By turning the door lock clockwise the stepped and spring loaded cam will move up behind the door frame.

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

The spring loaded cam prevents the door from opening under vibration.

A hole of 16 mm dia. is required in the door at a distance of 23 mm from frame edge to hole centre.

The spindle is inserted from the front. The spacer, cam and disc springs follow on the shaft on the inside in that sequence.

The self locking nut is fitted with a torque to allow free movement of the door lock.