JUKI DDL-8000A Engineer's Manual

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Adjustment Procedure Results of Improper Adjustment
4) 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ma-
terial
○ 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 ❹.
When P161 is set to "1", the assist function is activated.
○ Iftheautomaticpresserlifter
❹
is not used, set the presser foot
pressure to a lower level to make
it easier for the thread between
the presser and material to be
sewed to come out. (The recom-
mended presser foot pressure is
30 N (3 kg) or less.)
Adjust the presser foot pressure
and the sewing speed appro-
priatelytopreventinsufcient
feedefciencyduetojumpingor
other faults of the presser foot.
Conrmtheadjustmentresultby
actually sewing the material.
1. Press .
2. Press the
switch to select the item number in the table.
3. Press the
switch to activate the setting section, and press the switch to adjust
the value.
4.
Press the
switch to determine your selection.
No. Items Description Range
Initial
value
P161
Presser lifting operation at
holding thread ON/ OFF
Selects ON or OFF of the presser
lifting operation when the thread is
held.
1 : Lifting operation activated
0 : Lifting operation deactivated
0 to 1 0
P162
Angle at start of presser lifting
operation starts when the thread
is held
Sets the angle at the start of the
presser lifting operation when the
thread is held.
0 to 359 100
P164
Setting of presser lifting amount
at holding thread
Sets the amount of the presser
lifting movement when the thread
is held.
0 to 500 340
P165
Presser lifting operation time
when the thread is held
Sets the presser lifting operation
time when the thread is held.
1 to 990 20

JUKI DDL-8000A Specifications

General

Stitch Type	Lockstitch
Motor Type	Direct-drive motor
Thread Trimmer	Automatic
Max. Stitch Length	5mm
Needle Bar Stroke	30.7mm
Lift of the Presser Foot	By hand: 5.5mm, By knee: 13mm
Control Panel	Digital
Lubrication	Automatic