28
AS REQUIRED
3.24 Water sprinkler system,
maintenance in case of frost
!Caution
The water sprinkler system must be emptied
or filled with an antifreeze mixture if there is
a risk of frost.
Fig. 52
l
Remove the water tank.
l
Drain all water out of the tank by removing
the plastic plug 1.
l
Push the plastic plug back on.
l
Fill the antifreeze mixture (water and
antifreeze agent, e. g. glysanthene) into
the tank.
3.25 Adjusting the scrapers
Fig.53
l
Loosen the fastening screws.
l
Adjust the scrapers (1) until they touch the
drum lightly ( sleight bending of the plastic
insert).
l
Retighten the fastening screws.
3.26 Tightening torques for screws with
metric unified thread
Tightening torques * in Nm (ftlb).
Fig. 54
* Strength class for screws with untreated,
non-lubricated surface. The quality designation
of the screw is marked on the screw heads.
8.8=8G 10.9 = 10 K 12.9 = 12 K
The values result in a 90% utilization of the
screws yielding point at a coefficient of friction
of total = 0.14.
The tightening torques are checked with torque
wrenches.
The above mentioned tightening torques do not
apply when using MoS2 lubricants.
i Note
Self locking nuts must always be replaced after
they have been loosened.
