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Replacement and Maintenance Precautions If you find that the return oil pipe has corrosion perforations, damaged interface threads, deformed pipes, or leaks, it must be replaced immediately; otherwise, it will cause oil loss, insufficient lubrication, and lead to wear of the main engine. When replacing, it is necessary to use the original factory metal return oil pipe to ensure that the size, interface are consistent with the original components, and avoid installation difficulties or leakage due to mismatch issues. During installation, check whether the sealing parts (gaskets, O-rings) are in good condition. If necessary, replace them simultaneously; when tightening the interface, operate according to the specified torque to prevent excessive tightness from causing thread damage or insufficient tightness that leads to leakage.

Faults and Maintenance Suggestions Common Problems and Solutions: Poor or blocked drainage: This is often caused by accumulated impurities. You can disassemble the valve body to clean the filter screen. In severe cases, the original valve needs to be replaced. Valve always closed or always open: This may be due to a fault in the electromagnetic valve coil or damage to the controller. You need to check the circuit and replace the corresponding components. Leakage: Caused by aging seals. It is recommended to directly replace the entire drainage valve (the original kit includes all seals). During maintenance, it is necessary to regularly (every 3 months) check if the wiring is loose, clean the drainage outlet, ensure that the winter environmental temperature is not lower than 0℃, and prevent freezing and cracking.

Replacement and Maintenance Recommendations: Replacement Cycle: Generally, replace the filter every 1,000 - 2,000 hours or 6 months (whichever comes first). In environments with high dust concentration (such as mines, cement plants), this period should be shortened to 500 - 800 hours. Replacement Indicators: If the intake resistance becomes excessively high (over 100 - 150 mbar, which can be observed through a pressure gauge), if the compressor's exhaust volume decreases, or if there is abnormal noise from the main unit, it is necessary to immediately check and replace it. Maintenance Tips: During daily maintenance, the filter element can be removed. Use compressed air to blow off the surface dust from the inside out (pressure ≤ 5 bar), but do not wash it with water; during replacement, clean the interior of the filter housing to ensure there are no residual impurities.

Fault and Replacement Suggestions: If the fuel injection valve becomes clogged, stuck, or leaks, it may cause the following issues: Insufficient fuel injection: Poor lubrication of the main engine, increased temperature, leading to rotor wear or abnormal noise; Excessive fuel injection: Increased oil content in the compressed air, heavier load on the oil separator, and increased energy consumption; Uneven fuel injection: Insufficient lubrication in some parts of the rotor, resulting in uneven wear or overheating. Suggestions: During daily maintenance, check if there is any oil accumulation on the fuel injection valve and clean the filter regularly (if applicable); When encountering abnormal engine temperature, increased fuel consumption, or abnormal noise, promptly inspect the condition of the fuel injection valve;

Faults and Replacement Suggestions: Common Faults and Handling: Contact Erosion: Manifested as poor contactor engagement, severe overheating, or failure of the main circuit. Replace the contactor to prevent the motor from operating without phases; Winding Burnout: Usually caused by abnormal voltage or winding aging, resulting in the contactor unable to engage. Check the winding voltage and replace the original part; Stuck and Strange Noise: Caused by dirty iron core or failed spring. May lead to contact adhesion. Replace immediately to prevent the equipment from losing control. When replacing, please note: Power off and confirm that the main circuit voltage has been disconnected. When connecting, distinguish between the main contact (high-power circuit) and the auxiliary contact (control circuit). Secure the connection terminals to prevent loosening and overheating.

Faults and Replacement Suggestions: Common Faults and Handling: Winding Burnout: Usually caused by abnormal voltage or long-term overloading, manifested as the electromagnetic valve not moving. It is recommended to replace the entire electromagnetic valve (including the winding); Valve Core Stuck: Caused by impurities or oil contamination, preventing the valve from fully opening or closing, which may lead to abnormal pressure or poor drainage. It is necessary to replace the original part; Leakage: Caused by aging of the sealing components, it is necessary to replace in time to avoid loss of compressed air or engine oil. When replacing, please note: Power off operation, confirm that the voltage specification is consistent, and when installing, the sealing component should be coated with a small amount of engine oil to enhance the sealing performance.