If you have, then you will see that it can be turned off (last page), is this likely to be the case?
If you need a copy, go to their web site "tagheuer.com", select "watches", then "tag heuer formula 1", then "man", followed by "Tag Heuer F1 chronometer" and finally you will see on the right a menu, select "user manual".
This seems to be a generic manual that cover both the chronometer and alarm version of the watch.
If these are not the correct instructions for your watch, opposite the "user manual" menu is a search box, put your watch model in this and there should be a user manual with it.
If not look at a similar watch for a generic manual.
Answers & Comments
Have you a copy of the manual?
If you have, then you will see that it can be turned off (last page), is this likely to be the case?
If you need a copy, go to their web site "tagheuer.com", select "watches", then "tag heuer formula 1", then "man", followed by "Tag Heuer F1 chronometer" and finally you will see on the right a menu, select "user manual".
This seems to be a generic manual that cover both the chronometer and alarm version of the watch.
If these are not the correct instructions for your watch, opposite the "user manual" menu is a search box, put your watch model in this and there should be a user manual with it.
If not look at a similar watch for a generic manual.