NEC SV8500, Operation And Maintenance Manual

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CHAPTER 5 Operation Procedure for System with PIR
2.6 Replacement Procedure of FANs (PIR/TSWR)
This section explains how to replace a FAN that is accommodated in PIR or TSWR FAN
can prevent the system from overheating, which might cause malfunction or failure. We
recommend that FAN should replace every five years.
Figure 5-6 FANs Accommodated FAN tray
[START]
STEP 1: Identify a faulty FAN if this replacement is not regular FAN replacement.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
PZ-M699
FANU
FAN0
FAN1
FAN2
FAN PWR SW
ON
FUSE
MADE IN JAPAN
xxxx xxxx xx
FANs
FAN Tray
FANC
FRONT
FANs are mounted on FAN tray as shown below. To replace a FAN, the FAN tray must be removed from
the system.
Do not put your finger to operating FAN box. Before replacing a FAN, make sure that the
FAN blades are completely stopped.
CAUTION
Complete the entire procedure within about 15 minutes; where the temperature is around 77
degrees F.
CAUTION
It is not necessary to turn off the power of PIR/TSWR during FAN replacement.
CAUTION