Cisco ONS 15327, User Documentation

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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 12 Maintenance
Air Filter Inspection and Replacement
12.1 Air Filter Inspection and Replacement
The Cisco ONS 15327 contains an air filter that should be removed and visually inspected approximately
every 30 days, depending on the cleanliness of the operating environment. The filter is reusable and
made of a gray open-cell polyurethane foam, specially coated to provide fire and fungi resistance.
Figure 12-1 illustrates the reusable fan-tray air filter. You do not need to remove the fan-tray assembly
to remove the air filter.
Procedure: Inspect and Clean the Reusable Air Filter
Step 1
Move any cables that are routed in front of the fan-tray assembly and air filter so you can easily slide the
filter out, as shown in
Figure 12-1 .
Step 2 Grasp the metal tab at the edge of the filter and slide the filter out of the bracket while being careful not
to dislodge any dust that may have collected on the filter (
Figure 12-1 ).
Step 3
Visually inspect the filter material for dirt and dust.
Step 4 If the reusable air filter contains a concentration of dirt and dust, either vacuum the filter and replace it
or wash the filter under a faucet with a light detergent. Prior to washing the air filter, replace the dirty
air filter with a clean air filter (spare filters should be kept in stock). Wash the dirty air filter under a
faucet with a light detergent.
Note Cleaning should take place outside the operating environment to avoid releasing dirt and dust
near the equipment.
Step 5
If you washed the filter, allow it to completely air dry for at least eight hours.
Warning Do not put a damp filter back in the ONS 15327.
Step 6 Slide the filter back into the shelf ( Figure 12-1 ).