Camcorp SWF with Internally Mounted Fan Manuale Utente Scaricare il pdf (Pagina 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: 913-8

31-0740 Fax: 913-831-9271

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Camcorp SWF with Internally Mounted Fan Manuale Utente Pagina 22