The maintenance cycle for the screw compressor and barrel is typically 5000-8000 operating hours. Regular checks are required to monitor the screw-barrel clearance (standard clearance 0.1-0.3mm), heating coil resistance, and cooling water flow. Common faults include:
Decreased output: This may be caused by screw wear, damaged heating coils, or clogged filters. Check the screw surface wear (replace if exceeding 0.5mm) and clean the filters.
Material decomposition: This is often due to temperature control failure or excessive screw shearing. Reset the temperature profile and optimize the screw structure.
Abnormal noise: This may be caused by bearing damage or friction between the screw and barrel. Immediately stop the machine, inspect, and replace the bearings.
