AEC VacTrac Series Conveying Systems - Manual (Page 81)

VacTrac™ Series Conveying Systems Page 81
Mechanical Components WH2-605A.4
Note: To change motor rotation:
• Disconnect power at the external disconnect.
• Switch any two incoming power leads on the main
power supply.
; Make sure that filter chamber housings have no leaks; check
stretcher clamps for tightness.
4-4 ACA Series Filter Chamber Operation
ACA Series Filter Chamber Pre-Operation Checklist
Check the following before you operate ACA Series filter
chambers:
; Make sure all mechanical installations are complete.
; Make sure all electrical and compressed air connections are
complete and correct.
; Make sure that no leaks are present in the filter chamber
housing. Check stretcher clamps for tightness.
Adjusting Time Between Air Pulses
Models 91/93, 151/153, and 251/253
The time between cleaning air pulses requires adjusting to match
up with dusting characteristics of the material being conveyed. If
more dusting occurs, then more frequent compressed air pulses are
required to clean filter bags.
Locate the off-time control potentiometer inside the control
enclosure and adjust from 0- to 30-second intervals between air
pulses to match material conveying characteristics.
Adjusting Air Pulse Duration: All Models
Locate the on-time potentiometer inside the control enclosure on
the circuit board. With the unit operating, turn the potentiometer
counterclockwise to shorten the air pulse duration; turn clockwise
to lengthen the air pulse.