What should I do if the cooling effect of the chiller is not ideal

Update:17 May 2019

With the improvement of medical technology, fermentatio […]

With the improvement of medical technology, fermentation technology is more widely applied to the pharmaceutical industry. For example, microorganisms, amino acid drugs, and traditional Chinese medicines all undergo fermentation. But the problems that come with it are also increasing, and the control of fermentation temperature is a big problem. In order to better control the temperature and ensure the stability of the drug effect, some pharmaceutical companies use a chiller for temperature control and achieved good results. What should I do if the cooling effect of the chiller is not ideal?

Although the working principle of the chiller has been clarified, in practice there are still some pharmaceutical companies that have encountered unsatisfactory cooling effects. The manufacturer of the chiller said that any machine will encounter problems. The user should do regular maintenance and repair work to extend the service life of the machine. For the chiller, it can also ensure a certain cooling effect. Specifically, we can start from these four aspects:

 First, check the compressor regularly. The compressor is the "heart" of the industrial chiller, and its quality directly affects the stability of the chiller when it is used. If the compressor fails and repairs, the repair cost will be higher, especially the screw compressor. Therefore, in the daily operation, if you hear abnormal sound or other conditions of the compressor, you should contact the manufacturer to find a professional engineer to find out the cause and carry out maintenance.

Second, the condenser and evaporator are cleaned regularly. The condenser and evaporator are the second most important components of the chiller. Experts recommend cleaning once every six months. The cooling water of the water-cooled condenser is an open circulation circuit. The tap water used is recycled through the cooling water tower, and it is easy to decompose and deposit impurities to form scale on the water pipe, which affects the heat transfer effect. Over time, the fouling will be too thick, which will reduce the flow cross section of the cooling water, reduce the amount of water, and increase the condensing pressure.

Third, replace the lubricant regularly. After long-term use of the chiller, the oil quality of the lubricating oil will deteriorate, and the impurities and moisture inside the oil will increase, so it is necessary to observe and check the oil quality regularly. Once the problem is found, it should be replaced in time. The replacement lubrication is subject to the original manufacturer's instructions.

Fourth, replace the dry filter regularly. The drying filter is an important part to ensure the normal circulation of the refrigerant. Since water and refrigerant are incompatible with each other, if the system contains moisture, it will affect the operating efficiency of the chiller. Therefore, it is important to keep the inside of the system dry. The filter element inside the dry filter should be replaced regularly.