Introduction
In this circuit a compressor motor and a pump is used.The compressor is used to compress the air and the pump is used to fill the tank with a liquid.The overload relays are used to protect both motor and a pump.In this circuit the pressure switch is used to control the pressure of the liquid.The circuit is used to indicate the level of the liquid in refrigerator.
Explanation
This circuit is designed to measure the oil level in refrigerator.In this circuit the compressor and the pump works together and the pump starts filling the required or connecting tank with the liquid and when the tank is filled completely the pressure switch opens it's own contacts,by this the pump stop working and the power will be off.Then the flow switch changes it's position and the indicator starts indicating the signal that the tank is filled completely.
Circuit Diagram
Uses
This type of systems are used in the process of refrigeration.
