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PROBLEM
CAUSE
3. Compressor
Motor runs hot
exceeding its duty-
cycle.
1. Faulty
Pressure relief
switch, unit is trying
valve
stays
to overpressure the
open
and
tank.
motor
won't
2. Faulty
stop running.
relief valve.
1. Faulty check valves.
Air leaks from
p r e s s u r e
switch
2. faulty
switch.
1. Tank is not drained.
Air is dirty or
has excessive
moisture.
2. Delivery pipes are
dirty.
-16-
is
3. Do not allow the compressor to run over
its recommended duty cycle.
pressure
1. Turn compressor off, unplug from power
supply, drain tank.
switch is repaired or replaced.
2. Relief valve is relieving pressure too
pressure
early, test pressure relief and repair or
replace.
1. Clean dirt or debris from rubber mem-
brane of check valve after removing top
nut.
pressure
2. Repair or replace pressure switch.
1. Open drain cocks on both tanks and make
certain all condensation water is drained
out.
2. Remove delivery pipes, clean out and
replace.
Model H3370/H3371Air Compressors
ACTION
DO NOT USE until
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