16
3.6.4 Setting the tensioning roller
The tensioning roller of the indented belt of the top feeding
is mounted in a rotary way on the bedplate. The belt must be ten-
sioned as needed in such a way that there is ensured the correct
function of the transmission. Insufficient tension can cause
skipping of the teeth, on the contrary, excessive tensioning
enormously loads the mounting of the top shaft. The setting thereof
is to be done as follows:
Caution! Danger of injury!
Switch off the main switch! Before starting the setting
operation, wait until the motor stops!
- Loosen the screw (1) securing the lever of the tensioning roller
(2).
- Tension the belt as needed (theoretically, in applying the
force of 10 N in the middle of the belt with the deflection of
4 mm).
- Tighten the screw (1).
3.6.5 Replacement the indented belt
Before replacing the indented belt, the bottom feeding shaft is to
be removed. The procedure is as follows:
Caution! Danger of injury!
Switch off the main switch! Before starting the setting
operation, wait until the motor stops!
- Loosen the screw (1) of the tensioning roller (2) and loosen it.
- Loosen the screws (3) of the pulley (4) and shift it to the left in
such a way that the screws (5 and 6) of the feeding clutch (7)
are accessible.
- Loosen the screws (5 and 6).
- Loosen the screw (8) of the axial ring (9).
- Loosen the screws (10) of the chain wheel (11).
- Push the shaft (12) to the left in such a way that it is out of the
pulley (4).
- Remove the pulley (4).
- Remove the front guard.
- Loosen and unscrew the screw (4) of the holder of the wheel
(15) and remove it from the holder (24).
- Loosen the screws (16 and 17) of the holder (18).
- Remove the holder (18) together with the holder (15) and
articulated shaft (13) from the machine.
- Loosen the screws (19) of the pulley (20).
- Remove the retaining ring (21) from the shaft (22).
- Hold the pulley (20) and pull out the feeding shaft (22) from the
arm in such a way that it is possible to remove the indented belt
(23) from the arm of the machine.
- Replace the belt with a new one and proceed to the assembly
(inverted procedure of dismantling).
- Proceed to the setting operation according to the par. 3.6.2,
3.6.3 and 3.6.4.
11
10
12
4
3
8
9
1
2
5 6
7
24
15
14
21
22
23
20
19
13
17
18
16
2
1
