Hog Slat Inc. Newton Grove, NC USA August 2019 REV A6 2 Ventilation Systems Operation: The High and Low limit pointers are used to visibly create the desired operating range. When actual pressure drops below the Low limit or exceeds the High limit, onboard relays are activated to either open or close vents. Pressure reading drops below this limit, the vent machine CLOSES vents to raise the pressure inside. Area between limit pointers, no adjustments are made Pressure reading exceeds this limit, the vent machine OPENS vents to lower the pressure inside. Low Pressure setting adjustment knob. Clockwise to raise limit, Counter clockwise to lower limit High Pressure setting adjustment knob. Clockwise to raise limit, Counter clockwise to lower limit Manual OPEN /CLOSE AUTO/MANUAL Selection
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