27
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.
dust re-entrainment. Re-entrainment will decrease collector efficiency, reduce bag
life, and result in increased operating pressure.
12
MAINTENANCE
12.1
Record Keeping
It is suggested that a record is kept of operational data and that all servicing
maintenance is recorded.
Operational data to be recorded could include measurements taken of the air
flow rate and the pressure differential across the bags. This should be recorded
weekly or monthly. This record can assist with maintenance schedules and show
collector variances due to operations.
Maintenance data to be recorded should include details of inspections and
any parts replaced.
12.2
Initial Weekly Maintenance
Record the collector differential pressure daily for at least the first 30 days of
operation. Adverse operating conditions can be detected by a change in differential
pressure. The dust collector controller will give a digital read-out of the differential
pressure. This gauge will provide differential pressure reading across the dust cake
and fabric. After start-up, the differential pressure will gradually rise to its normal
operating level which will be about 3” to 4” w.g.
Any faulty or worn tubes must be replaced to prevent damage to the
collector. The compressed air line regulator, dryer and filter should be checked for
proper operation.
The filter cleaning cycle is automatically controlled from the pulse controller
with either the differential pressure set points or the timed interval used to
maintain a steady pressure differential across the filter.
Do not be alarmed if cleaning pulses cause momentary spikes in the
differential pressure readings.
NOTE: The time interval between pulses is factory pre-set at 30 seconds. It
may be changed and is dependent on the application. Effective cleaning is
reliant upon pulse frequency, duration and pulse compressed air pressure.
The pulse duration is pre-set at 100 milliseconds. DO NOT change the
factory setting without contacting an AAF International representative.
