July 2021
Glass door unlocked nursery back door
``The main gate with the electric lock won't open.The door won't open either, so I want you to open it.''Does the fact that the gate won't open mean that you can't open it even if you climb over it? It is said that if the gate does not open, the entrance door will not open either. What on earth does that mean? Unknown part […]
Elementary school rooftop exit U9.HMD unlocked
``I want you to open the door on the roof where I lost my key.'' This request came from a construction company that was apparently working on an elementary school's air conditioning system. When I look at it, it looks like a U9.HMD. The power supply is 200VAC for construction purposes. 100VAC is likely to reach unless extended […]
For hydraulic unlocking, MIWA KW-5NDZ-1 Cylinder replacement
``Store service door cylinder replacement due to theft and loss'' Target locations are service doors of major dealers. When I looked at it, it was a firefighting type NDZ. I forgot what the structure was like. It seems like there are some restrictions. Check the structure while disassembling it. […]
U-Shin Showa Sliding Door Lock KHW Readjustment
``The lock is loose and difficult to lock.'' This is a request for an inspection. The site is a detached rental property that we moved into three months ago. Even though he paid for the lock to be replaced, he says he gets frustrated because sometimes he won't be able to lock the door. When I checked the movement, it was working without any problems. For now […]
Store unlock with key ALPHA570
``I have the key, but the door won't open.'' The problem apparently occurred on the morning of a holiday when he came to the store as usual to prepare for a customer who had a reservation. The entrance door of the massage parlor is neat and clean. Apparently the store had delayed its opening by an hour and was waiting for the locksmith. There is only one key, and the key […]
