Jenny Reciprocating Air Compressors, Operation And Maintenance Manual

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Troubleshooting Guide
Problem Possible Cause Possible Solution
Compressor does not start or
restart
Power cord not plugged in. Plug cord into grounded outlet.
Motor thermal overload switch has
tripped.
Turn air compressor off, wait until
motor is cool, if motor is a manual
reset type, then press motor
thermal overload button f rmly until
click is heard. (Located on motor)
Fuse blown or circuit has tripped. Replace fuse or reset circuit
breaker. Check for proper fuse;
only “Fusetron” type T fuses are
acceptable. Check for low voltage
conditions. Disconnect any other
electrical appliances from circuit or
operate air compressor on its own
branch circuit.
Wrong gauge wire or length of
extension cord.
Check chart for proper gauge
wire and cord length. If possible,
eliminate extension cord.
Defective motor, motor capacitor or
pressure switch.
Contact Jenny Customer Service
at 1-888-4-A-JENNY.
Tanks have air pressure in them. Bleed tanks fully.
Engine oil too low. Low oil shut off
is on.
Add engine oil.
Manual lock on pilot valve is in the
loaded position.
Move manual lock into an in-line
position.
Engine idle speed too low. Increase idle speed.
Engine problem. See “Taking care of unexpected
problems” in engine owners
manual.
Compressor Stalls Air compressor on unlevel surface. Do not incline the air compressor
more than 10° in any direction
while running.
Engine idle speed too low. Increase idle speed.
Engine problem. See “Taking care of unexpected
problems” in engine owners
manual.
Unit does not or is slow to come up
to speed.
Lubricant viscosity too high. Drain existing lubricant and ref ll
with Jenny Ultimate Blue Synthetic
lubricant.
Carbon build up on top of piston. Clean piston. Repair or replace as
required.
Connecting rod, piston pin, or
crank wrist pin bearings worn or
scored.
Inspect all. Repair or replace as
required.
Crankshaft seal worn or crankshaft
scored.
Replace seal or crankshaft
assembly.