Duerkopp Adler 745-22 Service Instructions Manual page 37

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1
2
1st needle position: Needle low position
The 1st needle position triggers the swing timing of the needle
bar link for the seam bartacking at the seam beginning and the seam
end.
The light screen 3 determines the precise swing timing through its
position. The slewing movement of the link must occur outside the
material.
3
4
5
Caution Risk of Injury !
Turn the main switch off.
Set the light screens only with the main switch turned off.
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Remove the cover of the synchronizer after loosening the
mounting screws.
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Loosen clamping screw 5.
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Turn light screen 4.
The light apertures of the light screens 3 and 4 must lie exactly
opposite each other (displaced 180°).
Attention!
When turning light screen 4 light screen 3 should not also turn.
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Tighten clamping screw 5.
ATTENTION !
The light screens should not turn when the clamping screw 5 is turned.
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Turn the main switch on.
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Set the "Program" switch to "67".
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Press the "STOP" key
The program is activated.
The left half of the display shows "SW".
–
Preselect the rpm of the sewing drive with the "Program" switch.
Set the "Program" switch to "13" (maximum rpm ).
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Press the " " key and release again.
The machine head positions in the 1st needle position.
–
Check the positioning again.
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