Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 User Manual download pdf (Page 4)

III. Service Diagnosis ........................................................................................................... 25

A. Alarm Signals .............................................................................................................. 25

1. High Temperature Alarm (E1) ................................................................................. 27

2. Low Temperature Alarm (E2) ................................................................................. 28

3. Cabinet Defrost Alarm (E3) .................................................................................... 29

4. High Condenser Temperature Alarm (clogged lter) (E7) ...................................... 30

5. Defrost Thermistor (cabinet) Malfunction Alarm (E8)............................................. 31

6. Condenser Thermistor Malfunction Alarm (E9)...................................................... 32

7. Control Board Alarms (EA and ED) ........................................................................ 33

B. Service Chart .............................................................................................................. 33

1. No Operation .......................................................................................................... 33

2. Cabinet Cooling ..................................................................................................... 34

3. Rail Cooling ........................................................................................................... 36

4. Cabinet Defrost ..................................................................................................... 37

5. Other ...................................................................................................................... 38

IV. Removal and Replacement of Components ................................................................... 39

A. Service for Refrigerant Lines ....................................................................................... 39

1. Refrigerant Recovery ............................................................................................. 39

2. Brazing .................................................................................................................. 40

3. Evacuation and Recharge (R-404A) ...................................................................... 40

B. Removal and Replacement of Refrigeration System Cartridge ................................... 42

1. Refrigerant Recovery Procedure ............................................................................ 42

2. Refrigeration System Pump-Down Procedure ...................................................... 44

C. Removal and Replacement of Compressor ................................................................ 47

D. Removal and Replacement of Cabinet Evaporator ..................................................... 48

E. Removal and Replacement of Expansion Valve .......................................................... 49

F. Removal and Replacement of Liquid Line Valve .......................................................... 50

G. Removal and Replacement of Condenser .................................................................. 51

H. Removal and Replacement of Thermistors and Thermostat ....................................... 52

1. Cabinet Thermistor ................................................................................................. 52

2. Defrost Thermistor ................................................................................................. 52

3. Defrost Thermostat ................................................................................................ 53

4. Rail Thermistor ...................................................................................................... 53

5. Condenser Thermistor (clogged lter) ................................................................... 54

I. Removal and Replacement of Defrost Heater .............................................................. 54

J. Removal and Replacement of Fan Motors ................................................................... 55

1. Cabinet Fan Motor .................................................................................................. 55

2. Condenser Fan Motor ............................................................................................ 56

3. Rail Fan Motor ....................................................................................................... 56

K. Removal and Replacement of Door Gasket ................................................................ 57

L. Door Re-Hinging and Drawer Conversion ................................................................... 57

V. Cleaning and Maintenance Instructions ........................................................................... 58

A. Cleaning ...................................................................................................................... 58

1. Work Surface .......................................................................................................... 58

2. Rail and Rail Cover ................................................................................................ 59

3. Exterior .................................................................................................................. 59

4. Cabinet Interior ...................................................................................................... 59

1 2 3 4 5 6 7 8 9 ... 65 66

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Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 User Manual Page 4

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