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Conveying System Mechanical Components Chapter 3: Installation 78 of 138
Starting ACA Series Filter Chamber Units
With all adjustments complete, turn on clean, dry, oil-free compressed air and regulate to 60
psi to 80 psi (414 kPa to 552 kPa). Turn the power on/off switch to ON; the unit then
automatically self-cleans the filter bags. An indicator light on the control box for Model
91/93, 151/153, and 251/253 ACA filter chambers illuminates each time a compressed air
pulse is directed into a filter bag.
Note: If for any reason the power is turned off, wait at least three (3) seconds to reset
.
During initial startup, you’ll note some dusting occurring at the clean air
exhaust. This condition is normal with new filter bags until the exterior
surfaces of the bags become evenly coated with dust particles, which prevents
fine material from passing through the filter bag pores. This dusting condition
should stop after the first several hours of operation.
Adjusting Proximity Sensor Sensitivity
Models Equipped with Volume-Fill Switch Only
A proximity switch mounted in VF, SSR and SSR vacuum receivers detects when the
vacuum receiver has been filled during a conveying sequence, telling the conveying system
control to move on to the next on-line vacuum receiver in the sequence. This speeds the
conveying cycle and shuts the pump down promptly to conserve electricity if all the bins
being loaded are full.
The sensitivity of the vacuum receiver material level sensor can be adjusted. The factory
setting is correct for most applications. The sensor is mounted through the wall of the vacuum
receiver.
Note: The adjusting potentiometer is located beneath a plastic cover screw near the
sensor LED indicator. Remove the protective cover screw before making
adjustments and replace it when finished.
Note: Before adjusting the Receiver-Full sensor, make sure that the Bin Full sensor
is in the closed position.
When adjusting, fill a vacuum hopper to see if the switch detects your material. The LED on
the switch goes out when it detects material.
• For increased sensitivity, turn the potentiometer clockwise.
• For decreased sensitivity, turn the potentiometer counterclockwise.
• Consult proximity switch instructions if necessary or call Service Department.