Hoshizaki MODULAR CRESCENT CUBER KM-630MRH User Manual

73114HOSHIZAKIMODULAR CRESCENT CUBERSERVICE MANUALKM-630MAHKM-630MWHKM-630MRHMODELJUNE 23, 2004NO.:ISSUED:

10Galvanized Steel21-15/16" x 15-11/16" x 17-7/8"(557 x 398 x 453.8 mm.)R404A 1 lb. 2 oz. (505 g)Net 61 lbs. (28 kg)Shipping 68 lbs. (3

11II. GENERAL INFORMATION1. CONSTRUCTION[a] KM-630MAH Spray Tubes Water Supply Inlet Control SwitchCondenserHot Gas Valve Expansion Valve F

12[b] KM-630MWH Spray Tubes Water Supply Inlet Control SwitchWater Regulator Expansion Valve Hot Gas Valve Compressor Float Switch Drier

13[c] KM-630MRH Spray Tubes Water Supply Inlet Control SwitchJunction Box Expansion Valve Receiver Tank Compressor Float Switch Drier

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

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

16The 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

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

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

192nd 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

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

20IMPORTANTFreeze 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

21[d] CONTROLS AND ADJUSTMENTSThe Dip Switch is factory-adjusted to the following positions:FOR MODELS WITH MECHANICAL BIN CONTROL:Switch Nos. 1 and 2

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

233) 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

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

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

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

27[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

28III. TECHNICAL INFORMATION1. WATER CIRCUIT AND REFRIGERANT CIRCUIT[a] KM-630MAH

29[b] KM-630MWH

3CONTENTSI. SPECIFICATIONS ... 51. KM-630MA

30[c] KM-630MRH

312. WIRING DIAGRAMS[a1] KM-630MAH (with auxiliary codes L-0, M-0, and M-1) and KM-630MWH (with auxiliarycodes L-0, M-0, M-1, and M-2)Note: Pressure

32[a2] KM-630MAH (with auxiliary codes M-2 and after) and KM-630MWH (with auxiliarycodes M-3 and after)

33U1GMA0179608Note: Pressure SwitchCut-out 412 PSIGCut-in 327 ± 21 PSIG[b1] KM-630MRH (with auxiliary codes L-0, M-0, M-1)+ 21- 0

34[b2] KM-630MRH (with auxiliary codes M-2 and after)

353. TIMING CHART

36

374. PERFORMANCE DATA[a] KM-630MAHNote: Pressure data is recorded at 5 minutes into freeze cycle. The data not in bold should be used for

38[b1] KM-630MWH Serial #L00001D - M20270B70/21 *619 281 596 270 563 25680/27 602 273 566 257 533 24290/32 596 270 *541 245 507 230lbs./day kg./day1

39[b2] KM-630MWH Serial #M20301E -Note: Pressure data is recorded at 5 minutes into freeze cycle. The data without * should be used for refe

4IV. SERVICE DIAGNOSIS ... 411. NO ICE PRODUCTION ...

40[c] KM-630MRHNote: Pressure data is recorded at 5 minutes into freeze cycle. The data not in bold should be used for reference only. We r

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

42 PROBLEM POSSIBLE CAUSE REMEDYl) Controller Board 1. Defective 1. See “II.2[e] CHECKING CONTROLLER BOARD.”m) Interlock Switch 1. “CLOS

43 PROBLEM POSSIBLE CAUSE REMEDY[5] No water a) Water Supply Line 1. Water pressure too low and 1. Check and get comes from water l

44 PROBLEM POSSIBLE CAUSE REMEDY[1] Freeze cycle a) Float Switch 1. Leads short-circuit or 1. Check and replace. time is too defect

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

46V. REMOVAL AND REPLACEMENT OF COMPONENTSIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place afterthe equipment is servi

474) Close the Low-side Valve and High-side Valve on the Service Manifold.5) Disconnect the Vacuum Pump, and attach a Refrigerant Service Cylinder to

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

4915) Evacuate the system, and charge it with refrigerant. For air-cooled and water-cooledmodels, see the Nameplate for the required refrigerant char

5I. SPECIFICATIONS1. KM-630MAHNote: We reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTAGE 208-2

504. REMOVAL AND REPLACEMENT OF DRIERIMPORTANTAlways install a new Drier every time the sealed refrigeration system isopened. Do not replace the Drie

513) Recover the refrigerant and store it in an approved container.4) Remove the insulation and the Expansion Valve Bulb on the suction line.5) Remove

52IMPORTANTAlways install a new Drier every time the sealed refrigeration system isopened. Do not replace the Drier until after all other repair or r

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

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

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

5610. REMOVAL AND REPLACEMENT OF CONDENSING PRESSUREREGULATOR (C.P.R.) - REMOTE AIR-COOLED MODEL ONLYIMPORTANTAlways install a new Drier every time th

5711. REMOVAL AND REPLACEMENT OF THERMISTORCAUTION1. Fragile, handle very carefully.2. Always use a recommended sealant (High Thermal Conductive Type)

58 Note: For models with the Liquid Bypass, the Thermistor should be located upstream from the Liquid Bypass outlet, and its end should

596) Install the new Fan Motor, and replace the removed parts in the reverse order of which they were removed.7) Replace the panels in their correc

62a. KM-630MWH Serial #L00001D - M20270BNote: We reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTA

603) Remove the Base Cover.4) Drain the Water Tank by removing one end of the Pump Tubing.5) Replace the removed parts in their correct positions.6) D

61VI. CLEANING AND MAINTENANCE INSTRUCTIONSIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place afterany maintenance or cl

62[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 Co

632. CLEANING AND SANITIZING PROCEDURESIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place afterany maintenance or cleanin

64[a] CLEANING PROCEDURE1) Dilute 16 fl. oz. of the recommended cleaner Hoshizaki “Scale Away” or “LIME-A-WAY” (Economics Laboratory, Inc.) with 3

6519) Replace the Front Panel in its correct position.20) Turn on the power supply to fill the Water Tank with water.21) Turn off the power supply aft

66[b] SANITIZING PROCEDUREFollowing Cleaning Procedure1) Dilute a 5.25 % Sodium Hypochlorite solution with water (Add 1.5 fl. oz. of sanitizer to

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

72b. KM-630MWH Serial #M20301E -AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V)AMPERAGE 6.5 A ( 5 Min. Freeze AT 104°F / WT 80°F)MINIMU

83. KM-630MRHNote: We reserve the right to make changes in specifications and design without prior notice.AC SUPPLY VOLTAGE 208-230/60/1 (3 wire wi

94. CONDENSER UNITURC-6F24"(610 mm.)23-1/32"(585 mm.)19-11/16"(500 mm.)18-1/8"(460 mm.)20-15/32"(520 mm.)21-15/16"(557 m