1
Fan modules
Fan module installation
The fan modules in the Z9100–ON are field replaceable. Module slot 1 is on the left side of the chassis; module slot 5 is on the right side of
the chassis.
CAUTION:
DO NOT mix airflow directions. All reverse or normal fans must use the same airflow direction. If you mix the airflow
direction, the switch detects the discrepancy, issues an alarm, and may auto-shutdown to avoid heat damage to the components.
If an auto-shutdown occurs, correct the mixed airflow direction.
1
Take the fan module out of the shipping box.
2
Slide the module into the bay.
Figure 21. PSU and fan installation
•
Power supply unit on the right
•
Fan unit on the left
Fan module replacement
1
Slide the fan module out of the bay.
2
Slide the replacement module into the bay.
Fan air filter replacement
Environmental factors can decrease the amount of time required between air filter replacements. Check the environmental factors regularly.
An increase in temperature and/or particulate matter in the air might affect performance.
CAUTION:
Check the fan air filters at six-month intervals and replace them as necessary. To accurately determine air filter
replacement intervals, regularly monitor the speeds of the cooling fans. An increase in overall fan speed may indicate a clogged
filter.
You must replace the fan air filters with new filters; you cannot clean and reuse the old fan air filters. Replacement filter media must meet
the requirements found in GR-63-CORE.
•
Minimum dust arrestance of 65%, per ASHRAE Standard 52.1-1992. OR
•
Minimum Efficiency Rating Value (MERV) of 2, per ANSI/ASHRAE Standard 52.2-2007.
CAUTION:
For Network Equipment Building Systems (NEBS) compliance, use NEBS approved
filters.
Use fan air filters with reverse blue-banded air flow systems—PSUs and fans. You can replace the air filters individually on each fan within
the system without powering down a PSU module or disrupting traffic.
32
Fans
