Hoshizaki “A Superior Degree of Reliability” www.hoshizaki.com Models KM-2500SWH3KM-2500SRH3Stackable Crescent Cuber Hoshizaki America, Inc. Number:
10II. General InformationA. Construction1. KM-2500SWH3 (water-cooled)Main Transformer Box Evaporator AssemblySpray TubesInlet Water ValveWater Supply
112. KM-2500SRH3 (remote air-cooled)Evaporator AssemblySpray TubesInlet Water ValveWater Supply InletHot Gas ValveJunction BoxesReceiver TankService V
12B. Sequence of Operation1. Sequence Cycles and ShutdownThe steps in the sequence are as outlined below. When power is supplied and BC is closed, CB
13e) Harvest Cycle Same as the initial harvest cycle. See "II.B.1.b) Initial Harvest Cycle."Note: Unit continues to cycle until BC is satis
142. Sequence Flow Chart"E" Control Board Sequence Flow ChartKM-2500SWH3, KM-2500SRH3Startup begins here after 5-sec. delay4. Pump-Out Cycle
15C. Control Board•AHoshizakiexclusivecontrolboardisemployedinKM-2500SWH3andKM-2500SRH3Stackable Crescent Cubers.•Allmodelsarepreteste
16 "E" Control Board1. Control Board Layout"E" Control BoardPart Number 2A1410-01 (factory); 2A1410-02 (service)• "OUTPUT TES
172. Featuresa) Maximum Water Supply Period – 6 minutesThe inlet water valve remains energized during harvest for 6 minutes or the length of harvest w
183. LED Lights and Audible Alarm SafetiesAt startup, a 5-second delay occurs while the control board conducts an internal timer check. A beep occurs
194. Controls and AdjustmentsCAUTIONDip switches are factory set. Failure to maintain factory settings may adverselyaffect performance and warranty co
2IMPORTANTOnly qualied service technicians should install, service, and maintain the icemaker. No service or maintenance should be undertaken until t
20c) Pump-Out Timer (S4 dip switch 3 & 4)When a pump-out is called for, the pump motor stops after the preceding freeze cycle. The pump motor ener
21e) Bin Control Selector (S4 dip switch 7)S4 dip switch 7 is the bin control selector.CAUTIONDo not adjust. This dip switch must be left in the facto
22D. Bin ControlCAUTIONWhen the ambient temperature is below 45°F (7°C), the thermostatic bin control switch opens and shuts down the icemaker even if
23III. Technical InformationA. Water Circuit and Refrigeration Circuit1. KM-2500SWH3 (water-cooled)Water SupplyCleaning ValveFloat SwitchDrainCheck Va
242. KM-2500SRH3 (remote air-cooled)Water SupplyCleaning ValveFloat SwitchDrainCheck ValveExpansion ValvesCompressorHot Gas ValveCheck ValvesHigh-Pres
25B. Wiring Diagrams1. KM-2500SWH3 (water-cooled), KM-2500SRH3 (remote air-cooled)* High Pressure SwitchWater-Cooled Model Remote ModelCut-out 384±21
26C. Performance Data1. KM-2500SWH3 (water-cooled)Note:1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold should be u
272. KM-2500SRH3 (remote air-cooled)Note:1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold should be used for refere
28IV. Service Diagnosis WARNING1. This unit should be diagnosed and repaired only by qualied service personnel to reduce the risk of death, electric
294) Initial Harvest Cycle – LEDs 1, 4, and 2 are on. WV remains energized. Comp, FMR, and HGV energize. WV is energized during harvest for a maximum
3IMPORTANTThis manual should be read carefully before the icemaker is serviced or maintenance operations are performed. Only qualied service technici
306) Pump-Out Cycle (10/20 second pump out) – LEDs 1, 3, and 2 are on. LED 4 is on when S4 dip switch 3 & 4 are set to 3 off and 4 on. Comp and FM
31B. Control Board CheckBefore replacing a control board that does not show a visible defect and that you suspect is bad, always conduct the following
32C. Bin Control CheckTo check the thermostatic bin control, follow the steps below.CAUTIONWhen the ambient temperature is below 45°F (7°C), the bin c
338) Reconnect the black oat switch connector, then replace the control box cover in its correct position.9) Move the control switch to the "ICE
347) Wipe down the oat switch assembly's housing, shaft, oat, and retainer rod with a mixture of 1 part Hoshizaki "Scale Away" and 25
35F. Diagnostic Charts1. No Ice Production Problem Possible Cause Remedy[1] The icemaker will not start.a) Power Supply 1. Off, blown fuse, or trippe
36Problem Possible Cause Remedy[1] The icemaker will not start. (continued)h) Control Transformer 1. Coil winding open or shorted.1. Replace.i) Wiring
37Problem Possible Cause Remedy[3] Compressor will not start or stops operating. (continued)c) Internal Overload Protector Open (check 1 through 3 to
38Problem Possible Cause Remedy[7] Fan motor will not start, or is not operating (except water-cooled model). (continued)b) Control Board 1. Defective
39Problem Possible Cause Remedy[1]Freeze cycle time is too long. (continued)h) Expansion Valve 1. Bulb loose. 1. Secure bulb.2. Operating erratically.
4D. Bin Control ... 22E. Float Switch .
40Problem Possible Cause Remedy[3]Other. a) Ice Cube Guide 1. Out of position. 1. Place in position.b) Bin Control Thermostat 1. Bulb out of position
41Problem Possible Cause Remedy[2] Harvest cycle time is long.a) Water Supply 1. Water temperature too cold.1. Increase temperature.b) Thermistor 1. O
42[2] Cloudy or irregular cubes.a) Evaporator 1. Frozen up. 1. See "IV.F.2. Evaporator is Frozen Up."2. Scaled up. 2. Clean3. Damaged. 3.
43V. Removal and Replacement of Components WARNING1. This unit should be diagnosed and repaired only by qualied service personnel to reduce the risk
442. Brazing WARNING1. R-404A itself is not ammable at atmospheric pressure and temperatures up to 176°F (80°C).2. R-404A itself is not explosive or
454) Close the low-side valve and high-side valve on the gauge manifold.5) Disconnect the gauge manifold hose from the vacuum pump and attach it to a
4610) Remove the drier, then place the new drier in position.11) Remove the plugs from the suction, discharge, and process pipes.12) Braze all ttings
479) Evacuate the system, and charge it with refrigerant. For water-cooled model, see the nameplate for the required refrigerant charge. For remote ai
4812) Connect the new solenoid leads.13) Attach the solenoid to the valve body and secure it with the bolt.14) Replace the panels in their correct pos
49F. Removal and Replacement of Water-Cooled CondenserCAUTION1. Always install a new drier every time the sealed refrigeration system is opened. 2. Do
5Important Safety InformationThroughout this manual, notices appear to bring your attention to situations which could result in death, serious injury,
50G. Removal and Replacement of Remote Air-Cooled CondenserCAUTION1. Always install a new drier every time the sealed refrigeration system is opened.
51H. Removal and Replacement of Water Regulating Valve (water-cooled model)CAUTION1. Always install a new drier every time the sealed refrigeration sy
5218) Check for water leaks.19) Replace the panels in their correct positions.20) Turn on the power supply.I. Adjustment of Water Regulating Valve - W
538) Braze all ttings with nitrogen gas owing at a pressure of 3 to 4 PSIG. 9) Use an electronic leak detector or soap bubbles to check for leaks. A
5410) Secure the insulation using the plastic cable ties.11) Connect the white thermistor connector through the bushing of the control box to the cont
559) Close the icemaker water supply line drain valve. Open the icemaker water supply line shut-off valve.10) Turn on the power supply.11) Check for l
56O. Removal and Replacement of Control BoardCAUTION1. The control board is fragile; handle very carefully.2. The control board contains integrated ci
57VI. Cleaning and MaintenanceIMPORTANTEnsure all components, fasteners, and thumbscrews are securely in place after any cleaning or maintenance is do
581. Cleaning Procedure1) Dilute 38 . oz. (1,124 ml) of recommended cleaner Hoshizaki "Scale Away" with 7 gal. (26 l) of warm water. 2) Rem
5918) Replace the front panel in its correct position.19) Turn on the power supply to ll the water tank with water.20) Turn off the power supply afte
6I. SpecicationsA. Icemaker1. KM-2500SWH3 (water-cooled)Note: We reserve the right to make changes in specications and design without prior notice.A
60B. MaintenanceIMPORTANTThis icemaker must be maintained individually, referring to the instruction manual and labels provided with the icemaker.1. S
612. Drain the water tank:1) Turn off the power supply, then remove the front panel. Move the control switch to the "OFF" position.2) Remove
72. KM-2500SRH3 (remote air-cooled)Note: We reserve the right to make changes in specications and design without prior notice.AC SUPPLY VOLTAGE 208-2
8B. Condenser Unit1. URC-23FNote: We reserve the right to make changes in specications and design without prior notice.Unit: mm (inches)
9 SPECIFICATIONSMODEL: URC-23FAC SUPPLY VOLTAGE 115/60/1 (Connection to Icemaker) FAN MOTOR 115 V Total 2.6FLA 130WEXTERIOR DIMENSIONS (WxDxH) 46-3/8
Kommentare zu diesen Handbüchern