Operation
Operating Instructions M-TYPE DELTA - 01.0 - 08/2019 39
To change the bobbin:
1. Swivel up the bobbin case retainer (1).
2. Remove the empty bobbin.
3. Insert a full bobbin:
Important
Insert the bobbin so that it moves in the opposite direction of
the hook when the thread is pulled out.
4. Feed the hook thread through the slot (5) in the bobbin case
retainer.
5. Pull the hook thread under the tension spring (4).
6. Feed the hook thread through the slot (2) and pull it approx.
3 cm further.
7. Close the bobbin case retainer (1).
Fig. 17: Changing the bobbin (2), Remaining thread monitor message
Machines with automatic remaining thread monitor
If the hook thread needs to be replaced, the LED indicator
lamp (7) lights up on the machine arm.
Important
Each of the bobbins has a thread supply groove that is embedded
in the bobbin core.
Insert the bobbin in the hook in such a way that the thread supply
groove faces down. Otherwise, the remaining thread monitor will
not work.
(7) - LED
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