8.1 Mechanical faults

8.1.1 Checking moving leaf

1. Disconnect the moving leaf from the toothed belt using the toothed belt locking.
2. Move the moving leaf and check for ease of movement.

If moving leaves move easily:

• Check the motor gear unit and deflection pulley and replace if necessary.

8.1.2 Replacing roller carriage

1. Secure moving leaf against falling.
2. Separate driver from roller carriage (3) if necessary.
3. Loosen nut (1) of the counter roller and slide the counter roller downwards.
4. Loosen the 2 screws (5) and lower the moving leaf using the height adjusting screw (2) until it touches the ground.
5. Screw the 2 screws (5) out completely.
6. Tilt the moving leaf carefully until the roller carriage can be accessed freely.
7. Screw the 2 screws (4) off.
8. Replace the roller carriage (3) and screw tight using the screws (4). Note the distance to the wall.
9. Align the moving leaf again in vertical and horizontal position.
10. Screw the 2 screws (5) in, but do not tighten them yet.
11. Use the height adjusting screw (2) to set the moving leaf to the correct height.
12. Tighten the 2 screws (5) with approx. 40 Nm.
13. Adjust the counter roller (see Chapter 5.4.5).

8.1.3 Replacing track rollers

1. Remove the roller carriage (3), see Chapter 8.1.2.
2. Screw the pivots (1) of the track rollers off.
3. Screw the screw (2) off.
4. Exchange the track roller (4) (torque 20 Nm).
5. Reinstall roller carriage in reverse order.

8.1.4 Replacing brushes

1. Secure moving leaf against falling.
2. Unhook the moving leaf if necessary and tilt it as described in Chapter 8.1.2.
3. Pull brushes (3) out of pulley holder (1).
4. Clean rollers (2) and insert new brushes.
5. Hook the moving leaf in again and adjust it.
6. Adjust the counter roller (see Chapter 5.4.5).

8.2.1 Replacing fuse in transformer

1. Disconnect the door system from the 230/115 V mains supply on site before removing the PCB cover (1) and secure against being switched back on again.
2. You will find the fuse value on the wiring diagram.

3. Insert a suitable screwdriver into the opening of the PCB cover (1) above the switch.
4. Carefully press the end wall of the PCB cover upward with the tip of the screwdriver. This releases the snap catch.
5. Remove the PCB cover (1).
6. Pull the fuse holder forwards and off and replace the defective fuse.
7. Attach the fuse holder.
8. Do not trap the cable when setting the cover in place.
9. Set the PCB cover (1) in place and clip on.