Evaporator Replacement; Compressor Replacement - Fisher & Paykel RF201A Service Manual

12.8

EVAPORATOR REPLACEMENT

The evaporator is located in the FC compartment mounted on the back wall on its own carrier, with a grill
covering a fan motor, which is housed in the front cover.
Having determined that the evaporator needs replacing:
1. Disconnect the refrigerator from the power supply.
2. Recover the refrigerant.
3. Remove the FC drawer (refer to Section 0).
4. Remove the evaporator coil cover.
5. Clean both the suction and capillary pipes with emery cloth.
6. With a tube cutter, cut the suction pipe as close as possible to the induction brazed joint (cutting
the suction capillary side of the joint).
7. With a file or knife, cut the capillary where it enters the transition joint on the evaporator.
8. With the element wiring disconnected, the evaporator can be removed.
9. Take the replacement evaporator and fit it to the carrier, fitting the defrost element assembly and
the 2 pieces of heat shrink sleeving onto the pipes.
10. Align the evaporator and joints ready to be soldered into position.
11. Lay the product on its back.
12. Place a protective covering over the back of the liner to protect it should solder drop onto it while
the joint connections are being made.
13. Fit the suction and capillary lines together, with a protective heat shrink sleeving placed on the
pipe first away from the heated area. Care must be taken when brazing near the plastic liner.
14. The same applies for the capillary, applying more heat to the transition joint as it is heavier in
material than the capillary.
15. Pressure test both joints.
16. Fit heat shrink sleeving over the joints and heat, having placed damp rags around the area of the
ABS liner as heating the heat shrink can cause the liner to be overheated. It is also important to
keep the thermal fuse in the element circuit away from the heat gun, as heat from the heat gun
can cause the thermal fuse to go open circuit.
12.9

COMPRESSOR REPLACEMENT

COMPRESSOR With No Oil Cooler
1. Disconnect the refrigerator from the power supply. Empty the freezer.
2. Recover refrigerant from the system by fitting a line tap valve to the process pipe on the compressor
and connecting to a recovery unit.
3. Remove the relay cover from the compressor and remove the connector from the compressor
electrical pins.
4. Unbraze the compressor suction, discharge and defrost water tray heater pipes. Cut if a blockage is
suspected.
5. Remove the water tray by removing the two screws.
6. Remove the retaining clips from the compressor mounting pins and lift the compressor clear of the unit
compartment. Seal the compressor lines.
7. Fit the new compressor to the mounting pins and refit the retaining clips.
8. Refit the piping such as the suction, discharge and water evaporator heater.
9. FIT A NEW CHARGING TAIL /PROCESS PIPE.
10 REPLACE THE FILTER DRYER. THE FILTER IS TO BE REMOVED BY CUTTING FROM THE
SYSTEM, DO NOT HEAT THE FILTER TO UNBRAZE.
11. Pressurise the system with nitrogen. (This is a must before any brazing takes place.)
12. Braze all the pipes.
13. Pressurise the system and test for leaks.
65
819091D