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Reaons for hussman freezer compressors failuer Model No:NLD 2

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Normally compressors fail due to overheating. But just like any machine that may run 24 housr a day 7 days a week, the compressor may just wear out. Overheating is caused primarily by stopped up condenser coils. The condenser coil is the radiator like object that sits close to the compressor and dissapates heat created by the compressor. Also if the fan behind the condenser coil fails because of an obstruction or fan motor burnout the heat will not be dissapated properly. The compressor has protection built in that should shut it off during an overheating situation, but it can't protect it over a period of time where the compressor keeps trying to start and shuts down due to overheating. If you look at the condenser coil in many cases you will find dust and or grease build up so dense that no air flows through the coil. This is simply neglect or not knowing that the coil needs to be cleaned periodically. Also, if you have a refrigerant (freon) leak, your compressor will overheat. The cold returning freon helps to keep the internal components of the compressor cool as well as keeping the oil inside the compressor churning up onto the internal components. If you have a leak, it is not sufficient to just add freon every once in a while. Leaks need to be fixed by finding the leak and welding the leak shut. No refrigeration system should require "gassing up" other than the initial charge of refrigerant. Overheating can also be caused by a lack of air flow through the condenser coils because there is no space around the machine for air to flow into and out of the compressor compartment. If you have recently replace a compressor and it goes bad again, it may be burnout residue from the previous compressor that clogs the lines after a burnout. I hope this answers your question.

Posted on Oct 12, 2010

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