If you are looking to install a pressure switch in your air compressor, you need to know how to wire it correctly. The pressure switch controls the on and off function of your compressor, ensuring that it turns on when the pressure drops below the set limit and stops once the pressure reaches the upper limit. This article will guide you on how to wire a Viair pressure switch and provide essential FAQs about the subject.
What is a Viair pressure switch?
A Viair pressure switch is an essential component in the operation of a compressed air system. It is responsible for turning the compressor on and off by monitoring the pressure in the air tank. Once the pressure in the tank drops below the set lower limit, the pressure switch signals the compressor to turn on and build up pressure until it reaches the upper limit, where it signals the compressor to turn off. It is crucial to wire the pressure switch correctly to prevent any accidents or damage to the system.
Components of a Viair pressure switch
A Viair pressure switch has three essential components:
- A switch that controls the function of the compressor
- A pressure gauge to monitor the pressure levels in the tank
- A pressure relief valve that releases excess pressure from the system.
Wiring a Viair pressure switch
The Viair pressure switch comes with four wires that need to be connected correctly. The black wire is the power source, the red wire goes to the compressor, the white wire goes to the pressure gauge, and the green wire goes to the pressure relief valve. Here are the steps to follow when wiring a Viair pressure switch:
- Turn off the power supply to the air compressor.
- Disconnect the wires from the old pressure switch and remove it from the system.
- Attach the black wire to the power source and secure it with a wire nut.
- Connect the red wire to the compressor and secure it with a wire nut.
- Connect the white wire to the pressure gauge and secure it with a wire nut.
- Connect the green wire to the pressure relief valve and secure it with a wire nut.
- Mount the pressure switch to the system and secure it with screws.
- Turn on the power supply to the air compressor and test the system to ensure it is working correctly.
Troubleshooting Viair pressure switch wiring issues
Even with proper wiring, the pressure switch can develop issues that affect its operation. Here are some of the common problems you may encounter and how to troubleshoot them:
The pressure switch won’t turn off
If the pressure switch won’t turn off, the problem could be a defective pressure switch, incorrect wiring, or a malfunctioning pressure relief valve. Check the wiring to ensure it is correct, and the pressure relief valve is functioning correctly. If the wiring is correct and the pressure relief valve is okay, replace the pressure switch.
The pressure switch won’t turn on
If the pressure switch won’t turn on, the problem could be a defective pressure switch or faulty wiring. Check the wiring to ensure that it is correct and secure before replacing the pressure switch.
The pressure gauge is not working
If the pressure gauge is not working, it could be a faulty gauge or incorrect wiring. Check the wiring and connections to ensure they are secure and proper. If the wiring is okay, replace the pressure gauge.
Frequently asked questions
1. What is the role of a pressure relief valve in a Viair pressure switch?
The pressure relief valve ensures that the air compressor does not over-pressurize by releasing excess pressure from the system when the pressure switch fails to turn off the compressor.
2. Can I use any pressure switch in my air compressor?
No. The pressure switch needs to be compatible with your air compressor specifications to ensure that it functions correctly.
3. Can I wire a Viair pressure switch without prior experience?
It is recommendable to have some knowledge about electrical wiring before attempting to wire a Viair pressure switch. Seek assistance from a professional if you are not confident in your abilities.
4. How often should I replace my air compressor pressure switch?
The pressure switch should be replaced when it starts malfunctioning or after every 12 to 18 months of consistent use.
5. Can I use a Viair pressure switch for a hydraulic power unit?
No. Viair pressure switches are specifically designed for compressed air systems and cannot be used for hydraulic power units.
| Wire Color | Function |
|---|---|
| Black | Power source |
| Red | Connects to the compressor |
| White | Connects to the pressure gauge |
| Green | Connects to the pressure relief valve |
