CAMCORP SWF with Internally Mounted Fan - Manual (Page 22)

TROUBLESHOOTING THE DUST COLLECTOR (continued)
B. Residual Dust
If dust has gotten into the clean air plenum because of a dropped or torn bag,
hole in tube sheet, etc., the reverse air may stir up the dust and allow it to
escape into the clean air exhaust. Residual dust may also be driven down
inside the filter bags by the reverse air; if the filter bags are filled with
several inches of dust, clean both the clean air plenum and the filter bags to
avoid further problems.
V. Short Filter Bag Life
This is often a complicated problem to diagnose and we recommend calling the
factory for advice. The following list may be helpful in performing some
preliminary check:
A. Temperature
Operating Temperature above the recommended limit of the filter bag
material (220 degrees F max.)
B. Chemical Attack
Bag material degrades due to attack from certain chemicals in the dust or
gasses in the air stream.
C. High Moisture
High moisture content in the collector may cause certain filter bag material
to shrink or degrade (more rapidly at elevated temperatures).
D. Localized abrasion
Abrasion of the bags at the dusty air inlet; a dust impingement baffle may be
required.
E. Internal Bag Supports Gone Bad
Corroded, rusted or broken filter cages can cause excessive bag wear.
Stainless steel or coated cages are available.
9-4
CAMCORP, INC.
Phone: 913-831-0740 Fax: 913-831-9271