•
Check the status-reporting devices on the craft interface: system alarms, LEDs, and
LCD.
•
Inspect the air filters at the bottom front and left rear of the router. Do not run the
router for more than a few minutes without the air filters in place.
Check the air filters regularly 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.
Related
Documentation
T4000 Cooling System Description on page 21
•
•
T4000 Craft Interface Description on page 23
•
Maintaining the T4000 Air Filters on page 180
Maintaining T4000 Cooling System Components
•
Maintaining the T4000 Air Filters on page 180
•
Maintaining the T4000 Fan Trays on page 181
Maintaining the T4000 Air Filters
Purpose
For optimum cooling, verify the condition of the air filters.
Air filters for both the front and rear fan trays help keep dust and other particles from
entering the cooling system. To function properly, the entire cooling system requires an
unobstructed airflow and proper clearance around the site, as described in
“T4000
Clearance Requirements for Airflow and Hardware Maintenance” on page 59
. See
Figure 88 on page 180
.
Figure 88: Airflow Through the Chassis
Action
Check the air filters regularly 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
Copyright © 2013, Juniper Networks, Inc.
180
T4000 Router Hardware Guide
Summary of Contents for T4000 -
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