In addition to helping the fire door close automatically, the door closer can also control the door closing range, allowing the fire door to close at a certain time and strength to prevent people from being trapped when using the fire door. But in our ordinary life, we will find that many fire doors or anti-theft doors with door closers close very quickly and the sound is very loud at the same time. What is the reason for this?
If the fire door or the anti-theft door with the door closer closes quickly and loudly, we must first check whether the door closer is leaking oil. If oil leaks are found, it means that the door closer has been damaged. , The door closer must be replaced; if no oil leakage is found, then we need to check whether the speed valve adjustment of the door closer is not adjusted correctly. If the force is too large, the door closes too fast. At this time, we can use a screwdriver to adjust the closing The closing force of the door closer should be controlled within an appropriate range, so that there will be no too much noise when the door closer closes, and the closing speed will not be too fast.