Hoshizaki KM-1300SRH User Manual Page 1

NO:73119KM-1300SAHKM-1300SWHKM-1300SRHKM-1300SAH3KM-1300SWH3KM-1300SRH3MODELSSERVICE MANUALHOSHIZAKISTACKABLE CRESCENT CUBERISSUED:Sep. 20, 2004

10KM-1300SRH3We reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTAGE 208-230/60/3AMPERAGE 10.8 A ( 5

112. Condensing UnitURC-12F

12 SPECIFICATIONSMODEL: URC-12FEXTERIORDIMENSIONS (W x D x H)REFRIGERANT CHARGEURC-12FWEIGHTCONNECTIONSREFRIGERANTELECTRICALCONDENSERHEAD PRESSURE CON

13II. General Information1. Construction[a] KM-1300SAH, KM-1300SAH3

14[b] KM-1300SWH, KM-1300SWH3

15[c] KM-1300SRH, KM-1300SRH3

162. Controller Board[a] Solid-State Control1) A HOSHIZAKI exclusive solid-state control is employed in KM-1300SAH, KM-1300SWH,KM-1300SRH, KM-1300SAH3

17(3) High Temperature Safety - 127 ± 7°FThe temperature of the suction line in the refrigerant circuit is limited by the high temperaturesafety. Duri

18The green LED’s 1-4 represent the corresponding relays and energize and sequence5 seconds from initial startup as follows:Sequence Step LED’s on Le

19The dip switches should be adjusted per the adjustment chart published in the Tech Specsbook. 7 & 8 must remain in the OFF position.(Control Pro

2HOSHIZAKI AMERICA, INC.618 Highway 74 SouthPeachtree City, GA 30269Attn: HOSHIZAKI Technical Support DepartmentPhone: 1-800-233-1940 Technical Serv

20 4. Defrost Timer stops counting. Defrost cycle is completed and freeze cycle starts.[c] Sequence1st Cycle 1. Unit energized and Control

212nd Cycle and after with pump drainIMPORTANTFreeze cycle time is limited by the freeze timerfactory setting even if the Float Switch doesnot open.1.

222nd Cycle and after with no pump drainIMPORTANTFreeze cycle time is limited by the freeze timerfactory setting even if the Float Switch doesnot open

23[d] Controls and AdjustmentsThe dip switch is factory-adjusted to the following positions:Switch Nos. 1 and 2:Used for adjustment of the defrost tim

241) Defrost ControlA thermistor (semiconductor) is used for a defrost control sensor. The resistance variesdepending on the suction line temperatures

253) Drain TimerThe drain timer is factory-adjusted and no adjustment is required.SETTING TIMEDip Switch Dip SwitchNo. 3 No. 4 T1 T2OFF OFF 10 seconds

265) Freeze TimerCAUTIONAdjust to proper specification, or the unit may not operate correctly.The freeze timer is factory adjusted and no adjustment i

27 (ii) After the above step (i), disconnect the float switch leads from the controller board within the first5 minutes of the freeze cycle.The unit s

28III. Technical Information1. Water Circuit and Refrigerant Circuit[a] KM-1300SAH, KM-1300SAH3

29[b] KM-1300SWH, KM-1300SWH3

3Please review this manual. It should be read carefully before the icemaker is serviced ormaintenance operations are performed. Only qualified service

30[c] KM-1300SRH, KM-1300SRH3

31Note: Pressure SwitchKM-1300SAHCut-out 412 PSIGCut-in 327 ± 21.3 PSIG+21.302. Wiring Diagrams[a] KM-1300SAH, KM-1300SWHKM-1300SWHCut-out 384

32[b] KM-1300SRHNote: Pressure SwitchCut-out 412 PSIGCut-in 327 ± 21.3 PSIG+21.30

33[c] KM-1300SAH3, KM-1300SWH3Note: Pressure SwitchKM-1300SAH3Cut-out 412 PSIGCut-in 327 ± 21.3 PSIG+21.30KM-1300SWH3Cut-out 384 PSIGCut-in

34[d] KM-1300SRH3Note: Pressure SwitchCut-out 412 PSIGCut-in 327 ± 21.3 PSIG+21.30

353. Timing Chart

36

374. Performance Data[a] KM-1300SAHNote: Pressure data is recorded at 5 minutes into freezing cycle.The data not in bold should be used for reference

38[b] KM-1300SWHNote: Pressure data is recorded at 5 minutes into freezing cycle.The data not in bold should be used for reference only. We reserve th

39[c] KM-1300SRHNote: Pressure data is recorded at 5 minutes into freezing cycle.The data not in bold should be used for reference only. We reserve th

4IV. Service Diagnosis ... 431. No Ice Producti

40[d] KM-1300SAH3Note: Pressure data is recorded at 5 minutes into freezing cycle.The data not in bold should be used for reference only. We reserve t

41[e] KM-1300SWH3Note: Pressure data is recorded at 5 minutes into freezing cycle.The data not in bold should be used for reference only. We reserve t

42[f] KM-1300SRH3Note: Pressure data is recorded at 5 minutes into freezing cycle.The data not in bold should be used for reference only. We reserve t

43IV. Service Diagnosis1. No Ice ProductionProblem Possible Cause Remedy[1] a) Power Supply 1. OFF position. 1. Move to ON position.2. Loose connectio

44Problem Possible Cause Remedy[1] Continued from previous page.j) Water Supply Line 1. Water supply off and water supply cycle does not finish.1. Che

45Problem Possible Cause Remedy[3] c) Overload Protector 1. Bad contacts. 1. Check for continuity and replace.2. Voltage too low. 2. Increase voltage.

46Problem Possible Cause Remedy[5] d) Pump Motor 1. Motor winding opened. 1. Replace.2. Bearing worn out. 2. Replace.3. Wiring to pump motor. 3. Check

472. Evaporator is Frozen UpProblem Possible Cause Remedy[1] a) Float Switch 1. Leads short-circuit or defective switch.1. Check and replace.2. Float

483. Low Ice Production4. Abnormal Ice5. OtherProblem Possible Cause Remedy[1] a) Bin Control Thermostat 1. Set too cold. 1. Adjust warmer.2. Defectiv

49V. Removal and Replacement of ComponentsIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place after theequipment is servic

5I. Specifications1. IcemakerKM-1300SAHAC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V)AMPERAGE 12.6 A ( 5 Min. Freeze AT 104°F / WT 80°

505) Disconnect the vacuum pump, and attach a refrigerant service cylinder to the high-side line.Remember to loosen the connection, and purge the air

513. Removal and Replacement of CompressorIMPORTANTAlways install a new drier every time the sealed refrigeration system is opened. Do notreplace the

5216) Connect the terminals, and replace the terminal cover in its correct position.17) Replace the panels in their correct positions.18) Turn on the

535. Removal and Replacement of Expansion ValveIMPORTANTSometimes moisture in the refrigerant circuit exceeds the drier capacity and freezes upat the

546. Removal and Replacement of Hot Gas Valve and Line ValveCAUTIONAlways use a copper tube of the same diameter and length when replacing the hot gas

557. Removal and Replacement of EvaporatorIMPORTANTAlways install a new drier every time the sealed refrigeration system is opened. Do notreplace the

568. Removal and Replacement of Water Regulating Valve - Water-Cooled ModelOnlyIMPORTANTAlways install a new drier every time the sealed refrigeration

579. Adjustment of Water Regulating Valve - Water-Cooled Model OnlyThe water regulating valve (also called “water regulator”) is factory-adjusted. Noa

5810. Removal and Replacement of Condensing Pressure Regulator (C.P.R.) -Remote Air-Cooled Model OnlyIMPORTANTAlways install a new drier every time th

5911. Removal and Replacement of ThermistorCAUTION1. Fragile, handle very carefully.2. Always use a recommended sealant (high thermal conductive type)

6KM-1300SWHWe reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral

6012. Removal and Replacement of Fan MotorNote: When replacing a fan motor with defective winding, it is recommended that a newcapacitor be installed.

6113. Removal and Replacement of Water Valve1) Turn off the power supply.2) Close the water supply line shut-off valve.3) Remove the front panel.4) Re

627) Remove the closed end connectors from the pump motor leads.8) Remove the two screws and the pump motor bracket.9) Remove the pump housing and che

631. Preparing the Icemaker for Long StorageWARNINGWhen shutting off the icemaker for an extended time, drain out all water from the watertank and rem

64[2] Remove the water from the potable water supply line:1) Remove the front panel. (Except water-cooled model)2) Move the control switch on the con

652. Cleaning and Sanitizing ProceduresIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place after anymaintenance or cleanin

66[a] Cleaning Procedure1) Dilute 27 fl. oz. of the recommended cleaner Hoshizaki “Scale Away” or “LIME-A-WAY”(Economics Laboratory, Inc.) with 5 gal.

6719) Turn on the power supply to fill the water tank with water.20) Turn off the power supply after 3 minutes.21) Remove the front panel, and fully o

68[b] Sanitizing Procedure - Following Cleaning Procedure1) Dilute a 5.25% sodium hypochlorite solution (chlorine bleach) with water (Add 2.5 fl. oz.

693. MaintenanceIMPORTANTThis icemaker must be maintained individually, referring to the instruction manual andlabels provided with the icemaker.1) St

7KM-1300SRHWe reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral

8KM-1300SAH3We reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTAGE 208-230/60/3AMPERAGE 7.8 A ( 5 M

9KM-1300SWH3We reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTAGE 208-230/60/3AMPERAGE 6.9 A ( 5 M