@ggao
2025-03-12

How is the “oil-free water lubrication” technology applied in this compressor?

Answer: The compressor uses water instead of oil to lubricate the screw elements, eliminating the risk of oil contamination in the compressed air.

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@ggao
2025-03-12

How can it be determined whether the water filter of the GWL Series compressor needs to be replaced?

Answer: It can be determined by observing the pressure differential indicator of the water filter or based on usage time and water quality.

@air
2025-04-15

In the ISO 8573-1:2010 standard, what is the dew point temperature requirement for compressed air for spraying?

A.≤0℃ B.≤-10℃ C.≤-20℃ D.≤-30℃ Answer: C Analysis: The spraying process requires a compressed air dew point of ≤-20℃ (PDP) to prevent moisture condensation from affecting the coating quality.

@air
2025-04-15

What are the types of piston air compressors classified according to the exhaust pressure?

A. Low pressure air compressor, medium pressure air compressor, high pressure air compressor B. Micro air compressor, small air compressor, medium air compressor C. Silent air compressor, portable air compressor, medical air compressor D. Piston air compressor, screw air compressor…

@air
2025-04-15

6. For every 1000 meters increase in altitude, the air density drops by about?

A. 5% B. 11% C. 20% D. 30% answer: B Analysis: For every 1000 meters increase in altitude, the air density drops by about 11%.

@air
2025-04-15

What are the characteristics of air compressors in terms of energy-saving technology?

A. Backwardness of energy-saving technology B. Advanced energy-saving technology C. Don’t pay attention to energy-saving technologies D. General answer to energy-saving technology: B. Advanced energy-saving technology