9.Motor maintenance.
Based on the motor instructions for maintenance.
8. drive belt.
To adjust the degree of tightness every 2000 hours, every 4000 hours to check on the wear and tear, according to wear and tear decide whether to replace.
7, safety valve.
Every 4000 hours to check on if the action is sensitive.
6.Pressure valve.
Clean every 4000 hours, and check if the opening pressure is normal.
because for oil-air flow compressors, the oil-drinking water separator function: separates the essential oil from the wetness in the air and therefore accumulates over a long period of period and will affect the filtration https://www.ever-power.net/?s=laser+cutting+air+compressor&post_type=product efficiency without the need to replace or clean the oil-water separator
5, oil and gas separator.
Every 4000 hours need to replaced a new piece.
Otherwise the oil can make a influence of the cutting effect
4.oil filter.
Every 2000 hours to replace a new piece.
Every 1000 hours need check oil content however it want to 
replace the brand new oil after 4000 hours