Manual

INSTALLATION & OPERATION MANUAL

FFD, FFDR, FFDRA Models

Fan Filter Unit IOM

Installation & Operation

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

Service: Removal and Replacement of FFD HEPA/ULPA Filters

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