tamper circuit issue g4?

accenta g4 tamper issues
can any one help please
should i remove the factory (3 OF THEM ) fited links in the tamper terminals in the panel?
i have removed bell link all is well
i have removed pir link all is well
but the keypad link when removed goes into lockout, with it in place the alarm does not go off when cover removed,
so iam a bit confussed the manual says leave in !!

please help
thank you