3.2 Aligning the light barriers of the bobbin thread monitor
Standard checking
The light barrier holders 3 and 5 are adjusted by the manufacturer in
such a way that there is a sufficient safety distance of 3,5 mm between
the revolving hooks and the light barriers 2 and 6.
ATTENTION !
The bobbin thread monitor is only effective when the function is
activated. Activated with parameter 408 =1
(see the programming instructions, chapter 4 “Structure of menu”).
–
Switch on the main switch.
–
Choose “Multitest 953“
(see programming instructions, chapter 4 “Structure of menu”).
–
Remove the bobbin case top part with bobbin.
–
Insert an empty bobbin in the bobbin case bottom part.
ATTENTION !
External light influences the sensitivity of the light barrier.
37
1
3
2
1
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