze cycle If the bin thermostat opens it will shut the machine off immediately SLE Cubers differ in their control system While they also operate from 3 thermostats a complete cycle relay has been added to keep the machine on until the end of the next harvest cycle after the bin thermostat has sensed a bin full condition 112 CUBER Operational Sequence CM HC MC and AC cubers have similar operational sequences The length of the freeze cycle and therefore the cube size is controlled by a thermostat sensing suction line temperature This thermostat is called the cube size control When it closes on temperature fall it connects power to a timer motor The timer motor moves a cam which has a microswitch actuator riding on it When the timer s Proper size and shape of a Scotsman Round Cube microswitch is pushed IN by the high part of the cam the micro switch connects power to Fw the relay in the circuit board This is the freeze cycle Note Cubes not actual size SMALL SIZE MEDIUM SIZE When
67. ir cooled In production 1984 94 Replaced by CME650 Ice production Max 630 Ib at 70A 50W AC Ice production Typical 502 Ib at 90A 70W AC Ice production Min 396 Ib at 100A 90W AC Air cooled water use 87 gallons per 24 hours Water use water cooled condenser only 1016 gallons 24 hours BTUs per hour 11700 Refrigerant Type R 502 Refrigerant charge 47 oz for air cooled 42 oz for water cooled and 256 oz for remote Refrigerant pressures End of freeze 210 hi 23 low Harvest 100 low Metering device Two cap tubes Average amps 7 9 single phase Cube count 398 Batch Weight 3 6 Ib Water solenoid valve flow 75 g p m rate Cycle time 14 to 19 minutes 90 70 18 CM855 Modular Cuber Contour cubes Air water or remote air cooled In production from 1987 thru early 1995 Ice production max 800 at 70A 50W AC Ice production typical 623 at 90A 70W AC Ice production min 557 at 100A 90W AC Air cooled water use 124 gallons per 24 hours Water use water cooled condenser only 1162 gallons per 24 hours BTUs per hour 12900 Refrigerant type R 502 Refrigerant charge Air cooled is 52 water cooled is 45 A model or 51 B model Remote is 256 oz Refrigerant pressures 240 hi 28 low j
68. ise Internal parts are worn Internal mounting springs supports have failed Compare to new system High Amps Bearings are worn Check amp draw high amps may indicate worn bearings Winding partially shorted Check resistance of motor Run capacitor inoperative Check run capacitor 124 Hermetic Compressor Diagnostics Runs and pumps but has other operational problems Low Capacity Valve Leak Check amp draw low amps may indicate leaking compressor valves or low charge Other causes for long freeze cycles include hot gas valve leaking thru diny condenser plugged ilters inlet water valve leaking thru TXV with too much superheat Overheats Lack of refrigerant too much superheat Check system check TXV bulb mounting Worn internal parts Check amp draw high amp draw may indicate worn parts Start system problem Check starting components voltage and wiring Winding partially shorted Check resistance of motor Discharging gas into dome of compressor Check system pressures if discharge is over 450 PSIG internal relief valve may have opened Check system Check high pressure cut out Too quiet too cold Not enough superheat overcharged Check system check TXV bulb mounting 125 Hot Gas Valves Design Hot gas valves are selected by flow rate coil voltage and tubing size for each refrigeration system Flow rates that are too small will extend the harvest cycle while flow rat
69. le if a serial number is 999999 07Y the 07Y is the date code January 1992 Machines manufactured after May 2004 use a different code 2 digit 2 digit i i ID Fr v Exampe 04 061320998877 0406 Manufactured June 2004 143 CM Controller Revision 3 pages Rev 9 controllers use began 2 05 provide a new diagnostic procedure that checks two functions of the controller 1 In sequence all the controller s relays are switched on for a certain time to confirm that power is going to the component and that the component is operating 2 At the end of that test the water level sensor is checked The green light display on the controller changes as the float stem is manually moved up and down in the sensor Component Test Sequence 1 Water inlet valve test Verifies that the water inlet solenoid valve opens and water fills the sump Some water may overflow into the bin 2 Water Pump test With water in the sump from the prior test the pump starts and circulates water 3 Purge valve test Purge valve opens to discharge water No effect on overflow models 4 Compressor test Compressor starts hot gas valve open for short time 5 Harvest bypass valve test Compressor on check valve remote systems verify that the harvest by pass valve opens 6 All off test Verifies that the relays open 7 Hot gas valve test Verifies that the hot gas valve opens 8 Fan motor test The fan motor is s
70. ming noise but does not pump 3 Runs pumps but has other operational problems Symptom Possible Cause Check Totally Silent Control system not supplying power to the compressor Check power to the compressor If none check fuse breaker ice machine control system and contactor Motor Overload is open because the compressor motor overheated Check temperature of the compressor dome and check for an open circuit in the compressor If hot see overheats Motor overload is open possibly because starting components have failed If there is power is there power to the start winding If not check the start capacitor and start relay Overload has failed in the open position Check temperature of compressor dome and check for open circuit in the compressor If hot see overheats Compressor motor has open winding Check the windings of the compressor for an open circuit 123 Hermetic Compressor Diagnostics Hums but does not pump Starting components have failed Check the start capacitor and start relay Locked rotor Check the starting components and compressor windings Motor may be running but the valves do not seal or the pistons do not move Check amp draw and system pressures Wired wrong Check wiring of capacitor s and relay Low voltage at compressor Check voltage at compressor before and during attempted start Runs and pumps but has other operational problems No
71. minutes at 100 80 50 CSWl1 Cuber with bin Hot wire grid unit In production since 1983 C model white in 1992 Replaced by CSWET1 in 1995 Ice production 51 35 Ib 24 hr Water use n a BTUs per hour 1600 Refrigerant type R 12 Refrigerant charge 7 02 Refrigerant pressures end 150 high 7 low of the freeze cycle at 90 70 Metering device Cap tube Power consumption 250 300 watts Water solenoid valve flow rate 25 g p m Cycle time 30 40 minutes Same unit as AC50 51 CSWE1 Cuber with bin Hot wire grid unit R 134a Production began 1995 ended 1999 Replaced by CSW45 Ice production 46 32 Ib 24 hr Water use 45 gallons per 24 hours BTUs per hour 1600 Refrigerant type R 134a Refrigerant charge 6 75 oz Refrigerant pressures end of the freeze cycle at 90 60 85 100 high 2 5 low Metering device Cap tube Power consumption 250 300 watts Water solenoid valve flow rate 25 g p m Cycle time 18 22 at 70 60 20 38 at 100 80 in minutes 52 CSW45 15 Wide Platform Production began 1999 Thermistor and electronic circuit board control system Replaced the CSWE1 Ice production 40 36 Ib 24 hr Water use 75 gall
72. ng If not check the power and or transformer Push and hold the Off button until the machine stops 2 Unplug water sensor harness from controller connection 2 3 Set the voltmeter to DC and use a scale low enough to measure less than 40 Volts 4 Measure the voltage between the top and the bottom pins on the controller at connection 2 the bottom is ground or negative e Normal unplugged Black controllers 24 to 30 VDC Blue controllers 5 to 2 VDC If the reading is low check the power supply to the controller or the controller itself If it is roughly 24 30 V proceed to the next step 5 Reconnect the harness Be SURE it is on properly and has a good connection To confirm unplug the harness from the water sensor and redo step 4 at the end of the harness Then plug the harness back onto the sensor 140 Harness Connected Voltage DC 6 At the controller measure the voltage between the top and bottom pins on connection 2 This should be between 2 and 3 5 VDC If it outside this range there is a problem in the sensor and it should be changed out If it is within this range proceed to the next step e Blue to Yellow plugged in Black controllers 2 to 3 5 VDC Blue controllers 4 to 2 VDC 7 Place negative voltmeter probe on the bottom terminal yellow wire Place the other on the one just above it terminate freeze sender white wire Move the float stem stick up and
73. ngle phase 90 70 B series New water cooled condenser Air flow changed to in the side and out the back in 2006 69 FME1500 HP62 R 404A model Air water or remote Production from July 1994 to March 2000 Ice production 1460 910 Ib 24 hr Air cooled water use 133 gallons Water use water cooled 1126 gallons condenser only BTUs per hour 13200 Refrigerant type R 404A Refrigerant charge Air cooled 36 oz Water cooled 24 oz Remote air cooled 208 OZ Refrigerant pressures Air cooled 315 hi 32 low Water cooled 245 hi 32 low Remote 180 hi minimum 28 38 low Metering device TXV superheat 6 to 8 F 90 70 Note FME1500RL production began 1997 uses 21 wide cabinet TO FME1504 AutoSentry model Air water or remote Production began in March 2000 Ice production 1460 910 Ib 24 hr Air cooled water use 133 gallons Water use water cooled 1126 gallons condenser only BTUs per hour 10 000 RL BTUH for cond unit 7250 7000 sizing Refrigerant type R 404A Refrigerant charge Air cooled 36 oz Water cooled 24 oz Remote air cooled 208 OZ Refrigerant pressures Air cooled 315 hi 32 low Water cooled 245 hi 32 low Remote 180 hi minimum 28 38 low Metering device TXV superheat 6 to 8 F
74. on min 1005 at 100A 90W AC Air cooled water use 163 gallons per 24 hours Water use water cooled condenser only 1743 gallons per 24 hours BTUS per hour 24000 Refrigerant type R 502 Refrigerant charge Air cooled 60 oz water cooled 52 oz or 64 oz for units with a receiver remote 256 oz Refrigerant pressures 265 hi 25 low just before harvest Metering device TXV superheat 6 to 8 F Average amps 14 15 Cube count per cycle 995 Batch Weight 13 5 14 5 Ib Water solenoid valve flow 1 g p m rate Cycle time 90 70 14 18 minutes 21 CME250 HP62 R 404A model Production between 1994 and 1996 Air or water cooled Replaced by CME256 Ice production hi 302 at 70A 50W AC Ice production low 234 Ib at 90A 70W AC Air cooled water use 47 gallons per 24 hours Water use water cooled 431 gallons per 24 hours condenser only BTUs per hour 5100 Refrigerant type R 404A Refrigerant charge 27 oz for air cooled 17 oz for water cooled Refrigerant pressures Freeze 220 to 280 hi Water cooled freeze 28 35 low Harvest cycle set at 245 PSIG 160 200 hi 86 100 low Metering device Internally equalized TXV superheat 6 to 8 F Average amps 10 13 freeze 11 14 harvest Cube count per cycle 200 Batch Weight 2 5 3 Ib
75. ons per 24 hours BTUs per hour 1600 Refrigerant type R 134a Refrigerant charge 6 5 oz Refrigerant pressures end of the freeze cycle Low Side 1 4 at 70 60 2 6 at 100 80 High Side 65 80 at 70 60 85 105 at 100 80 Metering device Cap tube Power consumption 250 300 watts Water solenoid valve flow rate 25 g p m Cycle time 18 22 minutes at 70 60 30 38 minutes at 100 80 If the evaporator thermistor is open or not connected to the control board the unit operates with a 20 minute freeze and a 3 minute harvest cycle B series in 2001 compressor change C series in 2002 evaporator amp thermistor change 53 CS55 Cuber with bin one cube size Air cooled In production from 1989 thru 1994 Similar to AC55 Stainless steel cabinet in 1994 Discontinued in 1995 Ice production 55 to 31 Ib per 24 hours Water use 19 gallons per 24 hours BTUs per hour 2100 Refrigerant type R 12 Refrigerant charge 12 oz Refrigerant pressures freeze 125 hi 2 low just before harvest Metering device Cap tube Average amps freeze 4 6 Cubes per cycle 42 Water solenoid valve flow 21 g p m rate Cycle time 90 70 26 minutes 54 CS60 New model in 1995 Replaced the CS55 Stainless steel medium gourmet cube R 2
76. ooled water use 94 gallons Water use water cooled 740 gallons condenser only BTUs per hour 10500 Refrigerant type R 404A Refrigerant charge Air cooled 30 oz Water cooled 24 oz Remote air cooled 208 OZ Refrigerant pressures Air cooled 255 hi 35 low Water cooled 245 hi 35 low Metering device TXV superheat 6 to 8 F Average amps 90 70 Compressor amps 3 phase 2 8 single phase 4 3 NME950RL production began 1997 97 NME954 AutoSentry model Air water or remote Production began in March 2000 There are 2 systems in a NME1854 Ice production 1080 625 Ib 24 hr Air cooled water use 94 gallons Water use water cooled 740 gallons condenser only BTUs per hour 8500 RL BTUH for cond unit 6000 5700 sizing Refrigerant type R 404A Refrigerant charge Air cooled 30 oz Water cooled 24 oz Remote air cooled 208 OZ Refrigerant pressures Air cooled 255 hi 35 low Water cooled 245 hi 35 low Metering device TXV superheat 6 to 8 F Average amps Compressor amps 3 phase 2 8 single phase 4 3 90 70 series New water cooled condenser Air flow changed to in the side and out the back in 2006 98 NME1250 HP62 R 404A model Air water or remote Production from October 1994 to March 2000 Ice production 1345 785
77. p B Ice production 480 to 420 Ib 24 hours Air cooled water use 70 gallons per 24 hours Water use water cooled condenser only 634 gallons per 24 hours BTUs per hour 7000 Maximum Times minutes 45 freeze 14 harvest Suction pressure PSIG 32 36 end of freeze 88 100 peak in harvest Discharge pressure PSIG 236 293 5 min in freeze 204 224 minimum in harvest Refrigerant charge R 404A AC 24 oz WC 17 oz Metering device TXV 2 Superheat 3 to 15 F Average amps 13 freeze 14 harvest Batch Weight 6 5 7 Ib Water valve flow rate 1 25 g p m Water Cooled Cycle time 19 20 minutes 90 70 Air cooled 70 50 amp 90 70 B series New water cooled condenser Air Cooled Cycle Time Detail Air Temperature 5 50 5 40 18 E 50 19 e 70 20 2 80 21 90 22 100 23 506 New 1996 Electronic Controls R 404A refrigerant plastic base Two evaporator primarily a 115 volt model Ice production 500 at 70 50 AC Ice production 395 at 90A 70W AC Air cooled water use 94 3 gallons per 24 hours Water use water cooled 714 gallons per 24 hours condenser only BTUs per hour 7000 Maximum Times 50 freeze 14 harvest minutes Refrigerant charge A D series AC 32 oz WC R 404A 20 oz E series AC 23 o
78. per 24 hours Water use water cooled condenser only 1180 gallons per 24 hours BTUS per hour Air Cooled 18800 Refrigerant type R 404A Refrigerant charge WC 38 oz Remote 336 oz Refrigerant pressures 350 210 hi 24 33 low just before harvest Water cooled discharge is a constant 245 PSIG Metering device TXV plus distributor superheat 6 to 8 F Average amps 9 9 13 6 Water solenoid valve flow 75 g p m rate Batch Weight 8 9 Ib Cycle time 13 21 minutes 90 70 Hi pressure cut out changed to auto reset in 1998 936 CME1056 30 wide modular cuber air water or remote air cooled R 404A unit Production began in 1999 Replaced the CME1002 Ice production range 975 to 800 Ib 24 hr Remote air cooled water use 147 gallons per 24 hours Water use water cooled condenser only 1365 gallons per 24 hours BTUs per hour Air Cooled 15 500 Max cycle times 31 freeze 14 harvest Refrigerant charge AC 44 oz WC 28 oz Remote 208 oz Refrigerant pressures 255 275 hi 25 30 low just before harvest Water cooled discharge is a constant 245 PSIG Metering device TXV plus distributor 5 to 15 F Superheat TXV bulb temp end of 5 F to O F freeze Average amps 10 Water solenoid valve flow 2 7 g p m r
79. porator gearbox added a relay to 83 ND550 Nugget ice maker Dispenser Air or water cooled Production began in 1989 B model with water station in 1992 Ice production 535 335 Ib 24 hr Air cooled water use 70 gallons per 24 hours Water use water cooled condenser only 800 gallons per 24 hours BTUs per hour 8600 Refrigerant type R 502 Refrigerant charge Air cooled 24 ounce Water cooled 18 oz Refrigerant pressures 250 230 hi 30 low Metering device TXV superheat 6 to 8 F Average amps 16 90 70 Agitator portion control and bin drive motor changes 84 ND650 Nugget ice maker dispenser Air or water cooled Production began in 1989 Ice production 620 380 Ib 24 hr Water use ice only 75 gallons per 24 hours Water use water cooled condenser only 972 gallons per 24 hours BTUs per hour 9200 Refrigerant type Refrigerant charge Air cooled 24 ounce Water cooled 18 oz all R502 Refrigerant pressures 250 220 high 30 low Metering device TXV superheat 6 to 8 F Average amps 16 90 70 Agitator portion control and bin drive motor changes 85 ND750 Nugget ice maker Dispenser Air or water cooled Production began in 1989
80. ree phase 8 Batch Weight 16 Ib Cycle time At 70 70 50 12 to 13 minutes At 90 90 70 16 to 17 minutes At 120 110 100 26 to 28 minutes 40 CME1402 48 wide modular cuber Air cooled water cooled or remote air cooled R 404A unit Production from 1995 to 1998 Replaced the CMS1402 Ice production 1240 Ib 24 hr Air cooled water use 231 gallons per 24 hours Water use water cooled condenser only 1648 gallons per 24 hours BTUs per hour 21100 Refrigerant type R 404A Refrigerant charge AC 64 oz WC 62 oz Remote 448 oz w ERC401 Refrigerant pressures 210 315 discharge 30 36 suction just before harvest Water cooled discharge is 245 PSIG Suction in harvest is 77 to 100 PSIG Metering device TXV plus distributor superheat 8 to 10 F Average amps Freeze Single phase 15 17 Three phase 9 11 Average amps Harvest Single phase 15 22 Three phase 9 14 Batch Weight 13 5 14 5 Ib Cycle time 13 18 minutes 90 70 41 CME1656 Modular Cuber Air Cooled Water Cooled or Remote Air Cooled Production began in 1998 Ice production 1650 at 70 50 to 1250 at 90 70 Air cooled water use 225 Water use water 2060 cooled condenser only BTUs per hour 21 500 Max cycle t
81. rigerant charge Air cooled 34 oz Water cooled 28 oz Refrigerant pressures 250 220 high 30 low Metering device TXV superheat 6 to 8 F Average amps 14 3 16 90 70 Changes Black gearmotor and split phase drive motor 101 NSE650 Nugget ice maker with bin Air or water cooled Production from July 1994 to March 2000 Ice production 710 460 16 24 hr Air cooled water use 67 gallons Water use water cooled 590 gallons condenser only BTUS per hour 6600 Refrigerant type R 404A Refrigerant charge Air cooled 25 oz Water cooled 20 oz Refrigerant pressures 250 220 high 33 low Metering device TXV superheat 6 to 8 F Average amps 10 90 70 102 NSE654 AutoSentry Nugget ice maker with bin Air or water cooled Production began March 2000 Ice production 710 460 Ib 24 hr Air cooled water use 67 gallons Water use water cooled 590 gallons condenser only BTUs per hour 7000 Refrigerant type R 404A Refrigerant charge Air cooled 25 oz Water cooled 20 oz Refrigerant pressures 250 220 high 33 low Metering device TXV superheat 6 to 8 F Average amps 10 90 70 B series New water cooled condenser 103 SCE170 Undercounter Cuber Air or Water cool
82. tering device TXV superheat 6 to 8 F Average amps 10 13 90 70 88 NDE750 amp NDE754 HP62 R 404A model Air or water cooled Production between July 1994 and March 2000 NDE754 similar its production was between March 2000 and June 2001 Ice production 720 435 Water use ice only 65 Water use water cooled 599 condenser only BTUs per hour 9700 Refrigerant type R 404A Refrigerant charge Air cooled 32 ounce Water cooled 22 oz Refrigerant pressures 250 220 high 38 low Water cooled discharge pressure at 245 PSIG Metering device TXV superheat 6 to 8 F Average amps 12 13 90 70 89 NM650 Modular nugget ice maker Air water or remote air cooled Production began in 1989 Ice production 745 430 Ib 24 hours Air cooled water use 72 gallons per 24 hr Water use water cooled condenser only 712 gallons per 24 hr BTUs per hour 9500 Refrigerant type R 502 Refrigerant charge Air cooled 34 oz Water cooled 28 oz Remote air cooled 256 OZ Refrigerant pressures Air 310 hi 30 low Cooled Refrigerant pressures 220 hi 28 low Water Cooled Metering device TXV superheat 6 to 8 F Average amps air cooled 15 5 90 70 Changes Black gearmotor an
83. ure 3 Suction pressure converted to temperature n a Superheat 1 3 Record data in rows 1 and 2 Convert row 2 to temperature and record it in row 3 Subtract row 3 from row 1 and enter the data in the superheat row Calculate the average superheat This example is only for one minute s operation Five minute s operation will give a more accurate reading Note Thermometer attachment and insulation is critical in obtaining accurate readings 118 Electrical Suffix Code CODE VOLTAGE CYCLES PHASE 1 115 60 1 2 230 60 1 3 208 230 60 3 4 115 230 60 1 6 230 50 1 7 208 60 1 9 115 208 230 60 3 10 115 208 60 1 31 115 208 230 60 1 32 208 230 60 1 63 230 380 420 50 3 Two voltages separated by a hyphen means that the machine can operate between the two voltages Two voltages separated by a slash means that both voltages are required to operate the machine Usually requires a neutral wire 119 Scotsman Model Identification General Example CME506AS 1F CME 506 A S 1 F Type Relative Cond Finish Elec Series Size Type Ice Maker Dispenser Example MTD5N25AS 1B MD T 5 N 25 Type Disp Type Rel Size Ice Type Bin Size Type e CME is a Modular Cuber the E here means either R 404A or R 134a refrigerant CME506 uses R 4044 e MD is an
84. ust before harvest Metering device TXV superheat 6 to 8 F Average amps 8 Cubes per cycle 597 Batch Weight 8 9 Ib Water solenoid valve flow 1 g p m rate Cycle time 15 23 minutes 90 70 19 CM1000 Modular Cuber Contour cubes Air water or remote air cooled In production from 1986 thru early 1995 Air cooled only in 1991 Ice production max 962 at 70A 50W AC Ice production typical 843 at 90A 70W AC Ice production min 657 at 100A 90W AC Air cooled water use 130 gallons per 24 hours Water use water cooled condenser only 1390 gallons per 24 hours BTUs per hour 16330 Refrigerant type R 502 Refrigerant charge Air cooled is 64 water cooled is 45 A model or 51 B model Remote is 256 oz Refrigerant pressures 260 hi 22 low just before harvest Metering device TXV superheat 6 to 8 F Average amps 9 11 Cube count 597 Batch Weight 8 9 Ib Water solenoid valve flow 1 g p m rate Cycle time 70 50 14 15 minutes Cycle time 90 70 16 17 minutes 90 70 20 CM1400 Modular Cuber Contour cubes Air water or remote In production 1985 1991 Ice production 1392 at 70A 50W AC Ice production typical 1187 at 90A 70W AC Ice producti
85. water use 93 gallons per 24 hours Water use water cooled condenser only 811 gallons per 24 hours BTUs per hour 12500 Refrigerant type R 404A Refrigerant charge Air cooled 36 oz water cooled 27 oz remote 208 oz Refrigerant pressures Water cooled freeze cycle set at 245 PSIG Freeze 300 to 350 hi 25 30 low Harvest 160 200 hi 80 90 low Minimum remote discharge pressure in freeze is 240 PSIG Metering device TXV superheat 6 to 8 F Average amps 8 freeze 9 11 harvest Cube count per cycle 400 Batch Weight 3 6 lb Water solenoid flow rate 75 g p m Cycle time 19 minutes 90 70 15 minutes 70 50 90 70 CME256 New in 1996 Electronic Controls R 404A refrigerant plastic base Single evaporator primarily a 115 volt model Ice production hi 307 Ib at 70A 50W AC Ice production low 240 Ib at 90A 70W AC Air cooled water use 64 8 gallons 24 hours Water use water cooled 468 gallons per 24 hours condenser only BTUs per hour 5500 Maximum Times minutes 50 freeze 10 harvest Refrigerant charge 24 oz for air cooled 14 oz R 404A for water cooled Suction pressure PSIG 25 27 end of freeze 95 105 peak in harvest Discharge pressure PSIG 240 250 5 min in freeze 165 185 minimum in harvest Metering d
86. witched on to verify its operation To start the diagnostic process 1 Push and hold the off button until the unit shuts off 2 Push and hold the off button again until the Purge indicator lights green lights switch on 3 Push and hold the clean button until the bin full light starts to blink that starts the diagnostic The test will begin and end automatically 144 Component Test If all the components operate as listed below the controller passed the test If a component does not operate when it should check its electrical connection Check for open circuit or physical damage If OK refer to the product s wiring diagram and repeat the test with a voltmeter at the controller end of the harness Check with one voltmeter lead on the proper terminal and the other to ground If no voltage is present during the suspect component s turn in the second test the controller needs to be replaced If there is voltage at the controller end but none at the component the harness needs to be replaced Test Seconds On Air or Water Cooled Testing 1 30 Water inlet valve 2 10 Water Pump 3 10 Pump Hot gas valve and purge valve when used 4 5 Hot gas valve compressor 5 15 Compressor 6 5 None 7 10 Hot gas valve 8 5 or 10 Fan motor 10 secs Notes e Remote model s fan motors cycle with compressors e Check Valve Remote models are the CME456R CME1056R CME1356R
87. z WC 14 oz F series AC 23 oz WC 13 oz Suction pressure PSIG 35 37 end of freeze 120 125 peak in harvest Discharge pressure 240 260 5 min in freeze PSIG 165 175 minimum in harvest Metering device TXV plus distributor E series amp higher have two TXVs superheat 3 to 15 F Average comp amps 10 11 freeze 11 12 harvest Batch Weight 6 5 7 Ib Cycle time 23 minutes 90 70 19 minutes 70 50 P 90 70 Panel changes C and E series E series also has 2 TXVs D series has PTCR F series had wc condenser change 28 CME656 New in 1996 Electronic Controls R 404A refrigerant plastic base Two evaporator 230 volt model Ice production 705 to 585 Ib 24 hours Air cooled water use 88 gallons per 24 hours Water use water cooled condenser only 767 gallons per 24 hours BTUs per hour 11 000 Maximum Times minutes 50 freeze 14 harvest Refrigerant charge AC 36 WC 27 Remote 232 w ERC201 280 w ERC402 Air Cooled refrigerant pressures Suction at the end of freeze 26 PSIG Suction peak in harvest 84 88 PSIG Discharge 5 minutes into freeze 215 290 Water cooled freeze cycle set at 245 PSIG Metering device TXV plus distributor superheat 6 to 8 F Average comp amps 7 8 freeze 9 10 harvest Batch Weight 6 5 7 Ib Cycle time 1

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