Oxygen Concentrator
36
Oxygen Concentrator
Power Switch
1.
Press the power switch in the “OFF” position and unplug
the electrical cord.
2.
Remove the outer case.
3. Review current orientation of the switch and wire
connection locations to assure correct installation.
4.
Disconnect the wires from the back of the power switch.
5.
Push the switch out through the front of the case.
6
. To replace, reverse steps 1–
5
.
Flow Meter
1.
Press the power switch in the “OFF” position and unplug
the electrical cord
2.
Remove the outer case.
3.
Remove the two (2) clear tubes that are connected to
the
flow meter barbs. These barbs are surrounded by
the PCB.
4.
Loosen the nuts from the threaded fitting on the back of
the
flow meter using pliers.
5.
Pull outward on the flow meter from the outside of the
concentrator to remove it.
6.
To replace, reverse steps 1–5.
Power Cord
1.
Press the power switch in the “OFF” position and unplug
the electrical cord
2.
Remove the outer case.
3. Review current placement of wire connections and
d
isconnect the electrical cord’s wires from the PCB.
4.
Release the strain relief surrounding the power cord on the
back cabinet using strain relief pliers.
5.
Pull the power cord out of the concentrator.
6.
To replace, reverse steps 1–5
, assuring the power cord is
routed back through the large tie wrap.
Leak Testing
1. Turn on concentrator and allow unit to operate for a few
minutes to build up pressure.
2.
Press the power switch in the “OFF” position and unplug
the electrical cord
3.
Remove the outer case.
4.
Apply a stream of liquid leak detector (Snoop®) or a mild
solution of soap and water all fittings and tubing
connections. Excessive bubbling indicates a leak.
5.
Replace any tubing that leaks or that appears cracked and
worn.
6.
Replace the outer case.
Prior to removing the flowmeter it is
recommended to also remove the PCB to
avoid damaging the PCB.
Prior to leak testing:
Protect circuit board and all electrical components
from leak test solution and start leak testing at
compressor, following air flow to oxygen outlet. Repair
all leaks by replacing tubing or tightening connections
and fittings as needed.
Note:
For potential leak areas around the
PCB(flow meter, check valve, HEPA filter,
outlet fitting and O2 sensor connections),
it is recommended to apply leak test
solution to an applicator to avoid damage
to PCB.
