Lavina 20-S User Manual - page 20
25
Superabrasive
User Manual
Original Language
Lavina® 20‐S
6/2013
Change the two other pulleys as earlier described in the chapter, best when the motor base disc is dismount to change the roller
units too. Unlock the nut on top (Fig.9.6.25). The pulleys can be released with two crowbars; do not use excessive force (Fig.9.6.26)
(Fig.9.6.27).
9.7 MOUNTING THE BELT
The mounting of the belt is shown on Fig. 9.7.11. Putting the belt
is possible when the tensioner is in starting position:
‐ loosen the nuts pos.2
‐ loosen enough the nuts pos.3 (or unscrew them).
‐ unscrew the nut (pos.4) and pull out the bush (pos.5) from hole
D in the tensioner (pos.1), that will allow the tensioner to have the position
in Fig. 9.7.11.
‐ put the belt following steps shown on Fig. 9.7.2; Fig. 9.7.3 and
Fig. 9.7.4. (It is possible also to put the belt on the
roller unit assembly as a
last step.) Check if the belt is on the
right place in the grooves of each of
the pulley units
and on the central pulley.
Put back the tensioner in a position the axle bushing to fit in the
tensioner hole (Fig. 9.7.5) (You can push down the bush screwing the nut
pos.4)
Tighten the nuts (pos.2, Fig. 9.7.1) on the sectors and unscrew half
rev. ( Fig. 9.7.5) This will allow the tensioner turn in minimum clearance.
Fast light the belt (Fig. 9.7.7) in order to achieve the right position and then
tighten the nut in the center of the tensioner ( Fig. 9.7.6). Fast up the belt taking care of the tensioning (Fig. 9.7.7).
It is recommended that the tensioning of the belt be measured with Optikrik II Device (Measuring range: 500‐1400 N) (Fig. 9.7.8) .
For
a new belt the tensioning force is
650N, and the fastening force is 520 N.
ATTENTION: NEVER “OVER” TENSION THE BELT, THE BELT WILL BE DAMAGED AND IT WILL NEVER RECOVER ITS ORIGINAL TENSION
Tighten the two nuts on the sectors and contra nut on the tensioner ( Fig. 9.7.10). Put the seal ring on the bottom cover and close
the machine ( Fig. 9.7.11).
Reassemble in the same manner.
Your Lavina® S machine is now ready for use!
Figure 9.7.2
Figure 9.7.3
Figure 9.7.4
Figure 9.7.9
Figure 9.7.1
Figure 9.7.5
Figure 9.7.6
Figure 9.7.7
Figure 9.7.8
Figure 9.7.10
Figure 9.7.11