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M-SV-001-EN Rev.E
• • • CAUTION • • •
The solenoid actuators are dedicated on all models except TT300/TG230. Provide a position reference mark before removal.
5. Remove the Motor-Cooling Valve Solenoid Coils by removing the screws on each solenoid.
6. Dry off any condensate around the solenoids.
7. Remove any debris or dust from Backplane
Board and solenoids using a soft-bristle brush.
8. Remove both PWM cables from the feed
throughs.
9. If the neoprene gasket is black, remove the
gasket and remove any rust or debris. Note the
orientation of pins for gasket re-insertion (holes
are numbered on gasket).
Figure 100 - Motor Cooling
Valve Solenoids
NOTE
There are different styles of bearing power feed throughs. Older versions have a removable black neoprene gasket. This was later
replaced on Mjor Revision “E” compressors with a non-removable red neoprene gasket. Perform the following steps if the com-
pressor has either the black or red neoprene gaskets. There is also a new sealed harness that does not require any preventative
maintenance. This process is not used on Major Revision “F” and later compressors.
Figure 101 - Neoprene
Gasket Removal
10. Remove both bearing sensor cables.
11. Dry off any condensate around the bearing
sensor feed throughs.
12. Using a soft-bristle brush, clean the bearing
feed through connections and PWM connectors
and screws.
13. Spray greaseless lubricant on exposed metal
surfaces, exposed feed through pins, solenoids,
and Backplane Board to remove any trace of
moisture.
14. Wipe off excess lube with a lint-free rag.
15. Wait for surfaces to dry completely.
16. Once they are dry, apply a coat of rust
inhibitor spray on exposed metal surfaces,
exposed feed through pins, solenoids, and
Backplane Board.
Maintenance
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