Oxygen Concentrator
PN 14940837 B — 38
Power Switch
1. Press the power switch in the “OFF” position and unplug the
electrical cord.
2. Remove the outer case.
3. Disconnect the wires from the back of the power switch.
4. Push the switch out through the front of the case.
5. 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 con-
centrator 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. Disconnect 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.
Leak Testing
1. Press the power switch in the “OFF” position and unplug the
electrical cord
2. Remove the outer case.
3. Apply a stream of liquid leak detector (Snoop®) or a mild so-
lution of soap and water all fittings and tubing connections.
Excessive bubbling indicates a leak.
4. Replace any tubing that leaks or that appears cracked and
worn.
5. Replace the outer case.