PresAir

Adjustable Pressure and Vacuum Switches How To

How To Adjust Your Pressure or Vacuum Switch

 

Many of Presair’s pressure and vacuum switches are field adjustable. This allows you to adjust the point of actuation to the exact vacuum or pressure setting you require for your application. It can be done on the fly wherever the adjustable switch is placed. Notice – the direction you adjust the set screw is opposite for the below models. Follow these instructions for adjusting your pressure or vacuum switch:

WARNING! Do not tighten the screw too far in clockwise. Going beyond the limits may prevent switch operation.

Adjustable Pressure and Vacuum Switch

Your adjustable pressure or vacuum switch comes preset at the low end of the desired pressure or vacuum range. To adjust your switch’s actuation point, follow these simple instructions:

  • Insert a small hex driver into the screw pictured.
  • Tighten or loosen the screw until you reach the desired set point. Tighten clockwise to switch at a higher pressure; loosen counter-clockwise to switch at lower pressure.

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Adjustable Sensitive Differential Switch

Your adjustable differential switch comes preset at the middle of its pressure range. To adjust the switch’s actuation point, follow these instructions:

  • Insert a small hex driver into the screw pictured.
  • Tighten or loosen the screw until you reach the desired set point. Tighten clockwise to switch at a lower pressure; loosen counter-clockwise to switch at higher pressure.

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For more information, view our product pages. As always, our support team is ready to help! Contact us with any questions or concerns regarding your switch!
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