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Maintenance and Replacement Specifications: Regular Calibration: According to industry standards, safety valves need to be calibrated by professional institutions on a regular basis (typically once a year) to ensure accurate pressure setting and reliable operation; Replacement Timing: If there is valve body leakage, malfunction, or if the calibration is不合格， the original factory safety valve must be replaced immediately. Do not attempt to adjust or repair it yourself； Installation Considerations： During replacement， ensure that the system is depressurized， the installation direction is correct (usually the valve body has a medium flow direction arrow)， the interface is well sealed， and do not install it in reverse or block the exhaust port.

Fault and Replacement Suggestions: If the check valve experiences leakage, sticking, or fails to close completely, it may result in decreased system pressure, increased energy consumption, or reverse rotation of the main unit. Suggestion: Regularly check the sealing performance of the valves (this can be determined through pressure retention tests); When a fault is detected, replace the entire original equipment set (instead of just replacing individual components) to ensure the compatibility of all components; When replacing, clean the pipe interface, tighten according to the specified torque, and avoid leakage caused by improper installation.

Replacement and Maintenance Precautions: If cracks, deformations, damage to the sealing parts, or worn-out connection threads occur on the shell, it must be replaced immediately. Otherwise, unfiltered air will directly enter the main unit, causing wear and tear on components such as rotors and bearings. During daily maintenance, it is necessary to check whether the seal between the shell and the filter element is intact, and clean the dust and impurities inside the shell (especially when replacing the filter element). When installing a new shell, ensure that the sealing ring is installed properly, and tighten the connecting bolts according to the specified torque to avoid air leakage or damage to the shell due to vibration.

The risks of avoiding the use of non-original parts: Non-original filters may have insufficient filtration accuracy and poor material temperature and pressure resistance, which can lead to: Unfiltered impurities entering the main unit, causing wear on the rotor and bearings, increasing maintenance costs; Filter paper falling off and blocking the oil passage, causing abnormal oil pressure and even equipment shutdown; Incompatible sealing rings leading to oil leakage, resulting in oil loss and environmental pollution.

Replacement and Maintenance Suggestions: When the bushing shows excessive wear, scratches, cracks, or if the clearance between the bushing and the shaft exceeds the limit, it should be replaced immediately. Otherwise, it may cause wear on the shaft neck, increased vibration, or abnormal noise from the equipment. When replacing, use original factory parts and ensure that the surface of the shaft and the bearing housing are cleaned before installation. If necessary, perform size checks according to the manual requirements. During installation, avoid knocking the bushing to cause deformation. If necessary, use professional techniques such as hot assembly to ensure the mating accuracy.

Replacement and Maintenance Suggestions: When the shaft sleeve shows excessive wear, scratches, cracks, or if the fit with the shaft exceeds the limit, it should be replaced immediately; otherwise, it may cause wear on the shaft neck, increased vibration, or abnormal noise from the equipment. When replacing, use original factory parts and ensure that the surface of the shaft and the bearing housing are cleaned before installation. If necessary, perform size checks according to the manual requirements. During installation, avoid knocking the shaft sleeve to cause deformation. If necessary, use professional techniques such as hot assembly to ensure the fit accuracy.