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High and low temperature test chamber generally has a temperature control humidity control and refrigeration machine role, due to the role of the refrigerator, its machinery and equipment in the whole process of application will appear frozen and ice blocked, and the key to this situation is the following levels: One: open the tailgate during the whole process of the experiment, and there will be a frozen condition
in the room at work.
Reason two: too much refrigerant moisture leads to ice blockage
.
Reason three: the filter drier embrittlement is ineffective, losing the necessary dry and hygroscopic effect
.
Reason four: when the refrigeration compressor leaks in the charge type, the water vapor in the gas is converted into water, which is introduced into the pipeline and causes ice blockage
.
Reason five: after the high and low temperature test chamber refrigerator air conditioning evaporator is damaged, the oxygen molecules in the refrigeration chamber are started for a long time, together with the water vapor in the gas, brought to the refrigeration compressor.