First maintenance time of screw air compressor

The first maintenance time of screw air compressor is usually running 500 hours this is based on a comprehensive consideration of the equipment run-in period and maintenance specifications. The following are detailed basis and maintenance recommendations:

1. the core basis for the first maintenance

1. equipment running-in requirements
   within 500 hours of the initial operation of the newly purchased machine, the internal parts (such as bearings and gears) are in the running-in stage, and the metal debris generated by the initial wear and tear shall be removed through maintenance to avoid secondary damage to the equipment.

2. Lubricating oil life cycle
   after the initial start of the equipment, the original lubricating oil is affected by the high temperature and high pressure environment, and its oxidation resistance and lubrication performance will gradually decrease. 500 hours is the critical value of lubricating oil performance degradation, which needs to be replaced in time to ensure compression efficiency and equipment stability.

3. Industry Standard Reference
   most manufacturers (such as Atlas Copco and Ingersoll Rand) use 500 hours as the first maintenance node, which meets the requirements of GB/T 3811-2008 "Safety Specification for Compressor Air Handling Equipment" for initial maintenance of equipment.

The key content of the first maintenance of the 2.

1. Lubricating oil replacement
   • oil selection: Need to use air compressor special lubricating oil (such as ISO VG 68), its high flash point, strong oxidation resistance, can adapt to high temperature conditions.
   • Replacement amount: Add according to the scale of the oil scale to avoid excessive or insufficient.
2. Oil Filter Replacement
   • role: The oil filter can intercept metal particles and impurities in the lubricating oil and prevent them from entering the compression chamber.
   • Replacement standard: The original filter element is used, and its filtration accuracy (usually 10-20μm) can match the equipment requirements.
3. Air filter element cleaning
   • operation Specification: Purge with low pressure compressed air below 0.2MPa from inside to outside to avoid deformation or damage of filter element.
   • Replacement conditions: If the filter element is damaged or blocked (pressure difference> 0.05MPa), it needs to be replaced immediately.
4. Equipment inspection
   • leak Detection: Check whether there is air leakage on the pipe joint and flange sealing surface.
   • Temperature monitoring: Confirm that the exhaust temperature is ≤ ambient temperature +35 ℃ to prevent overheat protection shutdown.

3. Subsequent Maintenance Cycle Recommendations

1. minor maintenance (every 2000 hours)
   • replace the lubricating oil and filter.
   • Clean the air filter element.
   • Check the action and lubrication of the intake valve.
2. Major maintenance (every 3000 hours)
   • replace the air filter element and oil/gas separator core.
   • Clean the cooler and check the pressure maintenance valve.
   • Fill the motor with grease.

4. special environment adjustment strategy

• high dust environment: It is recommended to shorten the maintenance cycle by 30%, that is, the first maintenance should be advanced to 350 hours, and the subsequent minor maintenance should be carried out every 1400 hours.
• high temperature and high humidity environment: It is necessary to increase the frequency of condensate discharge (once a day) to prevent emulsification of lubricating oil.
• Low frequency usage scenario if the average monthly operation of the equipment is less than 50 hours, no-load operation (30 minutes) and maintenance shall be carried out every 6 months to avoid lubricating oil solidification.

Summary

the first maintenance time of screw air compressor is based on 500 hours of operation. The replacement of lubricating oil and oil filter shall be strictly carried out, and the basic inspection of equipment shall be carried out at the same time. Follow-up maintenance needs to be dynamically adjusted in combination with working conditions. It is recommended to establish equipment maintenance files to record maintenance time, oil batches and testing data to ensure stable operation of the equipment throughout its life cycle.