Hoshizaki KM-2400SRH3 User Manual

™SERVICE MANUALNUMBER:73090KM-2400SRF3KM-2400SRH3STACKABLE CRESCENT CUBERReliability is abeautiful thingTMREVISED:DEC, 14, 2003ISSUED:DEC. 23, 1999

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

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

12(Control Products HOSHIZAKI001 Board)to the K1 connector. If there is a white wire, place the switch in the C position. If thisswitch is placed in

13(Control Products HOS-001A Board)

14 4. Defrost Timer stops counting. Defrost cycle is completed and freeze cycle starts.[c] SEQUENCE1st Cycle 1. Unit energized and Control

152nd Cycle and after with pump drainIMPORTANTFreeze cycle time is limited to 50 minutes evenif Float Switch does not open.1. Float Switch opens and s

162nd Cycle and after with no pump drainIMPORTANTFreeze cycle time is limited to 50 minutes evenif Float Switch does not open.1. Float Switch opens an

17DIP SWITCH NO. 1 2 3 4 5 6 7 8 9 10OFF OFF ON OFF OFF OFF OFF OFF OFF ON[d] CONTROLS AND ADJUSTMENTSThe Dip Switch is factory-adjusted to the follow

181) Defrost ControlA thermistor (Semiconductor) is used for a defrost control sensor. The resistance variesdepending on the Suction Line temperature

193) 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

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

206) Bin ControlCAUTIONWhen the ambient temperature is below 45°F, the Bin Control Thermostatoperates to stop the icemaker even if the Ice Storage Bin

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

22III. TECHNICAL INFORMATION1. WATER CIRCUIT AND REFRIGERANT CIRCUIT

232. WIRING DIAGRAMHigh Pressure SwitchACB-2UB09Cut-out 412 PSIGCut-in 327 ± 21 PSIG+210

243. TIMING CHART*1 The icemaker does not complete a defrost cycle in the first 2 or 3 minutes. See “II. 2. [d] CONTROLS ANDADJUSTMENTS.”

25*1 The Pump Motor waits for 2 seconds before starting a drain cycle. See “II. 2. [d] CONTROLS ANDADJUSTMENTS.”*2 The icemaker does not complete a d

264. PERFORMANCE DATAKM-2400SRF3, KM-2400SRH3 (Remote air-cooled, 3 phase) We reserve the right to make changes in specifications and design

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

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

29 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

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

302. EVAPORATOR IS FROZEN UP PROBLEM POSSIBLE CAUSE REMEDY[1] Freeze cycle a) Float Switch 1. Leads short-circuit or 1. Check and replace.

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

32V. REMOVAL AND REPLACEMENT OF COMPONENTSIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place afterthe equipment is servi

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

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

3515) Evacuate the system, and charge it with refrigerant. See the Charge Label in the machinecompartment for the required refrigerant charge.16) Con

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

376. REMOVAL AND REPLACEMENT OF HOT GAS VALVE AND LINE VALVECAUTIONAlways use a copper tube of the same diameter and length when replacing the hotgas

3811) Connect the new Solenoid leads.12) Attach the Solenoid to the valve body, and secure it with a screw.13) Replace the panels in their correct pos

398. REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE REGULATOR (C.P.R.)IMPORTANTAlways install a new Drier every time the sealed refrigeration sys

4 7. REMOVAL AND REPLACEMENT OF EVAPORATOR...38 8. REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE ...

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

4110. REMOVAL AND REPLACEMENT OF FAN MOTORNote: When replacing a Fan Motor with defective winding, it is recommended that a new capacitor be

4211. 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

437) 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 ch

44VI. CLEANING AND MAINTENANCE INSTRUCTIONSIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place afterany maintenance or cl

45[2] 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 removi

462. CLEANING PROCEDUREIMPORTANTEnsure all components, fasteners and thumbscrews are securely in place afterany maintenance or cleaning is done to the

47[a] CLEANING PROCEDURE1) Dilute 38 fl. oz. of the recommended cleaner Hoshizaki “Scale Away” or “LIME-A-WAY” (Economics Laboratory, Inc.) with 7

4819) Turn on the power supply to fill the Water Tank with water.20) Turn off the power supply after 3 to 5 minutes.21) Remove the Front Panel, and fu

49[b] SANITIZING PROCEDURE - Following Cleaning Procedure1) Dilute a 5.25% Sodium Hypochlorite solution (chlorine bleach) with water (Add 3.5 fl.

5I. SPECIFICATIONSKM-2400SRF3, KM-2400SRH3 (Remote air-cooled, 3 phase)We reserve the right to make changes in specifications and design without prio

503. MAINTENANCEIMPORTANT This icemaker must be maintained individually, referring to the instruction manual and labels provided with the icem

62. CONDENSING UNIT, URC-24F

7 SPECIFICATIONSMODEL: URC-24FEXTERIORDIMENSIONS (W x D x H)REFRIGERANT CHARGEURC-24FWEIGHTCONNECTIONSREFRIGERANTELECTRICALCONDENSERAC SUPPLY VOLTAGEA

8 Evaporator Spray TubeWater Valve Water Supply InletTransformer BoxHeaderJunction BoxCPR ValveReceiver TankDrierLine ValveWater PumpFloat Switch

92. CONTROLLER BOARD[a] SOLID-STATE CONTROL1) A HOSHIZAKI exclusive solid-state control is employed in KM-2400SRF3 and KM-2400SRH3 Stackable Cresc