ALPHA Model number unknown ALPHA automatic locking type unlocking

"Unlocking automatic lock by non-carrying"

The site is on the XNUMXth floor of an apartment building!There is no elevator ...!There is no choice but to climb the stairs.

I didn't carry the key with me, and when I closed the door, it was locked.She seems to have always been careful, but she "has done it," her client said.It looks too old and its structure is unknown.It was the first one.I can't even find the model number even if I look it up later.

It looks like a toilet lock
Automatic lock made by ALPHA (upper numeric keypad inoperable state)

I had a special tool in the work vehicle, so I tried normal thumbturn unlocking from the door scope without picking.However, it does not turn even with 3 shots.will not open. (Hmm?)

In the end, I found that I needed to hold the thumbturn in the unlocked position.If it comes off, it will return to the locked position (vertical position) with the automatic return function.Now for the change of tools.

Change to a special tip tool, but the target slips small.It is difficult to hold it in the unlocked position.On the way, I added one or two non-slip pads to the jig.I did it several times and pulled the lever saying "Now!" To complete the unlocking.

Thumbturn does not return to the locked position when the trigger is free.
The spring force when returning when the trigger is ON is quite strong.
After all, the model number remains unknown

ALPHA lock that looks like a toilet lock.He was a very difficult guy.

At the reflection meeting, we considered another tip jig pattern and a pattern to put in a SUS shutter when the latch bolt was pulled in.It seems that both can be done with a normal opener.