1. Before the start of multi -level centrifugal pumps, the rotor should be moved before starting, and then check whether the rotation of the rotor is flexible and not stuck.

2. View whether the rotation direction of the multi -stage centrifugal pump motor is consistent with the rotation direction of the multi -level pump.

3. Check the looseness of the connection bolt of multi -stage centrifugal pumps and motors and the safety of the centrifugal pump, and prepare the state of the pump at any time.

Precautions at runtime

The leakage of the filler sealing and mechanical sealing is often checked. If the filler seal is used, it is usually used as an oil graphite root according to experience. If the pumping pressure is too high, it is necessary to use a steel wire. Check the fever of the shaft seal and check the oil level and oil ring. The shaft of the multi -level centrifuge pump is rotated with rolling bearings and sliding bearings. Bearing lubrication can be divided into lubricating oil and fat. The operator needs to pay attention to changes in the temperature at the bearing at any time to ensure that there are no abnormal conditions such as the heating of the bearing.

Multi -level centrifugal pumps will have a certain axial movement at runtime, and the gap between the end surface of the motor and the pump connected shaft should be guaranteed. At the run, the operator should check the opening distance of the shaft and understand the degree of wear of the balance disk. View the loosening of the screws of the ground foot. The temperature of the pump body is the same as the temperature of the inhaled port.