Removing The Air Filter Unit From An Ex9253 Switch - Juniper EX9253 Hardware Manual

Removing the Air Filter Unit from an EX9253 Switch

Before you begin to remove the air filter unit, ensure that you have the following parts and tools
available:
• A Phillips (+) screwdriver, number 2 (not provided)
• A replacement air filter unit
WARNING: Ensure that you understand how to prevent ESD damage (see
Electrostatic Discharge Damage
The air filter unit consists of three parts–the outer filter cover, the air filter, and the inner cage. The air
filter sits between the outer cover and the inner cage. The air filter unit is installed into the cable
management brackets, and are held tightly by captive screws.
Regularly inspect the air filter. A dirty air filter restricts airflow in the unit, producing a negative effect on
the ventilation of the chassis.
CAUTION: Do not operate the switch for more than two minutes without the air filter
unit installed on it. Because the fans are very powerful, they could pull small bits of wire
or other materials into the switch chassis through the unfiltered air intake. This could
damage the switch and its components.
To remove the air filter unit:
1. Wrap and fasten one end of an ESD wrist strap around your bare wrist, and connect the other end of
the strap to the ESD point on the switch.
2. Loosen the captive screws located on either side of the air filter unit attached to the cable
management brackets on the front of the switch.
NOTE: It is not necessary to remove the cables from the cable management brackets to
access the air filter unit or the air filter.
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Prevention of