Refrigerator Wiring Diagram and Connection
Hi, in this article, we are going to see the Refrigerator Wiring Diagram. We will see the Refrigerator connection with Switchboard, Circuit Breaker (e.g. MCB) and the power source. Also, here you will get the internal circuit diagram of a Refrigerator where the connection between each component like compressor, door switch, relay, thermostat, etc are described.
Understanding these wiring diagrams is very helpful because all of them together shows how all the parts of a refrigerator are interconnected and finally to the external electrical circuits. With the help of these diagrams, you can easily trace the flow of electricity from the power source to each external(mcb, switch) and internal(relay, compressor, thermostat, etc) component. This is especially useful when you are inspecting installation, repairing a refrigerator, checking for faults, or installing a new unit.
These wiring diagrams are very easy to read as it contains almost original pictures of components, so you can find out where a problem might be (like a loose wire or faulty part) and fix it safely. These diagrams also help you understand how the refrigerator works, which is useful for both learning and practical work. Whether you are a technician, electrician, student, or just someone who wants to know more, these diagrams make it easier to understand the internal wiring system.
External Wiring Diagram and Connection
Here, you can see how the refrigerator is to be connected to the external electrical circuitry or installation.
As you see in the above figure, the power lines come from the distribution board and go to the Double Pole MCB. The output of the MCB is connected to the switchboard. The power lines of the refrigerator are connected to the switchboard's five-pin socket. Actually, the refrigerator has a plug that is to be connected to the socket but to understand the connection, the plug is not used here.
Internal Circuitry
Here, you can see the connection of internal parts of a refrigerator.
- Compressor
- Relay
- OLP or Overload Protector
- Door Switch
- Thermostat
- Bulb
Compressor
A compressor is the main part of the refrigerator. It has a total of three terminals as shown in the above wiring diagram - Common(C), Start(S), and Run(R). The common terminal is to be connected to the neutral through an OLP and the Start and Run terminals are to be connected to the relay.
Relay
Here, the relay has a total of three terminals the input terminal is to be connected to the thermostat from where it will get the phase supply and the other two terminals are to be connected to the compressor start and run terminals.
OLP or Overload Protector
It is a safety device. When any fault happens with the compressor it will disconnect the power supply. Generally, it is connected in series with the neutral supply and the compressor common terminal.
Door Switch
It is connected in series with the lamp. It helps to turn on or turn off the light during the closing and opening of the refrigerator door. When we open the door it allows the supply to the lamp and the lamp will glow, and when we close the door it disconnects the power supply and the lamp or bulb will turn off.
Thermostat
The thermostat is the device or sensor that monitors the temperature inside the refrigerator and according to the temperature, it turns off and turns on the compressor.
Connection Description
In a refrigerator, the thermostat controls when the compressor should turn on or off based on the inside temperature.
The thermostat is connected to the relay, which helps start and run the compressor as it connected to the compressor starting ad running coils.
The compressor is the main part that cools the fridge, and its common terminal is connected through the overload protector, which keeps it safe from high current or overheating. The overload protector is usually placed between the power supply and the compressor.
The door switch is a small component that turns the inside light on or off when the refrigerator door is opened or closed.
All these parts work together through electrical connections to make sure the refrigerator runs safely and keeps things cool.
Read Also:
- Air Cooler Internal Circuit, Wiring Diagram, and Connection
- Air Conditioner Connection and Wiring Diagram
- [Explained] Connection of Tube Light with Diagram
- [Proper] Ceiling Fan Connection with Regulator, Switch and Capacitor
- Wiring Diagram of Solar Panel with Battery, Inverter, Charge controller and Loads.
Thank you for visiting the website. keep visiting for more updates.