30
1.877.877.2269
BLACKBOX.COM
NEED HELP?
LEAVE THE TECH TO US
LIVE 24/7
TECHNICAL
SUPPORT
1.877.877.2269
CHAPTER 7: FANS
FIGURE 7-2. PSU AND FAN INSTALLATION
NOTE: In the figure above, the power supply is on the right side and the fan unit is on the left.
7.3 FAN MODULE REPLACEMENT
CAUTION: Complete steps 1 and 2 within one minute or the switch powers down.
1. Slide the fan module out of the bay.
2. Slide the replacement module into the bay.
7.4 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.
The fan air filter media slides into the frame from the top. No tools are required.
1. Determine which filters to replace.
2. Unlatch and remove the first module that needs the filter replaced.
3. Slide the existing filter upwards to remove it from the module.
4. Replace the filter with a new filter of the same size.
5. Repeat for the remaining modules that need the filter replaced.
