Troubleshooting - General International AC1220 Owner's Manual

● Before each use,
1. check for any unusual noise or vibration.
2. be sure all nuts and bolts are tight.
● After each use, drain condensation from the air tank.
● Inspect air system for leaks by applying soapy water to all joints. Tighten these joints if leaks are
discovered.
Always inspect the compressor before use, and make sure it is in good working condition. Make sure all air
vents are clear. Check the power cable to make sure it is intact and free from cracks, bare wires etc. Avoid
using solvents when cleaning plastic parts, most plastics are susceptible to damage from the various types of
commercial solvents.
Trouble
Compressor will not start
Low pressure
Safety valve releases
Pressure in tank falls
Unloader valve leaks when
pump is not running
Compressor stopped and will
not re-start
Motor does not start and
makes a humming sound
Daily Maintenance
Monthly Maintenance

TROUBLESHOOTING

Possible Cause
1. Blown fuse or circuit breaker
tripped
2. Loose electrical connections
1. Restricted air filter
2. Defective check valve
3. Air leak in safety valve
Defective pressure switch
1. Air leaks at joints
Unloader valve seal defective
1. Thermal overload protector has
engaged due to motor overheat-
ing
2. Motor windings burn-out
Capacitor burn-out
17
Air Compressor
Corrective Action
1. Replace or reset fuse/circuit breaker
2. Check wiring connections
1. Replace air filter
2. Replace check valve
3. Check valve by pulling on ring. If
condition persists, replace valve
Replace pressure switch
1. Allow the compressor to build pres-
sure in the tank, to the max pressure if
possible. Spray or brush soapy water
on all air connections and look for bub-
bles. Tighten leaky connections. Do not
over-tighten.
2. If the problem continues, contact
customer support for further advice.
Allow air in the air tank out until all
pressure is released. Remove the un-
loader valve plug and clean the valve
seal. If damaged, replace seal and
re-install.
1. Check that the main supplied
voltage corresponds to the compres-
sor specifications. An inadequate
extension cord (too thin or too long)
can cause the motor to overheat due
to voltage drop. Excessive use (over
1 hour continuous) can cause motor
overheating. Allow the motor to cool
down.
Contact customer support
Contact customer support
AC1220 man
v.190926