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Common Failure Methods Of Vacuum Oven

As we knew, vacuum drying oven is widely used in medicine, food, light industry, chemical industry and other industries for low-temperature drying. It has the advantages of fast drying, low pollution, and no damage to the inherent quality of the dried items.

In order to improve the efficiency of users using the efficiency of vacuum oven, Yuanyao customer service staff will collect customer feedback questionnaires every year. Based on customer feedback, we have summarized several common faults and solutions for users as below.

1. There is no way to dry the sample when the vacuum oven working
Reason: It may be caused by the wrong using the drying oven. Vacuum drying process needs to be performed in a closed environment. If the water vapor generated during drying process and is not discharged in time, which will cause the water vapor to enter the sample again.
Solution: Replenish some air into the inner chamber every once in a while, and then use the vacuum pump to extract the water vapor, so that the operation can prevent the phenomenon that there is no way to dry the sample.

2. When the industrial vacuum drying oven comes on vacuum suction phenomenon
Reason: wrong operation when turning off the vacuum pump, the correct way is to close the valve first and then turn off the vacuum pump. If the order is reversed, under the influence of vacuum negative pressure, the water or oil of the vacuum pump will be sucked back.
Solution: Follow the correct sequence of operations, first turn off the valve and then turn off the vacuum pump. If it is easy to make mistakes, a check valve should be added between the vacuum pump and the vacuum drying oven. When the vacuum pump stops, the check valve will close the valve instantly, and there will be no vacuum suction.

3. The air leakage phenomenon occurs after the vacuum drying oven is used for couple years
Reason: The biggest reason is probably not that the drying oven is broken, but that the seal is damaged and aging,
Solution: Just replace the sealing strip in time. If the problem still cannot be solved, it means the valve is damaged. Just replace some valves.

4. Quite difference between the set temperature and the actual temperature in the vacuum drying oven.
Reason: Too often open and close the door or the temperature sensor is damaged
Solution: Try to reduce the number of opening and closing the door or replace the temperature sensor.

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