The oil-free air compressor is a miniature reciprocating piston compressor. When the crankshaft rotates, the motor is driven by a connecting rod. The piston with self-lubrication without adding any lubricant reciprocates from the inner wall of the cylinder. The working volume formed by the cylinder head and the top surface of the piston changes periodically. When the piston of the piston compressor starts to move from the cylinder head, the working volume in the cylinder gradually increases. At this time, the gas moves along the intake pipe and pushes the intake valve into the cylinder until the working volume becomes maximum. The intake valve is closed; when the piston of the piston compressor moves in the reverse direction, the working volume in the cylinder is reduced, and the gas pressure is increased. When the pressure in the cylinder reaches and is slightly higher than the exhaust pressure, the exhaust valve is opened, and the gas is discharged from the cylinder. The exhaust valve closes until the piston moves to the extreme position. The above process occurs repeatedly when the piston of the piston compressor moves in the opposite direction. That is, the crankshaft of the piston compressor rotates once, the piston reciprocates once, and the process of intake, compression, and exhaust is successively realized in the cylinder, that is, a working cycle is completed. The single-shaft, two-cylinder design allows the compressor gas flow to be twice that of a single cylinder at a given rated speed and is well controlled for vibration and noise control.
1. When the compressor is shut down due to power failure, in order to prevent the compressor from starting with pressure, the pressure switch should be pulled off when the compressor is turned on, the air in the pipeline is drained, and the compressor is restarted.
2. The user must set the compressor protection grounding wire to ensure good contact between all metal casings of the compressor and the earth. The grounding resistance should comply with national standards.
3. When the compressor finds serious air leak, abnormal noise and odor, stop running immediately, and find out the cause to solve the fault and return to normal before running again.
4. The air compressor is an oil-free air compressor, and the friction parts are self-lubricating, so do not add lubricating oil.
5. The air compressor must be fixed on a ventilated, stable and sturdy work surface. To reduce noise and vibration, a shock absorber must be provided.
6. The filter medium (foam sponge or felt) in the filter should be cleaned every three months to blow off the dust on the medium. If necessary, wash it with water, dry it and use it again.
7. The compressor should be maintained at least once a quarter. The maintenance includes thoroughly removing the dust and dirt from the compressor, checking and tightening the connecting bolts around the compressor, whether the grounding wire is intact, and checking the electrical circuit for aging damage.