3M 800rf Adjustments continued 13.12 Box Drive Belt Tension, 3.5kg 7lbs Pull Force, Discharge End

Adjustments (continued)

13.12 Box Drive Belt Tension

The two (2) 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 3.5kg [7lbs.] applied at the mid span, as shown in Figure 13-14, 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.

	Box Drive Belt	3.5kg (7lbs) Pull Force
		with 25mm (1 inch) at Mid span
Discharge End			Infeed End

Figure 13-14 Box Drive Belt Tension Adjustment

13.13Adjustment of the Upper Assembly Descent Brake

The brake adjustment must be done when the upper group does not stay in position and tends to come down further.

-Loosen the screw 1

-Turn the ring nut 2 clockwise

-Tighten the screw 1

Do this operation on both cylinders.

800rf-NA

45

2

1

Figure 13-15

2012 March