Air Pressure Switch Adjustment

This video gives an explanation on how to adjust an air compressor pressure switch as well as basic wiring instructions.

Air pressure switch adjustment.

Pull the release valve located directly below the pressure switch to release pressure and turn the compressor motor on. The pressure switch cover is a. Turn the differential nut counterclockwise to lower cut off pressure or turn the nut clockwise to raise cut off pressure. Square d pressure switch.

Adjusting the differential will only adjust the cut off pressure. Starting from an empty tank. Remove the air compressor s pressure switch cover. How to adjust a pressure switch on an air compressor step 1.

Steps to adjusting the air compressor pressure switch. Compressor pressure switch adjustment. Before setting the cutout pressure point you need to first set the cut in pressure point. Setting the cut in pressure.

Watch how the pressure slowly comes down. You may still need to try to adjust the setting on a new pressure switch to match the old pressure switch settings. Set the cut in pressure first before adjusting the cut out pressure. An option is to use a normally open switch and drive a relay connected to the air pump using the relay s normally closed output.

To make a compressor pressure switch adjustment you will need to remove the cover from your pressure switch. Open a drain to slowly let some air escape. Although a pressure switch comes in different designs and models there is a uniform approach to adjusting it. Setting the cut out pressure.

Adjustment will vary depending on t. Expose the pressure switch. Determine the cut out pressure setting. Start the compressor and let it run until it reaches the cut out pressure.

When the desired pressure is reached the actuator is depressed and the switch opens. Step 4 reinstall the black plastic cover and insert the mounting screw into the hole. Make note of the pressure when the switch pops up and adjust the bolt as needed to get the desired pressure. Steps in setting the cut in pressure.

First check if the tank is empty. This is the cut in. Shut off the power to the compressor. Plug in the air compressor and turn the on off switch to the on or.

Wait until the compressor starts. Low water pressure cutout switch square d m4 pressure switch w low pressure cut off. In most cases i find the. Make sure you have unplugged the air compressor and remove the cover off the pressure switch.