Common faults in the hydraulic system include issues related to oil quality and temperature, mechanical failures, and system leaks. These problems can lead to reduced efficiency, damage to components, and operational disruptions.
Oil Quality and Temperature Issues: Hydraulic systems rely on specific types of oils, such as 20# mechanical oil or 32# hydraulic oil, which must be carefully filtered to prevent contamination. Contaminated oil can lead to poor lubrication and increased wear of moving parts. Additionally, hydraulic fluid is sensitive to high temperatures, and the temperature should not exceed 50 degrees Celsius. Exceeding this temperature can degrade the oil, leading to reduced system performance and potential damage.
Mechanical Failures: Mechanical failures in hydraulic systems can manifest as abnormal noises, which indicate that the system should be stopped immediately for inspection. These noises might be due to issues like trapped dirt in the intake, clogged exhaust filters, or malfunctioning valves. For example, if the pressure rises too fast when the pump is switched off under vacuum, it could indicate a leak or a malfunctioning anti-suck-back valve.
System Leaks: Leaks in the hydraulic system can occur at pipe joints or due to loose fittings, leading to oil leakage and contamination. These leaks can reduce system pressure, affecting the efficiency of hydraulic machinery. Additionally, back pressure on the pump due to blocked discharge outlets can reduce pump efficiency and cause internal damage.
Maintenance and Inspection: Regular maintenance and inspection are crucial to prevent and detect these faults. This includes checking lubrication, maintaining cleanliness of all parts, and ensuring proper temperature control of components like the hot plate. Conducting regular inspections can help identify leaks in the system, including in equipment and related accessories such as downstream and upstream piping.
By addressing these common faults through careful maintenance and timely inspections, the performance and longevity of hydraulic systems can be significantly improved.
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