Hoshizaki F-801MAH/-C User Manual

SERVICE MANUAL June 7, 2004MODELHOSHIZAKIMODULAR FLAKERF-801MAH/-CF-801MWH/-C 73113 June 15, 2005ISSUED:NO:REVISED:

10F-801MWH/-CWater SupplyInletJunction BoxWaterRegulatorCompressorDrierControl Water ValveBin ControlIce ChuteEvaporatorExpansionValveFlush WaterValve

112. Control Box LayoutF-801MAH/-CNote: The above component names are identical with the wiring label, but not withthe parts list.PRESSURESWITCHCONNEC

12F-801MWH/-CPRESSURESWITCHCONNECTORSTARTCAPACITORRUNCAPACITORWATER CONTROL RELAYTRANSFORMERGEARMOTORRELAYFLUSHICEGEAR MOTORPROTECT R

13III. Technical Information1. Water Circuit and Refrigeration CircuitF-801MAH/-C

14F-801MWH/-C

152. Wiring DiagramsF-801MAH/-C, F-801MWH/-C

163. Sequence of Electrical Circuit[a] When power switch is moved to “ON” position and flush switch to “ICE” position, water starts to be supplied

17[b] When reservoir has been filled, gear motor starts immediately.

18[c] Compressor starts about 60 sec. after gear motor starts.

19[d] Bin control operates, and about 6 sec. later, compressor and gear motor stopsimultaneously.

2IMPORTANTOnly qualified service technicians should attempt to service or maintain thisicemaker. No service or maintenance should be undertaken until

20[e] Low water (except water-cooled model).

21[f] Low water (water-cooled model), or dirty air filter (air-cooled model), pressure switch to “OPEN”, compressor and gear motor operate in

22[g] When flush switch is moved to “FLUSH” position, flush water valve opens and flushes reservoir and evaporator.

23[h] When flush timer operates (for 15 min. every 12 hours).

24[i] When 208-230V are supplied to circuit protect relay, it protects the circuit from miswiring. If the power supply is properly connected, the

25[j] When input voltage is too low, (less than 70%), gear motor fuse (1.5A) is blown causing the compressor and gear motor to turn off immed

26Miswiring. Circuit Protect Relay operates.)Proper wiring. The unit starts.BIN CONTROLOFF ON1. CIRCUIT PROTECTRELAY2. WATER LEVEL3.

271. CIRCUIT PROTECTRELAY2. WATER LEVEL3. FLOATSWITCHUPPERLOWER4. WATER CONTROLRELAY5. CONTROL WATERVALVE6. FLUSH TIMER7. FLUSH SWITCH8. FLUSH

281. CIRCUIT PROTECTRELAY2. WATER LEVEL3. FLOATSWITCHUPPERLOWER4. WATER CONTROLRELAY5. CONTROL WATERVALVE6. FLUSH TIMER7. FLUSH SWITCH8. FLUSH

295. Performance DataF-801MAHWe reserve the right to make changes in specifications and design without prior notice.APPROXIMATE Ambient Water Temp. (

3CONTENTSI. Specification ... 51. I

30F-801MWHWe reserve the right to make changes in specifications and design without prior notice.APPROXIMATE Ambient Water Temp. (F)ICE PRODUCTION Te

31F-801MAH-CWe reserve the right to make changes in specifications and design without prior notice.APPROXIMATE Ambient Water Temp. (F)ICE PRODUCTION

32F-801MWH-CWe reserve the right to make changes in specifications and design without prior notice.APPROXIMATE Ambient Water Temp. (F)ICE PRODUCTION

33IV. Adjustment of Components1. Adjustment of Water Regulating Valve (water-cooled model only)The water regulating valve or also called “water regula

342. Adjustment of Flake SizeTo adjust the flake size, change the direction of the cutter head on the top of the auger,according to the following proc

35V. Service Diagnosis1. No Ice ProductionPROBLEM POSSIBLE CAUSE REMEDY[1] The icemaker willnot start.a) Power Supply 1. OFF position. 1. Move to ON p

36PROBLEM POSSIBLE CAUSE REMEDY[4] Water has beensupplied, Fan Motorstarts, but GearMotor andCompressor will notstart.a) Gear Motor Fuse(BUSSMAN GMD1.

372. Low Ice ProductionPROBLEM POSSIBLE CAUSE REMEDY[1] Low ice production a) Refrigerant Line 1. Gas leaks. 1. See "1. [5] a)Refrigerant Line.&q

383. OtherPROBLEM POSSIBLE CAUSE REMEDY[1] Abnormal noise a) Fan Motor 1. Bearing worn out. 1. Replace.2. Fan blade deformed. 2. Replace fan blade.3.

39VI. Removal and Replacement of Components1. Service for Refrigerant Lines[a] Refrigerant RecoveryThe icemaker unit is provided with two refrigerant

45. Removal and Replacement of Expansion Valve ... 436. Removal and Replacement of Water Regulat

404) Close the low-side valve and high-side valve on the service manifold.5) Disconnect the vacuum pump, and attach a refrigerant service cylinder t

413. Removal and Replacement of CompressorIMPORTANTAlways install a new drier every time the sealed refrigeration system isopened. Do not replace the

4214) Evacuate the system, and charge it with refrigerant. For the air-cooled and water-cooledmodels, see the nameplate for the required refrigerant c

435. Removal and Replacement of Expansion ValveIMPORTANTSometimes moisture in the refrigerant circuit exceeds the drier capacity andfreezes up at the

446. Removal and Replacement of Water Regulating Valve(water-cooled model only)IMPORTANTAlways install a new drier every time the sealed refrigeratio

457. Removal and Replacement of Evaporator Assembly1) Turn off the power supply.2) Remove the panels.3) Move the flush switch to the "FLUSH"

4613) Recover the refrigerant and store it in an approved container, if required by an applicablelaw.IMPORTANTAlways install a new drier every time th

4726) Assemble the removed parts in the reverse order of the above procedure.WARNINGBe careful not to scratch the surface of the O-ring, or it may cau

48AugerMechanicalSealO-ringBearing- LowerBoltWasherCoupling- SplineRubber O-ringNylon RingBoltWasherCutterExtrudingHeadWasherSocket HeadCap ScrewEvapo

498. Removal and Replacement of Fan Motor1) Turn off the power supply and remove the panels.2) Remove the wire connectors from the fan motor leads.3)

5I. Specification1. IcemakerF-801MAHWe reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTAGE 115/60/1

5010. Removal and Replacement of Flush Water Valve1) Turn off the power supply, remove the panels and close the water supply line shut-offvalve.2) Rem

51VII. Cleaning and MaintenanceIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place afterany maintenance or cleaning is don

52[Water-Cooled Models]1) Turn off the power supply and wait for 3 minutes.2) Turn on the power supply and wait for 20 seconds.3) Close the water supp

53[b] Cleaning ProcedureThe cleaning process will remove lime deposits from the water system.1) Remove the front panel and top panel, then turn off th

54[c] Sanitizing SolutionDilute 2.5 fl. oz. (74 ml or 5 tbs) of IMS-II Sanitizer or a 5.25% sodium hypochlorite solution(chlorine bleach) with 5 gallo

5514) Replace all parts in their correct positions.IMPORTANTWhen installing the baffles, make sure that the bent surface (the one without thestuds) fa

5616) When the gear motor starts, remove the front panel and turn off the power supply.17) Drain out all water from the water line. See 2) and 3).18)

573. MaintenanceIMPORTANT1. This icemaker must be maintained individually, referring to the instructionmanual and labels provided with the icemaker.2.

583) Air Filter (air-cooled model only)A plastic mesh air filter removes dirt or dust from the air, and keeps the condenserfrom getting clogged. As th

6F-801MWHWe reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 120 V 8.5 RLA 51

7F-801MAH-CWe reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 120 V 9.4 RLA

8F-801MWH-CWe reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 120 V 8.5 RLA

9II. General Information1. ConstructionF-801MAH/-CWater SupplyInletJunction BoxCondenserFan MotorCompressorDrierControl Water ValveBin ControlIce Chut