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18
TROUBLESHOOTING GUIDE
SYMPTOM:
PROBABLE CAUSE:
SOLUTION:
11.Flowmeter.
a. Flowmeter opened beyond
maximum flow rate.
b. Cracked or broken Fitting.
c. Input tubing leaking or loose.
12.Timing.
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TROUBLESHOOTING GUIDE
14. Replace P.C. Board. Unit may
need retiming after board
replacement (PROCEDURE
11).
13. P.E. Valve.
a.Bad Coil.
b.Restrictor Blockage.
14. Inspect P.C. Board Restrictor
tubing for kinks or tears.
FLUCTUATING FLOW:
NOTE: REFER TO THE REPAIR/REPLACEMENT GUIDE IN THIS MANUAL FOR PROPER
REPLACEMENT OR ADJUSTMENT PROCEDURES
1. Regulator/Flowmeter.
a. Incorrectly set regulator.
b. Flowmeter malfunction.
UNIT EXCESSIVELY LOUD:
1a.Replace. (PROCEDURE 2).
2a.Install new resonator.
2b.Reconnect tubing or replace.
1. Pneumatic Exhaust.
a. Muffler cracked, damaged or
missing.
b. Muffler tubing disconnected or
damaged.
2. Intake Resonator.
a. Damaged or missing.
b. Tubing disconnected or dam-
aged.
3. Inlet Filter missing.
4. Compressor.
12. To accommodate for varying
tolerances when replacing com-
ponents, an adjustable timer is
used to control the shifting of the
Invacare 5 Pressure Equaliza-
tion (P.E.) Valve (PROCE-
DURE 18).
13a. Replace P.E. Valve (PROCE-
DURE 3).
13b. Replace P.E. Valve (PROCE-
DURE 3).
1a.Check pressure at oxygen outlet.
Adjust Regulator (PROCEDURE
6).
1b.If flow is still unstable, check for
leaks starting at the compressor
outlet fitting through all pneumatic
connections. If no leaks are found
and flow is still fluctuating, replace
the regulator (PROCEDURE 6).
If pressure at test point is within
spec (5 p.s.i. + 0.2 max. [34.4 kPa
+ 6.89]), replace flowmeter
(PROCEDURE 14).
1b.Reconnect or replace tubing.
3. Replace inlet filter.
4. Replace Compressor. Internal
damage (PROCEDURE 7).
11a.Return flow to maximum setting.
11b.Replace fitting.
11c. Repair or replace.
LOW CONCENTRATION,
Continued:
2. Bacteria Filter
a. Dirty or Plugged
2a. If low flow conditions persists,
replace bacteria filter.
Summary of Contents for 3LX
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