Operation Manual

Operation
Operating manual 100-69 version 00.0 - 05/2013
34
5.7 Residual thread monitor
The residual thread monitor monitors the left and right hook thread bobbin
with the infrared reflected light barriers (1) and (2).
Fig. 17: Residual thread monitor:
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 screen of the control unit will display the following message.
Fig. 18: Message display
Risk of injury
Turn the main switch off.
Clean the lenses of the light barriers only with the
sewing unit switched off.
WARNING
(1) - Light barrier 1
(2) - Light barrier 2
(3) - Reflecting surface
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