Fan Air Filter Replacement - Dell S4248FB-ON Installation Manual

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 switch 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 Reinsert the fan module.
6 Repeat for the remaining modules that need the filter replaced.
36 Fans