Upper-Thread Tensioner Release - Duerkopp Adler 743-221 Service Manual

2.4

Upper-thread tensioner release

1
2
3
Regulation and inspection
The cylinder 2 must open the tension discs 1 by about 1 mm.
When closed, the tension discs 1 must keep the upper thread securely
under tension.
–
Turn the "program" switch to 64.
–
Press "STOP" button.
The program is activated.
–
Turn "program" switch to 24.
Switch on solenoid valve s24 by pressing the " " button.
The upper-thread tensioner opens.
–
Check distance between tension discs 1.
Caution: danger of injury
Turn off the main switch.
The upper-thread tensioner release may only be adjusted with the
motor-protection switch turned off.
Adjustment
–
Slightly undo screw 3.
–
Move cylinder 2.
With the upper-thread tensioner open there should be a distance
of 1 mm between the tension discs 1.
The distance can be checked with a gauge (see section 2.1 no. 3).
–
Retighten screw 3.
7