Centrifugal pumps are an integral part of any industrial plant, as well as a home or other building. These pumps are used to pump liquid, gas or air from one place to another. During operation, a centrifugal pump can experience various kinds of damage and malfunctions, so periodic maintenance with the repair of centrifugal pumps is a necessary process to maintain their efficient operation and extend their service life.

The first step in the maintenance of centrifugal pumps is to switch them off and disconnect them from the power supply. Then perform the following steps:

• Inspection and cleaning. The first step is to check the centrifugal pump for any damage or missing parts. Then, all parts of the pump should be cleaned to remove any dirt or scale. It is important not to leave any part unattended, as dirt build-up can lead to a reduction in pump performance.
• Check the clutch. After cleaning the pump, check the coupling of the pump shaft to the motor to ensure that it is functioning correctly. If the centrifugal pump is located at height, the clutching mechanisms should be checked to ensure the safety of the workers.
• Checking electrical connections. After checking the clutch, check the electrical connections of the pump. This includes checking the cables, disconnecting and reconnecting the connection terminals, checking for electrical current and voltage compliance. If any problems are found with the electrical connections, an electrical specialist should be called to rectify them.
• Checking for leaks. Check for liquid or gas leaks from the pump. If a leak is detected, determine the cause and correct the problem to prevent further loss of liquid or gas.
• Check the operation parameters. Once the pump has been checked and cleaned, the pump's operating parameters such as pressure, flow rate, rpm and power consumption should be checked. These parameters should be compared to the standard values for the pump type to ensure that it is functioning correctly.
• Lubrication and replacement of parts. If the inspection reveals any damaged or worn parts, replace or lubricate them. The pump shaft and other moving parts should also be lubricated to ensure efficient operation and reduce noise.

After completing all these steps, the electrical power supply to the pump must be restored and the pump must be tested in real-world conditions. Regular maintenance of centrifugal pumps is important to maintain their efficient operation and extend their service life, so it is necessary to perform these procedures regularly according to the pump manufacturer's recommendations and depending on the operating conditions. It is also important to keep safety in mind and follow electrical safety regulations when performing maintenance. If any problems are detected with the pump, contact an electromechanical specialist to resolve them.