User's Manual

6 Maintenance
Page 43 MF0145AQA.doc
6.2. REPLACING THE FAN UNIT
Replacement of the fan unit is not required as a preventative measure. Only if an
alarm indicates a malfunctioning of a fan must the unit be exchanged.
 Note: Please observe that the fan unit can only be replaced as a whole.
Do not remove the fans separately.
Read the health and safety warnings in section 1.2 as well as the instructions in
section 6.1 General before starting with the replacement.
1. Switch off the Remote Unit. Make sure mains is disconnected for the
following replacement procedure. Then, proceed as follows:
2. Loosen the four tallow-drop screws
M4x8 by which the fan plate is
screwed to the cabinet. Remove the
four screws and the corresponding
washers.
3. Remove the fan unit – by putting slight
pressure on the fan plate cover – to a
position that allows access to the fan
connector and the earth-bonding
cable.
4. Unscrew the fan connector and then
disconnect the earth-bonding cable.
Fan-unit connector
Earth-bonding cable