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Diagram 11.1 Diagram 11.2
Damage: Do not operate the concentrator without the filters installed, or while filters are wet. These actions could
permanently damage the concentrator.
4. Replacement of fuse tube
Take off the cover of fuse, which is on the power socket, dismantle the fuse tube off by small screwdriver. Close the cover
of fuse after fuse tube is replaced.
The other fuse tube is located at the intake of internal power line; the method of replacement is the same with that
above. (see diagram 12)
Diagram 12
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.
Filter cloth
Secondary filter
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