TM 5-4310-358-14
Table 5-1. Troubleshooting (Con't)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
i. Replace V-belt guard and replace
attaching hardware.
j. Reconnect main power source.
2.
Electric Motor Reverses
Step 1. Check motor leads for proper
If motor leads are not connected
connection in magnetic starter box.
properly, repair as follows:
a. Disconnect main power source.
b. Remove screw from bottom of magnetic
starter box cover and remove the cover.
c. Look on the name plate on the motor to
check the correct way the leads should be
connected into the magnetic starter box.
d. Connect the terminal lead from the
motor marked T1 to the screw marked T1 in
the magnetic starter box. Follow the same
procedure with terminal T2.
e. Replace the magnetic starter box and
replace the cover screw.
f. Reconnect the main power source.
3.
Electric Motor Overheats
Step 1. Use a volt meter and check for
If voltage is low from power source, connect
low line voltage from power source.
to another power source.
Step 2. Check V-belts for out of
a. Loosen motor mounting screws (fig. 5-4)
alignment. Also make a visual
securing motor to receiver. Move motor
inspection of belts and condition to
toward compressor, then lift belts off of
determine if the belts require
the pulley.
removal for cleaning and deglazing.
If deglazing appears necessary,
remove the lock belt guard.
WARNING
Dry cleaning solvent, P-D-680, used to clean parts is potentially dangerous to
personnel and property. Use in a well ventilated area as the fumes are dangerous
if inhaled. Do not use near open flame or excessive heat. Flash point of solvent is
100 F. - 138 F. (38C. 59 C.).
b. Use a cloth dampened in dry cleaning
solvent, P-D-680, to remove oil and dust film.
If the belts appear to have been saturated,
and the heat has glazed the surfaces of the
Vee's , proceed as follows:
c. Use a medium grade of grit paper (not
emery cloth) and rough up the surfaces with
strokes of uneven direction.
d. Wipe off all grit particles. When surfaces
have been deglazed, install the belts on
5-7
