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IOM - FFDE
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IOM
FFDE / FFDER / FFDERA
Service: Removal and Replacement of FFDE HEPA/ULPA Filters
WARNING
DISCONNECT THE UNIT FROM THE ELECTRICAL
POWER SOURCE BEFORE ATTEMPTING
ANY SERVICE
WARNING
THE STANDARD FILTER IS PROTECTED WITH AN
EXTENDED METAL FACE SCEEN. THIS IS NEVER TO
BE USED TO HANDLE THE FILTER. IT IS ONLY FOR
PROTECTION AGAINST AN ACCIDENTAL TOUCH OF THE
FILTER. ONLY HANDLE THE FILTER BY THE FRAME
Note: All filters should be visually inspected for freight damage before
installation. It is necessary to use two workers when removing the filter
and for installation to avoid twisting or separation of the media seals.
Handle the filter only by the frame and never place anything on the
upstream filter side of the filter. Additionally, it is important to keep the
filter level to prevent any shearing force on the media itself.
FOR STANDARD FILTERS:
Tools Required: Phillips Head Driver, Battery Operated Drill with 5/32 drill
bit, Rivet Hand Tool, Ø5/32 aluminum rivet grip range.126-.187
Step 1. Remove unit from ceiling.
Step 2. Remove the 10 screws holding the HEPA/ULPA filter to the
lid assembly.
Step 3. Lift the lid assembly off the HEPA/ULPA filter (see figure). Remove
filter deflectors using 5/32 drill bit. Keep filter deflectors to install in
new filter. Discard the used filter as per requirements of the applicable
regulations. Carefully install the filter deflectors into the new filter using
the 5/32 rivets. Do not touch or place the filter deflectors on the HEPA/
ULPA media pack. This could cause tears in the filter pack.
Step 4. Before replacing with the new filter, carefully inspect the new
filter for any visible damage. Also inspect the gasket and the T-Bar to
insure a tight seal. Replace if necessary.
Step 5. To replace a filter, raise the filter and rotate into position in
the ceiling grid (with power off), then lower the plenum housing into
place. Reconnect wiring and hardware from previous steps that have
been removed.
Step 6. Restore power and verify proper operation of FFU.
Standard Filter Change
On/Off Switch
Lid Assembly
#8 Screws (10x)
Ø5/32 Rivet (6x)
HEPA/ULPA Filter
Filter Deflector
Electrical Knock Out
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