How long does the new screw air compressor use for oil change?

The replacement cycle of the lubricating oil of the new screw air compressor is affected by the type of lubricating oil, the working environment and the frequency of use. The following is a detailed guide:

1. first oil change cycle

• new machine running-in period: It is recommended to run 500 hours after the first oil change, to remove the metal debris and impurities generated by the initial running-in.

2. routine oil change cycle

1. lubricating oil type:
   • mineral oil: Replace every 2000-3000 hours.
   • semi-synthetic oil: Replace every 3000-4000 hours.
   • fully synthetic oil: Replace every 4000-8000 hours.
2. Working environment:
   • harsh environment(High temperature, high humidity, high dust):
     • when the humidity is more than 60%, the lubricating oil is easy to emulsify, and the oil change period should be shortened to every 1500-2000 hours.
     • Dust environment need to strengthen the air filter maintenance, to avoid dust accelerated lubricating oil pollution.
   • clean environment:
     • it can be replaced according to the standard cycle, but the maximum time limit recommended by the lubricant manufacturer is not exceeded.
3. Frequency of use:
   • high frequency use(> 8 hours per day):
     • replace every 2000 hours.
     • If the annual operation time is> 4000 hours, it is recommended to check the quality of lubricating oil every 6 months.
   • low frequency use(<4 hours per day):
     • replace every 3000 hours or once a year (whichever comes first).
     • Avoid performance degradation caused by long-term standing of lubricating oil.

3. oil change signal identification

1. oil color change:
   • the new oil is transparent golden yellow, if it turns dark brown or black, it needs to be replaced immediately.
2. Oil quality detection:
   • use a lubricating oil analyzer to check the acid value, viscosity, and moisture content. If acid value> 2.0 mgKOH/g or moisture> 100 ppm, oil change is required.

4. oil change operation steps

1. preheating:
   • start the air compressor to run for 5 minutes, so that the oil temperature rose to more than 50 degrees Celsius, reduce the viscosity to facilitate the discharge.
2. Drain the old oil:
   • close the air compressor and wait for 5 minutes for the lubricant to settle.
   • Open the drain valve to completely drain the old oil.
3. Replace filter element:
   • at the same time, replace the oil filter and the filter element of the oil and gas separator to prevent the residual old oil from polluting the new oil.
4. Fill in new oil:
   • observe through the oil level mirror and fill between the two red lines of the oil level gauge.
5. Commissioning:
   • start the air compressor, check for oil leakage, and observe whether the oil pressure is normal.

5. methods to extend the life of lubricating oil

1. environmental Control:
   • install an intake pre-filter to reduce dust ingress.
   • Keep the temperature of the machine room at 5-35 ℃ to reduce the oxidation rate of lubricating oil.
2. Normative operation:
   • avoid long-term overload operation and reduce high temperature deterioration of lubricating oil.
3. Regular inspection:
   • check the oil level and quality every month, and take samples every quarter.

Summary: The replacement of lubricating oil for the new screw air compressor needs to be flexibly adjusted in combination with the working conditions of the equipment. In harsh environments, it is recommended to shorten the oil change cycle by 30%-50%, and use high-quality synthetic oil to improve equipment life. Regular inspection of oil quality and standardized operation can extend the service life of lubricating oil and reduce maintenance costs.