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Chapter 5
Nominal Adjustment
Normally for a bag that is 1-1/4 to 1-3/4 mil thick
the eccentric ribbon guide is positioned so the
lobe is towards the infeed, with the belt pulley
positioned so it almost touches the eccentric
ribbon guide's support bolt.
Adjusting the Eccentric Ribbon Guide
The eccentric ribbon guide adjustment is for fine-
tuning the window area and can be adjusted by
opening the front cover, pushing on the eccentric
ribbon guide to disengage the guide from the hex
bolt, and rotating the guide to change the position
of the ribbon wire. Moving the ribbon downstream
increases the window area and loosens the tie.
Moving the ribbon wire upstream decreases the
window area and makes a tighter tie. When you
have found the proper position for the guide be
sure it seats back into the flats of the hex bolt.
Adjusting the Belt Pulley
If after adjusting the eccentric ribbon guide the
bag is still not tied with the proper tension, the belt
pulley will need to be adjusted. First, it is essential
that the guide not interfere with the rotation of the
belt pulley. Disengage and rotate the eccentric
ribbon guide to its closest position to the belt
pulley. Next, loosen the mounting bolt and nut of
the belt pulley. Slide the belt pulley downstream
to decrease the area of the window and tighten
the tie and upstream to increase the window area
and loosen the tie. When the pulley is in the
proper position, tighten the mounting bolt and nut.
CAUTION: Never allow the eccentric ribbon guide or mounting bolt
to rub against the belt pulley or damage to the unit will occur.
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