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How to maintain the clean water centrifugal pump?

13 May 2022Email

The clean water centrifugal pump is a rear opening type, and it is not necessary to disassemble the suction and discharge pipelines when disassembling the pump cover and impeller. The suspension houses two ball bearings, lubricated with machine oil or grease. The pump is directly driven by an electric motor through an elastic coupling. The vortex chamber, feet, inlet flange and outlet flange are cast as a whole.



The clean water centrifugal pump is used for suction and delivery of clean water and liquids whose physical and chemical properties are similar to water without solid particles. The clean water centrifugal pump is designed according to the performance and size specified by the international standard IS02858, and its technical standards are all close to the international standards and reach the international advanced level. The clean water centrifugal pump is one of the energy-saving pump products popularized in my country.

Maintenance is easy to solve as long as you understand the mechanical structure. The clean water centrifugal pump is a simple machine. Maintenance should pay attention to use within the rated range, do not run without load, pay attention to avoid cavitation and steam binding, strengthen inspections, and replace worn sealing parts in time.

(1) If abnormal sound is found in the centrifugal pump, stop immediately to check the cause.

(2) When the clean water centrifugal pump is to be stopped, first close the gate valve and pressure gauge, and then stop the motor.

(3) In the first month of operation, the clean water centrifugal pump should replace the lubricating oil after 100 hours, and after every 500 hours, change the oil once.

(4) Regularly adjust the packing gland to ensure normal dripping in the packing chamber.

(5) Regularly check the wear of the shaft sleeve, and replace it in time after the wear is large.

(6) Check whether there is looseness in the pipeline and joints of the clean water centrifugal pump. Turn the clean water centrifugal pump by hand to see if the clean water centrifugal pump is flexible.

(7) Add bearing lubricating oil into the bearing body, observe that the oil level should be at the center line of the oil mark, and the lubricating oil should be replaced or supplemented in time.

(8) Unscrew the water diversion plug of the pump body of the clean water centrifugal pump, and fill the water diversion.

(9) Close the gate valve and outlet pressure gauge of the water outlet pipeline.

(10) Jog the motor, and check whether the rotation of the motor is correct.

(11) When the clean water centrifugal pump is used in the cold winter season, after stopping, it is necessary to unscrew the drain plug at the bottom of the pump body to drain the medium. Prevent freeze cracking.

(12) If the clean water centrifugal pump has been out of use for a long time, the tin-free welded pipe should be disassembled, the water should be wiped dry, the rotating parts and joints should be coated with grease and installed, and stored properly.

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