MAC 10
®
IQ
Fan Filter Unit
15
Innovators in Clean Air Technology | www.envirco.com | Operation & Maintenance
I n s t a l l a t i o n & S e r v i c e M a n u a l
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Service: Removal and Replacement of Standard 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 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.
WARNING
DISCONNECT THE UNIT FROM THE ELECTRICAL
POWER SOURCE BEFORE ATTEMPTING
ANY SERVICE
WARNING
THE STANDARD FILTER IS PROTECTED WITH AN
EXPANDED METAL FACE SCREEN. 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.
Standard Filter Change
On/Off Switch
Lid Assembly
#8 Screws (10x)
Ø5/32 Rivet (6x)
Filter Deflector
HEPA/ULPA Filter
Electrical Knock Out