1. During inspection, the rotary vane vacuum pump shall be isolated before inspection.
2. First, isolate the suspicious parts of the system from the valve to the rotary vane vacuum pump, valves, flanges, and pipe weld bends, and conduct detailed leak detection.
3. The vacuum gauge method is usually used, that is, use a brush dipped in alcohol, acetone and other organic solvents to smear the above suspicious parts and the air inlet seam of the rotary vane vacuum pump one by one, and at the same time, observe the change of the vacuum gauge or glow color. When the vacuum gauge shakes or the purple glow turns milky white, it can be determined that the coated part has air leakage.
4. When the leakage is small, this method is difficult to detect, and a more sensitive method should be used to detect the leakage.
5. If there is air leakage, it can be repaired.
6. If there is a problem with the rotary vane vacuum pump itself, the rotary vane vacuum pump should be removed from the vacuum system for maintenance.
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