Troubleshooting, Service, And Repair Procedures - CAIRE Companion 5 Technical Manual

Troubleshooting, Service, and
Repair Procedures
CAUTION The Companion 5 contains electrostatic sensitive
components. Do not open or handle except at a
static free workstation. Do not remove cover with-
out ESD protection.
General Troubleshooting
Before reviewing the troubleshooting chart, the following steps
may be useful to isolate any malfunctions:
1. Turn on the concentrator. If the unit does not turn on, refer
to the troubleshooting chart.
2. Allow the unit to warm up for approximately 10 minutes and
check oxygen concentration.
3. Perform the flow rate test. Verify flows are within acceptable
range per Table 8.
4. Make sure the unit is cycling properly by observing the flow
meter ball is stable (flow meter ball does not move up and
down more than ¼ liter.)
5. Place your thumb over outlet of unit. The flowmeter ball
should drop to the bottom of the flowmeter. If the ball does
not drop completely to the bottom, there is a leak present
between the top of the flowmeter and the outlet of the unit.
6. If concentrator is not meeting specifications, make sure that
the unit is leak-free by testing all tubing connections and fit-
tings with leak testing solution. Protect circuit board(s) from
solution and start leak test at the compressor, following air
flow to oxygen outlet. Repair all leaks by tightening connec-
tions and fittings.
7. If unit is alarming, refer to the Alarm Indicator Chart for
probable solutions.
Oxygen Concentrator
PN 14940837 B — 25