V1.0
9 Gallon Twin-Tank Wheelbarrow Portable Air Compressor
Problem(s)
Air blowing from
inlet filter
Insufficient
pressure at tool or
accessory
Tank loses
pressure rapidly
when compressor
shuts off.
Moisture in
discharge air.
Pressure in tank
exceeds 135 PSI.
Crankcase
lubricant is milky.
Belt roll over.
Visit www.princessauto.com for more information
Possible Cause(s)
Damaged inlet (reed) valve.
1. Leaks or restrictions.
2. Restricted air intake
(filter plugged).
3. Slipping belt.
4. Hose or hose connectors
too small.
5. Compressor incorrectly
sized.
6. Regulator not turned up
to high enough pressure /
faulty regulator.
7. Compressor valves
leaking.
1. Loose connection or leak
(pipe, tank drain valve,
tubing, fitting or hose).
2. Faulty check valve.
Condensation in tank, caused
by high level of atmospheric
humidity or compressor is not
run long enough.
1. Defective pilot valve.
2. Incorrectly adjusted pilot
valve.
Water in lubricant due to
humidity or condensation.
1. Misaligned belts.
2. Loose belt.
Suggested Solution(s)
Have compressor repaired by a
qualified technician.
1. Check for leaks or
restrictions in hose or
piping. Repair.
2. Replace air filter.
3. Tighten belt. (See
Maintenance - Monthly)
4. Replace with larger hose or
connectors.
5. Either use a smaller tool or a
larger compressor.
6. Turn the regulator to the
proper setting / replace
faulty regulator.
7. Have compressor repaired
by a qualified technician.
1. Turn unit off, unplug it, &
tighten or replace fittings or
components.
2. Replace faulty check valve.
Drain tank after every use.
Drain tank more frequently in
humid weather & use an inline
filter.
1. Replace defective pilot valve.
2. Readjust pilot valve (see Pilot
Valve Adjustment)
Change lubricant. Move
compressor to less humid
atmosphere.
1. Align belts (See Maintenance
- Monthly)
2. Tighten belts (See
Maintenance - Monthly)
8866659
19