KMD-201AA KMD-201AWA - Hoshizaki

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8. WATER REGULATING VALVE – WATER-COOLED MODEL ONLY1) Turn off the power supply.2) Remove the panels.3) Close the condenser water supply line shut-off valve, then open the condenser watersupply line drain valve.4) Attach a compressed air or carbon dioxide supply to the condenser water supply linedrain valve.5) Open the water regulating valve by using a screwdriver to pry up on the spring retainerunderneath the spring. While holding the valve open, blow out the condenser using thecompressed air or carbon dioxide supply until water stops coming out.6) Recover the refrigerant and store it in an approved container.7) Disconnect the capillary tube at the condenser outlet.8) Disconnect the flare-connections of the valve.9) Remove the screws and the valve from the bracket.10) Install the new valve.11) Remove the drier, then place the new drier in position.12) Braze all fittings while purging with nitrogen gas flowing at a pressure of 20 to 30 kPa..13) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace ofrefrigerant to the system (if using an electronic leak detector), and then raise thepressure using nitrogen gas (970 kPa). DO NOT use R-404A as a mixture withpressurized air for leak testing.14) Evacuate the system, and charge it with refrigerant. See the nameplate for the requiredrefrigerant charge.15) Connect the flare-connections.16) Close the condenser water supply line drain valve, then open the condenser watersupply line shut-off valve.17) Check for water leaks.18) Replace the panels in their correct positions.37
19) Turn on the power supply.9. ADJUSTMENT OF WATER REGULATING VALVE– WATER-COOLED MODEL ONLYThe water regulating valve (also called "water regulator") is factory-adjusted. No adjustmentis required under normal use. Adjust the water regulator, if necessary, using the followingprocedures.1) Prepare a thermometer to check the condenser drain temperature. Attach a pressuregauge to the high-side line of the system.2) Five minutes after a freeze cycle starts, confirm that the thermometer reads 40 ºC to 46ºC. If it does not, rotate the adjustment screw by using a flat blade screwdriver until thetemperature is in the proper range. See Fig. below. Next, check that the referencepressure is in the range indicated in the Head Pressure table in the Performance Datasection. If it is not in the proper range, verify the refrigerant charge.3) Check that the condenser drain temperature is stable.10. FAN MOTOR1) Turn off the power supply.2) Remove the panels.3) Loosen the two screws securing the Fan Blade Cover, then remove it.4) Disconnect the Connector of the Fan Motor lead.5) Loosen the far side of the two screws and remove the near side of the two screwssecuring the Fan Motor Bracket and slide out towards you. To prevent deformation, donot hit the Fan on the Condenser or other parts.6) Install the new Fan Motor in the reverse order of the removal procedure.7) Replace the panels in their correct positions.8) Turn on the power supply.38
Page 1 and 2: NO. F037-775ISSUED: JUN. 15, 2009RE
Page 3 and 4: [a] NO ICE PRODUCTION -------------
Page 6 and 7: II. GENERAL INFORMATION1. CONSTRUCT
Page 9 and 10: [e] NORMAL HARVEST CYCLELEDs 5, 6,
Page 11 and 12: 3. CONTROL BOARD* A HOSHIZAKI exclu
Page 13 and 14: [b] FEATURESa) Maximum Water Supply
Page 15 and 16: [c] CONTROLS AND ADJUSTMENTSa) Defa
Page 17 and 18: f) Freeze Timer (S1 dip switch 9 &
Page 19 and 20: 5. FLOAT SWITCH[a] EXPLANATION OF O
Page 21 and 22: 7. SWITCHESTwo different control sw
Page 23 and 24: 2. WIRING DIAGRAM20
Page 25 and 26: IV. SERVICE DIAGNOSIS1. 10-MINUTE D
Page 27 and 28: 2. DIAGNOSTIC CHARTS[a] NO ICE PROD
Page 29 and 30: 1. See "II. 3. [d] ControlBoard Che
Page 31 and 32: 1. See "II. 3. [d] ControlBoard Che
Page 33 and 34: V. REMOVAL AND REPLACEMENT1. SERVIC
Page 35 and 36: 2. BRAZINGNote: All brazing connect
Page 37 and 38: 5) Remove the Drier using brazing e
Page 39: 9) Evacuate the system, and charge
Page 43 and 44: 7) Remove the Hose Band connecting
Page 45 and 46: 10) Install the new water tank in t
Page 47 and 48: 8) Connect the bin control connecto
Page 49 and 50: 5) Refit the removed parts in the r
Page 51 and 52: 2) Install the new Run Capacitor in
Page 53 and 54: VI. CLEANING AND MAINTENANCE INSTRU
Page 55 and 56: g. Wipe down the float switch housi
Page 57 and 58: [a] STAINLESS STEEL EXTERIORTo prev
Page 59: 4) Turn off the power supply and re

KMD-201AA KMD-201AWA - Hoshizaki

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