If you own an air compressor, you know how important it is to maintain the right air pressure. A pressure switch is an important component of an air compressor as it controls and regulates the air pressure inside the compressor tank. However, wiring a pressure switch can be a daunting task, especially if you don’t have any prior experience. In this article, we will show you step by step how to wire an air compressor pressure switch.
What is an air compressor pressure switch?
An air compressor pressure switch is an electrical component that automatically turns the compressor on and off based on the air pressure in the tank. The pressure switch is designed to shut off the compressor when the predetermined pressure level is reached and then turn it back on when the pressure drops below a certain level. This helps to maintain a constant air pressure level and prevent damage to the compressor.
The pressure switch is typically located on the outside of the compressor tank and has two wires connected to it – one from the power source and one to the compressor motor. The switch also has a third wire that connects to the compressor pressure gauge to give you a reading of the air pressure inside the tank.
What are the tools and materials needed?
Before you start wiring your air compressor pressure switch, you will need the following tools and materials:
| Tools | Materials |
|---|---|
| Screwdriver (Phillips and flathead) | Air compressor pressure switch |
| Wire stripper | Electrical tape |
| Wire cutter | Electrical wire |
| Wire connectors |
Step by step guide to wiring an air compressor pressure switch
Step 1: Turn off the power
Before you start wiring, make sure the power to the air compressor is turned off. This will prevent any electrical shock or injury.
Step 2: Remove the cover on the pressure switch
Use a screwdriver to remove the cover on the pressure switch.
Step 3: Identify the wires
Identify the incoming power wires and the wires going to the compressor motor. The power wires are typically black and white, and the motor wires are typically red and blue or black.
Step 4: Strip the wires
Using a wire stripper, strip about 1/2 inch of insulation from the end of each wire.
Step 5: Connect the wires to the pressure switch
Connect the black power wire to the contact on the pressure switch labeled “L1” or “Line 1.” Connect the white power wire to the contact on the pressure switch labeled “L2” or “Line 2.” Connect the red or blue motor wire to the contact on the pressure switch labeled “T1” or “Terminal 1.” Connect the black motor wire to the contact on the pressure switch labeled “T2” or “Terminal 2.”
Step 6: Connect the pressure gauge wire
Connect the wire from the pressure gauge to the contact on the pressure switch labeled “P” or “Pressure.”
Step 7: Test the wiring
Once all the wires are connected, turn the power back on and test the wiring by turning on the compressor. The pressure switch should automatically turn on and off when the desired pressure level is reached.
FAQs
Q: What happens if the pressure switch fails?
If the pressure switch fails, the compressor will not turn on or off correctly, which can cause damage to the compressor or even lead to a dangerous situation. It is important to regularly inspect and maintain the pressure switch to ensure it is functioning properly.
Q: Can I replace a pressure switch myself?
Yes, you can replace a pressure switch yourself, but it is important to follow the manufacturer’s instructions and make sure the power is turned off before starting any work. If you are not comfortable working with electricity, it is best to hire a professional.
Q: How often should I replace my pressure switch?
It is recommended to replace your pressure switch every 2-3 years or as needed based on wear and tear. Regular maintenance and inspection of the switch can help prevent premature failure.
Q: How do I know what pressure level to set my switch at?
The pressure level should be set according to the manufacturer’s recommendations or based on the specific needs of your compressor. Consult the owner’s manual or a professional if you are unsure what pressure level to set your switch at.
Q: Can I use a pressure switch from a different brand or model?
It is best to use a pressure switch that is specifically designed for your air compressor to ensure compatibility and proper functioning.
Now that you know how to wire an air compressor pressure switch, you can maintain the optimal pressure level in your compressor tank with ease. Remember to always follow safety precautions and consult the owner’s manual or a professional if you have any questions or concerns.
