How to confirm whether it is an oil-free air compressor

Confirm whether it is an oil-free air compressor, which can be judged by the following aspects:

1. Appearance Features

1. check fuel tank: The machine shell of the oil-free air compressor usually does not have an oil tank, the appearance of the whole machine is relatively simple, and the number of oil pipes is limited. If there is an obvious oil tank or a large number of oil pipes on the appearance of the air compressor, it is probably not an oil-free air compressor.
2. Observe lubrication equipment: Oil-free air compressor has no equipment for introducing lubricating oil film on the machine. If the air compressor has equipment or systems related to lubricating oil, it may not be an oil-free air compressor.

2. running noise

during operation, the oil-free air compressor is usually relatively quiet and has relatively low operating noise. This is because the oil-free air compressor does not need to use lubricating oil, avoiding the noise caused by poor lubrication conditions. If the air compressor has a loud noise during operation, it may not be an oil-free air compressor.

3. exhaust port odor

oil-free air compressors do not need to use lubricating oil during operation, so the odor generated at the exhaust port will be different from that of traditional oil-filled air compressors. The air discharged from the oil-free air compressor is usually clean and tasteless, while the air discharged from the oil-filled air compressor will have a certain lubricant smell. If you smell oil in the exhaust port, the air compressor is probably not an oil-free air compressor.

4. Performance Verification

in order to further confirm whether the air compressor is an oil-free air compressor, performance verification can be carried out. Specific methods include:

1. gas source oil test: Place a piece of dry and clean white filter paper at a certain distance (such as 5cm) from the exhaust pipe of the air compressor, turn on the switch for a period of time (such as 5 minutes), then remove the filter paper and put it into clear water to observe whether there are oil flowers. If there is no oil flower, it is confirmed as no oil.
2. dryness test: After the compressed air releases the pressure, the air compressor exhaust pipe gas into a sealed glass container containing anhydrous copper sulfate or discolored silica gel, and observe whether the white powdered anhydrous copper sulfate turns blue or blue silica gel turns pink after a certain period of time (such as 5 minutes). If there is no discoloration, it is proved to be a dry gas.

5. access to technical information and certification

check the technical data, instructions or certification certificate of the air compressor to find out whether it is oil-free design. Oil-free air compressors usually have a clear oil-free certification mark or instructions.

In summary, through the appearance characteristics, operating noise, exhaust odor, performance verification and access to technical information and certification and other aspects of comprehensive judgment, can be more accurately confirmed whether the oil-free air compressor.