Nordmann DC4 - 6.5 Replacing the Backup Battery on the Control Board

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6.5 Replacing the backup battery on the control board
1. Set the Nordmann RC4/DC4 out of operation as described in chapter 4.3, disconnect it from
the mains and secure the unit against inadvertent power-up.
2. Loosen the xing screw of the front cover on the bottom side of the intermediate panel a few turns.
Pull the lower part of the front cover to the front, then push the cover upward and remove it.
3. Undo the two screws of the intermediate panel. Then, carefully remove the intermediate panel to
the front, swivel it to the left and hang it onto the pins of the back panel.
CAUTION!
The electronic components inside the humidier are very sensitive to electrostatic discharge.
Before carrying out the next step, appropriate measures must be taken to protect the electronic
components against damage caused by electrostatic discharge (ESD protection).
4. Replace the backup battery (CR1632, Lithium 3V).
5. Reassemble the unit in reverse order.
6. If necessary set date and time (see chapter 4.6.8 and 4.6.9).
WARNING!
Environmental hazard!
The old battery must be returned to an authorised collecting point for correct disposal/
recycling in accordance with local regulations. In no case the old battery must be
disposed of in the domestic waste or into the environment.