-30-
Model T32338 (Mfd. Since 12/20)
Motor & Electrical (Cont.)
Symptom
Possible Cause
Possible Solution
Machine has
vibration or
noisy operation.
1. Motor or component loose.
2. Machine feet loose.
3. Motor fan rubbing on fan cover.
4. Centrifugal switch needs adjustment/at fault.
5. Motor bearings at fault.
6. Compressor pump at fault.
1. Replace damaged or missing bolts/nuts or tighten if
loose.
2. Tighten bolts.
3. Fix/replace fan cover; replace loose/damaged fan.
4. Adjust/replace if at fault.
5. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
6. Compressor piston rod/bearing/crankshaft is worn.
Rebuild or replace pump.
Motor runs
continuously.
1. Machine is undersized.
2. Regulator needs to be adjusted for lower
airflow delivery.
3. Air leak in tanks or delivery pipes.
4. Pressure switch at fault.
1. Use smaller attachment tool or larger air compressor.
2. Turn regulator knob counterclockwise to decrease line
PSI.
3. Check air tanks, pipes, and all connections for leaks
(
Page 27). Do not attempt to repair leaking/damaged
tank, only replace.
4. Turn compressor
OFF, disconnect from power, and
empty tanks. DO NOT USE until switch is replaced.
Pressure relief
valve stays
open and motor
will not stop
running.
1. Pressure switch cut-in/cut-out settings have
been adjusted incorrectly.
2. Pressure switch at fault, unit is trying to
overpressurize tanks.
3. Pressure relief valve at fault/relieving
pressure too early.
1. Adjust settings (
Page 34). Do not exceed cut-in/cut-
out pressures listed on data sheet (
Page 6) or inside
pressure switch.
2. Turn compressor
OFF, disconnect from power, and
empty tanks. DO NOT USE until switch is replaced.
3. Replace.
Operation
Symptom
Possible Cause
Possible Solution
Air leaks from
pressure
switch.
1. Check valve components are dirty/damaged.
2. Pressure switch at fault.
1. Clean/replace check valve components (
Page 33).
2. Turn compressor
OFF, disconnect from power, and
empty tanks. DO NOT USE until switch is replaced.
Low pressure
in tanks, or
tank pressure
drops after
compressor is
turned
OFF.
1. Drain valve is open.
2. Air filter dirty/clogged.
3. Regulator needs to be adjusted for lower
airflow delivery.
4. Pressure switch cut-in/cut-out settings have
been adjusted incorrectly.
5. Air leak in tanks or delivery pipes.
6. Check valve components are dirty/damaged.
7. Pressure relief valve releasing below 125
PSI.
8. Gasket(s) leaking.
9. Worn pump piston rings.
1. Close drain valve.
2. Replace air filter (
Page 26).
3. Turn regulator knob counterclockwise to decrease line
PSI.
4. Turn compressor
OFF, disconnect from power, and
empty tanks. DO NOT USE until switch is replaced.
5. Check air tanks, pipes, and all connections for leaks
(
Page 27). Do not attempt to repair leaking/damaged
tank, only replace.
6. Clean/replace check valve components (
Page 33).
7. Replace pressure relief valve.
8. Check gaskets on cylinder head assembly, repair or
replace as needed.
9. Inspect and replace pump piston rings.
Air leaks from
air filter.
1. Check valve components are dirty/damaged.
2. Reed valve(s) not sealing.
1. Clean/replace check valve components (
Page 33).
2. Remove cylinder head and replace reed valve(s).