11.0 Maintenance and repairs
Always disconnect the machine from the network
before any maintenance or repair. Switch off the
machine and lock up the main switch ! So you avoid
an occassional starting of the machine by somebody
else.
11.1 Tightening and exchange of V-belts or changing of saw blade drive step-up ration
11.1.1 Unit description
Bedding mechanism of spindle and
electric motor is accessible after
opening the back door of machine
frame that is blocked electrically.
When the door is open – the ma-
chine cannot be started.
Electric motor (A) with holder (B) is
hung around a pivot. The holder (E)
of tilting is fastened at the spindle
body (D). The screw of take-up (H),
by help of spring (G), presses the
spindle body and motor holder (B)
from itself and herewith tightens the
belt (C) automatically.
11.1.2 Changing belt tightening
The change is practised by changing
(pressing or releasing) of the spring
tension by help of a position change
of nut with a counternut (I).
If you press onto the middle of a properly tightened belt with a force of 25 N (2,5 kg) – it
should sag of 5 – 6 mm.
11.1.3 Change of belts or change of transmission ratio
At a belt change or that of transmission ratio it is necessary at first to release the belt. It is
done quickly and easily by moving the lever (J) with excenter (F) into a lower vertical
position. Now it is possible to change the belt or to put it onto an else step-up ratio at a
multiple belt pulley and to put the lever (J) with excenter (F) back to the initial position.
Herewith the spring (G) will get unblocked and the belt will be tightened automatically.
