CommScope ION-M7P/17EHP, Руководство пользователя

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6. Maintenance
Page 40 MF0150A3A.doc Manual for ION-M7P/17EHP
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 and observe chapter
1.2 Health and Safety
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.
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 N-m, use an
appropriate tool.
Fan-unit connector
Earth-bonding cable