Replacing Heat Exchanger No-Defrosting
1. Disconnect line cord from electrical outlet.
2. Install service valve as close as possible to the tip of
process tube for easy pinch-off after recharging the
3. Connect a hose to the service valve and capture the
NOTE: Effective July 1, 1992, before opening any
refrigeration system it is the responsibility of the
service technician to capture the refrigerant for
4. Remove butyl sealer from around tube entry hole.
5. Unsolder suction tubing at compressor stub or cut
tubing three inches (76 mm) from compressor stub.
6. Cut drier from condenser tubing. Then cut drier from
7. Remove screws securing freezer coil cover and
detach green grounding wire.
Circulating Fan and Wiring
With Coil Cover Removed
8. Remove styrofoam air block from each end of the
9. Disconnect defrost heater lead from spade terminal
on fan motor.
10.Spade connector is used to join the defrost heater
lead to the lead-in wire. Separate these two wires at
the spade connector. Release lead from the two clips
on coil mounting panel.
11. Disconnect heater lead from defrost thermostat.
12.Remove defrost thermostat from coil header to
release the front tang. See following illustration.
To avoid risk of electrical shock, personal injury or
death; disconnect power to unit before following any
Removing Defrost Thermostat
No Defrost Models
13. Detach green grounding wire from freezer coil header.
14. Remove screws securing freezer coil to coil mounting
panel. Coil is now free to be removed.
15.Straighten heat exchanger tubing to pass through the
opening in the cabinet back.
16.Pull entire assembly out of the cabinet.
17.Unsolder cap tube and suction line from freezer coil,
careful not to overheat the epoxy joints.
Heat Exchanger To Freezer Coil Joints
18. Transfer rubber insulating sleeve to replacement heat
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