Pressure Setting For The Top Feed - Duerkopp Adler 550-12-12 Service Instructions Manual

6.2 Pressure Setting for the Top Feed

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2
3
4
5
6
7
Through spring pressure and seating of the guide block 5 on the
support angle 6, the block 7 with the top feed foot is held in the lower
position.
The correct pressure setting of the transport foot is necessary for
optimal material transport. Excess pressure hinders the working in of
additional width and can cause damage to sensitive materials.
The seating pressure on the pressure foot is to be set so that the
pressure foot sole of the feed dog movement occurs even at the
highest sewing speed.
Caution Risk of Injury !
Turn off main switch before adjusting.
Spring pressure on the guide block
–
The pressure is correctly set when the clearance between the
upper edge of the regulator screw 2 and the machine arm is 19 mm.
Pressure increase:
Pressure decrease:
Seating pressure of the pressure foot
–
The pressure is correctly set when the threaded pin 1 is flush with
the upper edge of the presser bar 4.
Pressure increase:
Pressure decrease:
Pressure of the transport foot
–
The pressure is correctly set when the clearance between upper
edge of the regulator screw 3 and the machine arm is 17 mm.
Pressure increase:
Pressure decrease:
Turn screw 2 clockwise
Turn screw 2 counter-clockwise
Screw threaded pin 1 deeper
Screw threaded pin 1 shallower
Turn screw 3 clockwise
Turn screw 3 counter-clockwise