Central Pneumatic 93657 Owner's Manual & Safety Instructions page 12

troubleshooting
problem
The motor does
not work.
The motor runs,
but it makes
irregular noises or
a knocking noise.
Not enough pressure
when painting
or spraying.
Motor runs properly,
but no air pressure or
lack of air delivery.
Follow all safety precautions whenever diagnosing or servicing
the compressor.
Disconnect power supply before service.
Page 12
possible causes
1. No electrical power.
2. Damaged power cord.
3. Electrical wiring within
the unit is defective.
4. Power switch is defective.
1. Bearing is loose or damaged.
2. Screws in the connection
rod are loose.
1. Loose air connection(s).
2. Air hose is damaged.
3. Screws on cylinder
cover are loose.
1. Valve plate is loose or out of
place.
2. Retainer ring is damaged
after excessive use
at high pressure.
For technical questions, please call 1-888-866-5797.
Likely Solutions
1. Plug power cord into a working,
120VAC, grounded, electrical outlet.
2. Have a qualified service
technician replace power cord.
3. Have a qualified service technician
replace electrical wiring.
4. Have a qualified service technician
replace power switch.
1. Have a qualified service
technician replace bearing.
2. Tighten screws, or replace
them if necessary.
1. Check all air connections, and
tighten them if necessary.
2. Replace air hose.
3. Tighten screws.
1. Open the front cover and make
sure the valve plate is in the proper
position. Tighten screws if necessary.
2. Have a qualified service technician
replace the retainer ring.
Item 93657