AEC VacTrac Series Conveying Systems - Manual (Page 88)

Page 88 VacTrac™ Series Conveying Systems
WH2-605A.4 Mechanical Components
Inspecting ACA Series Filter Chamber Filter Bags
Schedule regular filter bag inspections to maintain the operational
efficiency of the filter chamber. Make sure that schedules coincide
with materials that are being conveyed. Dusty materials require
more frequent filter bag examinations.
1. Turn off compressed air and disconnect the electrical power
supply.
2. Remove the stretcher clamp just below the externally
mounted solenoid valves.
Be careful to avoid damaging the gasket between tank
sections.
3. Lift off the upper tank section with accumulator,
blowpipes, and filter bag rack.
4. Inspect the filter bags for dust caking, dampness, or oil
deposits.
Any or all of these symptoms are indications of moisture or
condensed oil in the compressed air supply.
5. Check compressed air supply in-line filters and clean or
replace as needed.
If moisture is condensing inside the filter chamber, you
may need to insulate the chamber and the piping leading to
the filter. This action should keep the surface moisture
above the dew point and prevent condensation on filter
bags.
6. Do not attempt to wash or reuse soiled ACA filter bags. If
they are clogged, replace them with new filter bags.
Contact the AEC Parts Department for more information on
replacement filter bags.
7. Inspect the filter bags for wear.
Thinning bags may not stop fine dust when flexed with
compressed air, or dust can escape into the clean air tank
section and contaminate conveying air. Replace with new
filter bags as needed.