-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
- Cosmetic Ingredient
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
Small rapid temperature change test box is with high temperature, low temperature environment test equipment, is a lot of industry areas are often needed to use, not familiar users in the use of the process is easy to encounter problems, the following analysis of hot and cold impact box is not refrigeration reasons?The refrigerant of the cold and hot shock box refrigeration principle is compressed by the compressor insulation to a higher pressure to raise the exhaust temperature, and then the heat is transmitted by the condenser and the heat exchange of the media around it, and then through the evaporator and other warm heat absorption from the higher temperature objects, so that the temperature of the cooled object is reduced to achieve the goal! The cold and hot impact test box uncooled phenomenon can be divided into the following two aspects: 1, electric control switching problem first look at the well to determine whether the cold and hot hit box refrigeration compressor is operating normally.
at the same time refrigeration compressor supply voltage, current is in a relatively stable state, electrical switching local instability situation conductor compressor is not refrigerated.
2, hot and cold impact box problem First check the cold and hot impact box refrigeration compressor in all parts of the pressure is normal, and then check the two sets of refrigeration units of the low temperature compressor, if the compressor exhaust and suction pressure are lower than normal value, the suction pressure is empty state, that means the main refrigeration unit refrigeration capacity is insufficient, to add it!Touch the exhaust line of the host group R23 compressor by hand, if you find that the exhaust line temperature is not high, the suction line temperature is not low, and there is no frosting situation, it can explain the lack of R23 refrigerant in the host group, add it again!The above method detection is not a problem, then to the refrigeration switcher leakage detection, with the detection of leakage and soapy water combined methods to check.
, such as thermostat and humidity test box generally have a long service life, but in the long-term use of the process, it is inevitable that some small problems, as long as timely processing on it.
.