77
13.1.4) Adjusting Trimmer Return Spring
1) Function
The trimmer return spring detects whether the movable blade has returned to its correct position after
trimming. If the blade has not returned, it stops the machine to prevent damages on the needle and the blade.
2) Adjustment
Adjust the position of the sensor and the sensor unit so that the left edge (
“
side A
”
) of the sensor unit is at
the center of the left sensor when the movable blade is in its correct position (see picture A of Figure.).
13.2) ADJUSTING THE UPPER THREAD HOLDING UNIT
1) Checking the assembly of upper thread holding lever and upper thread holder plate
①
Stroke of the upper thread holder driver plate in the upper thread holder base should be 1mm from
the base when the upper thread holding solenoid is on.
②
If the space is shorter than 1mm, adjust the position of the upper thread holding solenoid up and
down so that the stroke of the plate is 1mm.
③
If the solenoid is not adjusted with the above measure, you must adjust the position of the upper
thread holding lever.
④
To adjust the upper thread holding lever, remove the arm protection plate from the arm. Adjust the
upper thread holding solenoid over the center, and unscrew the lever. Support the arm protection
plate with a flat plate so the lever touches the flat plate. Fasten the screw of the upper thread holding
lever. Make sure that the upper thread holding lever is touching the axis of the upper thread holding
solenoid.
⑤
Check if the lever moves smoothly left and right when you manually operate it.
⑥
Install the arm guard plate and go through
①
and
②
to complete.
Trimmer shaft
Sensor
Side “A”
picture A
picture B
Sensor unit
Содержание SWF/TA-WJ614-100
Страница 51: ...52 6 Frill bobbin embroidery User direction 7 Standing bobbin embroidery User direction ...
Страница 60: ...61 11 1 2 Outside the Control Box Terminal for tape reader and winder Fuse for picker solenoid power ...
Страница 63: ...64 11 4 TRIMMING MOTOR DRIVE DC power Signal cable Motor control cable AC power ...