78
Maintenance and Service
5.7.2
Changing the rotary brushes
Check the rotary brushes on a
weekly basis for signs of wear.
When a rotary brush has worn to a dia-
meter of approx. 10 cm, the rotary brus-
hes must be replaced by new ones
(diameter of new rotary brush:
13.6 cm).
To protect the floor surface, the
rotary brushes are equipped
with a wear restriction facility.
When the minimum diameter is
reached, the rotary brush head
lowers onto a vertical stop. The
full cleaning performance can
no longer be achieved when in
this position.
1 Locking lever
2 Oval-head screws
3 Hex nut
4 Contact surfaces
5 Rotary brush
6 Brush holder
7 Contact surface between brush hol-
der and oval-head screws
Fig. 31
1
2
3
4
5
4
6
6
7
