Switching On The Machine; Setting The Needle Thread Tension - DURKOPP ADLER 550-532 Instruction Manual

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5.2 Switching on the machine

1. Main switch ON.
 The last seam pattern sewn is loaded and the seam pattern
number is shown in the Program display.

5.3 Setting the needle thread tension

Fig. 3: Setting the needle thread tension
①
(1) - Preliminary tensioner
Preliminary tension of the needle thread
With an open primary tensioner (2) a small amount of residual
tension of the needle thread is required. The residual tension is
generated by the preliminary tensioner (1).
The preliminary tension also affects the length of the cut needle
thread end (starting thread for the next seam).
1. Turn the preliminary tensioner (1) clockwise (- direction) for
a shorter starting thread.
2. Turn the preliminary tensioner (1) counterclockwise
(+ direction) for a longer starting thread.
Operation of the sewing automat
②
(2) - Primary tensioner
Instruction manual 550-532 - 00.0 - 07/2015