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Well I have had a new fireproof door and frame fitted, there seem to be the most pointless locking points. The catches come out when the door is closed, and open on opening that handle. There is no lift the handle to double or dead lock.
Will photograph and see what you guy think.
lynx-
Is it this lock?
https://www.fullex-locks.com/fullex-fire-door-slam-shut-autolock/If so, it's effectively lifting the handle every time the door closes and automatically throwing the top and bottom bolts.
Turning the key/cylinder throws the central Deadbolt and blocks the operation of the handles, like a common lift lever multipoint lock
user69121
As @ElephantBreath said, if the cylinder is gritty and rough to turn the key, graphite is recommended for lubricating it, but flush out with something that's not going to set, or collect more muck in the future.
Exactly. If you remove a short M4 machine screw from the handle area or next to a hook, put it back in.
If your mechanism has screws holding the gearboxes onto the face plate, leave them in place and remove the complete strip as one. If after cleaning and lube, it's still poor, remove the centre gearbox and see if its the centre or hook gearboxes. If its the centre, you can get replacements for some, but not all.
Here's an
Top. Avocet mechanisms with the gearbox rivitted on.
Middle. ERA mechanism with gearbox screwed on
Bottom. ERA gearbox.