ANSI Hardware Installation Manual Installing a 7360 ISAM FX-12 shelf
Issue: 09 3HH-12893-AAAA-TCZZA 165
DRAFT
The fan unit can be hot inserted into the shelf. The fan unit does not have an on/off
switch so removing the fan unit disconnects power provided from the backplane.
Procedure 31 To replace a fan unit
Use the following procedure to replace a fan unit.
1 Unpack the fan unit and visually inspect it for physical damage.
2 If anything is missing or damaged, notify the transportation carrier and Nokia immediately.
Photograph all the damaged equipment. Keep all the inspection and packing documents as
a reference.
3 Put on the antistatic wrist strap and connect it to a grounding point.
Danger — Risk of fire and equipment damage or system
failure when cooling with a faulty fan unit, when the fans are off,
or when the fan filter is dirty.
When a shelf in a powered system contains a faulty fan unit, or
when fans are failing or out of operation, there is a risk of active
plug-in units overheating. Fan units with dirty fan filters might
no longer assure sufficient air cooling. Plug-in units might get
seriously damaged, even ignite, or cause a system failure.
Observe the following rules:
• Before switching on the rack power, make sure the fan unit
is equipped with a clean fan filter.
• Keep all the fans in operation as long as the system is
active.
• When replacing a fan unit of an active system (for example,
during maintenance, expansion or upgrade), never keep the
fan area empty for longer than 2 minutes.
• Make sure the fan filter is clean and replace it, depending
on the amount of dust in the CO, every 3 to 6 months.
See the 7360 ISAM FX Product Information Guide for
information on orderable part numbers.
Caution — Hot insertion of the fan unit can sometimes cause
service interruption.
Warning — Possibility of equipment damage.
Do not install damaged equipment, as it can adversely affect other
equipment.
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