Scotsman MV 12 Скачать руководство пользователя страница 28

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Page 28

SERVICE DIAGNOSIS

SYMPTOM

POSSIBLE CAUSE

CORRECTION

Low ice capacity.

High discharge pressure

Evacuate and weigh

due to not-condensable

in charge.

or overcharge.

Inefficient compressor.

Replace.

Condenser dirty.

Clean.

Low water flow

Check and repair.

(Water-cooled).

High air temperature

Check temperature of air

(air-cooled).

entering condenser.

Machine makes irregular ice.

Low water supply.

Check Float valve not
mantaining proper water level
in reservoir.

Plugged water distributor.

Clean water distributor.

TXV supertheat wrong.

Adjust or replace.

Refrigerant charge low.

Adjust-check for leak.
recharge.

Содержание MV 12

Страница 1: ...Page 1 Page 1 SERVICE MANUAL MV 12 MV 21 MV 32 MV 50 R 404 A VERSION Electronic modular cubers MS 1000 24 REV 03 00...

Страница 2: ...the electrician Electrical connections 13 START UP Start up 15 16 OPERATION Refrigeration during freeze 17 Water system 18 Refrigeration system during harvest 19 Water system 19 Control sequence 20 S...

Страница 3: ...periodic maintenance as outlined on page 29 of this manual ice making capacity 130 110 90 70 50 Kg 32 C 27 15 10 AIR COOLED MODELS WATER TEMPERATURE AMBIENT TEMPERATURE C 10 21 32 38 WATER COOLED MODE...

Страница 4: ...NS Water req lt 24 HR Model Basic electr amps Start amps watts Electric power cons Kwhx24 HR N of wires Amps Fuse 220 240 50 1 MV 12 AS Air 190 MV 12 WS Water 1200 MV 12 AS MV 12 WS 4 0 3 8 20 20 750...

Страница 5: ...c maintenance as outlined on page 29 of this manual ice making capacity 220 200 180 160 140 120 Kg 32 C 27 21 15 10 AIR COOLED MODELS WATER TEMPERATURE AMBIENT TEMPERATURE ICE PRODUCED PER 24 HRS C 10...

Страница 6: ...E SPECIFICATIONS Water req lt 24 HR Model Basic electr amps Start amps watts Electric power cons Kwhx24 HR N of wires Amps Fuse 220 240 50 1 MV 21 AS Air 380 MV 21 WS Water 1800 MV 21 AS MV 21 WS 6 5...

Страница 7: ...maintenance as outlined on page 29 of this manual ice making capacity 330 300 270 240 210 180 K g 32 C 27 21 15 10 AIR COOLED MODELS WATER TEMPERATURE AMBIENT TEMPERATURE ICE PRODUCED PER 24 HRS C 10...

Страница 8: ...Cond unit Finish Comp HP MV 32 MACHINE SPECIFICATIONS Water req lt 24 HR Model Basic electr amps Start amps watts Electric power cons Kwhx24 HR N of wires Amps Fuse 220 240 50 1 MV 32 AS MV 32 WS 9 0...

Страница 9: ...c maintenance as outlined on page 29 of this manual ice making capacity AIR COOLED MODELS AMBIENT TEMPERATURE ICE PRODUCED PER 24 HRS WATER COOLED MODELS AMBIENT TEMPERATURE ICE PRODUCED PER 24 HRS C...

Страница 10: ...nd unit Finish Comp HP MV 50 MACHINE SPECIFICATIONS Water req lt 24 HR Model Cubes per harvest 578 Full 1156 Half With water at 15 C WATER INLET WATER COOLED ONLY MV 50 AS MV 50 WS Basic electr 400 50...

Страница 11: ...190 the MV 21 32 stack onto SCOTSMAN bin model B 390 while the model MV 50 onto bin B 550 Refrigerant R 404 A Charge per nameplate rating STANDARD LEGS Furnished with storage bin Fourlegsscrewintomoun...

Страница 12: ...tears in the machine mounting gasket with food grade silicone sealant ICE MACHINE The use of a mechanical lift is recommended for lifting the uncrated icemaker onto the bin Remove front top and sides...

Страница 13: ...rompt reached Undersized wiring or unproperly installed electrical circuit will result in major problems and malfunctions Voltagevariationsshoudnotexceedtenpercent IMPORTANT All plumbing and electrica...

Страница 14: ...5 bar 7 Have the compressor holddown bolts been checked to be sure the compressor is snug on the mounting pads 8 Check all refrigerant lines and conduit lines to gard against vibration and possible fa...

Страница 15: ...so to avoid any possibility to such air cavitation NOTE Do not remove the evaporator deflector cover as it will cause the switching off of the machine at STORAGE BIN FULL 4 First freezing time will r...

Страница 16: ...ions about the ice maker by the owner and inform the owner himseft of the name and telephone number of the authorized service agency serving him NOTE To assure a correct operation of the machine the w...

Страница 17: ...ostatic expansion valve meters how much liquid refrigerant is to be allowed into the evaporator section of the refrigeration system This is determined by the temperature of the TXV sensing bulb locate...

Страница 18: ...orator cells Most of the water returns to the reservoir to be sucked back into the pump and repumped over the evaporator WATER SYSTEM A mechanical float valve is used to control the level of the water...

Страница 19: ...ing the harvest cycle the electric water drain valve is energized thereby opening the drain line All water remained in the reservoir at the end of freezing cycle is pumped out to the waste through the...

Страница 20: ...es 40 minutes At this point the unit initiates the defrost cycle The hot gas circulating into the evaporator serpentine causes a slight melting of ice cubes whichgetreleasedfromtheirmolds Onceentirely...

Страница 21: ...pressor amps will still decline as the machine freezes ice Disch Disch Suction Suction Amp Amp pressure pressure pressure pressure compr compr freeze freeze Beginning End Beginning End max min freeze...

Страница 22: ...ectors for the sensors switches condenser sensor BLACK two magnetic switches BLUE ice thickness sensor RED of two jumpers one J1 for the selection betweenmodelsMV21 32 onemagneticswitch and the model...

Страница 23: ...ining water from the sump reach in mineral salts 3 Compressor Contactor Located in the control box the compressor contactor functions to carry the compressor line current The contactor is wired to rec...

Страница 24: ...rom compressor 4 Isolate parts to be opened from rest of the system 5 Remove compressor mounting bolts Reverse to reassemble CONDENSER AIR COOLED 1 Removebothsidepanelsandremovescrews of condenser bra...

Страница 25: ...ke the frame of the evaporator plate The evaporator plate is now free To replace the evaporator plate reverse the removal procedures See nameplate Weight in proper charge of R 404 A in liquid phase WA...

Страница 26: ...rosting switch two on MV 50 F Led card G Electronic card H Fan motor one on MV 12 and MV 50 K Water pump L Water dischargue electrovalve M Gas electrovalve N Max pressure switch O Max pressure switch...

Страница 27: ...ration of fan motor s and condenser sensor Warning Red LIGHT ON Too high condensing pressure Check for correct operation of fan motor s No warning LED LIGHT ON P C Board inoperative Remove board and c...

Страница 28: ...lace Condenser dirty Clean Low water flow Check and repair Water cooled High air temperature Check temperature of air air cooled entering condenser Machine makes irregular ice Low water supply Check F...

Страница 29: ...openPosition for more that 30 shold cause the ice maker to shut off Once the evaporator deflector is released in its closed position the ice maker will restart 8 Check cube size adjust if required thr...

Страница 30: ...ellow LED 7 Pushing the RESET BUTTON for 6 8 seconds the machine restarts in the freezing cycle 8 Replace the evaporator cover deflector and front panel 9 Check the next batch of cubes to be sure all...

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