Volt Pro Power Series, Operator'S Manual

Page: 12 / 16

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Page 11
COMPRESSOR PUMP
Problem Cause Solution
Low Discharge Pressure 1.) Air leaks
2.) Leaking valves
3.) Restricted air intake
4.) Slipping belt
5.) Blown head or seals in
pump
6.) Regulator/unloader valve
needs adjusting
7.) Low compression
1.) Listen for escaping air. Apply
soap solution to fittings to see
if the bubbles appear
2.) Replace ACM or
regulator/unloader valve
3.) Clean the air filter element
4.) Remove belt guard and
tighten belt (see pg. 8)
5.) Replace V pump (no rebuild
kits)
6.) Adjust regulator/unloader
valve
7.) Replace pump (no rebuild kit)
Contact customer service at
1-888-207-8658
Pump is Overheating 1.) Poor ventilation
2.) Dirty cooling surfaces
3.) Blown cylinder head on
pump
4.) Low oil in pump
1.) Move compressor to a well-
ventilated area
2.) Clean all cooling surfaces
including air filers on engine
and pump
3.) Both pump heads should be
pulling air in to cool pump. If
one or both heads are
blowing air out, pump must
be replaced
4.) Check oil level thru site glass
at base of pump. Add oil as
needed. Use SAE 30 in
compressor pump
Excessive Belt Wear 1.) Pulley is out of alignment
2.) Belt too loose or too tight
3.) Pulley wobbles 1.) Re-align pulley
2.) Adjust belt tension (see pg. 8)
Check belt for wear. Replace
belt if needed
3.) Check for worn or bent
crankshaft, worn or loose
keyway. Check shaft bore in
pulley for wear
Unit Stalls 1.) Low Oil levels
2.) Engine shuts down when
tank pressure reaches
maximum capacity
1.) Check oil level in engine and
pump. (use SAE 30 oil in
pump and engine)
2.) Throttle control needs to be
adjusted to higher RPM.