Centrox Instruction Manual
53
AirSep Corporation
Problem
Probable Cause
Solution
Oxygen receiver pressure
registers less than 50 psig
(345 kPa).
Defective solenoid valve.
Identify and rebuild valve.
Defective wire to circuit
board.
Repair or replace wire.
Oxygen leak in system.
Check oxygen concentrator
for leaks. Repair as
necessary.
Leaky check valves in check
valve assembly.
Clean or replace check
valves.
Plugged waste muffler.
Replace muffler.
System does not cycle
properly.
Check all wires and
connections. Repair
as needed. If problem
continues, replace circuit
board.
Defective circuit board.
Replace circuit board. (Refer
to Section 8.2.2).
Compressor pressure not
adequate.
Replace compressor.
Molecular sieve
contaminated.
Replace molecular sieve.
Contact AirSep Commercial
Service Department for
assistance.
Solenoid valve chatters
loudly.
Low voltage condition.
Check power supply.
Dirty valve.
Clean or rebuild valve.
Worn valve core.
Rebuild valve.
Bad Coil.
Replace Coil.
Low voltage to valve from
circuit board.
Replace circuit board. (Refer
to Section 8.2.2).
