USER MANUAL
JEFC050L08B Series
50L
AIR COMPRESSOR
•
2HP
•
8Bar
•
Direct Drive
www.jeffersontools.com
10
TROUBLESHOOTING
FAULT
CAUSE
REMEDY
Tank pressure drops continually.
Air leak, check all connections.
Locate and rectify leak. Run the compressor at maximum
pressure then switch off and disconnect. Brush a soapy
water solution over the connections and look for bubbles.
Tighten any connections showing leaks. If problem
persists contact your authorised service agent.
Tank pressure won’t build up.
The drain valve is open.
Close the tank drain valve.
The compressor won’t switch off.
The safety valve blows off.
Compressor does not stop when maximum
pressure is reached.
Pressure switch fails to stop motor. Faulty pressure
switch.
Contact your authorised service agent.
Tank pressure won’t build up and the pump
is getting hotter than normal, inlet suction
is poor.
The compressor head gasket or valve plate is faulty.
Fault with the air filter.
Contact your authorised service agent.
Check, clean, replace air filter as required.
There is a leak from the base of the
pressure switch when the compressor is
running.
Failure of the pressure relief valve. (Located in the base
of pressure switch).
Contact your authorised service agent.
There is a leak from the base of the
pressure switch when the compressor is
stopped.
The Non-return valve (from the tank) is leaking.
Disassemble and clean, if necessary replace valve insert.
Contact your authorised service agent.
The compressor is noisy with metallic
clangs / knocks.
Bearing or piston problem.
Low oil level.
Stop the compressor and contact a specialized service
technician.
The compressor sounds like it is trying to
start (motor makes a humming noise).
Air pressure trapped on piston is resisting the starting
effort.
Faulty capacitor or fault within the electric motor.
Turn unit off and on again using the pressure switch. This
will vent air from the delivery tube.
Stop the compressor and contact a specialized service
technician.
Overload switch activated.
Startup load may have activated overload switch.
Extension lead is too long (if in use).
Head unloader not functioning.
Leave for a few minutes then press the reset button and
restart.
Remove the extension lead and test compressor by
connecting the compressor as close to the main fuse box
as possible.
Stop the compressor and contact a specialized service
technician.
Air leaks from the safety valve at pressures
less than 8 bar.
The safety valve is faulty.
Replace the safety valve.
Compressor stops and will not restart.
Power failure.
Motor Failure.
Check electrical supply and fuse.
Contact your authorised service agent.
