Contracor ECO-100S, Instructions Manual

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Version 2.3 22
4.3.3 Media/ Air Mixture
Observe media Áow through the clear media hose. Media should Áow smoothly
and evenly through the hose. If the air exiting the nozzle pulses or if media does not Áow
smoothly, the metering valve requires adjusting. To adjust loosen the locking nut, and
adjust the metering screw until the upper holes in the metering stem are closed-off, and the
lower holes are fully open.
If pulsation occurs in the media hose, either media is damp and caked, or not enough
air is entering the media stream. While blasting, loosen the locking nut and slowly turn the
adjusting screw out (counter clockwise when viewed from the top) until the media Áows
smoothly. Tighten the locking nut to maintain the setting. If media Áow is too light, decrease
air in the mixture by turning the metering screw in (clockwise when viewed from the top)
covering more of the holes so less air enters the media hose. Tighten the locking nut to
maintain the setting.
4.3.4 Cabinet static pressure
Once the inlet is initially set per section 4.1.5, it seldom requires readjustment.
The initial setting produces approximately 50% to 75% of static pressure in the cabinet
enclosure.
If readjustment is nevertheless necessary, open the throttle valve on the dust
collector further to decrease pressure, or close the throttle valve further to increase static
pressure.
Picture 5. Metering valve adjustment
Adjusting Screw
holes fully open
holes fully closed