Maintenance; Cleaning; Adjustment Of Rewind Function - Avery Dennison ALS 341 User Manual

Operators Manual
ALS 341

7. Maintenance

The labeller has a minimum of movable parts, which ensures a minimum of maintenance
required.

7.1 Cleaning

A weekly check of the following is recommended:
1. Clean all rollers from glue and labels. Use a solvent or alcohol
2. Use a soft brush for cleaning all photocells (loop sensor, label sensor and product sensor).
3. Clean the dispensing edge of adhesive residue and paper dust with alcohol or solvent.
4. Clean paper brake brush and plate to ensure even tension. Use solvent or alcohol.
5. Reverse paper brush if brush is pretended.

7.2 Adjustment of rewind function

For the rewind control only a combined adjustment of mechanics and electronic is necessary.
Function of the rewind: The speed of the rewind is controlled via a sensor that supplies signals
to the CPU-board. The CPU-board supplies control signals to the AC motor system. A dancer
arm driven coder disk with light and dark segments moves through the rewind sensor.
Depending on the amount of light the rewind sensor receives, a proportional signal is supplied
to the CPU-board.
1. Move the dancer arm in position as shown in Figure 20 picture 1.
2. Rotate coder disk according to Figure 20 picture 2(unscrew the two screws before rotating
and fasten in drawn position.
3. Move dancer arm to max loop position.
4. Adjust by means of the potentiometer P1 the speed of the rewind mandrel to a maximum
speed of 55m/min (380 = 100m/min). If the average speed of your application is lower, for
optimised smooth operation adjust accordingly. If error E_04 appears on the display value
between 200 to 250.
5. You may check the proper function of the rewind sensor under function RWCH in the
configuration menu. Dancer arm in min position display value 0000. Dancer arm position
between min and max position are producing values between 0 and 200, depending on
which section of the coder disk is in the rewind sensor.
Potentiometer P1
The potentiometer P1 is located on the CPU board. By means of P1 you adjust the rewind
speed.
Release 4/04 Page 41 Maintenance