JUKI DDL-900B - Setting of Thread Clamp (NB Type Only)

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8. Setting of thread clamp (NB type only)
* State at the time of shipment from the factory is ON for NB equipment.
1. Turn the power ON while keeping switch 󱢸
held pressed.
The indication on the display section is changed
to "n. ".
The numeric character displayed on the right side
of "n. " represents the function setting number.
2. Press and switches ❾ to change the num-
ber of function setting.
* and switches ❾' (two switches on the
left) are used for changing the number in the
"fast-feed" mode.
3. Press switch 󱢹 to change the setting.
The indication is changed to the set value. (The
default value has been factory-set to "1" (wiper).)
4. Press and switches ❾ to change the set
value to "0" (thread clamp).
5. Press switch 󱢹 to conrm the set value.
6. The display returns to the state described in 1.
To additionally change the set value for other
function setting numbers, repeat the steps of
procedure from 2.
* Thread clamp operation can be set by means
of function setting number 15.
0 : Thread clamp does not operate.
1 : Thread clamp operates.
7. When you have completed the set value chang-
ing, press switch 󱢳. The sewing machine is
restored to its normal sewing state.
⇩
⇩
󱢸󱢳 󱢵󱢹 ❾
❾'
[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 (AK85B)
* The AK85B can be optionally installed. (Part number: 40188851)
* In the case the AK85B 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 insufcient feed efcien-
cy due to jumping or other faults of the presser foot. Conrm the adjustment result by actually sewing the
material.