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CME456R
Removal and Replacement
Inlet Water Valve
1. Remove the front and left side panels.
2. Shut off the water supply.
3. Push and release the OFF button.
4. Pull the wire harness off the inlet water valve.
5. Remove screws holding the inlet water valve to
the back panel.
6. Pull the valve away from the cabinet and
disconnect the outlet tube.
7. Unscrew the water valve from the water inlet
tubing. Hold the barbed inlet fitting and rotate the
valve.
8. Reverse to reassemble.
9. Push and release the Freeze button.
10. Replace the front panel.
Water Pump
1. Disconnect the electrical power.
2. Remove the front panel.
3. Unplug water pump from its electrical
connection.
4. Remove 1 plastic bolt and the reservoir cover.
5. Lift water pump up and disconnect outlet tube.
6. Pull float ball from float stem (it is a snap fit).
Pull stem out.
7. Locate water level sensor mounting tabs,
compress together to release sensor from bracket.
8. Remove water pump brackets from pump.
9. Reverse to replace.
10. Replace front panel.
11. Re-connect electrical power.
Purge Valve
1. Disconnect electrical power.
2. Remove front panel.
3. Unplug wire harness from purge valve coil.
4. Locate and remove the two screws securing the
purge valve to the machine.
5. Pull the inlet and outlet hoses off the purge
valve and remove it from the machine.
6. Reverse to reassemble. There are no internal
parts available for this valve.
Purge Valve Timer
The purge valve timer is sensitive to electrostatic
discharge. Be certain to touch a grounded surface
before touching this component. Do the same
when handling the replacement part.
1. Touch a grounded surface.
2. Remove front panel.
3. Disconnect electrical power.
4. Remove high voltage box cover.
5. Locate timer board at the bottom of the high
voltage box.
6. Unplug all the wires to the board.
7. Compress each of the four stand-off posts to
release the board from the stand-offs.
8. Remove the board from the unit.
Reverse to reassemble.
Transformer and Compressor Starting
Components
Single phase compressors use a PTCR and run
capacitor. All are located in a sheet metal box to
the right of the AutoIQ Controller. The compressor
contactor is also located in that box.
1. Disconnect electrical power.
2. Remove front panel.
3. Remove 2 screws at the front edge of the metal
box, and pull the cover forward and out.
4. To check components, reconnect electrical
power.
Note: The contactor coil is 24 volt.
December 2000
Page 32
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