LF Kobalt TQ3126 Manuel page 19

troubleShootinG
problem
Large quantity of
oil in the discharge
air
NoTE: In an
oil lubricated
compressor there
will always be a
small amount of oil
in the air stream.
Water in discharge
air / tank
Motor hums and
runs slowly or not
at all
poSSible CauSe
1. Worn piston rings
2. Compressor air intake
restricted
3. Excessive oil in
compressor
4. Wrong oil viscosity
Normal operation. The
amount of water increases
with humid weather
1. Low voltage
2. Too many devices on
same circuit
3. Loose electrical
connections
4. Malfunctioning pressure
switch - contacts will not
close
5. Malfunctioning check
valve
6. Defective unloader valve
on pressure switch
7. Defective motor
capacitor(s)
8. Defective motor
CorreCtiVe aCtion
1. Replace with new rings. Maintain oil level and
change oil more frequently.
2. Clean or replace filter. Check for other
restrictions in the intake system.
3. Drain down to full level.
4. Use Mobil 1 10W-30 or full synthetic.
®
1. Drain tank more often. At least daily.
2. Add a filter to reduce the amount of water in the
air line.
1. Check incoming voltage. It should be
approximately 230 volts. Motor will not run
properly on 208 volts. Low voltage could be due
to wires (from electrical source to compressor)
being too small in diameter and / or too long.
Have a qualified electrician check these
conditions and make repairs as needed.
2. Limit the circuit to the use of compressor only.
3. Check all electrical connections.
4. Replace pressure switch.
5. Replace check valve.
DanGer
risk of explosion. Do not
disassemble check valve with air
pressure in tank.
6. Replace unloader valve.
7. Replace capacitor(s).
8. Replace motor.
19