Hoshizaki KM-2500SRH3 Manual de usuario

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• A Hoshizaki exclusive control board is employed in KM-2500SWH3 and KM-2500SRH3 Stackable Crescent Cubers.• All models are preteste

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 qualied 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 qualied 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 qualied 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 qualied 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. SpecicationsA. Icemaker1. KM-2500SWH3 (water-cooled)Note: We reserve the right to make changes in specications 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 specications and design without prior notice.AC SUPPLY VOLTAGE 208-2

8B. Condenser Unit1. URC-23FNote: We reserve the right to make changes in specications 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