Shanghai Haozhuang Instrument Co., Ltd. Haozhuang (LNB) brand HX series low-temperature constant temperature circulator provides high and low constant temperature liquid in the temperature range of -40 ℃ ~ 105 ℃ Need. The low-temperature constant-temperature circulator is particularly suitable for use with experimental equipment such as chemical reactors, fermentation tanks, rotary evaporators, electron microscopes, Abbe folders, evaporating dishes, and bio-pharmaceutical reactors. Advanced internal circulation and external circulation pump system. The internal circulation makes the temperature of the instrument uniform and constant. The external circulation pump outputs 16 liters / min ~ 18 liters / min. At high flow and low temperature liquid. Various containers containing biochemical reagents or samples to be tested can also be placed in the working tank volume of 8 to 40 liters, and high or low temperature tests or tests can be directly carried out to realize multi-use of one machine. Shanghai Haozhuang tells you how to maintain the low temperature thermostat: 1. Maintenance of low temperature constant temperature circulator 1. The water cycle is normal for more than a year, but now the cooling rate seems to be getting slower and slower, which is more obvious when the temperature is higher. The solution is very simple to use the water cycle, but regular maintenance work can not be ignored. There are many seemingly faulty problems that are caused by failure to do regular maintenance. The electrical power of the water cycle and the heat taken by the refrigerant from the load need to be removed from the radiator at the front vent hood. If the front vent hood is full of dust and willow cotton, etc. will hinder the dissipation of these heats, and the cooling effect will be Great discount. Generally speaking, the decrease in cooling capacity under normal use conditions is caused by poor ventilation and heat dissipation or high ambient temperature. 2. The water circulation was used normally in the past, but now it is found that the noise is much louder than before. What is the reason for this? Haozhuang will explain it to you Answer: As mentioned earlier, the routine maintenance of the water cycle is also related to this problem. Everyone knows that there are very few impurities in the water. Even if distilled water is added to the water tank, it is impossible to guarantee that there is no impurity at all. For the water cycle, the general temperature is set at 20 ℃, especially adapted to the growth and reproduction of microorganisms. After a long time, these microorganisms will block the filter of the waterway and cause the backwater to be poor, and the pump will have a loud noise. Sometimes these microorganisms are attached to the surface of the heat exchanger, causing the heat transfer effect of the heat exchanger to deteriorate and the cooling capacity to become smaller. Therefore, the daily maintenance work must be done in strict accordance with the requirements in the manual, the inner tank should be cleaned regularly, and the tank should be kept dry for a long time. There seems to be water leakage in the water circulation, and sometimes there will be a few drops on the ground. Is there a leak on the waterway? Generally speaking, during normal use, there will be no leakage on the waterway. When the relative humidity in the air is relatively high and the relative humidity in the air is too large, dew condensation is easy to condense at the water pump, water pipe joints, and external water pipes in the water circulation circuit. After accumulating, it will drip onto the ground. Do n’t worry about it in the waterway Leaking place. If you care about this, turning on the air conditioner to lower the room temperature or dehumidifying can avoid dew. 2. Notes on the use of low temperature thermostat circulator 1. Use low temperature tank-add liquid medium into the front tank of the low temperature thermostat, the liquid level of the medium should be about 30mm lower than the worktable, otherwise the heater will be damaged when energized; 2. The selection of the liquid medium in the low-temperature constant temperature bath should comply with the following principles: When the working temperature is 5 ~ 85 ℃, the liquid medium generally selects water; When the working temperature is 85 ~ 95 ℃, the liquid medium can choose 15% glycerin aqueous solution; When the working temperature is higher than 95 ° C, the liquid medium generally uses oil, and the open cup flash point of the selected oil should be higher than the working temperature by more than 50 ° C; 3. Power supply: 220V50Hz, the power supply should be greater than the total power of the instrument, the power supply must have a good "ground" device; 4, the instrument should be placed in a dry and ventilated place, no obstacles within 300mm around the instrument; 5. When the working temperature of the thermostatic bath is high, be careful not to open the upper cover and do not enter the bath with your hands to prevent burns; 6. After use, all switches are turned off to cut off the power supply; 7. The instrument should do regular cleaning work to keep the work surface and operation panel clean; 8. Always pay attention to observe the liquid level in the tank. When the liquid level is too low, the liquid medium should be added in time; considering the safety factors, we stipulate that the constant temperature tank above 100 ℃ is made into an internal circulation. If the external circulation is changed according to the customer's requirements, the customer should pay special attention to the firmness of the connection of the outlet pipe to prevent it from falling off to avoid burns. Shanghai Haozhuang Instrument Co., Ltd. is a manufacturer of experimental instrument equipment. Its products include low-temperature constant-temperature circulators, low-temperature constant-temperature baths, high-temperature circulators, low-temperature coolant circulation pumps and other products. Your inquiry is welcome to buy! 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Maintenance method of low temperature constant temperature circulator