FAN FILTER UNIT - HIGH EFFICIENCY
INSTALLATION & SERVICE INSTRUCTIONS
Technical Note: Static Pressure Ports
Room Side Replaceable (RSR) Port
Sample line string below:
FFU-HE/24/48/
RSR
/BC/ECM/115/10//CT//HEPA//ECMDX//WK/DSW/PC/TMB/ATS/ML/FL/WPF/PL-AL/F-AL/PL-B12/F-B12
STEP 1:
Remove diffuser perforated face by turning quarter turn fasteners holding face in place.
NOTE:
Safety cables will be attached to the diffuser face, but care should be taken to ensure that diffuser face does not swing and
injure anyone.
Step 2:
Remove gasketed bolt
STEP 3:
Insert pressure measuring gauge (eg. Magnehelic) to read pressure drop across filter. Hole size is 5/16”.
NOTE:
Static Pressure Port can also be used as a test port for sample aerosol concentrations upstream of the filter.
Remove Diffuser Face with Quarter Turn Fasteners
Static Pressure Port
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