03/10 Rev. 5.04-04 SERVICE MANUAL Service Mechanics
64-xx – 64-xx Dispenser
11
Adjusting the unwinders brake torque
Tools
•
Spring balance 5 N (1) (article no. 93665-01)
•
Reel with wound-up textile ribbon (Ø 76 mm or 3") (2)
Fig. 1 Left side: Aid for adjusting the brake torque: Reel with textile ribbon (2) and spring
balance (1). Right side: Measuring the pulling force.
Adjusting 1. Attach the reel to the unwind mandrel.
2. Hang the spring balance to to the sleeve of the textile ribbon.
3. Hook the spring balance into the foil loop and pull on it until the foil mandrel
turns slowly and steady. Read off the traction (see Fig. 1 right side).
While pulling at the rewinding mandrel, it is essential to keep the foil feed
roller blocked!
The pulling force may vary within the indicated tolerances (see Tab. 3).
Printer Admissible
pulling force
Article no.
brake sponge
No. of sponges each
unwinder
64-04
64-05
64-06
0.6 – 1.5 N A0938 1
64-08 0.9 – 1.9 N A1607 2
Tab. 3 The pulling force must match the dedicated range.
4. Compare the measured pulling force to the values given in Tab. 3.
5. If the measured value exceeds the admissible range, the unwinder has to
be disassembled and the included brake sponge to be exchanged.
It may be necessary to insert additional brake sponges to reach the
required pulling force.
See chapter Material unwinder on page 10.
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