PRESSURE RELIEF VALVE BLOWS
PROBABLE CAUSE
Differential pressure regulator not set correctly.
Air pressure switch not set correctly.
Air inlet valve not closing properly in relation to air
demand.
Plugged separator.
Faulty receiver pressure gauge.
Faulty pressure relief valve.
CORRECTION
Readjust differential pressure regulator to obtain desired
modulation ramze.
Readjust air pressure switch so that the compressor
unloads at the desired pressure.
Correct the situation in accordance with the instruction
in “Inlet Valve not Opening or Closing in Relation to
Air Demand” section of this trouble shooting guide.
Replace with new air/fluid separator.
Check gauge for accuracy and replace if necessary.
Readjust controls.
Check safety valve for correct pressure setting. If valve
is still leakimz redate it.
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