How to adjust the guide of security door

First, draw a line on the door frame or position it with adhesive tape, then fix the hole with rivets, and flatten the rivets slightly with a hammer after fixing. If the guide vane is blocked, it can be polished by machine.

Measure the thickness of the door and compare it with the length of square steel and anti-lock iron sheet. If you need to cut, use an angle grinder to cut and round after cutting. Then insert the square steel into the lock core, take out the fingerprint lock, and adjust the direction of the handle and the reversing arrow.

Finally, screw on the sleeve and reinforce it with a vise, put a rubber pad on the door, fix the front panel with a fixer or someone else and straighten it.