Assembly and maintenance

Removal of a profile cylinder

Standard doors

To remove a profile cylinder, first insert the key into the cylinder as far as it will go. In the case of a knob turning cylinder, the knob is of course used instead of the key. Now the forend screw (can be Phillips or but also a slotted screw) is to be unscrewed.

Please do not use a drill screwdriver. Here, manual work is better. If the forend screw was overtightened, (can happen when screwing in, but also when unscrewing) the problems start. Then only patience and some skill will help. Without removing the forend screw, the cylinder is also not to get out!

The key is from the zero position (trigger position of the key) 30 ° left or right (here is the zero position of the locking cam) to turn. By turning it, you try to pull the cylinder out of the PZ hole of the protective fitting. If this is not possible without problems, it is advisable to loosen the fitting slightly. This removes any tension from the profile cylinder. Pulling it out should then no longer be a problem.

Biffar doors

For Biffar doors, first remove the hardware on the inside. From the recess in the lock case, you can tell if it is a locking cylinder with Biffar cam. You can recognize this cam by the 2 opposite locking lugs (normal cams have only one locking lug). Proceed in the same way as for standard cylinders. Unscrew the forend screw and then turn the cylinder with the door open by turning the cam with the help of a key to the trigger position and pull out the cylinder.

Multiple locks with gear wheel

(e.g. MVS 800 of the company Grundmann, installed in high-quality security doors of the former companies Wassner Ges.mbH and Wassner & Partner GmbH)

High caution is required here!
After the forend screw has been loosened or unscrewed, the position of the gear must not be changed!
So there must be no key in the cylinder. If the cylinder with gear (usually Multilock) is twisted without a forend screw, the tooth mechanism inside the multipoint locking system is also brought into an undefined position. As a result, the door can no longer be locked or opened. A reset is only possible with considerable effort.

If the recess for a gear wheel is visible, do not use a key. The cylinder is to be pulled out of the mortise lock after removing the faceplate screw without a key being inserted! If there is a turning knob on the Lock cylinder, the cylinder must first be moved to the neutral position with the door open. Only then may the cylinder be removed without twisting the cylinder.

When installing knob turning cylinders, the knob must be unscrewed and the cylinder brought to the zero position (here the key is removed) by means of a key. Then, without turning the knob rotor, the cylinder must be pushed into the multipoint lock and fixed with the faceplate screw. Only then may the key or knob be turned.