LIXIL "Lijerovα" fire door main lock cylinder PR.QDJ-695 cylinder breaking and unlocking

"I was trapped because I couldn't go out because my thumbturn didn't turn around from the room."

It is a relatively new property that was built 3 years ago. I thought it would be a bad installation by the contractor due to the positional relationship with the strike. However, the problem was not so simple.

LIXIL "Lijerovα" fire door, PR.QDJ-695 + PR.QDJ-696 with two identical cylinders.

The apartment has three floors. The subject is the room on the 3rd floor. Therefore, try to unlock it from the outside with the key. There is no door post, so I will get the key from the client, but he threw it from the balcony on the 3rd floor.

However, I operate the cylinder with the key, but it does not move at all. I have experienced this kind of phenomenon before.

As you can see from the shape of the handle, QDJ-695 made by USHIN-SHOWA is attached. This is caused by a defective part of the lock case. This is because the cam part is completely interfering with the sickle deadbolt and is caught and fixed. There are cases where the sickle deadbolt is operated from the gap to release the fixation, but the situation did not change in any way.

After all, I was able to unlock by operating the cam part directly by breaking the cylinder. The lock of the cam parts must have been released due to the vibration when breaking the lock with a 22mm hole saw.

It seems that the management company will arrange the replacement of each part. Since it is a recurring problem, I would like you to replace it with a new one.