The medical refrigerator is a professional refrigeration that mainly stores and stores drugs, vaccines, enzymes, hormones, stem cells, platelets, semen, transplanted skin and animal tissue samples, extracted RNA and gene libraries, and some important biological and chemical reagents and other special drugs. cabinet.
Medical refrigerators are widely used in many industries and fields such as scientific research institutions, medical and health care, biopharmaceuticals, pharmacies, etc., and are one of the indispensable medical equipment. Medical refrigerators have strict temperature control devices, and their performance and uses are quite different from household refrigerators.
classification
Refrigerators are divided into 9 types according to different principles: compression refrigerators, absorption refrigerators, semiconductor refrigerators, chemical refrigerators, electromagnetic vibration refrigerators, solar refrigerators, adiabatic and demagnetized refrigerators, radiant refrigerators, and solid refrigerators. Most medical refrigerators are compression refrigerators.
Malfunction and maintenance of medical refrigerator
The failures of medical refrigerators can be divided into three types: control system failures, refrigeration system failures and common circuit failures.
1. Compressor failure: 1) The compressor is neither running nor cooling. It is necessary to check whether the power supply line and temperature controller are faulty, and the compressor itself needs to be replaced if it is faulty. 2) The compressor works normally, but the cooling effect is not obvious. It is necessary to check whether the amount of refrigerant is sufficient and whether it is leaking; secondly, whether the refrigeration pipe is blocked. 3) If the compressor starts and stops frequently, check whether there is too thick frost on the evaporator; the temperature sensor bulb of the thermostat is not firmly fixed; the temperature is not adjusted properly.
2. Refrigeration system failure: 1) The medical refrigerator motor cannot start normally and makes a humming sound, indicating that the compressor is malfunctioning. 2) Intermittent refrigeration or no refrigeration occurs during use, which may be caused by the blockage of the refrigeration pipe.
3. Refrigerator leak detection: The halogen lamp leak detection is more accurate. The halogen lamp uses ethanol as fuel, and the leakage is judged by observing the color of the flame.
