AirSep ALPHA Series User Manual

AS-D+—AS-P Series Instruction Manual 51
AirSep Corporation
Problem Probable Cause Solution
Oxygen concentration
below specied
concentration (50–
70%).
Oxygen Sample ow
line obstructed.
Ensure that all
the valves on the
oxygen sample line
to the concentration
monitoring board are
open.
Ensure that the oxygen
regulator on the oxygen
sample line is set at ~6
psig.
Low concentration
oxygen during initial
start-up.
Start unit as described
in Chapter 6.
Unit shutdown for
extended period—no
pressure in oxygen
system.
Start unit as described
in Chapter 6.
Momentary power loss.
Vent low concentration
oxygen from system as
described in Chapter 6.
Inadequate feed air.
Check air lines for
obstructions or adjust
or replace feed air
regulator.
Valves not cycling
properly.
Replace or rebuild the
valves as necessary.
Oxygen concentration
monitoring board
defective.
Replace the oxygen
concentration
monitoring board.
Improperly wired PLC.
Check the wiring or
replace PLC.
Solenoid valve not functioning properly. Check for the
following causes:
Defective coil. Replace coil.
Loose or defective wire
to valve.
Repair or replace wire.
Defective PLC. (No
power output to valve.)
Replace PLC.
Valve remains
energized and open.
Check the valve or the
PLC output LED.
Defective valve. Rebuild valve.
Worn internal parts on
valve.
Rebuild valve.

AirSep ALPHA Series Specifications

General

Brand	AirSep
Model	ALPHA Series
Category	Oxygen Equipment
Language	English