Mini spray gun manufacturers tell you to make sure that all pipelines of the air spray guns are connected before use (the ground wire on the electrostatic generator should be connected); Secondly, put the oil suction pipe of the oil pump into the prepared paint (the oil return pipe should be closed). Open the air pressure on the oil pump to about 3Mpa; Then open the ball valve connecting the white oil pipe of air spray guns to the oil pump (after opening). Now the paint is on the spray gun; Then, adjust the air pressure of the ball valve (open) on the pressure regulating gauge beside the electrostatic generator to 6Mpa (if you feel that the air pressure of the spray gun is too high during the spraying process, you can use the blue button on the side of the spray gun to reduce it). After opening both the oil and gas of the spray gun, install the nozzle of the spray gun to adjust the atomization (make sure that the atomization, oil volume and air pressure of the spray gun are properly adjusted); Finally, turn on the power supply of the electrostatic generator (adjust the static electricity to 60kv), pull the trigger and see that the display is normal.