Hoshizaki KM-320MAH Bedienungsanleitung

Hoshizaki “A Superior Degree of Reliability” www.hoshizaki.com Models KM-320MAH KM-320MWH Modular Crescent Cuber Hoshizaki America, Inc. Number: 731

10c) High Temperature Safety - 127 ± 7°F (53 ± 4°C)The temperature of the suction line in the refrigerant circuit is limited by the high temperature s

11The green LEDs 1-4 represent the corresponding relays and energize and sequence 5 seconds from initial startup as follows:Sequence Step LEDTime LED

12The application switch located between relay X3 & X4 must be set to match the original board application. Place this switch in the ALP position

133. Sequence IMPORTANT1. Board never accepts defrost completion signal within the first 2 minutes in defrost cycle.2. Defrost cycle time is limited

142nd Cycle and after with pump drain4. Defrost timer stops counting. Defrost cycle is completed and freeze cycle starts.2. Drain timer stops counting

152nd Cycle and after with no pump drain3. Defrost timer stops counting. Defrost cycle is completed and freeze cycle starts.4. After the first 5 minut

164. Controls and Adjustments The dip switch is factory-adjusted to the following positions:Dip Switch No. 1 2 3 4 5 6 7 8 9 10KM-320MAH OFF OFF OFF

17a) Defrost ControlA thermistor (semiconductor) is used for a defrost control sensor. The resistance varies depending on the suction line temperature

18c) Drain TimerThe drain timer is factory-adjusted, and no adjustment is required.Dip Switch SettingTime (seconds)No. 3 No. 4T1T2OFF OFF 10 150ON OFF

19e) Freeze TimerCAUTIONAdjust to proper specification, or the unit may not operate correctly.The freeze timer is factory adjusted and no adjustment is

2IMPORTANTOnly qualified service technicians should attempt to service or maintain this icemaker. No such service or maintenance should be undertaken u

203) Reconnect the float switch connector to the controller board. After the first 5 minutes of the freeze cycle, disconnect the float switch leads from

21III. Technical InformationA. Water Circuit and Refrigerant Circuit1. KM-320MAH

222. KM-320MWH

23B. Wiring Diagram1. KM-320MAH, KM-320MWHNote: Pressure Switch KM-320MAH Cut-out 412 PSIG Cut-in 327 ± 21 PSIG+210Note: Pressure Switch KM-320MWH

24C. Timing Chart *1 The icemaker does not complete a defrost cycle in the first 2 or 3 minutes. See "II.B.4. Controls and Adjustments."

25*1 The pump motor waits for 2 seconds before starting a drain cycle. See "II.B.4. Controls and Adjustments."*2 The icemaker does not compl

26D. Performance Data1. KM-320MAHNote: Pressure data is recorded at 5 minutes into freeze cycle. The data not in bold should be used for reference onl

272. KM-320MWHNote: Pressure data is recorded at 5 minutes into freeze cycle. The data not in bold should be used for reference only. We reserve the

28IV. Service DiagnosisA. No Ice ProductionProblem Possible Cause Remedy[1] The icemaker will not start.a)Power Supply 1. OFF position. 1. Move to ON

29Problem Possible Cause Remedyj) Water Supply Line 1. Water supply off and water supply cycle does not finish.1. Check and get recommended pressure.2.

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

30Problem Possible Cause Remedyc) Overload Protector 1. Bad contacts. 1. Check for continuity and replace.2. Voltage too low. 2. Increase voltage.3. R

31Problem Possible Cause Remedyd)Pump Motor 1. Motor winding opened. 1. Replace.2. Bearing worn out. 2. Replace.3. Wiring to pump motor. 3. Check for

32Problem Possible Cause Remedyc) Controller Board 1. Defective. 1. See "II.B.5. Checking the Controller Board."[2]All ice formed on evapora

33C. Low Ice ProductionProblem Possible Cause Remedy[1] Freeze cycle time is long.a) See chart A.[3] and check dirty air filter or condenser, ambient o

34V. Removal and Replacement of ComponentsIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place after the equipment is servi

358) If necessary, add any remaining charge to the system through the low-side. Use a throttling valve or liquid dispensing device to add the remainin

36C. Removal and Replacement of CompressorIMPORTANTAlways install a new drier every time the sealed refrigeration system is opened. Do not replace th

37D. Removal and Replacement of DrierIMPORTANTAlways install a new drier every time the sealed refrigeration system is opened. Do not replace the dri

386) Braze the new expansion valve, with nitrogen gas flowing at a pressure of 3 to 4 PSIG.WARNING1. Do not heat the wall. Place a steel barrier for pr

397) Install a new drier.8) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.9) Evacuate the system and charge it with refrigerant. See

4K. Removal and Replacement of Pump Motor ... 42L. Removal and Replacement of Spray Tubes

40H. Removal and Replacement of ThermistorCAUTION1. Fragile, handle very carefully.2. Always use a recommended sealant (High Thermal Conductive Type),

41I. Removal and Replacement of Fan MotorNote: When replacing a fan motor with defective winding, it is recommended that a new capacitor be installed.

42K. Removal and Replacement of Pump Motor1) Turn off the power supply.2) Remove the front panel.3) Remove the base cover.4) Drain the water tank by r

43M. Removal and Replacement of Water Regulating Valve – Water-Cooled Model OnlyIMPORTANTAlways install a new drier every time the sealed refrigeratio

44N. Adjustment Of Water Regulating Valve – Water-Cooled Model OnlyThe water regulating valve (also called "water regulator") is factory-adj

45VI. Cleaning and Maintenance InstructionsIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place after any maintenance or cl

463. Drain the potable water tank:1) Turn off the power supply.2) Move the control switch to the "OFF" position.3) Drain the water tank by r

47B. Cleaning and Sanitizing InstructionsIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place after any maintenance or clea

481. Cleaning Procedure1) Dilute approximately 16 fl. oz. of Hoshizaki "Scale Away" with 3 gal. of warm water. 2) Remove all ice from the eva

4915) Move the control switch to the "ICE" position.16) Close the cleaning valve.Note: The icemaker will not operate unless the cleaning val

5I. SpecificationsA. KM-320MAH (air-cooled)Note: We reserve the right to make changes in specifications and design without prior notice.SPECIFICATION NO

50C. MaintenanceIMPORTANTThis icemaker must be maintained individually, referring to the instruction manual and labels provided with the icemaker.1) S

6AC SUPPLY VOLTAGE 115/60/1AMPERAGE 8.2 A ( 5 Min. Freeze AT 104°F / WT 80°F)MINIMUM CIRCUIT AMPACITY 20 AMAXIMUM FUSE SIZE 20 AAPPROXIMATE ICE PRODU

7II. General InformationA. Construction1. KM-320MAH (air-cooled)Spray TubesWater Supply InletHot Gas ValveExpansion ValveFan Motor DrierCompressorC

82. KM-320MWH (water-cooled)Water RegulatorSpray TubesWater Supply InletHot Gas ValveExpansion Valve DrierCompressorControl Box(shown transparent t

9B. Controller Board1. Solid-State Control•A HOSHIZAKI exclusive solid-state control is employed in KM-320MAH and KM-320MWH Modular Crescent Cubers.•