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High-pressure plunger pumps are widely used in numerous industrial applications, including high-pressure cleaning, powder metallurgy, coal mining, and ship rust removal, relying on their high-pressure output to perform a variety of tasks. As precisiongrade high-pressure equipment, they feature highly accurate internal components such as plungers, sealing assemblies, and valve groups. If operated improperly or inadequately maintained, they are prone to issues like leaks, pressure instability, and premature component failure—problems that not only disrupt production schedules but also increase repair and replacement costs. Proper daily operation management and routine maintenance can maximize equipment performance, extend the overall service life, and minimize unplanned downtime.

During the equipment’s daily operation, proper operating procedures serve as the first line of defense. Before starting up, perform a thorough preliminary inspection: verify that all pipeline joints are securely connected and free from looseness or cracks; confirm that the filtration system is in good condition and that the fluid pathways remain unobstructed. Check the condition of the lubricating oil or hydraulic fluid—ensure it is neither cloudy nor degraded—and maintain the oil level at approximately two-thirds of the sight glass. Avoid immediately running the equipment at full load; instead, start with noload operation for a short period, monitoring pump vibration, noise, and pressure readings. Only after confirming that everything is functioning normally should you gradually increase the load and begin regular operation.

During operation, do not allow the pump to remain under overload conditions for extended periods to avoid exceeding its design capacity. Throughout the working process, closely monitor the equipment’s overall condition and pay attention to changes in the pump housing temperature. If you detect abnormal noises, severe vibrations, fluctuating pressure, or leaks at connection points, stop the machine immediately and perform a thorough inspection; resume operation only after identifying and resolving the issue. In harsh operating environments, it is especially important to ensure the cleanliness of the process fluid; foreign particles entering the pump can quickly scratch precision components, leading to irreversible damage.

Routine maintenance does not require complex disassembly; simply perform basic postoperation upkeep after each shift. Clean dust and grime from the pump housing, flush the internal piping to remove any residual fluid, and inspect seals and fittings for signs of aging or leakage. Filter elements should be cleaned regularly to prevent clogging that could impair liquid intake. Depending on the operating environment, periodically check the condition of the hydraulic fluid and replace it as needed. Seals are wearprone components; address any signs of aging or minor leaks promptly—do not wait until the issue escalates.

In addition to routine maintenance, periodic comprehensive inspections are also required. Inspect the internal valve assemblies and plunger components to assess wear conditions. In environments with high dust levels or highly corrosive media, the maintenance frequency should be appropriately increased. When the equipment is left idle for extended periods, drain all fluid from the pump chamber, apply appropriate antirust protection, seal all ports, and store the unit in a dry, wellventilated location to prevent corrosion and the ingress of foreign matter into the pump body.

Overall, the operation and maintenance of high-pressure plunger pumps hinge on prevention. Proper operating procedures combined with routine maintenance can effectively avert most common malfunctions, ensure stable equipment performance, reduce subsequent repair costs, and provide reliable power support for a wide range of industrial applications.