MBM Corporation 1500S - Manual (Page 38)

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[Adjustment of Suction Air Strength]
When using thin papers like copy paper, double feed may tend to occur with stronger suction power.
Set Suction Strength Window at 4, i.e., opened fully.
Refer (E) at page 39.
The position of No. 0 is the closed condition of window, i.e., strongest suction by belt.
Suction Belt in effect can be switched between 3 rows and 2 rows, stronger and weaker suction respectfully.
Normally, 3 rows are used.
(D) Paper Height Adjustment
Adjust paper height by opening the top cover.
In case of adjusting the position of paper height according to the paper quality, loosen the paper
feed table height adjustment knob and while holding the knob, set the point to “H”, “M” or “L”.
Recommended Position : Set to “H” side when paper cannot be sucked.
Set to “L” side when double feeding frequently occurs.
Paper Feed Table Height Adjustment Knob
Paper Feed Table Height
Adjustment Knob
Point
Suction Belt Control 3 or 2 rows
Suction Strength Window