Aligning The Light Barriers Of The Remaining Thread Monitor - Duerkopp Adler 745-26 Service Instructions Manual

15.12 Aligning the Light Barriers of the Remaining Thread Monitor

1
2
3
The light barrier mountings 3 and 6 are set at the factory so that a
sufficient safety clearance of 5-6 mm to the movings hooks is provided.
The alignment of the reflected light barriers occurs in program P51.
ATTENTION !
The remaining thread monitor is only effective when the function is
activated.
See Short Description DAC Chapter 6.2.
Checking the alignment
–
Turn the main switch on.
Activate the setting program " Setting the Underthread Monitor ".
( see Short Description DAC Chapter 6.3.1 )
–
Insert an empty bobbin into the bobbin case bottom.
–
Turn the empty bobbin manually.
–
If the infrared beam of the light barrier strikes the reflecting
surface 7 of the bobbin hub, then this is shown by an arrow
between the reflecting head and the underthread bobbin.
A signal is heard at the same time.
–
If no reflection is shown when turning the empty bobbin, then the
alignment of the light barrier is to be corrected.
–
Press the F1 key.
This exits from the setting program.
Correcting the alignment
–
Clean the lenses of the light barriers 1 and 5 and the reflecting
surfaces 7 of the bobbin hub with a soft cloth.
–
Loosen clamping screw 2 or 4.
–
Align light barrier 1 or 5 respectively by a slight movement on the
bracket 3 resp. 6.
The infra-red beam of the light barrier 1 or 5 must strike the bobbin
hub unhindered through the light opening in the bobbin case.
–
Tighten clamping screw 2 or 4.
–
Check the alignment of both light barriers again.
4
5
6
7
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