Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | [email protected] | www.krueger-hvac.com
Installation, Operation, & Maintenance for CRFF-E Series
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Removal and Replacement of the
HEPA/ULPA Filter (CRFF-E Type Units)
Disconnect the unit from the electrical power source before attempting any service. The
standard filter is protected
with an expanded metal face screen. This is never to be used
to handle the filte
r
. It is only for protection against an accidental touch of the filte
r
. Only
handle the filter by the frame
Tools Required:
Phillips Head Driver, Battery Operated Drill with 5/32 drill bit, Rivet Hand Tool, 5/32 aluminum grip
range .126-.187
1.
Remove unit from ceiling.
2.
Remove the 10 screws holding the HEPA/ULPA filte
r
to the lid assembly.
3.
Lift the lid assembly off the HEPA/ULPA filte
r
. (See Figure 1) 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.
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.
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.
6.
Restore power and verify proper operation of CRFF-E.
!
Figure 1:
Standard Filter Change
On/Off Switch
Lid Assembly
#8 Screws
(10x)
Ø5/32 Rivet
(6x)
HEPA/ULPA
filter
Filter Deflector
Electrical Knock-Out
Summary of Contents for CRFF-E
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