Positioning The Label Sensor; Setting The Dancer Arm Restoring Force - Avery Dennison ALS 204 User Manual

3 B
EFORE OPERATION
3.3 M
ECHANICAL SETTINGS

Positioning the label sensor

3.3.3
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 [48A] lights up when the sensor is
positioned over a label.
Setting the dancer arm
3.3.4
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.
Tool: 2.5 mm hex socket screwdriver
Turn the adjusting screw [49A] on the dancer arm
left to increase restoring force.
Turn the adjusting screw [49A] on the dancer arm
right to decrease restoring force.
A service technician can restore the factory set-
ting, see service manual chap. 9.4.3 section
„Adjusting restoring force of dancer arm".
If the problem still occurs, although the restoring force
is already set to a minimum, there is the option of buil-
ding in some weaker springs.
The springs must be built in by a qualified ser-
vice technician. Instructions can be found in the
service manual, chap. 9.4.3 section "Replacing
dancer arm springs", „Narrow label kit".
[48] Label sensor from Wenglor, model OPT242-P800
[49] Setting screw (A) at the unwinder dancer arm.
43
ALS
20x
256
GB
B
A
A