Sterling 882.00379.00 Benutzerhandbuch

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Conveying System Mechanical Components    Chapter 3: Installation 
57 of 138 
 
3-3  Compressed Air Blowback Connection 
To provide proper filter element cleaning, the compressed air supply must be regulated to 80 
PSI (5.5 bars). Low air pressure will cause poor filter element cleaning. Air consumption 
depends on the frequency and length of cleaning air pulses into the filter element.  
Connect a minimum of 3/8” (9 mm) air line to the top of the solenoid valve air block. 
Compressed air must be clean, dry, and free of oil. A filter regulator and shut-off are 
recommended components of your in-plant air supply. In-line filters can handle small 
amounts of moisture; in-line desiccant filters or packed beds of granular absorbing polymer 
can remove oil mist and condensed oil. 
You may need to install an accumulator in your air supply system to enhance blowback 
effectiveness if your system cannot consistently meet these requirements. Make sure you 
use full-sized 3/8” or larger diameter pipe or tubing when making the connection.  
3-4   Implosion Blowback Connection 
The clearing valve (implosion blowback valve) is located on the outlet of the vacuum 
filter.
 Connect the clearing valve to a 60-80 PSI (4.1-5.5 Bar) compressed air supply. 
Compressed air must be clean, dry and free of oil.  
Run a 3/8” (9 mm) branch line to supply the vacuum hoppers in your system. Install a 3/8” 
(9 mm) x 1/8” (3 mm) tee valve in the up position near the filter chamber.  
Connect shop compressed air to port number 3 on the clearing valve solenoid with 1/4” 
(approx. 6 mm) poly tubing. Connect port number 2 to the clearing valve. Port 1 is to be 
exhausted to the atmosphere. (See Figure 29 below). 
The 3/8” (9 mm) branch supply line should include a shut-off valve for on/off control, an air 
filter/pressure regulator with a gauge for pressure control, and mini-lubricators located at 
each vacuum receiver. Install a quick-disconnect fitting or a shut-off valve in the 
compressed air piping leading to the vacuum receiver’s clearing valve to speed receiver 
cover removal for cleanout or service. 
 
Figure 29: Clearing Valve Compressed Air Connections  
Port 3: Shop Air In 
Port 1: Exhaust 
Port 2: (common) 
Attach to Clearing 
Valve