The compressor serves to circulate the refrigerant in the refrigerator's cooling system. The refrigerant will continue to circulate through the pipeline in the cooling system. After passing through the compressor, the refrigerant will then enter the condenser to cool. After passing through the condenser, the rigerer will enter the capillary pipe which will be filtered first by a filter which will then enter the evaporator and return to the compressor.

The refrigerant will continue to circulate as long as there is no deadlock in the refrigerator piping system. The most convenient channel for the refrigerator is in the capillary tube. This is because the capillary tube has a very small diameter. Although refrigerant before entering the capillary tube has been filtered first on the filter, but dirt that is smaller in diameter than the filter hole can accumulate on the channel and will clog the capillary pipe. Capillary pipe impasse can occur with two criteria, namely total dead end and partial dead end. Both have different signs. Let's discuss both.

Total Capillary Pipe Dead
If there is a part of the cooling system that is totally deadlocked, then the compressor works will also be disrupted. When the total dead end capillary tube, the refrigerant silkus will stop at the high pressure side (condenser) which causes the pressure on the condenser to be very high. The high pressure on the condenser causes the compressor to work heavily which causes the consumption of electric current to be higher than normal conditions.

The high electric current causes overload to become hot and overload contact will open (the compressor turns off). After a while (cold overload) the overload contact will close again (the compressor returns to work). And so on, so the refrigerator cabinet is not cold.

Partially dead capillary pipes
If the capillary tube is partially dead, then it is similar to a capillary tube with total deadlock. The difference is that the opening of contacts on the overload takes a long time. This happens because some refrigerants can still flow through the capillary pipe so that the compressor will not immediately heat up so that the overload will also open up longer.

To overcome the problem of a dead end capillary tube must remove the capillary tube and remove the material that clogs it. If the capillary pipe has been removed, replace the filter / drier. But what must be considered is when installing capillary pipes and filters. At the time of welding, it is very possible that crust will occur because the remaining lubricating oil is still attached to the capillary pipe which is subjected to high heating during welding. This crust will cause a blockage in the capillary tube itself. Therefore we must make sure that the parts we weld are clean of lubricating oil or other contaminants.

So many articles about the capillary pipe deadlock on the refrigerator unit. Hopefully it can be useful.

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