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11. ADJUSTMENT
126
KE-430F, BE-438F
3
Use a tension gauge to measure the upper thread tension as shown
in the illustration at left.
Press the or key to increase or decrease the value appearing
in the menu display until it corresponds with the measurement value.
* Round off any decimal places in the measurement value.
* The units for the measurement values which are input to the
operation panel are “gf”. If the values are measured using units of
“N”, convert using a factor of 1 N ≒ 100 gf.
* The value will illuminate in the menu display, and it will change to
flashing if it is increased or decreased.
4
1. Press the ENTER key.
2. Open the tension discs and then close them again.
・ "tEn" will illuminate in the PROGRAM No. display, the number of
the measurement will illuminate in the SECTION No. display, and
the allowable setting range will illuminate in the menu display.
(Refer to the table below.)
* The value in the menu display may vary for individual sewing
machines.
NOTE:
If you need to enter a value which is greater than the allowable setting
range in the table, problems may occur with the digital tension.
Refer to “11-16. Adjusting the tension release amount” and then
repeat the procedure from step 1.
5
Repeat steps 3 and 4 to set the 2nd to 4th measurements of the upper thread tension.
6
When the ENTER key is pressed after the 4th measurement, “END”
will appear in the menu display and the tension discs will open.
7
Turn off the power switch.
SECTION No. display
Standard
value (gf)
Allowable setting
range (gf)
1st 20
[0～39]
2nd 80
[40～119]
3rd 180
[120～239]
4th 330
[240～419]
2820B 2821B
For example, if the upper thread
tension is 28 gf
2414B
2822B
2819B
Number of measurement
Setting value