The vacuum of the vacuum drying oven cannot achieve the expected effect, or it can only maintain a short vacuum time. For such problems, whether the cabinet is leaking should be considered. Now find out the cause of the air leakage and find the solution to the problem. The following points are worth noting .
1. Check whether the vacuum connection pipe (the connection line between the vacuum pump and the vacuum exhaust port can be connected by rubber or stainless steel pipe) is damaged, and whether it should be replaced directly.
2. Check whether the density of each valve is the same as that of new, closed and leak-proof. The inspection method is mainly physical inspection. Vacuum the vacuum drying box to the highest level, and ensure that the vacuum drying box vacuum is at the highest level, and make sure there is suction at the valve door. If the closed valve has a sense of suction, the valve must be replaced. If the valve door is large, this method cannot be achieved. This method can be achieved with silicone rubber skins, and it may be faster to recognize body sensations.
3. Check whether the sealing ring and gasket are aging and damaged. If there is aging and damage, it must be replaced immediately, which is likely to prevent the vacuum from pumping out.
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