Does the screw air compressor need to be changed for the first maintenance?

Whether the oil core needs to be replaced for the first maintenance of the screw air compressor shall be comprehensively judged according to the following specifications:

1. Manufacturer's Standards

1. industry Routine
   most brands stipulate: for the first maintenance (500 hours), the lubricating oil, oil filter and air filter need to be replaced, but the oil core is usually not covered by the first maintenance.. Its design life is generally 2000-4000 hours.

2. Exceptions
   some compact screw machines (such as power ≤ 15kW) may require the first guarantee to replace the oil core synchronously, and the instructions shall be strictly followed.

2. Key Judgment Basis

1. oil differential pressure sensor data
   if the air compressor is equipped with a differential pressure sensor, when the oil differential pressure is ≥ 0.15bar, it needs to be replaced in advance (even if the first warranty time is not reached).

2. Use environmental assessment

   • severe conditions(High temperature, high humidity, much dust): It is recommended to replace the oil core for the first time, and the glass fiber filter material will be blocked due to impurities.
   • General Environment: According to the standard, the first warranty does not need to be replaced.

3. operation recommendations

1. required Items
   • replace lubricating oil (for the first guarantee, the old oil shall be completely drained, and the filling amount error shall be less than ± 1%)
   • replace the oil filter (note that the seal ring needs to be lubricated with oil)
   • clean the intake valve (to avoid carbon deposits affecting the loading efficiency)
2. OPTIONAL CHECK
   • dismantle and inspect the end cap of the oil separation core, and observe whether the glass fiber layer is discolored (normally white, but it needs to be replaced if it turns black).
   • Detection of oil content (using oil tester, the export oil content should be <3ppm)

4. cost optimization strategy

• prolong oil life: Add a pre-filter (filtration accuracy ≤ 1μm) to reduce the oil load by 30%.
• Oil selection: Use synthetic oil (oxidation stability is 5 times higher than mineral oil) to reduce the pollution of carbon deposits on the oil core.

It is recommended to query the operation data through the air compressor control panel, or contact the original factory service to obtain LCC (life cycle cost) analysis report, and accurately formulate the maintenance plan.