Fisher & Paykel RX256DT4X1 FP Service Manual page 6

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11.3.6 Overload/Relay ................................................................................................................84
11.3.7 Condenser Removal ........................................................................................................85
11.4 Bottom of Cabinet ...................................................................................................................85
11.4.1 Front Levelling Rollers .....................................................................................................85
11.4.2 Rear Levelling Rollers......................................................................................................85
11.5 Cabinet Doors.........................................................................................................................85
11.5.1 Door Gaskets...................................................................................................................85
11.5.2 Dispenser Façade............................................................................................................85
11.5.3 Dispenser Ice Chute Door ...............................................................................................86
11.5.4 Dispenser Light Socket....................................................................................................86
11.5.5 Dispenser D/C Solenoid ..................................................................................................86
11.5.6 Dispenser Water Tube.....................................................................................................86
12 SEALED SYSTEM DIAGNOSIS ..............................................................................87
12.1 Symptoms of an Overcharge ..................................................................................................87
12.2 Symptoms of Refrigeration Shortage......................................................................................87
12.3 Symptoms of a Restriction......................................................................................................88
12.4 Symptoms of Air in System.....................................................................................................90
12.5 Symptoms of Low or High Ambient Temperature Installation.................................................90
13 SEALED SYSTEM SERVICE PROCEDURES ........................................................92
13.1 Service Equipment..................................................................................................................92
13.2 Drier Replacement..................................................................................................................92
13.3 Refrigerant Precautions ..........................................................................................................94
13.4 Line Piercing Valves ...............................................................................................................94
13.5 Open Lines .............................................................................................................................94
13.6 Compressor Operational Test.................................................................................................94
13.7 Dehydrating Sealed Refrigeration System..............................................................................95
13.8 Leak Testing ...........................................................................................................................95
13.8.1 Testing Systems Containing a Refrigerant Charge .........................................................95
13.8.2 Testing Systems Containing No Refrigerant Charge.......................................................95
13.9 Restrictions .............................................................................................................................97
13.9.1 Symptoms........................................................................................................................97
13.9.2 Testing for Restrictions ....................................................................................................97
13.10 Evacuation and Charging .......................................................................................................98
13.10.1 Evacuation .......................................................................................................................98
13.10.2 Charging ........................................................................................................................100
13.10.3 Refrigerant Charge ........................................................................................................100
13.10.4 HFC134a Service Information .......................................................................................100
13.10.5 Health, Safety, and Handling .........................................................................................101
13.11 Replacement Service Compressor .......................................................................................103
13.11.1 Compressor Testing Procedures ...................................................................................103
13.12 Brazing 103
14 WIRING DIAGRAMS..............................................................................................104
14.1 Wiring Schematic (RX256DT7X1) ........................................................................................104
14.2 Wiring Diagram (RX256DT7X1) ...........................................................................................105
14.3 Wiring Schematic (RX256DT4X1, RX256ET2B1, RX256ET2W1) ........................................106
14.4 Wiring Diagram (RX256DT4X1, RX256ET2B1, RX256ET2W1) ..........................................107
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