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7 Components Table SIPLACE 80 S-20/F4 Service Manual 7.6 Empty Tape Cutting Unit and Empty Tape Channel Edition 03/97 7 - 42 NOTE The exac t adjustm ent is carried o ut with the aid of t he bel t tension measuri ng devic…
SIPLACE 80 S-20/F4 Service Manual 7 Components Table
Edition 03/97 7.6 Empty Tape Cutting Unit and Empty Tape Channel
7 - 41
Fig. 7.6.4 Replacing and tensioning the cut toothed belt
Key to Fig. 7.6.4
1 Cut toothed belt
2 Cutter wheel
3 Deflection pulleys
4 Synchronous pulley
5 Spanner
6 2 M4 hexagon socket screws
A Measure belt tension in the center of the belt, setpoint value: 40-45 Hz
4
2
3
1
6
5
A
7 Components Table SIPLACE 80 S-20/F4 Service Manual
7.6 Empty Tape Cutting Unit and Empty Tape Channel Edition 03/97
7 - 42
NOTE
The exact adjustment is carried out with the aid of the belt tension measuring device. The user manual is
included under this item number.
● Bring the empty tape cutting unit into a stable position, and then position the belt tension measuring device
at the empty tape cutting unit corresponding to the measurement point in Section Fig. 7.6.4.
● Measure the belt tension when the carriage is on the left and when it is on the right:
– Halfway along the belt you must measure 40 - 45Hz.
● If necessary, correct the toothed belt tension by moving the corresponding tension piece.
● Finally make sure that the screws are firmly tightened up at the tension pieces.
● If applicable, go straight on to check the endless toothed belt (see next section).
● Fit the empty tape cutting unit into the machine as described in Section 7.6.14, subsection "Reinstalling
and adjusting the empty tape cutting unit".
● Carry out the "Concluding work" including a function check (see Section 7.6.15).
7.6.11 Checking, Replacing and Tensioning the Endless Toothed Belt
If the endless toothed belt is damaged or incorrectly tensioned, this can - similarly to with the cut toothed belt
- be the cause of the motor being switched out, premature wear or tapes not being cut.
● To remove the empty tape cutting unit follow precisely the same procedure as for the cut toothed belt
described above, from the first point.
● Undo the screws fastening the clamping connector to the cutter wheel carriage (2 socket-head cap screws
M4, see Fig. 7.6.5) and lift the defective cut toothed belt upwards and off the synchronizing disks.
● Fit the new endless toothed belt (A, B, C in Fig. 7.6.5). Make sure that the welded join of the toothed belt is
positioned centrally as shown in the diagram.
● Bring the empty tape cutting unit into a stable position, and then position the belt tension measuring device
so that you can measure the belt tension centrally.
● Make the measurements while referring to the user manual for the belt tension measuring device:
– The toothed belt tension must amount to 30 - 35Hz.
● If this is not the case, correct the position of the left-hand synchronizing disk axle within the slot accord-
ingly. To do this, slacken off the hexagonal nuts at the lower end of the axle (underside of the support).
● Finally, make sure that the synchronizing disks mounting is firmly seated.
● Fit the empty tape cutting unit back into the machine as described in Section 7.6.14, subsection "Reinstall-
ing and adjusting the empty tape cutting unit".
● After this carry out the "Concluding work" including checking functioning (see Section 7.6.15).
SIPLACE 80 S-20/F4 Service Manual 7 Components Table
Edition 03/97 7.6 Empty Tape Cutting Unit and Empty Tape Channel
7 - 43
Fig. 7.6.5 Replacing and tensioning the endless toothed belt
Key to Fig. 7.6.5
1 Clamping connector
2 Drive motor
3 Cutter wheel carriage
4 Deflection pulley
5 Endless toothed belt
A Insert endless toothed belt
B Check, whether the toothing of the clamping connector engages in the toothing of the endless toothed belt
C Screw on clamping connector without squashing the toothed belt
D Measure tension of toothed belt in the center of the belt, setpoint value: 30-35 Hz
E To measure belt tension, move up cutter wheel carriage to the left stop
F Correct tension of toothed belt using the movable deflection pulley, if necessary
,,
4
F
E
3
5
2
1
D
A B C