3. Functions and operation of the optional equipment
In this chapter the function and the operation of the most important
optional equipment is described.
3.1 Remaining thread monitor
The remaining thread monitor monitors the left and right hook thread
bobbin with the infrared reflected light barriers 1 and 2.
–
When the bobbin is empty, the light beam transmitted by the light
barrier 1 or 2 is reflected by the exposed reflecting surface 3 of the
bobbin hub.
–
The display of the control box shows the message “Info 3220"
Additionally a flashing symbol indicate the position o f the empty
bobbin.
left bobbin empty right bobbin empty
–
The pocket opening is safely finished with the thread in the reserve
groove of the bobbin hub.
Caution: Danger of injury!
Switchthemainswitchoff.
Clean the lenses of the light barriers only with the sewing unit
switched off.
–
Switchthemainswitchoff.
–
Clean the lenses of the light barrier with a soft cloth after every
bobbin change.
–
Switchthemainswitchon.
–
Start a new sewing cycle.
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