Switching The Thread Tensioners On/Off - DURKOPP ADLER 838 Instruction Manual

6.5 Activating and deactivating the thread tension
Correct thread interlacing in the center
of the sewing material
Needle thread tension too weak
Hook thread tension too strong.
Needle thread tension too strong
Hook thread tension too weak.
–
The pre-tensioner (1) should never be deactivated.
–
The main tensioner (3) and supplementary tensioner (2) are
switched off using an electro-pneumatic cylinder.
Deactivation can result from:
·
Pressing the button (4) (see chapter 6.4.2).
·
Trimming cycle: during the cutting process, the main tensioner (3)
and the supplementary tensioner (2) are temporarily turned off.
·
The sewing foot lift (see chapter 6.5.1).
or
or
GB
1
2
3
4
13