Price FFU series Installation And Service Manual page 18

FAN FILTER UNIT
INSTALLATION & SERVICE INSTRUCTIONS
TABLE II outlines a few possible problems that may be encountered during leakage testing. This chart is intended as a quick
troubleshooting guide, and is not exhaustive. All local and applicable codes should be followed.
TABLE II: LEAKAGE TEST OUTCOMES & POSSIBLE SOLUTIONS
Display Mode Range
Gently remove the filter, verify that the gel seal is intact and
Leakage at the perimeter of the
Improper filter installation undam- aged, and carefully reseat the filter in the knife edge
filter
frame and latch in place.
Improper handling of
Pinhole leaks detected in filter Filter may be repaired by a trained technician.
filter/damage during installation
Leakage at the perimeter of the fan Improper seal between unit and Check seal between unit and ceiling plenum and seal as
filter unit ceiling plenum required.
Isolate unit by placing cardboard or sheet metal to create
Particle Counter is beeping at Possible leakage through
vertical 'walls' extending 2ft below the ceiling plane. If filter
multiple locations, even away from adjacent lights, diffusers, and/or
passes, sealing of adjacent lights, diffusers, and/or ceiling
filter face ceiling panels
panels may be required.
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