31
Maintenance and Service
5.6.1 Cleaning the brush space
The brush space with rotary brush
(Fig. 9/1) and gaskets (Fig. 9/4) must
be checked daily for signs of dirt and
cleaned, if necessary.
5.6.2 Changing the rotary brush
The rotary brush (Fig. 9/1) must be
checked weekly and changed in the
case of wear.
1. Switch the machine off and lay it on
its side.
2. Loosen the six fillister head screws
(Fig. 9/2) in the rotary brush and re-
move the two roller segments.
3. Install the two new roller segments
and fix in place with the fillister head
screws.
4. After changing the rotary brush, re-
adjust the sweeping pattern as nec-
essary.
5.6.3 Setting the sweeping pattern
In the case of brush wear, and after
changing the rotary brush (Fig. 9/1), re-
adjust the sweeping pattern.
1. Switch the machine off, unscrew the
locking bolt (Fig. 9/8) and open the
hood (Fig. 9/7).
2. Loosen the wing nut on the adjusting
lever (Fig. 9/5) and adjust the
sweeping pattern using the adjusting
lever by pivoting it up and down until
it touches the floor.
3. Tighten the wing nut again and close
the hood.
4. Switch the machine on and allow the
rotary brush to run while standing
still for a short time.
5. Switch the machine off, raise the
front a little and pull it back.
6. When adjusted correctly, there must
be an approx. 50 mm wide sweeping
pattern on the floor which has paral-
lel sides.
7. Repeat the process, if necessary,
until the sweeping pattern is set cor-
rectly.
8. Close the hood (Fig. 9/7) and screw
the locking bolt (Fig. 9/8) back in.
5.6.4 Changing the sealing strips
The four sealing strips (Fig. 9/4) must
be checked weekly and changed in the
case of wear.
1. Switch the machine off and lay it on
its side.
2. Remove all four sealing strips
(Fig. 9/2) with holders.
3. Loosen the screws in the holders
and remove the damaged sealing
strips.
4. Fix the new sealing strips on the
holders and reinstall them.
5. Adjust the sealing strips so that they
touch the floor lightly.
5.6.5 Changing the timing belt
The timing belt (Fig. 9/6) must be
checked every 500 operating hours and
changed in the event of wear.
1. Switch the machine off, unscrew the
locking bolt (Fig. 9/8) and open the
hood (Fig. 9/7).
2. Slacken the timing belt (Fig. 9/6) us-
ing the tension pulley and remove
the belt.
3. Slacken the tension pulley and install
the new timing belt. The timing belt is
automatically tensioned by means of
a tension spring.
4. Close the hood (Fig. 9/7) and screw
the locking bolt (Fig. 9/8) back in.
