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The maintenance of multi-stage pumps is typically divided into two main phases: during operation and when the pump is inactive. Proper maintenance and overhaul are essential to ensure the longevity, efficiency, and safe operation of these pumps. Below are the key requirements for maintaining and overhauling multi-stage pumps:
Multi-stage pumps, particularly horizontal centrifugal types, are designed using energy-efficient hydraulic models that meet national standards and are considered industry leaders in technology. The D-type horizontal centrifugal multi-stage pump offers high efficiency, a wide range of performance, stable and safe operation, low noise levels, long service life, and convenient installation and maintenance.
These pumps are widely used in various industries such as factories, mines, cities, power plants, oil and gas, chemical processing, light industry, environmental protection, water supply and drainage systems, agricultural irrigation, and other water management projects. Since they are commonly made of cast iron, they are durable and suitable for many applications. Therefore, it is crucial to perform regular maintenance on the D-type horizontal centrifugal multi-stage pump to ensure smooth operation and extend its service life.
Here are the detailed maintenance and overhaul guidelines:
1. Routine Maintenance of Multi-Stage Pumps
a. During periods of inactivity, replace the old packing material of the horizontal centrifugal multi-stage pump, change the lubricating oil (in the thrust bearing box of the water pump), and flush the water guide bearing with water for about 2 minutes each month. Also, inspect the entire pumping system to check if any fasteners are loose or damaged.
b. While the pump is operating, monitor the leakage from the packing, the pressure of the lubrication water, the oil level, and the temperature of the bearings. Keep accurate records of any issues encountered, such as faults or irregularities in the horizontal centrifugal multi-stage pump.
2. Overhaul of Multi-Stage Pumps
a. Before overhauling, make sure the motor control switch is turned off, and hang a warning sign to prevent accidents and ensure personal safety.
b. When disassembling the pump, label all joints to facilitate reassembly. Store small parts and fasteners in labeled boxes. Clean and apply anti-rust oil to the removed components. If rust is found on the surface, remove it and repaint. Do not reuse O-rings, packing, or corroded fasteners, and ensure spare parts are available for replacement.
For more information, you can explore related topics like self-priming sewage pumps, stainless steel butterfly valves, hard-seal ball valves, electric control valves, and pneumatic ball valves. 