Hoshizaki KML-200MAE Manual de usuario

NO.:ISSUED:REVISED:HOSHIZAKIMODULAR CRESCENT CUBERMODELKML-200MAEKML-200MWE SERVICE MANUAL73095FEB. 4, 1998NOV. 29, 2000

10(2) Defrost TimerThe defrost cycle starts when the Float Switch opens and completes thefreeze cycle. But the Defrost Timer does not start counting

11Connector K1Pin #1 thru #10#1, 9 Magnetic Contactor#2 Hot Gas Valve#3 Line Valve#4 Pump Motor (icemaking)#5 Pump Motor (drain)#6 Water Valve#7, 10 P

12IMPORTANT1. Board never accepts defrost completion signal within the first 2 minutes in defrost cycle.2. Defrost cycle time is limited to 20 m

132nd Cycle and after with pump drainIMPORTANTFreeze cycle time is limited to 60 minuteseven if Float Switch does not open.1. Float Switch opens and s

14IMPORTANTFreeze cycle time is limited to 60 minuteseven if Float Switch does not open.2nd Cycle and after with no pump drain1. Float Switch opens an

15[d] CONTROLS AND ADJUSTMENTS (Alpine/Alpine “C” Board)The Dip Switch is factory-adjusted to the following positions:Switch Nos. 1 and 2:Used for adj

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

173) 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

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

19 The unit should start the freeze cycle after 1 minute ± 5 seconds from the resistor connection.3) Check the Controller Board by usin

2FOREWORDIMPORTANTOnly qualified service technicians should attempt to service or maintain this icemaker.No such service or maintenance should be unde

203. SWITCHESTwo control switches are used to control operation in the KML Series Modular CrescentCubers. These switches are referred to as the “Cont

21III. TECHNICAL INFORMATION1. WATER CIRCUIT AND REFRIGERANT CIRCUIT[a] KML-200MAE

22[b] KML-200MWE

232. WIRING DIAGRAMS[a] KML-200MAE, KML-200MWENote: KML-200MAE Pressure SwitchCut-out 384 ± 21.3 PSIGCut-in 284.5 ± 21.3 PSIGKML-200MWE Pressur

24**3. TIMING CHARTControlSw. inICEBinThermo-stat ONPressureSw. ONOverheatProtectReset Hi Temp Mid Temp Lo Temp Too Lo Temp Normal Too Hi Temp

25To Freeze CycleTo Stand-by Cycle (When Control Sw. is turned OFF, Pressure Sw. is OFF, or Thermistor Temp. exceeds t1.)From Freeze CycleControlSw. i

264. PERFORMANCE DATA[a] KML-200MAENote: Pressure data is recorded first 5 minutes in freezing cycle.The data without *marks should be used for refer

27[b] KML-200MWEHEAT OF REJECTION FROM CONDENSER 5650 W [AT 90°F (32°C) / WT 70°F (21°C)]HEAT OF REJECTION FROM COMPRESSOR 381 W [AT 90°F (32°C

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

29 PROBLEM POSSIBLE CAUSE REMEDYl) Controller Board 1. Defective 1. See “II.2[e] CHECKING CONTROLLER BOARD.”[2] Water a) Float switch 1.

3  Please review this manual. It should be read carefully before the icemaker is serviced ormaintenance operations performed. Only qualified servi

30 PROBLEM POSSIBLE CAUSE REMEDY[4] Water a) Water Solenoid 1. Diaphragm does not close. 1. Check for water leaks continues to Val

313. LOW ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY[1] Freeze cycle a) Float Switch 1. Leads short-circuit or 1. Check and replace.

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

33V. REMOVAL AND REPLACEMENT OF COMPONENTS1. SERVICE FOR REFRIGERANT LINES[a] REFRIGERANT RECOVERYThe icemaker unit is provided with two Refrigerant

342. BRAZINGWARNING1. Refrigerant R22 itself is not flammable, explosive or poisonous. How-ever, when exposed to an open flame, R22 creates Phosgene

357) Slide and remove the Compressor. Unpack the new Compressor package. Install the new Compressor.8) Attach the Rubber Grommets of the prior Co

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

374) Remove the insulation and the Expansion Valve Bulb on the suction line.5) Remove the Expansion Valve Cover, and disconnect the Expansion Valve us

38IMPORTANTAlways install a new Drier every time the sealed refrigeration system isopened. Do not replace the Drier until after all other repair or r

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

4V. REMOVAL AND REPLACEMENT OF COMPONENTS... 331. SERVICE FOR REFRIGERANT LINES ...

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

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

4210. REMOVAL AND REPLACEMENT OF THERMISTORCAUTION1. Fragile, handle very carefully.2. Always use a recommended sealant (High Thermal Conductive Type)

4310) Secure the insulation using the Plastic Cable Ties.11) Connect the Thermistor leads through the bushing of the Control Box to the K3Connector on

4413. REMOVAL AND REPLACEMENT OF PUMP MOTOR1) Turn off the power supply.2) Remove the Front Panel.3) Remove the three screws and the Float Switch Ass

4514. REMOVAL AND REPLACEMENT OF SPRAY TUBE1) Turn off the power supply.2) Remove the Front Panel and the Insulation Panel.3) Release the Clamps, and

461. PREPARING THE ICEMAKER FOR LONG STORAGEVI. CLEANING AND MAINTENANCE INSTRUCTIONSCAUTIONWhen shutting off the icemaker for an extended time, drai

47[2] Remove the water from the potable water supply line:1) Turn off the power supply and remove the Front Panel.2) Move the Control Switch, on the C

482. CLEANINGWARNING1. HOSHIZAKI recommends cleaning this unit at least once a year. Morefrequent cleaning, however, may be required in some existing

4911) Replace the Insulation Panel and the Front Panel in their correct positions.12) Turn on the power supply and start the washing process.13) Turn

5* We reserve the right to make changes in specifications and design without prior notice.I. SPECIFICATIONS1. KML-200MAE115/60/110.8 A (5 Min. Freez

503. SANITIZING PROCEDURE - Following Cleaning Procedure1) Dilute IMS-II Sanitizer or a 5.25% Sodium Hypochlorite solution with water (Add 1.0 fl.

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

6* We reserve the right to make changes in specifications and design without prior notice.2. KML-200MWEAmbient Water Temp. (°F)Temp. (°F)

7II. GENERAL INFORMATION1. CONSTRUCTION[a] KML-200MAE

8[b] KML-200MWE

92. CONTROLLER BOARD[a] SOLID-STATE CONTROL1) A HOSHIZAKI exclusive solid-state control is employed in KML-200 Series ModularCrescent Cubers.2) A Prin