– 69 –
[Response to problems occurring at the beginning of sewing]
• In the case needle thread breakage occurs when using a thin thread or fragile thread
• In the case needle thread is not tucked on the wrong side of material
• In the case needle thread breakage occurs when starting sewing from the material end (such as sewing the
material with needle thread tucked on the undersurface of material)
If any of the aforementioned problems occurs, the assist function which works to reduce the presser foot
pressure at the beginning of sewing can be set by using the auto-lifter device (AK-154)
* The AK-154 can be optionally installed. (Part number: 40174617)
* In the case the AK-154 is not used, the presser foot pressure should be reduced to allow the needle thread
to be released smoothly. (The recommended presser foot pressure is 30 N (3 kg) or less.)
Adjust the presser foot pressure and the sewing speed appropriately to prevent insufficient feed efficiency
due to jumping or other faults of the presser foot. Confirm the adjustment result by actually sewing the ma
-
terial.
3) Move the cursor to
”
U290
”
by pressing
❶
. Input the lifting time using
with
❷
.
Factory-set value : 20
Adjustable range : 0 to 50
The longer the lifting time is increased,
the higher the presser foot sole is brought
up above the throat plate.
[How to set up the auto-lifter function]
When installing the auto-lifter device (AK),
the function of auto-lifter is actuated.
1) Turn ON the power switch.
2) Press
❾
.
1. The amount of uplift of the presser foot above the throat plate varies according to the
material thickness of the item to be sewn and the presser foot pressure. Be sure to check
the actual condition before starting sewing.
2. If the adjustment value of the operating time of the AK-154 is increased while the presser
foot pressure is high, the operating noise will become larger. Adjust the adjustment value of
the operating time of the AK-154 and the pressure foot pressure while visually checking the
needle thread.
❾
❷
❶
Содержание DDL-9000C-S Series
Страница 1: ...DDL 9000C S INSTRUCTION MANUAL ...