This process continues until the air compressor is in use. Again, the motor starts once the contacts close. Because of the air used for the process, the pressure drops to a specified level. Simultaneously, back pressure escapes out through the pressure relief valve. As a result, a pressure system is reached in the device.ĭue to this pressure set, a diaphragm inside stops the motor by breaking the circuit. Due to this action, the motor starts, and at the same time, the compressor is pressurized. Once the air compressor is plugged in, the person in charge can move the level to auto position. However, the basic operation of switches remains the same for all devices. There are different air pressure switches available, and each one differs in working features. This valve helps the machine for easier starting without any hassle by relieving head and line pressure. The air compressors’ pressure switch has a pressure switch relief valve. The air pressure circuit mechanism of the device sends power to the motor to function. Ideally, you should get the correctly sized compressor for the job.Īs always, check the air compressor manufacturers label for the recommended PSI.An air pressure switch is a mechanical device that depends on pressure for controlling the electric air compressor’s operation process. 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. Milton® 1/4' NPT Lever-Style Blow Gun and 2. Heavy-Duty Digital Tire Inflator and Air Pressure Gauge, Euro Chuck, 1/4' NPT, 15' Rubber Hose, 0-255 PSI. Ideally, the cutout pressure point is set about 20-40 psi higher than the cut-in pressure. This universal pressure switch replaces pressure switches on compressors with up to 2 HPat120v 1 phase, 3 HP at240 V 1 phase or 5 HP at240 V 3 phase. 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.
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