Andrew Wireless Innovations Group RPT-MMR8-19I User Manual

User’s Manual for Remote Unit

MMR8/19

Page 36

M0106A7E.doc

7.2.

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, the unit has to 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 chapter 1.2 Health and Safety Warnings as
well as the instructions in chapter 7.1 General before starting with the replacement
procedure. Then, proceed as follows:

1. 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.

2. Remove the fan plate with 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.

3. Unscrew the fan connector and

disconnect the earth bonding cable.

Note:

To observe the specified torque of 650 Ncm for an M5 thread, use
an appropriate tool for the following screwing procedures.

4. To remove the fan plate, loosen the M5 nut (as shown in figure 7-1 Fan unit

assembly) as well as the corresponding contact washers and flat-plug. Then,
loosen the eight tallow-drop screws by which the fan unit is screwed to the fan
plate (seven screws M5x14 and one M5x20).

Note:

Do not unscrew the screws completely. Only loosen them till the
fan unit can be taken off.

Fan unit connector

Earth bonding cable