Adjustment Of The Thread Tail After The Trimming; Adjustment Of The Upper Thread Tension Release; Adjustment Of The Opening Time Of The Upper Thread Tension Release Disks - Mitsubishi Electric PLK-G5050R Technical Manual

7-17. Adjustment of the thread tail after the trimming

(1) Adjust the thread tail with the pre-tension (No.1).
(2) When turning the nut clockwise, the thread tail becomes shorter.
When turning the nut counterclockwise, the thread tail becomes
longer.
7-18. Adjustment of the upper thread tension release (the width between thread tension discs)
(1) When the upper thread tension is released, the thread tension discs (No.1) open in 0.8mm to 1.0mm,
which is standard width.
(2) For the adjustment of the upper thread release, loosen the set screw (No.2) and move the whole
upper thread tension release to the arrow direction as shown on the figure. When moving the upper
thread tension release to the direction "A", the width between the discs becomes bigger and moving to
the "B", the width between the discs becomes smaller.

7-19. Adjustment of the opening time of the upper thread tension release disks

When the presser foot rises, the thread tension disks are open for a given length of time and close. The
default setting is set at one-minute intervals. To change the set value, carry out the procedure shown
below.
(1) Turn the power switch on.
(2) Press the on the standard screen to open the MENU mode.
(3) Press the
at presser] in order.
(4) Current set value is "60 sec".
(5) Change the value from 0 to 10000 then press the
If change the value to "0" the thread tension disks closed when the presser foot rises.
(6) Press the >
B
A
<2>
<1>: Thread tension disc <2>: Set screw
> >
. Changing set value has been completed.
<1>: Pre-tension
<1>
0.8~1.0mm
[Setting for tension release outputs time length
.
- 31 -
<1>