The full-temperature oscillation incubator fails during use: 1, first check whether the circuit is above the fault: observe whether the refrigeration compressor can start during the operation of the test chamber, the compressor can start during the operation of the environmental test equipment, indicating the main power to the compressor The line is normal, indicating that there is no problem with the full-temperature oscillation incubator electrical system. Unable to start is problematic. 2. If there is no problem with the electrical system, continue to check the refrigeration system. First of all, it is checked that the exhaust and suction pressures of low-temperature (R23) compressors of the two sets of refrigeration units are lower than normal values, and the suction pressure is in an empty state, which indicates that the amount of refrigerant in the main refrigeration units is insufficient. The full-temperature shaking incubator has two sets of refrigeration units, one is a host group and the other is an auxiliary unit. When the cooling rate is relatively high, the two units work simultaneously. At the initial stage of the temperature maintaining period, the two units still work simultaneously. When the temperature is initially stabilized, the auxiliary unit stops working and the host group maintains the temperature stability. If the host group R23 is leaked, the cooling effect of the host group will be small. Since the two units work at the same time during the cooling process, there is no phenomenon that the temperature cannot be stabilized, and the indicated cooling rate is reduced. In the temperature maintenance phase, once the auxiliary unit stops working, the main unit has no cooling effect, and the air in the test chamber will slowly rise. When the temperature rises to a certain extent, the full-temperature shaking incubator control system will start the auxiliary unit to cool down. The temperature dropped to the set point (-55°C) and the auxiliary unit stopped working again. As a result, the malfunction occurred. It can be seen that the cause of the failure is the leakage of refrigerant R23 of the host group's low temperature (R23) class unit. The refrigeration system was inspected and checked with a combination of a leak detector and soapy water, and a stem of a hot gas bypass solenoid valve was cracked. Replace the solenoid valve to recharge the system and the system is operating normally. Total temperature oscillation incubator maintenance method: 1. Accurately use and pay attention to the maintenance of the instrument to make it in a good working condition and extend the life of the instrument. The compressor should avoid continuous start. 2. The bearing of the transmission part has been filled with a proper amount of grease before leaving the factory. During the continuous operation of the instrument, grease should be filled once every six months, and the filling volume accounts for about 1/3 of the bearing space. . 3. During the continuous operation of the instrument, periodic inspections shall be performed every three months; check the fuses, control components, and fastening screws, and if any water droplets, dirt, etc., shall fall on the motor and control elements. 4. The instrument is used for a period of time and natural wear and tear is a normal phenomenon. One year after the instrument is used, if abnormal noises are found in the motor and compressor, the bearing in the transmission part is worn out, the belt is loose or cracked, and the electronic control element fails, etc., it shall be checked and replaced in time to avoid accidents caused by reuse. unnecessary trouble. More details about the product details of the full-temperature oscillation incubator, please contact us!
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The full-temperature oscillation incubator is used for bacterial culture, fermentation, hybridization and biochemical reactions, enzyme and cell tissue research, etc., which have high requirements for temperature and oscillation frequency. In medicine, biology, molecular science, pharmacy, food, environmental protection There are a wide range of important applications for research applications.
November 03, 2021