Removal Of Defrost Heating Element; Removal Of Auxiliary Heater Element; Replacement Of Evaporator - Fisher & Paykel RB90S64MKIW Service Manual

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12.3.27

Removal Of Defrost Heating Element

• Remove the evaporator fan motor (refer to Section 12.3.26).
• Remove the cable ties from the evaporator sensors.
• Lift the evaporator upwards to clear the bottom of the divider partition and pull the bottom edge of the
evaporator forward.
• Remove the cable ties from the thermal fuses.
• Bend the first half of the evaporator clips and side the deflectors away from the front bank of the
evaporator on both sides.
• Drop the element down and out of the evaporator bank.
Refit in reverse order.
12.3.28

Removal Of Auxiliary Heater Element

• Remove the evaporator fan motor (refer to
Section 12.3.26).
• Unplug the auxiliary heater plug from the air
bell.
• Unclip the auxiliary heater from the clips
moulded to the compartment base.
Replace in reverse order.
12.3.29

Replacement Of Evaporator

The evaporator is located in the floor of the drawer compartment mounted horizontally. It is of the fin-on-
tube type with a grill and cover.
Having determined that the evaporator needs replacing:
• Recover the refrigerant.
• Remove the evaporator fan motor (refer to Section 12.3.26).
• Remove the cable ties from the evaporator sensors.
• Lift the evaporator upwards to clear the bottom of the divider partition and pull the bottom edge of the
evaporator forward.
• Remove the cable ties from the thermal fuses.
• Clean both suction and capillary pipes with emery cloth.
• With the tube cutter, cut the suction pipe as close as possible to the brazed joint (cutting the suction
capillary side of the joint).
• With a file or knife, cut the capillary where it enters the transition joint on the evaporator.
• With the element wiring disconnected, the evaporator can be removed.
• Take the replacement evaporator and fit it to the carrier, fitting the defrost element assembly and the two
heat shrink sleeves onto the pipes.
• Align the evaporator and joints ready to be brazed into position.
• Place a protective covering under the joints to protect the base should the hot filler rod drop onto it while
the joint connections are being made.
Replace in reverse order.
Auxiliary heater
70