Operating instructions

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Supply shafts
Unwind brake
Unwind brake tension setting
Rotation of the knob clockwise will increase the unwind brake tension.
Rotation of the knob counter-clockwise will decrease the unwind brake tension.
During the process, the film tension is shown by the motor current in Amps. Rotation of rollers
without web tension will show a value of approximately A0.5. By increasing the brake tension the
current value will increase to A1.0 – A2.0. To achieve best results, adjust tension for top and bottom
films step by step, i.e. top a little then the bottom.
WARNING:
The maximum continuous current is 2.3. If the current stays too long above 2.3, the motor overload
circuit will come active and the rotation of the rollers will stop. This can damage the job which is in
process.
NOTE:
When the diameter of the film rolls decreases, the web tension must be decreased also to
avoid overload.
Knob for unwind brake tension