International - ENG
February 2021
3M-Matic
™
7000a-I / 7000a3-I Pro - Type 11700 Original Instruction
Page 33
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Manuals/Translations
44-0009-2164-1 / ECO# 0078045
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).
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 Adjust-
ment - 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 tight-
ening 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 deflect 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
Discharge End
Infeed End
3.5kg (7lbs) Pull Force
with 25mm (1 inch) at Mid span
Box Drive Belt
Figure 13-3
13. Maintenance and Repairs
(continued)
• To reduce the risk associated with
mechanical and electrical hazards:
- Turn electrical supply off and disconnect
before performing any adjustments, mainte-
nance or servicing the machine or taping heads.
WARNING
