If you set the lever to auto function, the compressor switch will turn on and off depending on the cut-in and cut-out pressure you set before. The auto/off lever is a lever or knob that toggles the air compressor switch to turn off automatically when the cut-out pressure is reached. This means that the adjustment springs play a vital role in maintaining a constant differential in your compressor. Loosening the adjustment spring makes the diaphragm require less air pressure to flex and turn the air compressor’s motor off. Tightening the adjustment springs in an air compressor switch makes the diaphragm need more pressure to turn the air compressor off. The differential is the range between the cut-in and cut-out pressure.On the other hand, cut-in pressure is the minimum pressure that activates the air compressor switch to turn on.Cut-out pressure is the highest valve that triggers the air compressor switch to break contact and turn off the motor.Let’s quickly define cut-in and cut-out pressure. The spring adjusts the cut-in and cut-out pressure in the compressor switch. It functions to relieve the pressure between the check valve and the pump. This valve is located at the base of the pressure switch.
All this happens to control the differential of the air compressor that we will discuss ahead.
#AIR COMPRESSOR ON OFF SWITCH DRIVER#
Likewise, when the diaphragm separates the contact, the driver shuts down.
The circuit is complete when the contacts touch and the driver is powered on. Contacts are made from a conductive material such as metallic strips. The contacts are two points in the air compressor switch that make or break the connection to complete or disconnect the circuit. This diaphragm’s movement up and down causes the contacts to separate and touch accordingly. The rubber membrane is pushed up or down depending on the pressure within the compressor. Every switch comprises the following components: The DiaphragmĪlso called the membrane, the diaphragm is made up of flexible material that changes according to the pressure levels inside the tanks. The compressor switch looks like a rectangular housing that contains several parts inside it that work together for the basic working of the switch. This switch can be used on a single-stage or two-stage compressor as long as the amperage is less than 26 amps on 120 volt or 240 volts, however, if this is being used with a magnetic starter on a larger compressor the amperage does not matter, in this case, it is just used to turn the starter on & off at the set pressure.Components of An Air Compressor Pressure Switch If your compressor does not have an unloader line then this valve can be left not hooked up and the pressure switch will still function properly. This valve usually has a 1/4" plastic or copper line that runs to the check valve or the head of the compressor. The unloader equipped on this switch is used to unload the air pressure off the head of the compressor when the compressor shuts off, this way when it starts there is no pressure on the piston and the compressor is able to start load free. These Ports can also be plugged if not needed which is what makes this switch a great universal replacement pressure switch. The four-port manifold gives you the option to mount in it any direction and also has the option to add a relief valve, gauge, or multiple air outlet ports. This is similar to the regular 4 port pressure switch, but this switch is equipped with heavy-duty 26 Amp contacts to provide a longer-lasting switch in demanding applications. This switch is equipped with an unloader valve, a four-port mounting manifold, and an on/off lever. The switch listed is a universal replacement pressure switch that replaces brands such as Furnas, Square-D, and more. It has the characteristics of simple operation, cost-effective, stable, and0.1 million serving cycles.Ģ6 Amp LEFOO LF10 28-175 PSI air compressor, pressure switch, control valve with a 4 port connection manifold. LF10 air compressor pressure switch control valve is an instrument that integrates mechanical pressure sensing and precise open/close in a high-pressure application.
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