4-8. ASSEMBLY AND FUNCTIONS OF THREAD DETECTOR
1) FUNCTIONS OF THREAD DETECTOR
Detection of the breaks of upper or lower threads prevents ill quality embroidery. The thread- break detector
unit contains rollers that sense the smooth feeding of the thread. Any dust, thread remnants, etc. will interfere
the rollers’ rotation and may cause wrong detection.
2) DISASSEMBLING THREAD DETECTOR
You will need to disassemble the thread-break detector unit to clean. Remove the cover of the thread tension
adjusting plate, separate the cables and unfasten the roller base joint screw. The entire unit will be
disassembled including the rollers and bush bearing.
[Fig.4-29]
Film
Roller base
Bush bearing
Roller base screw
Thread
detector roller
[CAUTION]
Make sure to correctly place the thread detecting roller to have the unit properly function. Check between the
sensor groove and the film. If needed, unfasten the board base screw to adjust the board.
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