Door closers play a very important role in the fire protection monitoring system, so we should pay attention to daily inspection and maintenance of the door closers in normal times to ensure that the door closers can play a good role in fire protection and life-saving in emergencies.
For newly installed fire door closers, after about 7-10 days of use, all screws should be checked, and all screws should be tightened again to prevent the screws from loosening.
Then in the subsequent use, the door closers should be checked regularly, mainly checking the following places:
1. Check whether the installed screws are loose or missing
2. Check whether the connecting arm of the door closer is rubbing against the door body or frame
3. Check whether the fire door body is deformed or loose
4. Check the buffer of closing the door
5. Check for oil leakage at the gear shaft of the door closer
