AIR COMPRESSOR PRESSURE SWITCH HOW TO
AIR COMPRESSOR PRESSURE SWITCH MANUAL

You are quite correct to be intimidated by the compressor. Yes, you can adjust the cut-in and cut-out pressure level yourself, but I think that with your switch you will be trying to adjust it in vain. I suspect that your pressure switch has failed in the high-pressure cut-out setting. Thank you for visiting this site and for writing in. Hello Terryl, very nice to hear from Tupelo. Any help you can give me would be greatly appreciated. This seems a little more manageable to me, I just don’t know how or if you can. I would like to cut the pressure down to 175 or so. It has reached 200PSI, but it won’t cut off. Everything seems to run just fine except it hasn’t cut off on its own. I have a DeWalt D55168, 200 PSI 1.8 HP 15 Gallon tank I picked up and used the other day. I want to adjust the pressure switch down.

AIR COMPRESSOR PRESSURE SWITCH HOW TO

How to adjust the compressor pressure switch down? Question That is assuming that your pressure switch is accessible, and has those two springs I spoke of since you don’t mention the make or model of your air compressor. If you must change your pressure settings, and I generally advise against it, as they are factory set for good reason, then one of the two threaded shafts with the nuts pushing down on springs inside your compressor pressure switch will adjust the cut in and the other will adjust the compressor cut out pressure levels. Regardless of the pressure in the compressor tank then your air tools would then only see that 50 PSI, would use less air because of the lower pressure setting, and thus would reduce the frequency of compressor cut in. Wouldn’t the same thing be accomplished by turning your regulator down to 50 PSI? I’m puzzled as to why you feel the need to reduce the cut in pressure to 50 PSI? It also controls the compressor cut-out pressure level too. How do I adjust the cut-in pressure on my compressor using the air compressor pressure switch? ResponseĮd, the thing that controls the air compressor cut-in pressure is the pressure switch. I want it to drop to 50 lbs before it kicks on. when it drops to 90 lbs it kicks back on. Reader Comments & Responses How do I adjust the air compressor cut-in pressure? Question Response Visit our Air Compressor Pressure Switch Troubleshooting & Buying Guide for information on faulty pressure switches. Turning it anti-clockwise will simultaneously decrease them both. Instead of adjusting the cut-in and cut-out pressures individually, you simply turn this screw clockwise to simultaneously increase both the cut-in and cut-out pressure. In fixed differential pressure switches, you will have a single screw threaded with a spring. Most pressure switches are factory set at a cut-in pressure of around 80 PSI or 95 psi, with pressure differentials of 20 PSI & 30 PSI, making the cut-out pressures 100 PSI and 125 PSI.

AIR COMPRESSOR PRESSURE SWITCH MANUAL

Don’t turn any of the screws when you get your new pressure switch, always check your manual to be sure you’re doing the right adjustments. Some pressure switches can only be adjusted when under pressure.

This procedure may vary depending on your air compressor pressure switch type. Run your compressor until it reaches the cut-out pressure and ensures it is doing so successfully. You should maintain a pressure differential of at least 20 PSI between the cut-in and cut-out pressures. Turn the pressure screw clockwise if you want a higher maximum pressure or anti-clockwise for lower maximum pressure. Now follow the same procedure to set the cut-out pressure, adjusting the differential pressure set screw. If you want to tweak it further, unplug and drain the air compressor first to avoid electric shock. Check that your new cut-in pressure is working. ĭrain out the release pressure in your compressor using the drain valve and then plug the compressor and run it. Turning the screw clockwise will increase the pressure (kick in sooner) and turning it anti-clockwise will decrease the pressure (kick in later). This will tend to be the screw closest to the manual or the big set screw. How do I adjust the pressure switch on my air compressor?įirst of all, unplug your compressor and open the cover of your pressure switch.īegin with setting the cut-in pressure first.

Air compressor pressure switch