Not all switches are as easy to adjust as our 400 Series pressure switch which features an easily accessible adjusting knob, or the 800 series which has a user-friendly push button display. Be careful not to use your fingernails when pushing the buttons as you may puncture the pads.

Our 300, 200 & 100 series switches have the adjusting screw in the center of the head which use a 2 mm Allen wrench.

The adjusting screw can quickly be accessed by simply lifting the rubber cover in the center of the terminal pins.

The 300 series with integral pin or cable requires the unit to be open to access the plastic adjusting screw. Be sure not to strip the screw head by over-tightening.

Or, if you have the DIN EN 175301-803 Form A electrical connection, you will first need to remove the plastic head before accessing the adjusting screw.

Insert your 2 mm Allen wrench into the adjusting screw and make clockwise rotations to increase the switch point & counterclockwise to decrease the switch point. Be careful as you make adjustments, a little adjustment can result in wide range change.

After making the adjustment, you will check the switch under pressure to determine how far the switch point has moved. Continue to make small adjustments until the desired switch point is reached.

Please keep in mind that a mechanical switch not only has a switch point, but also a direction. That needs to be considered when checking the switch point adjustments.

Contact NOSHOK Customer Support or your NOSHOK Regional Sales Manager for additional assistance.