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Low discharge pressure
Excessive noise
"knocking"
Excessive oil carryover
1. Compressor too small for
application
2. Air leaks
3. Restricted intake air
4. Blown gasket(s)
i. Broken or misaligned valves
1. Loose drive pulley or flywheel
2. Low on oil
3. Worn connecting rod or
connecting rod beadng
4. Noisy check valve
1. Worn piston rings
2. Restdcted intake air
3. Too much oil in compressor
4. Incorrect oil viscosity
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. 13ghten
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
Install a new head gasket
eachtime headisremoved
1. 13ghten ddve 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 beadngs.
4. Replace check valve.
're
1. Replace with new piston dngs.
2. Clean or replace air filter.
3. Drain oil to proper oil level.
4. Use a quality non-detergent 30 or 40wt
oil specified for each model (Page 4).
Water in tank and/or 1. Normal. Amount of water will 1. Drain tank at least once per day.
discharge line increase as humidity in the 2. Add an inline filter to reduce moisture in
air increases, in the air line.
Will not run or motor 1. Low voltage
hums
2. Malfunctioning pressure switch
3. Malfunctioning check valve
1. Incorrect breaker sizeBreaker or reset
repeatedly trips
2. Low voltage
Tank does not hold
_ressure when not
running and shut off
valve is closed
3. Malfunctioning motor
4. Loose electdcal connections
5. Malfunctioning pressure switch
6. Malfunctioning check valve
1. Malfunctioning check valve
2. Loose fittings or connections
3. Crack or pin hole in tank
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.
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 electdcal connections.
5. Adjust or replace pressure switch.
6. Replace check valve.
ve.
Do not remove check valve
with air pressure in tank
2. "13ghtenor replace fittings or connections.
3. Replace tank. Do not attempt to repair tank.
Page 7