KRUEGER CRFF-E, Установка, эксплуатация и обслуживание

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Installation, Operation, & Maintenance for CRFF-E Series
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Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com
Removal and Installation of the Access Room Side Gel Seal Filter –
Extruded Aluminum Housing (CRFF-E-ARS Type Units)
Disconnect the unit from the electrical power source before attempting any service.
The ARS 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, 3/16” hex head ball driver (2ea)
Manpower Required: 2
1. With the power off, remove the diffuser screen by removing the 6 each 10-32x1/2 screws, then carefully place in
a safe location.
2. Loosen the six 1/4x12 socket head screws far enough to rotate the eight filter clips 90°. The filter may be loose
enough to drop during this operation. If not, slowly pull the filter away from the knife-edge seal, taking care not to
touch the filter face during this operation. It is important to pull the filter slowly away from the seal, so that the gel
remains in the filter gel track.
3. Carefully clean plenum assembly knife edge surface of residual gel material.
4. Inspect filter for visible damage, if damaged set aside for replacement or repair.
5. Inspect the gel seal, if reinstalling the removed filter. Determine if the gel has lost its ability to seal (i.e. the gel
should reform to cover the track without voids or openings), if so repair the gel material or consider replacement
of filter.
6. Place the filter evenly against the filter-sealing surface of the unit. Reposition filter clips and screws. The clips
should be rotated and angled into place. It is recommended that four workers work on each corner of the filter
simultaneously, holding the filter seated into the track. Hand tighten clips from opposite corners evenly until all
clamps are tightened.
7. Reinstall diffuser screen by hand-tightening the screws.
8. Determine if recertification or testing of replacement is required.
9. Restore power to FFU and verify proper operation of FFU.
!
RSR/E Sheet Metal Filter Replacement
Filter
Filter Clip
¼ -20
Cap
Screw
10-32
PHP
Screws
Knife- Edge
Seal
Gel Track
Diffuser
Screen
CRFF-E-ARS & CRFF-E-ARSM Filter Change
Fan Filter Unit
Filter
2-Piece Welded
Plenum Housing
Filter Clip and
Screw (typ 6)
Diffuser Screen
Screws (typ 6)