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SVL-A, SVL-B, SVL-C, & SVL-D Self-Contained Material Loaders - Venturi Style 23 of 49
Chapter 4: Setup
4-1 Preparations
Check to see if the venturi assembly is inserted in the material to be
conveyed.
Verify compressed air connections are properly installed.
Switch the compressed air supply ON at the compressed air source.
Check pressure of air supply at the control assembly.
Make sure unit and control are properly grounded.
Switch the conveyor unit electrical switch ON at the control and maintenance
unit.
The material loader should now convey until the conveyor hopper is filled up to
the level sensor.
4-2 Adjusting Compressed Air Flow
The SVL is equipped with a compressed air filter/regulator that will determine the
amount of air that flows to the venturi at the material source. This air flow will
determine how much material will be transferred and how fast your process will
be replenished with material, with each loading sequence.
Adjusting the air setting: It is best to adjust the air setting to its lowest possible
level in order to conserve compressed air energy.
Parameters such as distance, the number of material line bends, the flow
characteristics of the material and vertical rises in the flex hose all play a part in
finding the proper setting. Ultimately, trial and error settings over several loading
sequences will work best to determine the right air level. Too low of a setting
may not move material effectively enough to satisfy demands cycle after cycle.
Too much air will waste energy and cause the filter on the SVL to prematurely
blind in an attempt to evacuate excess air. Refer to the gauge on the regulator
and adjust the air to the lowest possible setting that assures reliable material
transfer.
Note: Unit requires 25 SCFM at 80 PSIG (5-6 bar) if continuously run. Typical air
consumption is 8-10 SCFM @ 80 PSIG.
Adjusting air settings for ratio units: Ratio units have two controls and
compressed air settings to consider. Usually one is dedicated to virgin material
and the other, regrind material. Both material paths terminate into the “Y” tube at
the SVL loader inlet so care must be taken to adjust in consideration of the other.
SVL-C (Two Inlet) Operation. If the goal of your system is to evacuate a
granulator of regrind in the most effective manner, the regulator should be