17
CORRECTIVE ACTION
Check that timer circuit is not sending
a control signal.
Check Purge Valve.
Check Purge Valve. Repair and
replace if necessary.
Check that timer circuit is sending
control signal.
Purge muffler is dirty; replace.
Check Inlet Valve and Outlet Check
Valves. Verify Inlet Valve is closed to
purging tower (0 psig tower).
Reset when right tower is on line.
PROBLEM
Dryer fails to
pressurize.
Dryer fails to purge.
Excessive back
pressure in regener-
ating tower (above 5
psig)
Right tower
excessively high
pressure at the purge
gauge.
PROBABLE CAUSE
Faulty purge valve.
Purge valve does not open.
Purge valve stuck in closed
position.
Purge muffler does not pass
air.
Purge muffler passes too
much air. Air is leaking across
valve.
Improper calibration.
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