The bottom end profile (U-ground profile), the ring mesh and the top end profile (U-ceiling profile) generate the visible unit of „night closure with alphamesh ring mesh“.
The top end profile with the upper support structure is permanently connected to the ceiling (screened or directly integrated in a suspended ceiling). The top end profile is used to attach and hold the alphamesh ring mesh. If the night closure is completely closed, the top end profile works as a height-regulating element for the closing counterpart: the bottom end profile. The bottom end profile is used as the lower collecting tray of the ring mesh, and is directly connected to the drive shaft by using steel cables and deflection pulleys. With the support of steel cables, pulleys and the drive shaft the bottom end profile will be directly lifted and lowered.
The night closure is locked either with electromagnets that are recessed directly and completely in the floor under the ground tray, or with side-mounted locking bolts which are installed at the lower end of the lateral guide profiles.
The drive motor (shaft-mounted motor 3 x 400 V) is directly connected to the drive shaft on top. The dimensions and the power of the motor unit depend on the size of the alphamesh safety system. The motor unit can be programmed via a controller, so that the ring mesh night closure can be individually lifted and lowered. The operation is executed via pushbutton switch, key switch, badge reader or radio remote control with hand-held transmitter. Necessary safety components such as a contact strip (safety edge), light barrier (photocells), etc. can be offered on demand.