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15
TROUBLE SHOOTING
Problem Cause Solution
Excessive tank
pressure - safety
valve pops off.
• Pressure switch does
not shut off motor
when compressor
reaches “cut-out”
pressure.
• Pressure switch
“cut-out” too high.
• Switch the compressor “OFF”
If the unit doesn’t shut off,
unplug compressor.
• Contact an authorized
qualified service center.
Air leaks at
fittings.
• Tube fittings are not
tight enough.
• Tighten fittings where air can
be heard escaping. Check
fittings with soapy water
solution. DO NOT OVER-
TIGHTEN.
• Use Teflon tape to improve
fittings of tubes.
Air leaks at or
inside
check valve.
• Malfunctioning or
dirty check valve.
• A malfunctioning check valve
results in a constant air leak at
the pressure release valve
when there is pressure in the
tank and the compressor is
shut off.
• Drain tank then remove and
clean or replace check valve.
DO NOT OVERTIGHTEN.
Air leaks at
pressure
switch release
valve.
• Malfunctioning
pressure switch
release valve.
• Malfunctioning check
valve.
• Remove and replace the
release valve.
• Malfunctioning check valve
results in a constant air leak at
the pressure release valve
when there is pressure in the
tank and the compressor is
shut off.
• Drain tank then remove and
clean or replace check valve.
DO NOT OVERTIGHTEN.