Installation, Operation and Maintenance manual
21
DFPRE 4 Dust Collectors
7. Clean sealing surfaces with a damp cloth.
Surface around opening on seal frame must be clean to ensure an airtight
cartridge seal.
8. Slide new cartridge onto suspension yoke.
Insert seal-end first.
9. Wipe clean cartridge cover seal and replace cover. Tighten wing nut securely,
by hand.
Do not use tools to tighten wing nut.
Check cover is seated and sealed properly. Seal must be compressed to
ensure it is airtight.
Damaged seals must be replaced.
10. Continue by replacing the remaining filter cartridges in the top row. Proceed to
replace filter cartridges in the next rows. Replacing filter cartridges row by row
starting at the top will help limit dusting during replacement.
11. Wipe clean contaminated air chamber access door seal.
12. Reinstall access doors.
When new filter elements are installed it is necessary to reduce the airflow through
the filter media.
This way the dust will not penetrate the media and can be cleaned off as described
above. After the elements are conditioned the slide gate can be placed back to its
original position.
Cartridge suspension yoke
Dirty Air Plenum
access door
Cartridge cover
Cartridge
Wing nut
Washer
Figure 6: Cartridge replacement
