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SECTION 6
TROUBLESHOOTING GUIDE
Symptom
Possible Problem
Suggested Remed
Visible | Audible | Compressor
Other
!
'
*
99
y
Alarm
Alarm
On or Off
Symptoms
6.
OFF
OFF
ON
Fluctuating | Occluded humidifier
Clean or replace humidifier
flee
Use of improper humidifier
Use only a bubble type humidifier
Occiuded filters
Clean or replace filters
Occluded or defective cannula
Detach cannula from O2 delivery
and tubing
tubing. If proper flow is not at-
tained, check tubing for kinks or
other obstructions. Clean or
straighten as required or replace
tubing if necessary.
Use of excessive tubing
The unit is designed to deliver 5
Ipm with a cannula on 50 feet (15
meters) of approximately 5/32"
(4mm) inside diameter tubing.
Small diameter tubing or the addi-
tion of any other flow restriction
may prevent obtaining the desired
flow rate.
Defective flow meter
Replace flow meter
Air leak in system
Check for leaks in all hoses and
fittings
Defective compressor
Replace compressor
Defective reed valve
Replace reed valve
Defective check valve
Replace manifold base
Pressure regulator not adjusted
|] Adjust or replace pressure
properly or defective
regulator
7.
OFF
OFF
ON
Littleorno
{Flow meter not adjusted
Adjust flow meter
oxygen
properly
flow
Hose disconnected to flow
Reconnect hose
meter
Oxygen delivery tubing is
Straighten tubing or remove
kinked or blocked
obstruction
Occluded humidifier
Clean or replace humidifier
8.
OFF
OFF
ON
Audible
Defective 9 voit battery
Replace 9 volt battery
alarm does
Defective wire harness
Repair or replace wire harness
when unit _ | Defective sonalert
Replace MC board
isturned on } Defective MC board
Replace MC board
9.
OFF
OFF
ON
Low 02
Leaks in system
Check all hoses and fittings
on sn
Defective check valves
Replace manifold base
possible
Defective reed valve
Replace reed valve
increasein | Defective compressor
Replace compressor
cycle time | Four-way valve not fully shifted
| Clean or replace four-way valve
Occluded filters
Replace filters
Purge valve stuck in de-
Refer to Section 7, Service Instruc-
activated position
tions, on How to Trouble-shoot
Purge Valve
10.
OFF
OFF
ON
Low 02
Contaminated sieve beds
Replace sieve beds
concentra-
tion and
decrease in
cycle time
11
10/87
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