1.Before starting the centrifugal pump, the idle load test should be prohibited, and the liquid test should be carried out according to the operation rules stipulated above. For the forced lubrication system, the temperature rise of the centrifugal pump bearing oil should not exceed 28 ℃. Bearing metal temperature should be less than 93 ℃.
- For centrifugal pumps with oil ring lubrication or splash lubrication system, the temperature of lubricating oil shall not exceed 39 2. For centrifugal pumps with oil ring lubrication or splash lubrication system, the temperature of lubricating oil shall not exceed 39 degrees, and the temperature of bearing parts shall be less than 82 degrees, and the temperature of bearing parts shall be less than 82 2. For centrifugal pumps with oil ring lubrication or splash lubrication system, the temperature of lubricating oil shall not exceed 39 degrees, and the temperature of bearing parts shall be less than 82 degrees.
- The vibration value of the bearing of centrifugal pump should also be checked when testing the centrifugal pump. The vibration standard of the bearing of the centrifugal pump can refer to the vibration standard of the relevant Petrochemical rotating machinery.
- The centrifugal pump operation should be very balanced, no noise, the coolant and lubricating oil system should be normal, and the centrifugal pump and its auxiliary pipeline should not leak.
- In the process of testing the centrifugal pump, attention should be paid to whether the current of the centrifugal pump motor is running within the prescribed range. If the overcurrent indicates that the actual working condition head is lower than the pump head, It is recommended that the small outlet valve be closed to control the flow of the centrifugal pump so that its current is used in the rated current range.
- All seals and medium leakage of centrifugal pumps shall not exceed the following standard requirements:
(1) water centrifugal pump with mechanical seal: light oil 10 drops /min, heavy oil 5 drops /min
(2) multistage centrifugal pump products with packing seal: light oil 20 drops / min, heavy oil 10 / min
(3) No visible leakage is allowed for the transmission of toxic, harmful, flammable and explosive media by magnetic drive pumps