A compressor is a key component of any refrigerator. If it fails, this will affect the operation of the unit. Damage threatens a complete failure to operate the refrigerator. Therefore, it is worth trying to check the compressor yourself.
Check the compressor of the refrigerator: for resistance, for relays, pressure test
Be sure to check the resistance. If there is a malfunction, there is a chance of electric shock. You can check the compressor by the following parameters:
- resistance;
- pressure;
- current.
If the winding is damaged, voltage surges are observed that can transfer to the housing. To check the resistance, it is recommended to measure it in each of the 3 contacts, including the product body. Choose areas without paint. If there is no jump or damage, an infinity sign will appear on the screen of the diagnostic device.
It is recommended that a pressure diagnosis be made using a pressure gauge. It is necessary in the presence of indicators of structural failure, but the measurement of resistance did not clarify anything.
It is important to connect everything securely and correctly. Indicators are taken with the compressor turned on. You can get the following results:
- A value of 6 atmospheres appears on the screen, and the indicator starts to grow. This indicates the performance of the product.
- The pressure indicator is below 6 and begins to decrease. Which means having to replace the pressure housing.
It is also important to ring the start relay, which makes it possible to find out if current is supplied to the motor. You will need a multimeter with ticks. For a clean diagnostic, the basis of the study should be a working relay. It connects to the compressor cavity. Then one of the wires is clamped with pliers.
The indicator depends on engine power. If it is about 120 W, the display will show a result of 1.1-1.2 V. If the power is greater, about 140 W, then 1.3 V. will appear on the screen. This indicates the health of the relay. Other data indicates problems.
Attention! Starting self-diagnosis, it is important to be careful, to act carefully so as not to harm yourself.
Compressors in refrigerators
The compressor is an important component. If there are problems with it, the device will stop working. Therefore, to identify the causes of failure, it is important to understand how the compressor is designed and how it works.
How are compressors arranged in domestic refrigerators
This is the main part of any refrigerator. It has the appearance of a pump serving to pump refrigerant through the tubes. It removes hot air from the main part of the device.
It is the compressor that most often fails and leads to problems in the operation of the refrigerator. Often it is called the heart of the device. He plays one of the key roles in the correct, good functioning of the product. With its help, steam is pumped and placed in a condenser. It is there that the refrigerant makes it liquid.
The principle of operation of the compressor in the refrigerator
For normal operation of refrigeration equipment, refrigerant is required. Most often freon is used. He, moving in a closed circuit, changes his temperature indicators. Many parts of the structure help him in this, including:
- Compressor creating the right pressure.
- Evaporator taking heat from the refrigerator.
- Condenser that generates heat out.
The listed actions are dynamic. The compressor is operated by an electric motor. It is located inside the hull. For refrigerators, a piston type compressor, sealed, is used.
The main principle of the device is to transfer internal heat to the outside world, which allows the air in the chamber to cool.
Diagnostics and possible causes of compressor failure
Among the possible malfunctions and causes of failure in the operation of this part of the equipment it is worth noting:
- It does not buzz and does not start. There are several reasons for this. Perhaps the relay circuit has opened or the voltage is missing, too low. Then you need to check these indicators. The fuse could blow out.
- Buzzes, but does not start. The thermal relay is activated. It is necessary to check how correctly the electrical connections are made. A starting capacitor may cause a malfunction. The lack of starting is sometimes associated with the lack of triggering of the starting relay or with a short circuit of the motor winding.
- After starting, the starting winding does not turn off. Low refrigerant pressure and condenser malfunction can lead to this. Errors in the installation of the circuit can lead to similar consequences.
- It works, but the thermal relay is periodically triggered. May be due to excess current due to errors in electrical connections. Low voltage sometimes leads to similar problems.
- It works with short cycles. Perhaps due to malfunctions of the thermal field, or with the operation of the high pressure switch. This can provoke the presence of air, lack of cooling.
- It works with long cycles. The clogging of the refrigerant condenser or icing of the evaporator can provoke.
Tips for self-checking compressor in refrigerator
If there are any problems in the operation of refrigeration equipment, you can try to diagnose yourself. Be careful. Remember safety precautions. When using instruments for testing, it is important to verify that the connection is correct several times.
If a malfunction is found, it is recommended that you contact a specialist for repair. Independent attempts to fix the problem can lead to a worsening of the situation. Therefore, it is not necessary to carry out complex repairs yourself. Especially if you are not sure of the correctness of the results of the diagnosis. Otherwise, you will have to purchase new equipment due to a complete breakdown of the old.
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