PresAir

How To Adjust Vacuum Switches

How To Adjust Your Vacuum Switch

Many of Presair’s vacuum switches are field adjustable. This allows you to adjust the point of actuation to the exact vacuum 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 vacuum switch:

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

Adjustable Vacuum Switch

Your adjustable vacuum switch comes preset at the low end of the desired 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 increase vacuum; loosen counter-clockwise to decrease vacuum.

How To Adjust Vacuum

 

Adjustable Sensitive Differential Switch

Your adjustable differential switch comes preset at the middle of its vacuum 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 decrease vacuum; loosen counter-clockwise to switch at increase vacuum.

How to Adjust Sensitive Pressure Switches

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!

Contact us about adjustable pressure switches.

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