33
FabriPulse
®
M
©
2015 American Air Filter Company, Inc. Any use of the text or
images this document contains, without permission of American Air
Filter Company, Inc., is prohibited. FabriPulse, AAF, REDClean,
REDFiltration, and Reliable Efficient Durable are registered
trademarks of American Air Filter Company, Inc. d/b/a AAF
International.
12.7
Accessories
AAF accessories should be inspected for wear or damage on the same
interval as the bags.
Any accessory equipment should follow the maintenance schedule that is
included in the manufacturer’s IOM.
13
TROUBLESHOOTING
13.1
High Differential Pressure Reading
Improper Control Operation
Check the wiring, fuses, and setting of pulse duration and interval. DO NOT
ADJUST THE PULSE DURATION WITHOUT CONSULTING AN AAF
REPRESENTATIVE.
Insufficient Compressed Air
Check the air supply to be sure the compressor is providing 80 to 100 psig.
Check for a plugged filter in the compressed air line.
Solenoid pilot valve malfunction
Listen to be sure the solenoids are firing. Check for momentary air venting
each time it fires. Clean or replace if necessary.
Leaky Dust Discharge Device
A leaking rotary lock, screw conveyor, slide gate, barrel top adaptor etc. can
overload a collector by preventing dust discharge. This will cause high
differential pressure, excessive bag wear and reduced air volume.
Condensation
High humidity will create blinded bags which results in excessive differential
pressure. Run the cleaning mechanism with the fan off and program timer
on to release the dust cake. If condensation is a recurring problem, pre-
processing warm-up and post-processing purge periods of 15 to 30 minutes
each may help. Exterior insulation may also be necessary. Sources of
moisture may come from leaky process ductwork, moisture in the process
gas stream, or moisture in the compressed air system.
