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Laboratory ultra-low temperature freezer maintenance and repair

发布时间: 2013-08-03  分类:news  浏览次数: 1655

Ultra-low temperature freezer for care and maintenance to extend its life and normal use is particularly important if the temperature control is not exactly the saved objects often leads to damage a great impact on the experimental results, thus affecting the research work carried out normally. 1. Cleaned once a month to ensure its cleanliness

     Refrigerator with a dry cloth to remove a small amount of external and accessories dust, if the refrigerator is dirty, use a neutral detergent, and then rinse thoroughly washed with pure water. But not in the refrigerator inside and on top flush, otherwise it will damage the insulation and cause a malfunction. Compressors and other mechanical parts without the use of lubricants. Clean the compressor rear fan with caution. After cleaning, carry out safety checks to ensure that the refrigerator plug good, not virtual access; make sure the plug is not abnormal heat; ensure the back of the refrigerator's power cord is not cracked and distribution wires and nicks. 2. Activate the alarm siren

     When confronted with alarm when the alarm starts, usually by the following aspects to be checked. First, check if there are problems or the power plug is pulled out jack;

     Second, check the internal thermometer is out of the proper range, in this case, one can make the refrigerator temperature set items and trigger alarms; Third, check whether one set of people too many items. 3. Inadequate cooling refrigerator

     Check the evaporator surface if there is frost; refrigerator door is switch off frequency; refrigerator is touching the back wall; whether to release too many items. 4. Refrigerator excessive noise

     Check the floor is solid; refrigerator is stable; such as instability, tuning activities to make the four corners of the screws firmly supported on the base plate; whether objects come into contact with the back of the refrigerator.

     If the cooling effect, refrigerator without stopping the machine, the heat pipe is not hot, there is a small evaporator airflow sound, because these are slow refrigerant leak caused serious defects sake. In actual use, will encounter many other problems, such solution to the problem needs to continue to accumulate experience before removing obstacles, making the ultra-low temperature freezer to achieve the best working condition



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