Hardware Installation Manual 50 Document #: LTRT-28030
6.3 Replacing the Air Filter
The air filter is intended to prevent dust and other airborne particles from entering the
chassis and adversely affecting its components. To maintain proper operation of the
device, you must periodically replace the air filter. The frequency of replacing the air
filter depends on the cleanness at the installation site. In installation rooms with extra-
building openings (exposed to dust and/or air particles), you may need to replace the air
filter once every 3 months. In cleaner rooms (e.g., no extra-building openings), you may
need to replace the air filter once every 6 months. In air-purified (conditioned) rooms, air
filter replacement can be done annually. It's the user's responsibility to determine the
cleanness level and the air filter replacement frequency.
Warning:
• The device's components may be damaged due to a dirty or blocked air filter.
• Replace the air filter only with an air filter purchased from AudioCodes.
• Before removing the air filter, make sure that you have the replacement air filter on
hand so that you can replace it immediately.
Note: The air filter is hot-swappable.
To replace the air filter:
1. On the front panel, remove the Fan Tray cover, by loosening the four Philips-head,
spring-loaded captive screws located in each corner of the cover and then gently
pulling the cover away from the chassis:
Figure 6-5: Removing Fan Tray Cover on Front Panel
2. Remove the air filter cover, located on the inside of the Fan Tray cover, by removing
the two flat-head, spring-loaded captive screws located on either side of the air filter
cover, using a flathead screwdriver:
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