Adjustment Adjustment of the tangential force Fu, can be made by removing the unit from the mounting flange and adjusting the screw (4), so altering the spring force. This procedure discourages tampering by unauthorised personnel.
Adjustment Adjustment of the tangential force Fu, can be made by removing the security cover (1) from the mounting flange and adjusting the screw (2), so altering the spring force. This procedure discourages tampering by unauthorised personnel.