3M Matic 7000a, Instructions And Parts List

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33
2014 June
7000a-7000a3 Pro - NA
13-MAINTENANCE AND REPAIRS
(continued)
13.10 Box Drive Belt Tension
The four (4) continuously moving drive belts convey boxes through the tape applying mechanism.
The box drive belts are powered by an electric gear motor.
Tension adjustment of these belts may be required during normal operation (for Belt Tension Adjustment -
refer to
Box Drive Belt Replacement
). Belt tension must be adequate to positively move the box through the
machine and the belts should run fully on the surface of the pulleys at each end of the frame. The idler pulleys
on the infeed end are adjusted in or out to provide proper belt tension. Each belt is adjusted separately.
Belt tension is obtained by tightening the adjustment screw so that a moderate pulling force of 3.5kg [7lbs.]
applied at the mid span, as shown in
Figure 13-4
, will de fl ect the belt 25mm [1 inch]. This will assure positive
contact between the belt and the drive pulley on the discharge end of the drive assembly.
Figure 13-4 Box Drive Belt Tension Adjustment
•
To reduce the risk associated with mechanical and electrical hazards:
- Turn electrical supply off and disconnect before performing any adjustments,
maintenance or servicing the machine or taping heads.
Discharge End Infeed End
3.5kg (7lbs) Pull Force
with 25mm (1 inch) at Mid span
Box Drive Belt
13.9 Box Drive Pulley Rings
Before installing a new belt, check the orange plastic
drive pulley rings for wear. If torn, broken, or worn
smooth, replace the rings
(Figure 13-3).
Figure 13-3
(Tension Adjustment continued on next page)
WARNING