MIWA PR.QDJ695, unlocked malfunction repair with key

"I have the key, but the door doesn't open."

The witness was a person with a Niigata license plate. Although he did not go into details about his relationship with the resident, he did say that the lock would not turn. Since it turns in the locking direction, you can tell that it is the correct key set. However, it did not turn at all in the unlocking direction.

I patiently spray-cleaned it, and after letting it soak in, I turned it with a little force and it finally spun.

This property is close to the coast, 30 meters away. Part of the cylinder (locking bar) may have become stuck due to salt damage. Although this is a rare cause, the locking bar may not move depending on the direction in which it is turned. This can be improved by disassembling the cylinder core and cleaning it, but this time I just spray cleaned it and checked the situation and completed the work.