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4.4.1 Glue
Adjustment
The glue level may require adjustment when the thickness of the book or pad varies. Use the following
book spine illustrations for guidelines.
• Increasing the holt-melt glue when
Hollow middle OR Round
• Decreasing hot-melt glue when
Too much glue on both sides OR Nail head
Adjusting the glue level :
1. Turn the glue adjustment lock knob counter clockwise to loosen.
2. Increase the amount of glue by sliding the knob to the right at the appropriate position.
MIN MAX
3. Decrease the amount of glue by sliding the knob to the left at the appropriate position.
MIN MAX
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