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Potentiometer Repair
Installation:
1.
Route the wire from the new
potentiometer (47) through the foam
gasket (90).
2.
Connect potentiometer (47) to the
control board (20). Refer to Wiring
Diagrams (ProContractor), page 19
and Wiring Diagrams (ProComp),
page 20.
3.
For ProComp models, wrap the foam
gasket (91) around the wire bundle to
protect against damage from the
compressor power switch (77).
4.
Remove the mounting nut from the
potentiometer (leave washer in place)*
and slide through opening in the top cover
(31). For proper alignment, the locating
tab on the potentiometer (47) should be
inserted into the hole in the top cover (31).
Refer to Fig. 3.
*Remove and discard plain washer if unit has
Isolator (17X783).
5.
Install the mounting nut. Torque to 10-15
in-lb (1.1 - 1.7 N•m).
6.
Install top cover (31) using eight screws
(16). Torque to 20-25 in-lbs (2.5 - 3.0
N•m).
7.
Rotate the shaft of the potentiometer
(45) clockwise as far as it can go. Slide
the knob (37) over the shaft and align the
pointer to the maximum setting on the
control label (35). While applying a light
pressure to the knob (37), tighten the two
set screws to 3-5 in-lb (0.3 - 0.6 N•m).
10
Fig. 3
3A5024B
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