Product Description
The relay is used for protection when the pressure is too low
When the pressure drops over the allowable value, the relay is responsible for disconnecting the compressor to protect and maintain stable operation for the machine and the whole system.
The relay operation: when in a normal state, the 2 contacts of the relay are always closed, the machine works completely normally until the pressure drops low, causing the folding film of the machine to shrink. Due to the greater force of the spring, the 2 contacts are separated from the machine's operation. To restart you need to press the reset button.
The relay protects the machine when the pressure exceeds the allowable level
When the pressure reaches the max value, the relay will automatically disconnect the power source to ensure safety and limit problems with the air compressor.
Working process: the structure of the relay has 3 contacts. When the machine operates in a normal state - when the pressure is up to a pre-installed value, the diaphragm has a force greater than the tension of the impact spring, the contacts separate lead to power off the air compressor.