Replacing an Air Filter
Context
To prevent the air filter of a switch from being blocked by dust and to ensure efficient heat dissipation, it is recommended that you replace or clean an air filter at least once every six months. When a switch is used in a dusty environment, clean or replace its air filter more frequently, for example, once every two weeks or one week.
The switches may use honeycomb air filters or non-honeycomb air filters. The switches with honeycomb air filters installed in all air filter slots comply with Federal Communications Commission (FCC) standards.
The methods for replacing the air filters on different models are the same. This section uses S12708 as an example to describe the replacement procedure.
Procedure
- Determine in which cabinet and chassis the air filter is installed, find the air filter in the chassis, and attach a label on the air filter to avoid misoperation.
- Wear an ESD wrist strap or a pair of ESD gloves. When wearing an ESD wrist strap, insert the other end in the ESD jack of a device and ensure that the device is reliably grounded.
- Remove the air filter.
- Slowly pull the air filter out. See callout 2 in Figure 13-15.
- (Optional) Dry clean the sponge air filter.
- Tap the air filter to remove thick dust.
- Vacuum the air filter.
If the switch uses a honeycomb air filter, replace the air filter.
- Install the air filter.
- Tighten the captive screws on the filter with the Phillips screwdriver. See callout 2 in Figure 13-16.
