Lubricated rotary screw air compressors mix oil with the intake
air to lubricate the compressor's screws. After the air is
compressed an air/oil separator separates compressed air from
compressor oil. The compressor lubricant collects at the bottom of
the separator tank and the compressed air continues to the air
receiver. A standard rotary screw separator reduces the lubricant
entrained in the compressed air to 2-3 ppm. Under normal operating
conditions an oil separator's service life is 4,000 to 6,000
operating hours.