Thread Take-Up Spring - DURKOPP ADLER 806 Service Instructions Manual

2.7

Thread take-up spring

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24
Caution: Risk of Injury !
The machine must be in the position "Secured stop of motors".
Rule and control
Adjust the travel and the tension of the thread take-up spring in a way
that at the moment when the spring reaches its lowest position, the
eye of the stitching needle is disappearing in the fabric.
–
Lower the sewing head by the function "Lifting/lowering the
sewing head".
–
Select the "speed" function.
–
Enter the value 70 by the numerical keys and confirm by the
RETURN key.
–
Press key "F2" for starting the sewing process.
–
Watch the thread take-up spring.
–
Press key "F3" for stopping the sewing machine head.
Correcting the travel
–
Loosen slightly the screw 2 on the arm 1 by using a hexagonal
screw spanner.
–
By means of the bolt 1, turn the entire thread tension unit
accordingly.
–
Tighten screw 2.
Correcting the tension
–
Press the key "O".
"Safe motor stop " will be switched on.
–
Loosen the screw 2 on the arm 1.
–
Pull out the thread tension unit.
–
Loosen the screw 4.
–
Turn the bolt 3 accordingly.
–
Tighten the screw 4.
–
Replace the thread tension unit.
4
–
Tighten the screw 2.
1
2