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4. Remove the bottom cover of the freezer compartment.
5. Remove the evaporator cover with fan motor.
6. Remove the defrost heater and the bimetal switch from the evaporator.
7. Disconnect the main wiring harness plug from the cabinet connector.
8. Unwrap the sound deadening material from the evaporator inlet. Keep it in
one piece. It will need to be reinstalled later.
9. Cut away the foam stop material even with the plastic freezer compartment liner where the
heat exchanger emerges from the cabinet.
10. Remove the foam blocks on each side of the evaporator - do not break.
11. Cut and fold the Flame-Guard material according to locate in the freezer compartment.
12. Place the heat trap paste on the back wall of the freezer compartment to hold the Flame -
Guard in place during repairs.
13. Seal the corners and the slots cut for the heat exchanger with heat trap paste.
14. Cover the plastic liner with heat trap paste anywhere it may be exposed to an open torch
flame.
EVAPORATOR REPAIRS
1. If leaks in the inlet or outlet joints of the evaporator are to be repaired in place, apply a
generous amount of heat trap paste to the aluminum to copper transition of the inlet or
outlet of the evaporator.
2. Repair the leaking joint.
EVAPORATOR REPLACEMENTS
1. If the evaporator is to be replaced, do not put heat trap paste on the inlet or
outlet joints.
2. Score the capillary tube with a file and snap it apart.
3. Cut the aluminum evaporator tubing approximately two inches below the Aluminum to
copper transition at the outlet with a pair of diagonal cutters.
4. Remove the evaporator from the freezer compartment.
5. Carefully un braze the suction line from the transition.
6. Take the time to repack fresh heat trap paste on any areas where it may have dried out.
Heat trap paste is only effective when moist.
7 Insert the copper suction line tubing into the outlet of the new evaporator approximately one
half inch.
8. Insert the capillary tube approximately one inch into the inlet of the new evaporator.
9. Hang the new evaporator on the flanges in the back wall of the freezer compartment.
10. Apply a generous amount of heat trap paste to the aluminum to copper transition of the
inlet and outlet of the evaporator.
11. Braze the outlet joint.
12. Braze the inlet joint.
13. Inspect the newly brazed joints for black spots indicating potential leaks. Braze again if
necessary.
14. Do not remove the Flame-Guard at this time.
RESTORING THE UNIT TO PROPER OPERATION
1. Thoroughly leak check the newly brazed joints and correct any leaks.
2. Sweep the sealed system.
3. Finally charge the sealed system and check that unit is operating properly.
4. Remove the Flame-Guard
5. Remove all heat trap paste from inside of freezer compartment before reassembling.
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