9.Motor maintenance.
According to the motor instructions for maintenance.
8. drive belt.
To adjust the https://www.ever-power.net/?s=laser+cutting+air+compressor&post_type=product amount of tightness every 2000 hours, every 4000 hours to check on the deterioration, according to deterioration decide whether or not to replace.
7, safety valve.
Every 4000 hours to check if the action is sensitive.
6.Pressure valve.
Clean every 4000 hours, and check if the opening pressure is regular.
because for oil-surroundings compressors, the oil-drinking water separator function: separates the oil from the dampness in the surroundings and therefore accumulates over an extended period of time and will affect the filtration efficiency without the need to displace or clean the oil-water 
separator
5, coal and oil separator.
Every 4000 hours have to replaced a new piece.
Otherwise the oil will make a influence of the cutting effect
4.oil filter.
Every 2000 hours to displace a new piece.
Every 1000 hours want check oil content nonetheless it want to replace the new oil after 4000 hours