5. The battery of pM Series oxygen concentrator model is NI-MH charge battery (3.6V/40mAh), which welded on the
main board and there is a charge circuitry in the board, so it could be used by a long time. But if you could not use
the oxygen concentrator continually, the battery will be at the dormancy state and its life will be shorter. So, please
charge the battery one time every month if you could not use the oxygen concentrator continually.
6. If the user want the circuit diagram the list of critical components the detail of maintenance and repair, we will
supply the data about all the repairable parts which we can supply.
Troubles and solution
No.
Trouble
1
No operation after
power connected
2
No oxygen out or
tiny outtake flow
3
No exhaust sound
4
Too noisy
exhaustion
Diagram 12
Causes
1. No connection between circuit
of oxygen generator and power
2. Circuit of fuse protector broken
3. Capacitor of compressor broken
4. Compressor broken
1. Folded inside oxygen tube, no
smooth outtake
2. Filter clogged, no smooth
intake
3. The cover of dampen bottle
leaking
1. Air controller cannot work
2. Electrical control board cannot
work
1. The joint of exhaustion muffler
fallen off
2. Exhaustion muffler broken
Solution
1. Check out whether switch, plug, power
line in good connection.
2. Replace the fuse protector and find the
cause
3. Replace start capacitor
4. Have the compressor replaced
1. Connect the oxygen tube again
2. Clean the filter
3. Take off the cover, screw well the cover,
block the outtake by thumb after turning
on, and there will some sound from the
humidifier after 5 second around (the
safety valve of humidifier turns on)
1.Have air control valve replaced
2.Have electric control board replaced
1. Connect the joint well
2.Have the muffler replaced
27