Table 4. Troubleshooting (continued)
TROUBLE
PROBABLE CAUSE
REMEDY
Compressor runs too
Pressure switch needs ad-
Check according to paragraph 33.
often (continued).
justment.
Large accumulation of water
Drain water from air receiver by opening drain
in air receiver.
cock (20, fig. 8).
Leakage in check valve.
Clean, repair, or replace check valve parts.
M a g n e t i c m o t or
Electrical service voltage is
Test, or have power company test, for low voltage.
starter kicks out.
too low.
Momentary voltage surge.
After several minutes, depress reset pushbutton
on magnetic motor starter box.
Mechanical bind causing mo-
Check that electrical motor and flywheel operate
tor overload.
freely.
Noisy check valve.
Check valve is worn.
Repair or replace check valve parts.
Excessive V belt
V belts slipping.
Tighten V belts to provide correct tension (para-
wear.
graph 14).
Motor pulley and flywheel
Move motor pulley in or out by loosening set screw
misaligned.
on key and tapping pulley in appropriate direction.
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