Regular troubleshooting is essential because it helps avoid unnecessary repair costs. However, if an unexpected emergency occurs, the best way out is to invite experts, for it is crucial to know what happened inside the refrigerator.

What happens when a refrigeration system breaks down?

When gas freon becomes liquid or vice versa, the condenser has evaporation going on inside it. That is one of the main processes taking place inside vapor compression refrigerators. It guarantees efficient performance and is quite power-consuming unlike other chilling techniques. So, if the refrigeration plant's compressor breaks down we need to know what caused it. Normally, compressors are oiled, therefore liquids might lead to some difficulties.

When low-temperature liquid gets inside the compressor, the oils get washed out of friction couples and then becomes viscous. That is why the device might become jammed. Freon drops inside the compressor along with mechanical pressure will trigger the so-called sticky cold process.

If too much coolant leaks out, the compressor might experience a hydraulic shock, because the liquid is not compressed. How do we know there was a hydraulic shock? The compressor will have more intensive vibrations and will be emitting some specific sounds. In this case the repairs will cost a lot. If you notice any of these signs you must request professional assistance.

Sealed compressors' failure might be caused by wet compression, insufficient oil or uneven oil distribution. When we know what exactly caused the breakdown we have to take care of the wet compression. The secondary cause might be either insufficient flow from the system into the compressor or uneven distribution. 

Wet compression causes hydraulic shock. In most cases, that is the main reason behind the breakdown. First of all, repairs of a refrigeration system are all about installation and freon refilling. During operation the heat pump forms an ice coat which is then melted by warm water's or coolant's hot vapor, or if the evaporator is exposed to direct sunlight.

Any processes relating to breakdown and, therefore, repairs of refrigeration plants with liquid freon inside might have an affect on the outcome, especially in winter. If the plant is kept outside and the temperature is low, the compressor's freon will most likely be condensated if it stops. In addition, this same thing might happen if the compressor unit becomes the system's coldest point.


When the compressor's bearing start operating, liquid coolant flows in, then goes on into cylinders and silencers. In this case a major breakdown might occur, cause a hydraulic shock, and destroy the padding between standing and forcing valves, silencer, plungers and the rod.

A hydraulic shock is very likely to occur under sharp temperature fluctuations. For instance, if the equipment that was outside is brought into a place with temperature above zero.

Remember that regular troubleshooting will help you avoid equipment failures.