Avery Dennison ALS 306 - Manual (Page 41)

42
3 B
EFORE OPERATION
3.3 M
ECHANICAL SETTINGS
ALS
306
309
GB
3.3.3 Positioning the label sensor
£ Release the thumb screw.
£ Position the sensor along the axle in such a way as
to allow it to register the spaces between the labels.
The LED [45A] lights up when the sensor is
positioned over a label.
3.3.4 Setting the dancer arm
restoring force
The unwinder dancer arm is preset in a way, that a wide
range of label materials can be processed whithout ha-
ving to change the dancer arms restoring force.
Even so, very narrow label material can under certain
circumstances tear off or expand in a way which results
in poor labelling precision. In those cases, the restoring
force must be decreased.
£ Loosen the lock-ring [47B]. To do so, hold the
adjustment ring [47A] and turn the lock-ring
opposite the direction indicated by the pictured
arrow.
£ Turn the adjustment ring [47A] in arrow direction
[47 arrow] to increase the restoring force.
Turn the adjustment ring [47A] against arrow
direction [47 arrow] to decrease the restoring force.
£ Retighten the lock ring against the adjustment ring.
A service technician can restore the factory set-
ting, see service manual chap. 6.2.3 section
„Adjusting restoring force of dancer arm“.
[45] Label sensor from Wenglor, model OPT242-P800
B
A
[46] Restoring spring (A) at the unwinder dancer arm.
[47] A Adjustment ring
B Lock-ring
A
A
B