What happens when the water ring vacuum pump reverses and how to prevent it This is a schematic diagram of a water ring vacuum pump We can see from the picture; Suppose it is a reverse case; 1. The inlet and exhaust ends will be reversed. Due to the bending direction of the impeller, the inlet end will exhaust and drain slightly, and the exhaust end will intake slightly, but it will not achieve its rated effect. 2. If it operates for a long time, it is possible to turn negative pressure into positive pressure, but there will be no vacuum. 3. In addition to the impeller, the water ring pump also has a very important thing, the valve plate. When the water pump reverses, the valve plate loses its function. 4. As for any damage, the problem is not big, and the impeller bolts may be loose. Prevent reverse rotation. In order not to loosen the lock nut on the rotor, it is recommended that you disconnect the coupling and test the motor. After reversing, you will not be able to exhaust, and your suction vacuum will be very low or not. As long as the motor is not connected to the wrong line, it is impossible to turn over.