Common QGB cylinder fault judgment and maintenance skills

Excellent QGB cylinder with your hand tightly blocked pores, and then pull the piston shaft with the hand, when there is a lot of reverse force, when the piston will automatically back in situ; Pull out of the push rod and blocked pores, with the hand press also has a lot of reverse force, when push rod when the piston will automatically back in situ. Bad cylinder: there is no resistance when pull or force is small, put the piston movement or action to slow, continuous pull out with reverse force but slowly decreasing; Pressure when there is no pressure or stress is very small, there is pressure but the pressure is smaller. General magnetic switch is not easy to bad, but we often appear in the actual operation of the magnetic switch does not work, no signal output of the phenomenon, this is because the magnetic switch is changed the location of the installation, lead to the induction in the cylinder magnet, this requests us to check if it is often tighten. Using circlip pliers will QGB card at the end of the cylinder spring ( Screw) Off, remove the cylinder piston, piston top there will be a rubber band, general cylinder action, action is slow, or mixes up is due to the rubber band wear too much, will take out the rubber band and then new rubber mount, finally cylinder block to clean clean and make sure that the two inlet flow and to the inner wall of the cylinder body after all OK rub a small amount of pure butter and then at the end of the cylinder, spring loaded, generally after such repair, prolongs the service life of the cylinder one year to two years.