Hoshizaki 300BAH(-OS) Manuel d'utilisateur

Hoshizaki “A Superior Degree of Reliability” www.hoshizaki.com Models DCM-300BAH(-OS)Cubelet Icemaker/Dispenser Hoshizaki America, Inc. Number: 73189

10B. Sequence of Operation1. Sequence Cycles and ShutdownThe steps in the sequence are as outlined below. When power is supplied, power switch is in t

112. Sequence Flow ChartLegend:BC-bin controlCB-control boardComp-compressorDCT-drain cycle timer (12-hr. timer)DV-drain valveDVT- drain valve timer (

12C. Control Board• A Hoshizaki exclusive control board is employed in Hoshizaki icemakers. • All models are pre-tested and factory adjusted.•For a

13• "POWER" LED (green) (lights when 10.5VAC is supplied to K4 connector pins #1 & #2)• "FLUSH" (drain) LED (X5 Relay)

14Control BoardPart Number 2A2649-01b) DCM-300BAH-OS• K5 Connector #1, 2, 3 Ice Dispense Mode Switch, Portion O

152. LED Lights and ComponentsThe "POWER" LED indicates control voltage and will remain on unless a control voltage problem occurs. For furt

163. Dispense Mode Switch The dispense mode switch has 2 positions, "CONTINUOUS" and "PORTION." a) CONTINUOUSWhen the dispense mod

17III. Technical InformationA. Water Circuit and Refrigeration CircuitInlet Water ValveDispense Water ValveDrain ValveFloat SwitchWater LevelTo DrainE

18*B. Wiring Diagrams1. DCM-300BAH * High-Pressure SwitchCut-out412±21 PSIGCut-in327±21 PSIG0

192. DCM-300BAH-OS * High-Pressure SwitchCut-out412±21 PSIGCut-in327±21 PSIG0*

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

20C. Performance Data1. DCM-300BAH(-OS)APPROXIMATE AmbientICE PRODUCTION Temp. (°F)PER 24 HR. 70 321 146307 139 291 13280 277 125 263 119 249 11390 2

21IV. Service Diagnosis WARNING•Thisicemakershouldbediagnosedandrepairedonlybyqualiedservicepersonnel to reduce the risk of death, electr

227) Startup – Move the power switch to the "ON" position, then move the control switch to the "ICE" position to start the automat

239) Ice Purge Cycle – "GM" LED is on. GM and GMPR energize. 60-sec. ice purge timer starts. GM runs for 60 sec. to clear any ice from the e

2412) Drain Cycle – "FLUSH" (drain) LED is on. The icemaker drains the evaporator and reservoir once every 12 hr. A manual drain is provided

25if defective. If 24VAC is present, check for 24VAC at GMPR terminal #2 (P wire) to a neutral (LBU wire). If 24VAC is not present, check GMPR continu

26C. Control Board CheckBefore replacing CB that does not show a visible defect and that you suspect is bad, conduct the following CB check. This proc

27•IcemakingControlCircuit:TheicemakingcontrolcircuitconsistsofWCR,CS,andBC. The icemaking control circuit activates once UF/S closes. On

28b) Opti-Serve Model – "ICE" and "AM" LEDs are on: (1) "CONTINUOUS" Mode: Before engaging the ice dispense Opti-Serve

29•WaterDispenseSwitch/WaterDispenseSensora) Push Button Model: The water dispense button and DispWV are not associated with CB. Engage the wate

3CONTENTSImportant Safety Information ... 5I. Specicati

308) Drain Cycle – "FLUSH" (drain) LED is on: 12-hr. DCT terminates or CS is moved to "DRAIN" position. 150-sec. shutdown sequence

31D. Bin Control Check1) Remove the front and top panels.2) Remove the storage bin cover. If necessary, dispense ice so that the BC actuator is not en

32E. Float Switch Check and Cleaning1. Float Switch Check1) Remove the front panel, then make sure the power switch is in the "ON" position.

332. Float Switch CleaningDepending on local water conditions, scale may build up on F/S. Scale on F/S can cause inconsistent operation of UF/S and LF

34F. Diagnostic ChartsBefore consulting the diagnostic charts, check for correct installation, proper voltage per unit nameplate, and adequate water p

35Ice Purge Cycle1. Control Board a) No power to gear motor.2. Gear Motor a) External protector (gear motor overload) open. b) Internal protector open

362. Ice/Water DispenseIce Dispense Push Button1. Power Supply a) See "Startup."2. Control Board a) Ice dispense switch circuit open or no p

373. Opti-Serve (OS) SensorsBe sure to check all items in section "IV.F.2. Ice/Water Dispense" prior to using this chart. Use the following

38V. Removal and Replacement of Components WARNING•Thisicemakershouldbediagnosedandrepairedonlybyqualiedservicepersonnel to reduce the ri

391. Refrigerant RecoveryThis icemaker is provided with refrigerant access valves. Using proper refrigerant practices, recover the refrigerant from th

4IV. Service Diagnosis ... 21A. Ice Production

404) Close the low-side valve and high-side valve on the gauge manifold.5) Disconnect the gauge manifold hose from the vacuum pump and attach it to a

41Fig. 2Extruding Head and Upper BearingEvaporatorAllen Head Cap Screw with Washer Allen Head Cap ScrewHousing and Lower BearingGear MotorSpline Coup

421. Upper Bearing Wear Check To ensure that the bearing inside the extruding head does not exceed the wear tolerance of .02", follow the instruc

439) Move the power switch to the "ON" position, then replace the panels in their correct positions.10) Turn on the power supply, then move

443) Remove the apron panel, then remove the left side panel.4) Recover the refrigerant and store it in an approved container.5) Remove the front cove

455. Removal and Replacement of Mechanical Seal and Lower Housing 5a. Mechanical Seal1) Move the control switch to the "DRAIN" position and

466. Removal and Replacement of Gear Motor1) Move the control switch to the "DRAIN" position and drain all of the water from the evaporator.

477. Dispense Auger and Agitator1) Move the control switch to the "OFF" position, then turn off the power supply. Remove the front and top p

48VI. Cleaning and MaintenanceThis icemaker must be cleaned and maintained in accordance with the instruction manual and labels provided with the icem

49A. Cleaning and Sanitizing InstructionsHoshizaki recommends cleaning and sanitizing this icemaker at least twice a year. More frequent cleaning and

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

509)Inbadorseverewaterconditions,cleantheoatswitchassemblyasdescribedbelow.Otherwise, continue to step 10.a.Removetheoatswitchas

519) Move the control switch to the "ICE" position. Open the icemaker water supply line shut-off valve to supply water to the reservoir.10)

528) Remove the spout cover, ice dispense spout, and water dispense nozzle. See Fig. 7. 9) Immerse the agitator, dispense auger, and parts removed in

53B. MaintenanceThe maintenance schedule below is a guideline. More frequent maintenance may be requireddependingonwaterquality,theicemaker&apos

54C. Preparing the Icemaker for Periods of Non-UseNOTICEWhen storing the icemaker for an extended time or in sub-freezing temperatures, follow the ins

55VII. DisposalThis icemaker contains refrigerant and must be disposed of in accordance with applicable national, state, and local codes and regulatio

6NOTICE•Followtheinstructionsinthismanualcarefullytoreducetheriskofcostlywaterdamage.•Inareaswherewaterdamageisaconcern,instal

7I. SpecicationsA. Icemaker1. DCM-300BAH(-OS)Note: We reserve the right to make changes in specications and design without prior notice.AC SUPPLY VO

8CONTROLDISPENSE MODE4A1038-014ICEOFFDRAINPORTIONCONTINUOUSII. General InformationA. Construction1. IcemakerStorage BinInlet Water ValveReservoirContr

92. Icemaking UnitCutterSeal Bolts and WashersGear MotorSpline CouplingO-RingMechanical SealExtruding Head and Upper BearingAugerEvaporator Housing an