By turning the door lock clockwise the stepped door cam moves up behind the door frame and pulls the door in.

The wide 'pulling-in' range of the cam (10 mm) allows these locks to be used successfully on doors with sealing strips. When selecting depth ' A' the thickness of the door seal might have to be taken into consideration.

To fit the lock, the door will have to be provided with a hole as per sketch shown at a distance from the door frame to hole center of 23 mm.

The lock housing with the operating spindle is fitted into the hole from the front and held in position with the "hexagon nut. The distance piece is then fitted at the rear, followed by the cam and the hexagon nut.