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THREAD –BREAK DETECTING UNIT
The thread-break detecting unit contains rollers which sense the smooth rotation of the thread which
determines if there has been a break in the upper or lower thread. Any dust, thread remnants, etc. will
interfere with the roller’s rotation and prevent detection of broken thread. Therefore, It is important to
always keep the rollers and bush bearings clean and free of dust and dirt.
To clean the thread-break detecting unit, remove the cover of the thread tension adjusting plate, separate the
cables and unscrew the roller base joint screw.
Use a soft brush of canned air to clean the rollers and bush bearings and then reassemble the unit.
Roller Base Screw
Thread Detecting Roller
Bush Bearing
Roller Base
Film
NOTICE
Be sure to place the thread detecting board in the correct position or the unit will
not operate.