Hoshizaki dcm-75ibah Manuel d'utilisateur

Hoshizaki“A Superior Degreeof Reliability”www.hoshizaki.comModelsDCM-751BAH(-OS)DCM-751BWH(-OS)Cubelet Icemaker/DispenserHoshizaki America, Inc.SERVIC

10Inlet Water ValveDispense Water ValveDrain ValveFloat SwitchWater LevelTo DrainEvaporatorSpoutThermostatic Expansion ValveGear MotorOverowReservoir

11Inlet Water ValveDispense Water ValveDrain ValveFloat SwitchWater LevelTo DrainEvaporatorSpoutThermostatic Expansion ValveGear MotorOverowReservoir

12II. Sequence of Operation and Service DiagnosisA. Sequence of Operation Flow ChartBC open (BC actuator paddle engaged) "F-A" Control Board

13B. Service Diagnosis WARNING• The appliance should be diagnosed and repaired only by qualied service personnel to reduce the risk of death, electri

147) Startup–"POWER OK" LED is on: Move the power switch to the "ON" position, then move the control switch to the "ICE"

159) Ice Purge Cycle–"GM" LED is on. UFS closes (WV de-energizes) and "WTRIN" LED turns off. 5-sec. GM delay timer and 30-min. FZT

1612) Drain Cycle–"FLUSH" (drain) LED is on. IMPORTANT! Drain valve will not energize unless the safety switch is engaged. The appliance is

1713) Shutdown–Bin lls and ice engages BC actuator paddle. 6 to 10-sec. shutdown sequence begins. Diagnosis: Check that BC actuator paddle is activat

18C. Control Board CheckBefore replacing a CB that does not show a visible defect and that you suspect is bad, always conduct the following check proc

192) 5VDC Output Checks: There are seven 5VDC circuits on the appliance, "DRAIN" position through control switch, high-pressure switch (HPS)

2 WARNINGOnly qualied service technicians should install and service the appliance. To obtain the name and phone number of your local Hoshizaki Certi

20c. Gear Motor Protect Relay (GMPR) CB K9 connector pins #5 (W/O) and #6(W/O): When GMPR is de-energized, GMPR terminals #3 and #5 are open and 5VD

21• 5VDC CB K7 Connector: See Figs. 3, 4, 5, and 6.• Water Dispense Switch/Water Dispense Sensorf. Push Button Model–"WTRDP" LED is on: Befo

22Red positive test lead to red K4 connector pin closest to black K3 connectorFig. 4Red Positive Test LeadBlack Negative Test LeadMultimeter5VDCContro

23• Ice Dispense Switch/Ice Dispense Sensor: h. Push Button Model–"ICE" and "AM" LEDs are on: Before engaging the ice dispense swi

24i. Opti-Serve Model–"ICE" and "AM" LEDs are on: Before engaging the ice dispense Opti-Serve sensor, check for the correct VDC fr

253) Fill Cycle–"WTRIN" LED is on: "WTRIN" LED turns on only when the reservoir water level is low enough to open LFS. Diagnosis:

26D. Bin Control CheckWhen the actuator paddle is not engaged, BC is closed and the appliance produces ice. S1 dip switch 7 must be in the "OFF&q

27E. Float Switch Check and Cleaning1. Float Switch Check1) Remove the front panel and move the control switch to the "DRAIN" position. 2) P

28Red (R) (upper oat switch)Black (BK) (common)Dark Blue (DBU) (lower oat switch)Upper Float (blue)Magnet (towards top)Magnet (towards top)Lower Flo

29F. Diagnostic TablesBefore consulting the diagnostic tables, check for correct installation, proper voltage perappliance nameplate, and adequate wat

3IMPORTANTThis manual should be read carefully before the appliance is serviced. Read the warnings and guidelines contained in this manual carefully a

30No Ice Production - Possible CauseFreeze Cycle1. Control Board a) Defective.2. Start Relay a) Defective.3. Start Capacitor or Run Capacitor a) Defec

312. Ice/Water DispensingIce Dispense-Push Button1. Power Supply a) Off, blown fuse, or tripped breaker.2. Control Board a) Ice dispense switch circui

32III. Controls and Adjustments• A Hoshizaki exclusive control board is employed in the DCM-751 series.• All models are pretested and factory set.• Fo

33Transfor mer Input #7 (W/R)A. Control Board Layout1. DCM-751B_HDrain Valve#10 (W/BU)• K6 Connector Open• "SERVICE" Button (Ice Pu

34Drain Valve#10 (W/BU)• K6 Connector Open• "SERVICE" Button (Ice Purge Cycle Bypass)Transformer 24VAC Input#1 (W/R)Upper Float Switch #

35B. LED Lights and Audible Alarm SafetiesThe "POWER" LED indicates proper control voltage and will remain on unless a control voltage probl

36C. Settings and AdjustmentsNOTICEDip switches are factory set. Failure to maintain factory settings may adversely affect performance and warranty co

374. Continuous Dispensing Timer (S1 dip switch 5 & 6)The dispense mode switch must be in the "CONTINUOUS" position for this setting to

38D. Power Switch, Control Switch, and Dispense Mode Switch The power switch, control switch, and dispense mode switch are used to control the operati

39CONTROLDISPENSE MODE4A1038-014ICEOFFDRAINPORTIONCONTINUOUS3. Dispense Mode Switch The dispense mode switch has 2 positions, "CONTINUOUS" a

4B. Important Notes for Component Replacement ... 42C. Icemaking Unit ...

40IV. Removal and Replacement of Components WARNING• The appliance should be diagnosed and repaired only by qualied service personnel to reduce the r

411. Refrigerant RecoveryThe appliance is provided with refrigerant access valves. Using proper refrigerant practices, recover the refrigerant from th

425) Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigerant service cylinder. Remember to loosen the connection and pu

43Evaporator AssemblyFig. 14Spout BSpout APower SwitchEvaporator AssemblySafety SwitchCONTROLDISPENSE MODE4A1038-014ICEOFFDRAINPORTIONCONTINUOUSExtrud

44C. Icemaking Unit1. Upper Bearing Wear Check To ensure that the bearing inside the extruding head does not exceed the wear tolerance of .02", f

452. Removal and Replacement of Extruding Head1) Move the control switch to the "DRAIN" position and drain all of the water from the evapora

464. Removal and Replacement of EvaporatorNOTICE• Always install a new drier every time the sealed refrigeration system is opened.• Do not replace the

4716) Evacuate the system, and charge it with refrigerant. See the nameplate for the required refrigerant charge.17) Install the new auger assembly wi

4813) Install the lower part of the mechanical seal on the lower housing.14) Lower the evaporator down and secure it to the lower housing.15) Install

49D. Dispense Components1. Dispense Auger and Agitator1) Move the control switch to the "OFF" position, then turn off the power supply. Remo

5Important Safety InformationThroughout this manual, notices appear to bring your attention to situations which could result in death, serious injury,

50V. MaintenanceThe maintenance schedule below is a guideline. More frequent maintenance may be required depending on water quality, the appliance&apo

51VI. Preparing the Appliance for Periods of Non-UseNOTICEWhen storing the appliance for an extended time or in sub-freezing temperatures, follow the

522. On water-cooled model only, remove the water from the water-cooled condenser:1) Make sure the control switch and the power switch are in the &quo

53VII. DisposalThe appliance contains refrigerant and must be disposed of in accordance with applicable national, state, and local codes and regulatio

54Note: We reserve the right to make changes in specications and design without prior notice.AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 115 V 77 LRA 11

55Note: We reserve the right to make changes in specications and design without prior notice.AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 115 V 77 LRA 11

56Note: We reserve the right to make changes in specications and design without prior notice.AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 115 V 77 LRA 11

57Note: We reserve the right to make changes in specications and design without prior notice.AC SUPPLY VOLTAGE 115/60/1 COMPRESSOR 115 V 77 LRA 11

58Note:1. The data not in bold should be used for reference only.2. We reserve the right to make changes in specications and design without prior not

59Note:1. The data not in bold should be used for reference only.2. We reserve the right to make changes in specications and design without prior not

6 WARNING, continued• Children should be properly supervised around the appliance.• Do not climb, stand, or hang on the appliance or allow children or

60** High Pressure SwitchAir-Cooled Model Water-Cooled Model Cut-out412±21 PSIG 384±21 PSIGCut-in327±21 PSIG 284±21 PSIG 00C. Wiring Diagrams1. DCM-75

61** High Pressure SwitchAir-Cooled Model Water-Cooled Model Cut-out412±21 PSIG 384±21 PSIGCut-in327±21 PSIG 284±21 PSIG 002. DCM-751B_H-OS

7I. Construction and Water/Refrigeration Circuit DiagramsA. Construction1. DCM-751BAH(-OS)Storage BinInlet Water ValveReservoirControl BoxAir-Cooled C

82. DCM-751BWH(-OS)Water-Cooled CondenserStorage BinInlet Water ValveReservoirControl BoxSpout CoverEvaporator AssemblyCompressorDispensing MotorAgita

93. Ice Making UnitCubelet CutterAllen Head Cap ScrewGear MotorO-RingMechanical SealExtruding Headand Upper BearingHex Head Bolt with WasherAugerEvapo