1. Remove the lock latch (two screws) and take out the pins.
2. Remove the light bulb and undock the wiring connector.
3. Take a ware box from the panel of devices.
4. Remove the Phillips head screws from the box cover, unscrew the slotted nuts.
5. Vertically position the locking pin on the outside edge of the cover and remove the locking bracket. Since the locking pin has a stopper on one side, it must be rotated 180°if it cannot be removed.
6. Lift the inner cover and remove the outer cover, then remove the inner cover and stop bracket.
7. If necessary, the lock can be removed by squeezing its cams with tongs. There is a label on the top of the lock «oben» (top).
8. Installation is made in an order, the return to removal.