Lifting And Folding The Top Roller - DURKOPP ADLER 838 Instruction Manual

6.9 Swiveling and lifting the top roller
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Using the hand lever to lift the top roller
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Lift the top roller by turning the lever (1) in the direction of the
arrow until the end stop. The top roller is secured in the upper
position by the lever.
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In order to lower the top roller, turn the lever (1) back to the starting
position.
Or:
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Lift the top roller pneumatically or with the knee lever (3). The lever
then moves back to its starting position.
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The machine can be kept on after the hand lever is used to raise
the top roller (for example, when winding the lower looper thread).
Using the knee lever to lift the sewing foot
Press the knee lever (3) to raise the sewing foot. Release the knee
lever to lower the sewing foot.
Caution!
The machine should not be running when the sewing foot is raised
more than 6 mm over the stitch plate. On a running machine, the
needle bar with the needle holder could collide with the sewing foot or
in the press pad with the double-needle machines.
Automatic and pedal lifting of the sewing foot
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For sewing machines equipped with position drives, the sewing
foot lifting process can be triggered by pressing the pedal (4) down
backwards to position -1. The sewing foot is raised to its top dead
centre point using either the integrated electro-magnet or the
pneumatic cylinder. The sewing foot is lowered after the pedal is
released.
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The machine can be set so that the sewing foot is automatically
raised after each machine stop and no backwards pedal press is
required. In this case, after pressing the pedal the sewing foot is
lowered to position +1. After the seam is completed, the sewing
foot remains permanently raised (see chapter 8). This setting is
described in chapters 6, 7, 8, and 9.
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