How to properly use and maintain the cryogenic refrigerator ?

Refrigerator is an essential appliance in people's lives, of course, is also mainly used for life, preservation role, but the cryogenic refrigerator, relatively speaking, the use of a wider range, this cryogenic refrigerator is mainly used for scientific research, biological products, chemical materials, medical preservation, etc. Applicable to low-temperature experiments and storage of industry sectors, the use of a wide range of maintenance, of course, and household refrigerators are different.

Low-temperature refrigerator maintenance and maintenance for the extension of its life and normal use is particularly important, if the temperature control is inaccurate often lead to the preservation of the object is damaged, the results of the experiments have a great impact on the impact of the normal conduct of research work.

1. Clean the refrigerator once a month to ensure its cleanliness

Use a dry cloth to remove a small amount of dust on the inside and outside of the refrigerator and accessories, and if the refrigerator is too dirty, use neutral detergent, and then rinse thoroughly with pure water after cleaning. However, do not rinse inside and on top of the refrigerator as this will damage the insulation and cause malfunctions. The compressor and other mechanical parts do not require the use of lubricants. Be careful when cleaning the electric fan at the rear of the compressor. Perform a safety check after cleaning to make sure the refrigerator is plugged in properly and not falsely connected; make sure the plug is not abnormally hot; and make sure the power and distribution wires on the back of the refrigerator are not cracked or etched.

2. Inadequate cooling of the refrigerator

Check the surface of the evaporator for frost; whether the refrigerator door is opened and closed too often; whether the back of the refrigerator is touching the wall; and whether too many items are being put in.

3. Alarm activation alarm

. When encountering an alarm activation alarm, it can usually be checked by the following aspects.

First, check if there is a problem with the power supply or if the plug has been pulled out of the socket;

Second, check if the internal thermometer is out of the proper range, in which case the placement of items will heat up the refrigerator and set off the alarm;

Third, check if you are placing too many items in it at once.

4. Refrigerator noise

Check whether the bottom plate is solid; whether the refrigerator is stable; if not stable, (constant temperature and humidity box) adjust the activity of the screws to make the four corners of the solid support in the bottom plate; whether there is an object in contact with the back of the refrigerator. If the cooling effect is poor, the refrigerator does not stop, the heat pipe is not hot, the evaporator has a very small air flow sound, these are because of slow leakage caused by a serious shortage of refrigerant. In the actual use of the process, there will be many other problems, the solution of such problems need to continue to accumulate experience to remove obstacles, so that the ultra-low temperature refrigerator to achieve the best working condition.