4.16 Mount the toothed belt

1. Remove the caps from the toothed belt engaging units.
2. Place the toothed belt around the operator wheel on the DRIVE UNIT and the guide pulley on the tensioning device. If there is a locking device, guide the toothed belt through the open locking device.
3. Insert both ends of the toothed belt into the upper toothed belt engaging unit in such a way that both ends reach the center of the toothed belt engaging unit.
4. Put the cap on.
5. Press the tensioning device firmly outward in order to pre-tension the toothed belt.
6. Align the tensioning device parallel to the operator profile.
7. Screw the tensioning device tight.
8. Push the door leaf into the closed position.
9. Insert the toothed belt into the lower toothed belt engaging unit.
10. Put the cap on.
11. Loosen the screws on the tensioning device.
12. Turn the screw on the tensioning device until the red ring is in the center of the viewing window.
13. Tighten the screws on the tensioning device.

4.17 Adjust the tensioning device

Slide the door leaf along the entire travel path. Check whether the toothed belt is running centrally on the wheel assembly of the tensioning device.

Condition: If the toothed belt is not running centrally on the wheel assembly, the tensioning device must be adjusted.

1. Loosen the nut.
2. Adjust the tensioning device.
3. Tighten the nut.

4.18 Position the main closing edge

1. Loosen the screws on the toothed belt engaging units.
2. Position the main closing edge in the middle of the opening width.
3. Tighten the screws on the toothed belt engaging units.

4.19 Mount the optional extension modules

If the main closing edge and secondary closing edge sensors are connected to the SiAK extension module, 2 SiAK extension modules are required. The DIP switch is used to determine whether the main closing edge or secondary closing edge sensor is connected via the corresponding SiAK extension module.

• Mount the extension modules according to the accompanying manual.

4.20 Mount the cable ducts

• Clip the cable ducts into the operator profile from below.

4.21 Mount the cover holders

Mount 1 cover holder on both ends and in the middle of the operator profile.

1. Insert the cover holders into the operator profile from below.
2. Turn the cover holders so that the mounting bracket is perpendicular to the profile.
3. Tighten the cover holders with both hexagon screws.

4.22 Prepare the internal cover

1. Slide the square nut into the groove.
2. Attention: Do not mount the protective conductor in the area of movement!
   Screw the protective conductor into the internal cover at the desired place.
3. Note: Do not position the hinge profile in the area of the cover holders.
   Clip the hinge profiles evenly over the length of the cladding.
4. Clip 1 holder each into the cladding in the same position as the cover holders.
5. If the distance between the outer holder and the outer edge of the cladding is more than 80 mm, an additional piece of the hinge profile must be cut to length and mounted.
6. Attach the dormakaba logo.
7. Mount the end plates according to the accompanying manual.

4.23 Mount the internal cover

1. Attach the internal cover by lightly tapping the palm of the hand on the operator profile.
2. Open the internal cover, always holding the center of the cladding.
3. Slide the holders for the internal cover so they match the position of the cover holders.
4. Secure the holders for the internal cover with the screws.
5. Secure the internal cover with the cover holders.
6. Attention: Do not mount the protective conductor in the area of movement!
   Mount the protective conductor in the operator profile.

4.24 Mount and connect the accessories

Notes for FST (Fire and Smoke Tight) Doors:

• Mount and connect the accessories according to the accompanying manuals.
• The holes in the operator profile must be drilled with Ø 8 mm and then deburred.
• Clean the operator profile and running profile.

4.25 Position the sensors

The size of the detection field depends on the mounting height and the settings of the sensor (see sensor manual). According to EN 16005, the test piece CA must be detected anywhere in the sliding door’s passage area. Set the sensors’ detection zone in such a way that the doors do not run into the test object.

Note: Large opening widths may require several sensors.