Euro cylinder locks are the locks most commonly used on uPVC windows and doors which you push flat with your thumb to lock and open (either from the inside or externally) with a key. You will find them most frequently in conservatories or on internal office doors, and although mostly reliable and secure, you may need to change a euro cylinder lock should you have lost one set of keys or moved to a new house or office.
Replacement euro cylinder locks can be purchased from a local locksmith in London at reasonable cost and can be fitted quite easily. Things to remember when purchasing your new euro cylinder lock is that it has at least the same security grade as the one that you are replacing (Grade 2 for internal, grade 3 for medium security, grade 4 for high security) and that you get your local locksmith in London to cut an additional set of keys. If you are in any doubt about the instructions below and do not wish to compromise your future security, it is better to find a locksmith in London who will visit and fix your new locks for you.
To remove the old lock
Unlock and open the door or window
Locate and remove the cylinder fixing screw. This is normally a screw on the edge of the frame with a broad head which lies in line with the lower end of the cylinder.
Turn the key in the cylinder to bring the cam in line with the cylinder so you can pull it out. This has to be done by feel, but the normal angle of the turn is around 30 degrees – or to one o´clock. If the cylinder catches rather than comes out easily, turn the key in the other direction, so you have now got it at eleven o´clock and try again.
If it still fails to come out, it could be because the cylinder has been trapped by handles or other door furniture, and these may need a little loosening to free the cylinder.
To install the new lock
To install the replacement lock, follow the above process in reverse.
Slide in the new cylinder at the same angle as you removed the old one.
Turn the key or knob to the upright position.
Replace the cylinder fixing screw and you are back to being 100% protected again.
As mentioned above, if you are in any doubts about your confidence of replacing the euro cylinder lock securely (or get half way through and then start having doubts), please use the services of a local locksmith in London. They will be happy to give you a locksmith quote without any obligation and few pounds spent guaranteeing your safety may be far better than the consequences.