Sekisui House Sha-Maison malfunction Unlocking the front door

"I have a key, but it doesn't turn."

It is a fashionable maisonette type property near the coast.It feels like a detached house.

Since salt damage has a large impact, proceed with cleaning work carefully.This time it was the OPNUS cylinder.

(I couldn't tell from Google photos, but was it SEKISUI House?)

If you check the degree of corrosion after unlocking, it is a considerable degree of progress.Corrosion of the stainless steel material of the dead bolt to this extent is the power of terrifyingly powerful salt damage.

The rest is the obligatory pattern thumbturn.If you have a door scope, there is no problem, but unfortunately the only way to unlock it is cylinder breaking and unlocking.

It is an OEM specification of SEKISUI/WEST that locks are linked up and down, but unlocking is not linked.

To unlock the door, you have to use a special half-moon-shaped thumbturn, which is quite difficult.