Sterling 882.00379.00 User Manual

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Conveying System Mechanical Components    Chapter 3: Installation 
54 of 138 
Note:  Use of a system without an approved filter system                                       
installed on the vacuum air inlet voids the blower warranty! 
Installing the Filter Chamber Shroud 
The cloth filter shroud is mounted to a ring on the underside of the filter chamber stand. It 
reduces housekeeping duties around the filter chamber by preventing dust from becoming 
airborne when the dust and fines are discharged from the SFC filter chamber. The dust 
container below the shroud is customer-supplied—the standard 24” (61 cm) clearance stand 
is designed for use with a 5-gallon (19-liter) pail, and the optional 38” (96 cm) clearance 
stand is designed for use with a 55-gallon (208-liter) drum. 
1.  Insert the filter shroud support wire into the slotted hole in the middle of the cloth 
filter shroud. Use supplied hardware to secure. 
2.  Slip the filter shroud over the retaining ring located on the bottom side of the filter 
stand mounting plate. Secure it with the worm clamp provided. 
3.  Place the dust container you’ve supplied below the filter chamber stand and insert the 
filter shroud. 
4.  On standard 5-gallon (19-liter) pails, the filter shroud should be trimmed and fastened 
to the top lip of the can with a band clamp. Don’t trim the filter shroud on 55-gallon 
(208-liter) drums. Secure the drawstring on the shroud around the drum, making sure 
the open end of the shroud hangs freely inside the drum. 
5.  Make sure the operation of the counterweighted flapper dump valve is not obstructed 
in any way by the filter shroud.  See Figure 21 on page 47 for a typical example of a 
filter chamber shroud. 
Caution! 
Do not obstruct the filter shroud in any way.  Empty the dust container 
before the dust level obstructs the end of the filter shroud.                     
Failure to observe these directives may result in reduced filtering efficiency 
and contaminants entering the conveying system.
 
Installing ACA Series Filter Chambers 
Powders or granular materials with fines can cling to filters and contaminate operating 
components. The ACA Series filter chamber is a self-cleaning filtration unit that enables such 
materials to be conveyed. 
During material conveying, fines accumulate on the outside of the filter media as the air 
passes through a filter bag. These fines must be periodically removed to prevent performance 
losses in the conveying system. The ACA Series filter utilizes a plant-based compressed air 
supply to clean filter bags with intermittent air pulses. 
At preset time intervals, a solenoid valve activates, interrupting continuous compressed air 
flow to the unit. This interruption causes an exhaust valve to open, allowing stored 
compressed air from an accumulator to be released down inside the filter bag. This 
momentary burst of air stops the flow of dust-laden air through the filter bag and flexes the 
filter fabric.  This, along with the reverse flow of air, causes the accumulated dust to fall off 
the bag and back into the hopper for discharge. 
This instantaneous cleaning action of air pulses are directed to each individual filter bag in 
sequence and at a specified duration. You can adjust the time between air pulses; different 
conveying rates and materials require different air pulse times. Air pulses must occur more