AEC VacTrac Series Conveying Systems - Manual (Page 89)

VacTrac™ Series Conveying Systems Page 89
Mechanical Components WH2-605A.4
Important!
When re-installing ACA Series filter bags,
make sure that the bag is turned inside out,
with the glazed surface facing outward.
8. Carefully slip the bag over the bag cage. Position the filter
bag all the way onto the bag cage, and place a clamp
around the bag near the top of the bag rack plate. Tighten
the clamp.
Improperly installed clamps cause a poor dust seal.
Note: Dusting in the clean air exhaust is a normal condition after
installing new filter bags, and should stop after the first
several hours of operation.
9. Replace the upper tank section, with the gasket properly
seated between upper and lower sections. Make sure the
filter bags are hanging straight down and that the bags do
not touch each other or the inside walls of the filter
chamber. This action prevents excessive bag wear when
compressed air pulses enter the bags.
10. Replace and tighten the stretch clamp.
Dealing with Shortened ACA Series Filter Bag Life
If ACA filter bags wear our rapidly, refer to the following list to
diagnose certain difficulties:
Chemical Attack
Filter bag material may degrade from certain chemicals in the dust
of the air stream.
Moisture
Filter bag material may shrink or degrade from excessive moisture
in the filter chamber.
Abrasion
If filter bags are improperly installed, bags can rub together or
against filter chamber walls, resulting in excessive wear. Abrasion
on the filter bags near the air inlet area indicates that a dust-
impingement baffle may be required.