Juniper PTX5000, Hardware Manual

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Maintaining the PTX5000 Air Filters
IN THIS SECTION
Purpose | 329
Action | 329
Purpose
For optimum cooling, verify the condition of the air filters.
Action
On a regular basis:
• Check the air filters for dust and debris.
As a general guideline, we recommended that you replace the filter elements every 6 months for
routers operating in a typical environment. The filter elements degrade over time, and replacement
intervals will vary by operating environment.
• The shelf life of polyurethane filter varies from two years to five years depending on the storage
conditions. Store in a cool, dry, and dark environment. Wrap the media in plastic and store in an
environment with relative humidity between 40%- 80% and temperature between 40°F (4° C) to
90°F (32° C). Note that if the material flakes, or becomes brittle when rubbed or deformed, it is no
longer usable.
CAUTION: Always keep the air filters in place while the PTX5000 is operating. The fans
are very powerful, and could pull small bits of wire or other materials into the PTX5000
through the unfiltered air intake. This could damage the router’s components.
329