PaloAlto Networks PA-5000 Series, Hardware Reference Manual

Page: 27 / 34

Palo Alto Networks Maintaining the Hardware • 27
Replacing the Fan Tray and Air Filter
Replacing the Air Filter
Inspect the air filter on a periodic basis. A dirty air filter restricts airflow in the unit, reducing the
ventilation and effective cooling of the system. To maintain optimum system operation, Palo Alto
Networks recommends that you replace the filter every 6 months. Discard used filters; do not attempt to
clean and reuse them. You can purchase replacement air filters from Palo Alto Networks or an
authorized reseller.
You can replace the air filter without replacing the full fan tray. It is not necessary to power down the
firewall to replace the air filter.
To replace the air filter.
1. Remove the fan tray metal cover, as described in “Replacing the Fan Tray and Air Filter” on
page 25.
2. Gently lift the plastic tab and slide the air filter out.
Figure 19. Removing the Air Filter
3. Slide the new filter in, making sure that the plastic tab on the new filter faces out with the screw
that secures the plastic tab at the top.
4. Replace the metal plate and secure the thumb screws, using a flat or Phillips head screw driver.