9. Thread Tension Lift
9.1 Thread Tension Opening
Standard checking
The thread tension is opened,
–
when the knee lever is operated.
–
when the sewing feet are raised w ith the pedal by sewing machines
with“RAP”and“FLP”.
–
during the thread trimming sequence.
Check whether the tension discs are open when performing the
above functions.
Caution Risk of Injury !
Turnthemainswitchoff!
Set the thread tension opening only with the sewing machine
turned off.
The opening with the magnet is set with the sewing machine
turned on.
Conduct the setting only with the greatest possible caution !
Correction
Opening w ith t he magnet
–
Loosen screw 4.
–
Set the position of the wire 3.
The clearance between the carrier plate 2 and the arm 1 should be
0.5 mm when the thread tension is open.
–
Tighten screw 4 again.
Opening w ith t he knee lever
–
Loosen screw 5.
–
Move lever 6 axially on the shaft.
The clearance between the carrier plate 2 and the arm 1 should be
0.5 mm when the thread tension is open.
The lever 6 should not be turned on the shaft because the
previously set lift limitation would be c hanged.
–
Tighten screw 5 again.
39
GB
1
2
3
4
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