Hoshizaki KML "F" SERIES User Manual

HOSHIZAKIMODULAR CRESCENT CUBERSERVICE MANUALKML “F” SERIESKML “H” SERIESMODELSNO.:ISSUED:REVISED:AUG. 18, 1999JAN. 13, 200473085

105. KML-350MAH

10011. REMOVAL AND REPLACEMENT OF THERMISTORCAUTION1. Fragile, handle very carefully.2. Always use a recommended sealant (High Thermal Conductive Type

10110) Secure the insulation using the Plastic Cable Ties.11) Connect the Thermistor leads through the bushing of the Control Box to the K3Connector o

10213. 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) R

10315. REMOVAL AND REPLACEMENT OF SPRAY TUBES1) Turn off the power supply.2) Remove the Front Panel and the Insulation Panel.3) Remove the Rubber Hose

104VI. MAINTENANCE AND CLEANING INSTRUCTIONSIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place afterany maintenance or c

105[2] Remove the water from the potable water supply line:1) Turn off the power supply and remove the Front Panel.2) Move the Control Switch, on the

106MODEL WATER "SCALE AWAY" WATER SANITIZERgal. fl. oz. gal. fl. oz.KML-250 2 10.5 2 1KML-350 2 10.5 2 1KML-450 2 10.5 2 1KML-600 2.5 13.5 2

1075) Place the Control Switch in the “SERVICE” position. Then place the Service Switch in the “DRAIN” position.6) Replace the Front Panel and tur

1083. SANITIZING PROCEDURE - Following Cleaning Procedure1) Dilute a 5.25% Sodium Hypochlorite solution (chlorine bleach) with water (Add 1.0 fl.

1094. MAINTENANCEIMPORTANTThis icemaker must be maintained individually, referring to the instructionmanual and labels provided with the icemaker.1) S

116. KML-350MWH (Beginning serial #L00001J, ending Serial #M20060C)

127. KML-350MWH (Beginning serial #M30061E)

138. KML-450MAF

149. KML-450MWF

1510. KML-450MAH

1611. KML-450MWH (Beginning Serial #L00001D, ending Serial #M10530B)

1712. KML-450MWH (Beginning Serial #M20531D)

1813. KML-600MAF

1914. KML-600MWF

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

2015. KML-600MRF

2116. KML-600MAH

2217. KML-600MWH (Beginning Serial #L00001D, ending Serial #M10115C)

2318. KML-600MWH (Beginning Serial # M10121E)

2419. KML-600MRH

2520. CONDENSER UNITURC-7FUnit: mm. (inches)

26SPECIFICATIONSURC-7F

27II. GENERAL INFORMATION1. CONSTRUCTION[a] KML-250MAH, KML-350MAF, KML-350MAH, KML-450MAF, KML-450MAHSpray TubesWater SupplyInletJunction BoxCondens

28[b] KML-250MWH, KML-350MWF, KML-350MWH, KML-450MWF, KML-450MWHSpray TubesWater SupplyInletJunction BoxControl BoxDrierHot Gas ValveCompressorWaterRe

29Spray TubesWater SupplyInletJunction BoxCondenserCondenserFan MotorControl BoxDrierHot Gas ValveCompressorFloat SwitchControl SwitchWater PumpExpans

3 • Please review this manual. It should be read carefully before the icemaker is servicedor maintenance operations performed. Only qualified servi

30[d] KML-600MWF, KML-600MWHSpray TubesJunction BoxWaterRegulatorControl BoxDrierHot Gas ValveFloat SwitchControl SwitchWater PumpExpansionValveCompre

31[e] KML-600MRF, KML-600MRHSpray TubesJunction BoxReceiverTankControl BoxDrierHot Gas ValveFloat SwitchControl SwitchWater PumpExpansionValveCompress

322. CONTROLLER BOARD[a] SOLID-STATE CONTROL1) A HOSHIZAKI exclusive solid-state control is employed in Modular Crescent Cubers.2) A Printed Circuit B

332) Defrost TimerThe defrost cycle starts when the Float Switch opens and completes the freeze cycle.But the Defrost Timer does not start counting un

34The green LED’s 1-4 represent the corresponding relays and energize and sequence 5seconds from initial start-up as follows:Sequence Step LED’s on L

35(Control Products HOS-001A Board)The application switch located between relay X3 & X4 must be set to match the originalboard application. Place

36[c] SEQUENCE1st Cycle1. Unit energized and Control Switch to “ICE” position. Water supply cycle starts.2. After 1 minute, Defrost cycle start

372nd Cycle and after with pump drainIMPORTANTFreeze cycle time is limited to 60 minutes evenif Float Switch does not open.1. Float Switch opens and s

38IMPORTANTFreeze cycle time is limited to 60 minutes evenif Float Switch does not open.2nd Cycle and after with no pump drain1. Float Switch opens an

39[d] CONTROLS AND ADJUSTMENTSThe Dip Switch is factory-adjusted to the following positions:FOR MODELS WITH THERMOSTAT:Switch Nos. 1 and 2:Used for ad

4III. TECHNICAL INFORMATION...471. WATER CIRCUI

401) Defrost ControlA thermistor (Semiconductor) is used for a defrost control sensor. The resistancevaries depending on the Suction Line temperature

413) Drain TimerThe Drain Timer is factory-adjusted, and no adjustment is required.SETTING TIMEDip Switch Dip SwitchNo. 3 No. 4 T1 T2OFF OFF 10 second

426) Bin ControlMODELS WITH THERMOSTATCAUTIONWhen the ambient temperature is below 45°F, the Bin Control Thermostatoperates to stop the icemaker even

43(iv) After Step (iii), de-energize the unit and confirm that the Defrost Timer is in theminimum position. Disconnect the resistor from the Controll

443. SWITCHESTwo control switches are used to control operation in the KML Series Modular CrescentCubers. These switches are referred to as the “Cont

454. MECHANICAL BIN CONTROL (THESE INSTRUCTIONS NOT APPLICABLE TO MODELS WITH THERMOSTAT)[a] PROXIMITY SWITCH1) This machine uses a lever-actuat

46[c] TROUBLESHOOTING (MECHANICAL BIN CONTROL ONLY)1) Machine will not start(i) Move dip switch No. 7 to the “OFF” position. If the machine starts

47III. TECHNICAL INFORMATION1. WATER CIRCUIT AND REFRIGERANT CIRCUIT[a] KML-250MAHKML-350MAF, KML-350MAHKML-450MAF, KML-450MAHKML-600MAF, KML-600MAH

48[b] KML-250MWHKML-350MWF, KML-350MWHKML-450MWF, KML-450MWHKML-600MWF, KML-600MWH

49[c] KML-600MRF, KML-600MRH

5[h] KML-450MAF ...72[i] KML-45

502. WIRING DIAGRAMS[a] KML-250MAH (Beginning Serial #L00001E, ending Serial #M10460F; KML-250MWH (Beginning Serial #L10001K, ending Seri

51Note: KML-250MAH Pressure SwitchCut-out 412.5 PSIGCut-in 327 ± 21.3 PSIG[b] KML-250MAH (Beginning Serial #M20461G); KML-250MW

52[c] KML-350MAF and KML-350MWFNote: KML-350MAF Pressure SwitchCut-out 412.5 PSIGCut-in 327 ± 21.3 PSIGKML-350MWF Pressure SwitchCut-out

53[d] KML-350MAH (Beginning Serial #L00001L, ending Serial #M10290F); KML-350MWH (Beginning Serial #L00001J, ending Serial #M30080F)Note: KML

54[e] KML-350MAH (Beginning Serial #M20291G); KML-350MWH (Beginning Serial #M40081G)Note: KML-350MAH Pressure SwitchCut-out 412.5

55Note: KML-450MAF Pressure SwitchCut-out 412.5 PSIGCut-in 327 ± 21.3 PSIG[f] KML-450MAF and KML-450MWFKML-450MWF Pressure SwitchCut-out

56[g] KML-450MAH (Beginning Serial #L00101C, ending Serial #L00950G); KML-450MWH (Beginning Serial #L00001D, ending Serial #L00200G)Note:

57[h] KML-450MAH (Beginning Serial #L20951H, ending Serial #M12770F); KML-450MWH (Beginning Serial #L10201H, ending Serial #M20710F)Note: KML

58[i] KML-450MAH (Beginning Serial #M22771G); KML-450MWH (Beginning Serial #M30711G)Note: KML-450MAH Pressure SwitchCut-out 412.5 PS

59+21.3- 0+21.3- 0Note: KML-600MWF Pressure SwitchCut-out 384 PSIGCut-in 284.5 ± 21.3 PSIGKML-600MAF, MRF Pressure SwitchCut-out 412.5

6I. SPECIFICATIONS1. KML-250MAH

60[k] KML-600MAH (Beginning Serial #L00001F, ending Serial #L00070F); KML-600MWH (Beginning Serial #L00001D, ending Serial #L00080E); K

61[l] KML-600MAH (Beginning Serial #L10071H, ending Serial #M10460G); KML-600MWH (Beginning Serial #L10081K, ending Serial #M10140E); KML-60

62[m] KML-600MAH (Beginning Serial #M2_ _ _ _ _); KML-600MWH (Beginning Serial #M20141F); KML-600MRH (Beginning Serial #M20331E)Note: KM

63**3. TIMING CHARTControlSw. inICEBinThermo-stat ONPressureSw. ONOverheatProtectReset Hi Temp Mid Temp Lo Temp Too Lo Temp Normal Too Hi Temp

64To Stand-by Cycle (When Control Sw. is turned OFF, Pressure Sw. is OFF, Thermistor Temp. exceedst1, or Bin Control is in full position)To Freeze Cyc

654. PERFORMANCE DATA [a] KML-250MAH

66[b] KML-250MWH

67 [c] KML-350MAF

68[d] KML-350MWF

69 [e] KML-350MAH

72. KML-250MWH

70[f] KML-350MWH (Serial #L00001J through M20060C)

71[g] KML-350MWH (Beginning Serial #M30061E)

72[h] KML-450MAF

73[i] KML-450MWF

74[j] KML-450MAH

75[k] KML-450MWH (Serial #L00001D through M10530B)

76[l] KML-450MWH (Beginning Serial #M20531D)

77[m] KML-600MAF

78[n] KML-600MWF

79[o] KML-600MRF

83. KML-350MAF

80Page KML-600MAH

81[q] KML-600MWH (Serial #L00001D through Serial #M10115C)

82[r] KML-600MWH (Beginning Serial #M10121E)

83[s] KML-600MRH

84 PROBLEM POSSIBLE CAUSE REMEDY[1] The icemaker a) Power Supply 1. “OFF” position. 1. Move to “ON” position will not start 2. Loose co

85 PROBLEM POSSIBLE CAUSE REMEDYl) Controller Board 1. Defective 1. See “II.2[e] CHECKING CONTROLLER BOARD.”[2] Water a) Float switch 1.

86 PROBLEM POSSIBLE CAUSE REMEDY[4] Water a) Water Solenoid 1. Diaphragm does not close. 1. Check for water leaks continues to Val

873. LOW ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY[1] Freeze cycle a) Float Switch 1. Leads short-circuit or 1. Check and replace.

88 PROBLEM POSSIBLE CAUSE REMEDY[1] Icemaker will a) Bin Control 1. Set too cold. 1. Adjust warmer. not stop when Thermostat 2. Def

89V. REMOVAL AND REPLACEMENT OF COMPONENTSIMPORTANTEnsure all components, fasteners and thumbscrews are securely in placeafter the equipment is servi

94. KML-350MWF

905) Disconnect the Vacuum Pump, and attach a Refrigerant Service Cylinder tothe High-side line. Remember to loosen the connection, and purge the airf

913. REMOVAL AND REPLACEMENT OF COMPRESSORIMPORTANTAlways install a new Drier every time the sealed refrigeration system is opened.Do not replace the

924. REMOVAL AND REPLACEMENT OF DRIERIMPORTANTAlways install a new Drier every time the sealed refrigeration system is opened.Do not replace the Drier

935. REMOVAL AND REPLACEMENT OF EXPANSION VALVEIMPORTANTSometimes moisture in the refrigerant circuit exceeds the Drier capacity andfreezes up at the

946. REMOVAL AND REPLACEMENT OF HOT GAS VALVE AND LINEVALVECAUTIONAlways use a copper tube of the same diameter and length when replacingthe hot gas l

9510) Cut the leads of the Solenoid allowing enough lead length to reconnect using closed end connectors.11) Connect the new Solenoid leads.12)

967. REMOVAL AND REPLACEMENT OF EVAPORATORIMPORTANTAlways install a new Drier every time the sealed refrigeration system isopened. Do not replace the

978. REMOVAL AND REPLACEMENT OF WATER REGULATING VALVE -WATER-COOLED MODEL ONLYIMPORTANTAlways install a new Drier every time the sealed refrigeration

989. ADJUSTMENT OF WATER REGULATING VALVE - WATER-COOLEDMODEL ONLYThe Water Regulating Valve (also called “WATER REGULATOR”) is factory-adjusted.No ad

9910. REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE REGULATOR (C.P.R.) - REMOTE AIR-COOLED MODEL ONLYIMPORTANTAlways install a new Drier every t