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SYMPTOM:
LOW CONCENTRATION:
NOTE: Check for O2 purity
using a calibrated Oxygen Ana-
lyzer at Test Point 1 (OXYGEN
OUTLET) of the concentrator.
Internal Status Indicators:
RED: On GREEN: Off
( LX Control Board )
RED: Two (2) Flash
GREEN : One (1) Flash
73% Shutdown
(Integrated Sensor Board)
RED: Two (2) Flash
GREEN : Two (2) Flashes
85% Shutdown
(Integrated Sensor Board)
Control Panel Indicators:
SensO2 ONLY:
RED: On
YELLOW: Off
GREEN: Off
For SensO2 units, the Red indica-
tor will signal extremely low purity
and will be accompanied by a
continuous audible alarm and a
system shutdown. Repairs are
required.
Internal Status Indicators:
RED: Off GREEN: Off
( LX Control or Integrated Sensor
Board)
Control Panel Indicators:
SensO2 ONLY:
RED: Off
YELLOW: On
GREEN: Off
A Yellow indicator signals low
purity, but within specification for the
user. Repairs are required.
NOTE: REFER TO THE REPAIR/REPLACEMENT GUIDE IN THIS MANUAL FOR PROPER
TROUBLESHOOTING GUIDE
PROBABLE CAUSE:
1. Cabinet Filters Dirty.
2. Inlet Filter Dirty.
3. Compressor.
a. Defective.
b. Faulty Capacitor.
c. Bad Motor Windings.
d. Worn Seals.
e. Bad Bearings.
f. Leak at fittings or tubing.
g. Leaky or Defective Relief
Valve.
h. Insufficient voltage (outlet).
4. Heat Exchanger.
a. Leak at tubing or body cham-
ber.
b. Inspect tubing and Heat
Exchanger.
5. Regulator Cracked or Leaking.
6. Exhaust Muffler dirty or plugged.
7. Fan
a. Not Operating. Unit overheat-
ing.
b. Faulty Fan.
8. Sieve Beds defective
9. Tubing kinked or blocked.
10.P.C. Board
a. Shifts at wrong pressures.
b. Pressure transducer tubing
leaks.
REPLACEMENT OR ADJUSTMENT PROCEDURES
TROUBLESHOOTING GUIDE
1. Clean or Replace (PROCEDURE
2. Replace (PROCEDURE 2).
3a.Replace Compressor (PROCE-
3b.Replace Capacitor (PROCE-
3c.Replace Compressor (PROCE-
3d.Rebuild Top End of Compres-
3e.Replace Compressor (PROCE-
3f. Replace Fittings or Tubing.
3g.Replace Relief Valve.
3h.DO NOT use extension cords.
4a.Replace or Retighten.
4b.Replace or retighten tubing.
5. Replace (PROCEDURE 6).
6. Replace (PROCEDURE 2).
7a.Leads to fan Disconnected.
7b.Replace (PROCEDURE 10).
8. Replace (PROCEDURE 4).
9. Repair or replace.
10a.Check pressure at product tank.
10b.Inspect tubing at transducer and
17
SOLUTION:
2).
DURE 7).
DURE 7).
DURE 7).
sor (PROCEDURE 2).
DURE 7).
Replace Heat Exchanger (PRO-
CEDURE 8).
Reconnect (PROCEDURE 10).
Pressure should rise to 20 p.s.i.
at shift point. If not, replace P.C.
Board (PROCEDURE 21).
at product tank. Replace tubing
ONLY if damage is evident.
(PROCEDURE 9).
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