Pull Roller Clutch Adjustment - Gfp 865DH Operating Manual

23. Pull Roller Clutch Adjustment

• A friction clutch is installed on the drive side of the rear lower pull roller shaft inside the
left cabinet. Adjusting the compression nut will increase or decrease the rear pull roller
speed to regulate film tension between the nip and the pull rollers.
• Adjust the compression nut by using the locking wrench supplied with the machine.
Rotating the nut clockwise will increase speed of the pull rollers and so the film tension
between the nip and pull rollers; a clockwise rotation will decrease the pull roller speed
and so the film tension.
• The machine is adjusted before delivery; under normal conditions the clutch should not
need further adjustment.
• However, if the output web has horizontal waves (across the width of the web), the clutch
may need to be adjusted clockwise to increase the speed of the pull rollers. This will
increase the web tension between the nip and pull rollers to reduce the horizontal waves
• Conversely, if the output web has vertical waves (running the length of the web), the
clutch may need to be adjusted counter clockwise to reduce the speed of the pull rollers.
This will decrease the tension between the rollers and reduce the vertical waves.
Gfp 865DH February 2018
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Compression Nut