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12
Tension release and tension control
.04.12
Requirement
1. When lever 1 is raised, or when the automatic presser foot lift is activated and for
materials less than 2 mm thick, the two tension disks 10 should be at least 0.5 mm
apart.
2. When the feed band is touching the material, for materials over 2 mm thick, the second
thread tension unit 11 should be switched on ( solenoid 8 is released ).
Fig. 12 - 12
Raise lever 1 and adjust screw 2 ( nut 3 ) in accordance with requirement 1.
Raise the feed band with the automatic presser foot lift or with the knee lever and adjust
catch 4 ( screw 5 ) in accordance with requirement 1.
Adjust switch lug 6 ( screw 7 ) in accordance with requirement 2.
Press solenoid 8 as far as possible.
Adjust solenoid 8 ( screws 9 ) in accordance with requirement 1.
10
0,5 mm
2
3
5
1
The position of the tension release unit can be changed with parameter "308",
see Chapter 12.06 Parameter settings.
The setting in requirement 2 is a basic setting, which can be changed
depending on the material thickness.
9
11
4
Adjustment
8
7
6
12 - 14
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