en-74
en
7
. . Service
Warning:
w
Servicing activities may only be carried out by
personnel who are technically qualified to do
so.
Warning:
w
Before you begin: read the safety instructions.
See also:
1.5.2 "Safety issues relating to installation, maintenance and ser-
7.1
Replacing the fan
1. Switch the unit off using the control unit.
2. Set the isolation switch to 0.
3. Detach the fan's mains power cable from the isolation
switch.
4. Undo the screw
1
in the base of the cone and remove the
screw.
5. Loosen the six screws of the cone somewhat
2
, turn the
cone so that the screws fall through the wide part of the
keyhole
3
and remove the cone
4
.
