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Replacement procedures
IMPORTANT:
Place a removed module in an antistatic bag or its original shipping materials.
Cleaning the air filters
The air filters of a 12500 switch fall into the following types:
• Chassis air filter—No chassis air filter is shipped with the 12500 chassis by default. You can order
one as needed.
• Power supply air filter—A 12500 chassis is installed with a power supply air filter when shipped by
default.
To guarantee good ventilation of the switch and power supplies, HP recommends that you clear the air
filters monthly.
Cleaning the chassis air filters for a 12508
A 12508 has front and rear chassis air filters.
Cleaning a front chassis air filter
1. Holding the notches of the front plastic panel at the bottom part of the chassis, and gently pull the
plastic panel out.
2. Loosen the screws that fix the chassis air filter to the rear of the plastic panel, and remove the
chassis air filter from the plastic panel.
3. Use clean water to wash the chassis air filter, and air-dry it.
4. Install the chassis air filter to the correct position. For more information, see "Installing the switch."
Figure 61 Removing the front chassis air filter of a 12508 chassis
Cleaning a rear chassis air filter
1. Loosen the captive screws at both sides of the rear chassis air filter, and remove the rear chassis
air filter.
2. Take off the sponge at the rear of the chassis air filter. Use clean water to wash the sponge (do not
rub the sponge), air-dry the sponge, and then install it to the rear of the chassis air filter.
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