User Manual

6. Maintenance
Page 44
MF0150A9A Manual for ION-M23 SDARS
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.
5. To mount the new fan unit, re-
connect the earth-bonding cable
and the fan connector (see step 4).
Then, place the fan unit back into
its original position and fasten it
tight:
6. Screw the whole fan unit to the cabinet with the four tallow-drop screws M4x8
(see step 2). In order not to exceed the specified torque of 3.3 Nm, use an
appropriate tool.
Fan-unit connector
Earth-bonding cable