Unlocking and replacing Opnus (OPNUS) MMX-2 cylinder by breaking, Daito Kentaku Property

"Lost key, Unlocking the entrance door"

At the time of the request, it was unclear if there was a door scope. I searched on Google and found no photos.

This time was also a police witness case.

When I arrived and checked the door, there was no door scope.Moreover, it is an OPNUS cylinder.The lock case looked like a USHIN-SHOWA, so it was a large normal thumbturn.

Plan A

We will proceed with the work as a special unlocking method.However, this newly built property had a specially shaped silicone rubber applied to the door frame as a measure against fire doors. It is a "U" shape.

Once again, I was blocked by this silicone rubber.After all, I worked for about 20 minutes, but gave up.

The issue was how to understand the material and shape of rubber.

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Plan B

Crescent unlocking with a sweep-out window about 2 meters high.It is locked by the slide switch, so it will take some time.It seems that the tool can be inserted, but the sweep-out window for the apartment is as narrow as 60 cm (total width 1200), so it interfered with the window frame.This will break the tool.I also gave up on this.

Plan C

Cylinder unlocking work.Normally, it takes time to approve the unlocking of the rental property and it will be canceled, but in the case of the Daito Trust Construction property, if the current situation at the time of moving out is restored, the unlocking is okay.The cost of double is high, but the client himself decided this way.

By replacing it with U9.LSP, we proceeded with the unlocking work. OPNUS is robust.Drilling and filing are difficult, but the defense against hole saws is surprisingly weak, and the cylinder core can be removed in a short time.

I was able to take out the core in a short time with a hole saw again this time.As usual, the OPNUS core cylinder is large.Therefore, the pull-leg screws are M4 exclusive screws.

It was unlocked soon and the cylinder was also replaced with U9.LSP and completed.However, care must be taken when replacing. For pull-leg screws, you'll need a generic 50mm M5 screw.

Until now, there had been almost no OPNUS unlocking work at rental properties, but it was the first time in a long time.