Since I am not using air lockers or the cool ARB lighted toggle switch I used no other connections - isolated them with electrical tape and wrapped them with tape to harness.Įdit - after rereading above I see that you are using a lighted switch and provides a great schematic for that setup. If your setup is similar to mine the thin red wire is the important one to wire to your switch that provides +12v. You can connect your air hose to get a longer run time before pressure switch trips. If you do the same without connecting thin red to +12v the compressor should not run. Should run compressor until pressure switch kicks in and stops it. Temporarily - run reds mentioned to positive battery, run blacks mentioned to negative battery. Wire up compressor and pressure switch to connectors per instructions. On the opposite end of the main cable the thin red wire goes to your switch that provides +12vĮasy to test. High pressure cutoff leads to pressure switch mounted to compressor - does not matter what connector each is connected to. Thick black and thick red to battery, thin black to battery - per instructions.Ĭompressor power cable/fitting to compressor power fitting. Ideally, you should get the correctly sized compressor for the job.Īs always, check the air compressor manufacturers label for the recommended PSI.Wired ARB single to Voswitch switchbox a couple days ago - no air lockers, just compressor functionality for airing upĭid not need secondary wiring harness so it’s in the box (the one that would run into the switches in the cab) While most tanks are designed to withstand excess pressure, many of them have had water in them for several seasons and are rusted and weakened, making the risk of explosion much higher. If it causes a rupture of the storage tank, the results can be deadly. It can be very dangerous to increase the pressure output of your pump. Also, be aware that by creating this “artificial demand”, you are going to increase your consumption costs and run the risk of destroying the compressor pump.īefore adjusting your pressure switch, check to make sure your regulator is adjusted properly. However, you need to be careful not to exceed your equipment’s safety ratings. Maybe you are doing a lot of work with hardwoods or you are working on a project that needs more torque.ĭialing up the pressure switch can help you “cheat” that little extra power from your compressor. Increasing the settings can allow you to get more pressure from your existing machine. Can you turn up the pressure on your compressor? Risks and Dangers This can be handy if you have an oversized compressor and are using it for a job that doesn’t need the added pressure. If you don’t need as much pressure, dialing the switch back can make your compressor more efficient, reducing costs and maintenance. If the pressure builds to a dangerous level, unplug your compressor immediately.īack to Top ▲ Why would you lower the pressure?Įfficiency also comes into play.

Maintain a minimum of 20-PSI pressure range between cut-in and cut-out.Ĭaution: It is possible to set the cut-out pressure so high that the compressor doesn’t turn off, and runs until the safety valve engages, the motor burns up, or the tank ruptures. Adjustment is the same: unplug the compressor and turn the set screw one rotation inward to get a higher pressure level and is turned counter-clockwise to get a lower pressure level. Ideally, the cutout pressure point is set about 20-40 psi higher than the cut-in pressure. If you need to make further adjustments, unplug the compressor before doing so to avoid electrical shock.Ĥ. Plug-in the compressor, and, if there is air in the tank, you can use the drain valve to release pressure (or simply attach a blowgun to your compressor and bleed off air) to observe the new cut-in pressures. Turning it counter-clockwise causes it to cut in sooner - at a lower pressure.ģ. Dialing it in causes the compressor to kick in later - at a higher pressure. In most cases, I find the cut-in pressure screw to be closest to the compressor motor. Before setting the cutout pressure point, you need to-first-set the cut-in pressure point.

Make sure you have unplugged the air compressor, and remove the cover off the pressure switch.Ģ. Steps To Adjusting The Air Compressor Pressure Switch:ġ.

Air compressor on off switch