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—— Fatih BÜYÜKEGEN
—— Hamid Doroudian
It is normal for the vacuum pump of the freeze dryer to start to smoke at the beginning of vacuuming, but if the smoke continues for a long time, it may be a malfunction. So what are the reasons for the smoke of the vacuum pump? What is the solution?
1. Whether there is air leakage in the freeze-drying chamber door of the freeze-drying machine;
Solution: Check the warehouse door to see if there is ice slag causing air leakage, and eliminate the bad sealing.
2. The vacuum pump itself leaks: the sealing ring and the gas ballast valve gasket are damaged or not pressed tightly, and the exhaust valve sheet is damaged, resulting in poor sealing.
Solution: Replace the sealing ring or valve plate according to the specific situation.
3. Is the oil level of the vacuum pump normal?
Solution: Pay attention to the maintenance of the vacuum oil pump. Generally, the oil level should be two-thirds of the sight glass, but not less than two-fifths.