
Maintenance
Fiber Guardian 249
Replacing the Fan
Replacing the Fan
Your unit is equipped with one fan located at the front of the unit’s casing. If
you ever need to replace the fan, you must purchase a new one from
EXFO.
WARNING
To avoid serious injuries as well as irreparable damages to your unit,
ALWAYS TURN OFF BOTH DISCONNECT DEVICES BEFORE OPENING
OR SERVICING THE UNIT.
CAUTION
To avoid damaging your unit or its components, you should wear
an antistatic band during this maintenance operation. For more
information, see Preventing Electrostatic Discharge Damage on
page 23.
CAUTION
Use only fans designed for your unit and approved by EXFO.
IMPORTANT
Replacing the air filter at the recommended intervals may prolong
the life of the fan.
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