Drive Wheel; Z Carriage - Rollers; 9-4.2 Replacing The Drive Belt On The Horizontal Axis; 9-5.1 Replacing The Upper Toothed Drive Wheel - Electron E-ROBOT+3 Series User Manual

9.4.2 Replace the drive belt on the horizontal axis
Procedure:
1.Switch off the electric power.
2.Remove all plates on the horizontal reciprocator.
3. First loosen the tension screw on the tension plate (we do this so that the belt does not swing wit-
hout control), then unscrew the tension plate (2 pcs) so that the drive belt can be pulled towards the
locking plate.
4. Unscrew the screws (2 pcs) on the locking plate and you can completely remove the drive belt from
the robot.
5. Screw on the new drive belt at the locking plate .
6.Pass the loose end of the drive belt from under the first roller and over the toothed drive wheel.
And then pass it under the 2nd roller and pull it towards the adjustment plate.
7. Screw on the drive belt at the lower locking plate.
8. Tighten the drive belt by tightening the tensioning screw on the tension plate, but do not overtigh-
ten.
9.When 50N force is applied, the distance to the upper plate will be 30 mm. Horizontal length is 1900
mm from end to end. Measure from the middle point (950 mm).

9.5. Drive wheel

9.5.1 Replacing the upper toothed drive wheel
WARNING:
The following workings should only be carried out by trained personnel!
Procedure:
1. Let the Z carriage (7) move down onto the lower stop.
2. Switch off the electric power.
3. Remove the boarding (side panels).
4. Remove the locking plates (5) and loosen the tensioning screws (4), so that the drive belt (3) is slack
5. Completely remove the front tensioning screw
WARNING:
Danger of accident!
** The Z carriage must definitely rest on the mechanical stop bumper, before this tensioning
screw is removed!
6. Hold the toothed drive wheel (6) tight in one hand whilst the eye bolt is being removed from the spind-
le
7. Remove the drive belt (3) from the toothed wheel
8. Remove the toothed drive wheel (6) and replace it
The installation takes place exactly in the reverse order!
- If necessary, remove the service cover on the base (1), to check if the drive belt (3) is sitting
correctly on the toothed drive wheel
- Let the Z carriage slowly run up and down the column a few times, to see if the drive belt must be tensio-
ned more

9.6. Z carriage - rollers

If the Z carriage (7) starts to vibrate excessively during operation, especially at the reversing points, in most cases the
cause lies in too much play in the carriage rollers, or even loose rollers!
In this case, proceed as follows:
1. Let the Z carriage (7) move down onto the lower stop
2. Switch off the electric power
3. Remove the boarding (front and side panels)
4. Remove the plate to which the strap is attached and the counterweight plates.
WARNING:
Be careful when removing the plate the strap is attached to. Since the belt is still attached, it
can drop suddenly when removed.
5. Loosen the lock nut on the grub screw
6. Loosen the nut on the roller axle bolt
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