Signode PSD-109 Operation, Parts And Safety Manual page 8

ADJUSTMENTS, Continued
STRAP ACCUMULATION
The amount of strap retracted from the strapping
machine by the dispenser is dependent upon the
position of the dancer arm when the brake is
engaged.
If the brake engages too near the lower end of the
dancer arm travel, very little strap is retracted and
accumulated. The loops between the roller stacks
and the length of strap between the dispenser and
the strapping machine can become excessively
loose.
Brake engagement too near the upper end of the
dancer arm travel will result in excessive coil
acceleration and high back tension on the strap
entering the strapping machine.
Since proper strap accumulation depends on the
application, the factory setting must be considered
nominal and some fine tuning may be required.
The brake is engaged when the cam follower (1)
on the brake lever (2) is driven in an upward
direction by the cam (3) on the dancer arm shaft
(4). The amount of pre-travel adjusted into the
cam will determine the point at which the brake is
engaged.
To adjust the brake engagement point, loosen the two cam fasteners (5) and reposition the cam
as needed. If more adjustment is needed than is available through use of the slots in the cam,
reposition the fasteners in the adjacent tapped holes provided.
Make sure the cam fasteners are securely tightened to maintain the setting.
NOTE: If the release point s set to occur above the dancer arm latching position, the dispenser
will not be free to turn during the strap threading procedure.
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