Adjustments; Box Drive Belt Tension - 3M -Matic 700a Instructions And Parts List

Adjustments

WARNING – Turn off electrical power supply and disconnect power cord from electrical supply
before beginning adjustments. If power cord is not disconnected, severe injury to personnel
could result.

Box Drive Belt Tension

The four 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. 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 3.5 kg [7 lbs.]
applied at the midspan, as shown in Figure 5-1, will deflect the belt 25 mm [1 inch]. This will assure positive
contact between the belt and the drive pulley on the discharge end of the drive assembly. Note – Figure 5-1
illustrates the lower drive belts, however, upper belts are adjusted in the same manner.
Figure 5-1 – Box Drive Belt Tension Adjustment
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