Service Manual

GSM-205-523
Replacing a fan module
31st Oct 01
Maint. 2–12
Maintenance Information: Horizon macro indoor
CONTROLLED INTRODUCTION
68P02902W09-B
Identifying fan
module
There are three cabinet fan modules, one 4-fan unit and two identical 2-fan
modules. Table 2-2 shows the three fan positions.
Table 2-2 Fan positions
Fan
reference
Type of module Cabinet position
0 4-fan unit Right side, underneath digital cage.
1 2-fan unit Middle, beneath CTUs.
2 2-fan unit Left side, beneath CTUs.
Replacing fan
modules
CAUTION If the cabinet is operational, this replacement procedure
should be completed without delay to minimize the
duration of air cooling disruption.
To replace the fan:
1. Lift the central slide latch.
2. Pull out the fan module.
3. Insert the replacement module firmly in place, ensuring the slide latch has
engaged.
4. Ensure all fans are operating. Any fan not operating should be started by
using the appropriate RESET button.