If you are unable to access the property then it is likely that this upvc door lock has a split spindle operation.
Split spindle upvc door lock.
The split spindle allows door locks with in built split spindle mechanisms to operate.
Changing upvc door lock from split to single spindle.
Please see technical drawing third image to confirm measurements of the back set.
I have done some research and just need some.
This is visually the same as the lever handle with a lever handle inside and out the difference being the handles are independent of each other.
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8 jan 2013 messages.
Discussion in windows and doors started by kbdiy 2 may 2013.
Access can only be gained from the outside by key even if the door is unlocked.
This feature is sometimes referred to as a dual spindle operation and also a night latch function.
Pera upvc door lock gearbox can only be used in single spindle mode can be opened from inside and outside and split spindle cannot be opened from the outside operation.
This handy how to video gives clear step by step instructions on how to install a split spindal.
This means that the outside handle does operate the latching bolt and therefore when the door is closed and the hook bolts have not been engaged and locked off with the key someone can walk up to the door push the handle down and open the door.
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Therefore only known key holders can enter the property once the door is closed even without dead locking the system.
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Have not had much to do with multipoint door locks so looking for some guidance please.
The spindle allows the external handle of the door to operate the lock mechanism however it prevents the latch operating unless you use the door cylinder key.
For more handy how to videos from door stop visit https.