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TROUBLESHOOTING Teledyne API M751H High Performance Zero Air Generator
42 07773A DCN6833
Problem
Probable Cause
Corrective Action
Output pressure surges.
Pressure regulator is set too high
and pegged.
Adjust pressure regulator down.
Output air is not “Zero”.
Scrubbers may be contaminated.
Replace the scrubbers.
Output air is not dry.
4-way valve is jammed; only one
column is being used.
Check to ensure the valve is
plugged in; replace the valve.
Reflux flow controller is plugged.
Replace the upper manifold
assembly.
Molecular sieve is contaminated.
Replace the molecular sieve.
CAUTION
THE 751H NOMINAL DELIVERY PRESSURE IS 30 PSIG.
NEVER SET THE DELIVERY PRESSURE HIGHER THAN 35 PSIG.
TO DO SO MAY CAUSE DAMAGE TO THE 751H AND INJURY TO
THE OPERATOR.