Cleaning and Replacing the Air Filter
Cleaning and Replacing the Air Filter
The air filter removes dust from the air drawn in by the blower. The edges of the air filter fit into the
lower frame of the top front chassis panel. (See Figure 2.) Remove and vacuum the air filter at least
once every two weeks (more often in unusually dusty environments). You can also wash the filter in
running water, but ensure that it is completely dry before replacing it in the chassis.
Have spares on hand in case the filter tears or becomes worn, or if you have to remove and wash it.
A dirty filter could restrict the flow of cooling air into the chassis and could cause an overtemperature
condition. You need only remove the bottom front chassis panel to access the filter.
Caution
equipment.
To clean or replace the filter, do the following:
Step 1
Step 2
Step 3
Step 4
Step 5
Caution
equipment.
Step 6
Step 7
Note
Warning
the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that
services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of
the circuit breaker in the OFF position. (For translations of this safety warning, refer to the section
"DC Power Disconnection Warning" on page 17.)
10 Cisco 7000 and Cisco 7507 Air Filter and Chassis Blower Replacement Instructions
Never place a wet filter in the chassis; the moisture drawn into the chassis can damage the
Remove the bottom front panel. (See the section "Removing the Panels" on page 6.) The
edges of the air filter fit into the lower frame of the top front panel.
Remove the filter by grasping it in the center and pulling the edges out of the frame.
Check the condition of the filter. If the filter is dirty, or if it appears worn or torn, discard it
after you ensure that you have a spare on hand.
If you wash the filter, refer to Step 6 to install a temporary replacement. If a replacement is
not available, shut down the system until the filter is dry and you can safely replace it. You
can leave the system running for a minute or less in order to vacuum the filter.
Vacuum the filter or wash the filter in running water, or discard it and replace it with a new
filter.
Never place a wet filter in the chassis; moisture drawn into the chassis can damage the
Place the new or clean, dry filter over the frame and push the edges into it with your fingers.
Ensure that all edges are tucked into the frame.
To replace the bottom front panel, align the bottom of the panel with the holes on the front
of the chassis, then push the edges in until the ball studs snap into place.
The following warning is for units equipped with a DC-input power supply.
Before performing any of the following procedures, ensure that power is removed from
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