50 Troubleshooting
A CR2430 button cell supplies auxiliary power to the
electronics if the main batteries fail. This makes it
possible to set off an alarm if the main batteries fail.
The battery capacity is calculated to be sufficient for
power requirements under normal operating condi-
tions for the full period between servicing every two
years. All the batteries are replaced every two years
between servicing.
We recommend having the batteries changed only
by WEINMANN Emergency the manufacturer or by
qualified persons expressly authorized by that com-
pany. Special precautions need to be taken during
the change in order to prevent disruption of the elec-
tronics.
The following action should be taken in emergen-
cies:
Battery replacement
Important note!
In order to prevent damage
to the electronics, avoid all
contact with the printed
circuit board unless ade-
quate protection against
electrostatic charge is
available.
1. Unscrew the back panel of MEDUMAT Standard
(6 cross-slotted screws).
2. Tilt the CR2430 button cell slightly to remove it.
3. Insert a new button cell.
Important note!
The 3,6 V lithium battery is
specially designed for this
ventilator. Only batteries
supplied by WEINMANN
Emergency should be used.
4. Remove the plug from the printed circuit board
and lift the 3,6 V lithium battery out of its
holder.
5. Insert the new battery.
6. Replace the back panel of MEDUMAT Standard.
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