Sanitary Centrifugal Pump Testing Method And Precautions

For all kinds of newly purchased and installed Sanitary Centrifugal Pump products, it is necessary to do centrifugal pump testing in advance after the installation is completed. When doing centrifugal pump testing, the following centrifugal pump testing methods and centrifugal pump testing precautions should be followed.
1. Before starting the centrifugal pump, it is forbidden to run the idling and no-load test. The liquid test should be carried out according to the operating procedures specified in the centrifugal pump operating instructions. For the forced lubrication system, the temperature rise of the centrifugal pump bearing oil should not exceed 28 degrees, and the temperature of the bearing metal should be less than 93°C.
2. For centrifugal pumps with oil ring lubrication or splash lubrication systems, the temperature of the lubricating oil cannot exceed 39 degrees, and the temperature of the bearing components should be less than 82 degrees.
3. When testing the centrifugal pump, the vibration value of the centrifugal pump bearing should also be checked. The vibration standard of the centrifugal pump bearing can refer to the vibration standard of relevant petrochemical rotating machinery.
4. During the centrifugal pump test, the operation of the centrifugal pump should be very balanced and noiseless, the coolant and lubricating oil system should be normal, and the centrifugal pump and its auxiliary pipelines should not leak.
5. During the centrifugal pump test, attention should be paid to whether the current of the centrifugal pump motor is running within the specified range. If the current exceeds the limit, it means that the actual working head is lower than the pump head. At this time, it is recommended to close the outlet valve to control the centrifugal pump flow so that the current is within the rated current range.
6. The leakage of various seals and media of the centrifugal pump shall not exceed the following standard requirements:
(1) Clean water centrifugal pump with mechanical seal: 10 drops/min for light oil, 5 drops/min for heavy oil
(2) Multi-stage centrifugal pump products with packing seal: 20 drops/min for light oil, 10 drops/min for heavy oil
(3) For magnetic drive pumps that transport toxic, harmful, flammable and explosive media, no obvious visible leakage is allowed.