DURKOPP ADLER 969 ECO Operating Manual page 40

38
Adjusting the needle thread tension on Eco machines
On Eco machines, a second tension can be activated while
sewing. Thread tension is always the total tension of all three
tensioners.
Fig. 19: Adjusting the needle thread tension on Eco machines
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(1) - Additional tensioner
(2) - Primary tensioner
1. Set the pre-tensioner (3) so the needle thread is slightly ten-
sioned after it.
2. Set the auxiliary tensioner (1) so the tension it creates is
always much less than the tension created by the primary
tensioner (2).
ATTENTION
Risk of thread popping out if auxiliary tension is too high.
If the auxiliary tensioner (1) applies too much tension, the
thread can pop out of the auxiliary tensioner while sewing,
which suddenly reduces overall tension.
Make sure the auxiliary tensioner (1) is not set too high.
(3) - Preliminary tensioner
Operating manual 969 - 00.0 - 08/2014
Operation
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