Product Manual

TROUBLESHOOTING GUIDE
Low discharge
pressure
1. Compressor too small
for application
2. Air leaks
3. Restricted intake air
4. Blown gasket(s)
5. Broken or misaligned
valves
1. Reduce air demand or use a compressor with more air
capacity.
2. Listen for air leaks. Apply a soap solution to all fittings and
connections. Bubbles will form at points of leakage.
Tighten or replace fittings or connections.
3. Clean or replace air filter.
4. Replace necessary gaskets.
5. Remove head and inspect for broken or misaligned valves.
Replace valves, if necessary.
Install a new head gasket each time
head is removed
Excessive
noise
“knocking”
1. Loose drive pulley or
flywheel
2. Low on oil
3. Worn connecting rod or
connecting rod bearing
4. Noisy check valve
1. Tighten drive pulley or flywheel bolt.
2. Check for proper oil level. Low or dirty oil may cause
bearing damage.
3. Replace connecting rod and/or connecting rod bearings.
4. Replace check valve.
Do not remove check valve with air
pressure in tank
Excessive oil
carryover
1. Worn piston rings
2. Restricted intake air
3. Too much oil in
compressor
4. Incorrect oil viscosity
1. Replace with new piston rings.
2. Clean or replace air filter.
3. Drain oil to proper oil level.
4. Use a quality non-detergent 30 or 40 wt oil specified for
each model (Page 4).
Water in tank
and/or
discharge line
1. Normal. Amount of
water will increase as
humidity in the air
increases.
1. Drain tank at least once per day.
2. Add an inline filter to reduce moisture in the air line.
Will not run or
motor hums
1. Low voltage
2. Malfunctioning pressure
switch
3. Malfunctioning check
valve
1. Check voltage with volt meter across both legs of incoming
power. Check reset button on motor.
2. Repair or replace pressure switch.
3. Replace check valve or pressure switch.
Do not remove check valve with air
pressure in tank
Breaker or
reset
repeatedly
trips
1. Incorrect breaker size
2. Low voltage
3. Malfunctioning motor
4. Loose electrical
connections
5. Malfunctioning pressure
switch
6. Malfunctioning check
valve
1. Make sure the breaker is sized properly. See page 6 in this
manual.
2. Check voltage with volt meter across both legs of incoming
power.
3. Replace motor.
4. Check all electrical connections.
5. Adjust or replace pressure switch.
6. Replace check valve.
Do not remove check valve with air
pressure in tank
Tank does not
hold pressure
when not
running and
shut off valve
is closed
1. Malfunctioning check
valve
2. Loose fittings or
connections
3. Crack or pin hole in tank
1. Replace check valve.
Do not remove check valve with air
pressure in tank
2. Tighten or replace fittings or connections.
3. Replace tank. Do not attempt to repair tank.