JUKI DDL-8100B-7 Series User manual

DDL-8100B-7 Series
INSTRUCTION MANUAL

i
CONTENTS
I. SPECIFICATIONS........................................................................................ 1
II. SET-UP........................................................................................................ 3
1. Installation ..........................................................................................................................................3
2. Installing the pedal sensor................................................................................................................ 4
3. Connecting the connector................................................................................................................. 4
4. How to install the power plug ........................................................................................................... 5
5. Attaching the connecting rod ........................................................................................................... 5
6. Winding the bobbin thread................................................................................................................ 6
7. Adjusting the height of the knee lifter.............................................................................................. 7
8. Installing the thread stand ................................................................................................................ 7
9. Lubrication..........................................................................................................................................8
10. Adjusting the amount of oil (oil splashes)....................................................................................... 8
11. Attaching the needle ........................................................................................................................ 10
12. Setting the bobbin into the bobbin case........................................................................................ 11
13. Adjusting the stitch length.............................................................................................................. 11
14. Presser foot pressure ...................................................................................................................... 11
15. Hand lifter ......................................................................................................................................... 11
16. Adjusting the height of the presser bar .........................................................................................12
17. Threading the machine head .......................................................................................................... 12
18. Thread tension ................................................................................................................................. 13
19. Thread take-up spring ..................................................................................................................... 13
20. Adjusting the thread take-up stroke............................................................................................... 13
21. Needle-to-hook relationship............................................................................................................ 14
22. Height of the feed dog ..................................................................................................................... 14
23. Tilt of the feed dog ...........................................................................................................................15
24. Adjusting the feed timing ................................................................................................................ 15
25. Cunter knife ......................................................................................................................................16
26. Pedal pressure and pedal stroke.................................................................................................... 16
27. Adjustment of the pedal .................................................................................................................. 17
28. Marker dots on the handwheel ....................................................................................................... 17
III. FOR THE OPERATOR............................................................................. 18
1. Operating procedure of the sewing machine ................................................................................18
2. Operation panel built in the machine head.................................................................................... 19
3. Operating procedure of the sewing pattern ..................................................................................20
4. Setting of functions .........................................................................................................................22
5. Digital types operation .................................................................................................................... 23
6. User Parameter & Technician Parameter ....................................................................................... 23
7. Details of setting of the main functions.........................................................................................26
8. Stitch balance of back-tacking for lockstitch machine ................................................................29
9. Error code list...................................................................................................................................32

– 1 –
Supply voltage Single phase 220V
Frequency 50Hz/60Hz
Operating environment Temperature : 5 to 35˚C
Humidity 35 - 85 % or less
Input 210VA
Max. sewing speed 4,000 sti/min
Thread trimming speed 210 sti/min
Stitch length 5 mm
Presser foot lift (by knee lifter) 13 mm
Needle DB x 1 (#14) #14 to 18
Lubricating oil JUKI MACHINE OIL #7
I. SPECIFICATIONS

– 2 –
40±0.5通し穴
DRAWING OF TABLE
4-ϕ3.4 bottom surface, depth 20
2-ø3.5 bottom surface, depth 10
(Hinge side only)
depth 10
depth 30
Installing position of drawer stopper
(on the reverse side)
(Drill a hole at the time of set-up.)
ϕ18 Drilled hole
ϕ40 ±0.5 Drilled hole
3-ϕ13
Drilled hole

– 3 –
❼
❽
❶
❷
❹
❸
AB
❶❶
❸
❸
❽
❼
❻
❾
󱢵
󱢳
󱢴
1) Carry the sewing machine with two persons as
shown in the gure above.
(Caution) Do not hold the handwheel.
2) Do not put protruding articles such as the screw-
driver and the like at the location where the
sewing machine is placed.
3) Adjust so that the oil pan is supported at the four
corners of the table. Mount rubber hinge seat ❽
on the table and x it on the table with a nail.
4 ) Two rubber seats ❶for supporting the head por-
tion on the operator side A are xed on the ex-
tended portion of the table by hitting the nail ❷,
and the other two rubber cushion seats ❸on the
hinge side B are xed by using a rubber-based
adhesive. Then, oil pan ❹is placed.
5) Fit knee lifter pressing rod ❻. Fit hinge ❼ into the opening in the machine bed, and t the machine head
to table rubber hinge ❽before placing the machine head on cushions ❾on the four corners.
6) Securely attach head support rod 󱢳to the table until it goes no further.
* Be sure to install the machine head support bar supplied with the unit.
7) Draw out cable 󱢴of the control box through cable draw-out hole 󱢵to route it to the underside of the
sewing machine table.
23.5mm 19.5mm
II. SET-UP
1. Installation

– 4 –
❶
Connector connection diagram
Auto-lifter
Solenoid &
LED/TB unit
Pedal
AC power
supply input
Underside of the table
The explanation applies to the case the pedal sensor
is installed on the table for the DDL-8100B-7.
1) Install the pedal sensor to the table with mounting
screws ❶supplied with the unit. It is necessary
to install the pedal sensor at such a position that
the connecting rod is perpendicular to the table.
2) After the completion of installation of the pedal
sensor on the table, place the sewing machine
head on the table.
WARNING :
• To protect against personal injury resulting from abrupt start of the sewing machine, be sure to turn the
power OFF, unplug the machine and wait for ve minutes or more before installing the pedal sensor.
• To prevent damage of device caused by maloperation and wrong specications, be sure to connect
all the corresponding connectors to the specied places. (If any of the connectors is inserted into a
wrong connector, not only the device corresponding to the connector can break but also it can start
abruptly, inviting the risk of personal injury.)
• To prevent personal injury caused by maloperation, be sure to lock the connector with lock.
• As for the details of handling respective devices, read carefully the Instruction Manuals supplied
with the devices before handling the devices.
AC cable
Pedal sensor cable
Staples
Pedal sensor
Do not insert the power plug into the wall
outlet.
Check to be sure that the power switch is
turned OFF.
1) Connect pedal sensor cable ❶ and AC input
cable ❷supplied with the unit to the control box.
Refer to the connector connection diagram for
connecting ports of the cables.
Be sure to fully insert the connectors into
the corresponding ports until they are
locked.
2) Fix the pedal cable and AC input cable
with a staple.
❶
❷
2. Installing the pedal sensor
3. Connecting the connector

– 5 –
Fix connecting rod ❶to installing hole Bof pedal
lever ❷with nut ❸.
❶
❹❸
❸
❶
1ø 220V to 240V AC
220V to
240V
Blue
Brown
Green / Yellow
(ground wire)
WARNING :
1. Be sure to attach the ground wire (green/yellow) to the specied location (on the ground side).
2. Take care not to allow terminals to come in contact with each other.
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and a lapse of 5 minutes or more.
4. How to install the power plug
1) Connect the power cord to the power plug.
As shown in the gure, connect the brown and
blue wires to the power supply side and the
green/yellow one to the grounding side.
1. Be sure to prepare the power plug ❶
which conforms to the safety standard.
2. Be sure to connect the ground lead
(green/yellow) to the grounding side.
2) Check that the power switch is in the OFF state.
Then, insert the power plug coming from the pow-
er switch into the plug receptacle.
In prior to the connection of the power plug,
re-check the supply voltage specication
indicated on the control box.
5. Attaching the connecting rod

– 6 –
1) Insert the bobbin deep into the bobbin winder
spindle ❶until it will go no further.
2) Pass the bobbin thread pulled out from the
spool rested on the right side of the thread stand
following the order as shown in the gure on the
left. Then, wind clockwise the end of the bobbin
thread on the bobbin several times.
(In case of the aluminum bobbin, after winding
clockwise the end of the bobbin thread, wind
counterclockwise the thread coming from the
bobbin thread tension several times to wind the
bobbin thread with ease.)
3) Press the bobbin winder trip latch ❷in the direc-
tion of Aand start the sewing machine. The bob-
bin rotates in the direction of Cand the bobbin
thread is wound up. The bobbin winder spindle ❶
automatically as soon as the winding is nished.
4) Remove the bobbin and cut the bobbin thread
with the thread cut retainer ❸.
5) When adjusting the winding amount of the bobbin
thread, loosen setscrew ❹and move bobbin
winding lever ❷to the direction of Aor B. Then
tighten setscrew ❹.
To the direction of A: Decrease
To the direction of B: Increase
6) In case that the bobbin thread is not wound evenly on the bobbin, remove the handwheel, loosen screw
❺and adjust the height of bobbin thread tension ❽.
• It is the standard that the center of the bobbin is as high as the center of thread tension disk ❻.
• Adjust the position of thread tension disk ❻to the direction of Dwhen the winding amount of the bobbin
thread on the lower part of the bobbin is excessive and to the direction Ewhen the winding amount of the
bobbin thread on the upper part of the bobbin is excessive.
After the adjustment, tighten screw ❺.
7) To adjust the tension of the bobbin winder, turn the thread tension nut ❼.
1. When winding the bobbin thread, start the winding in the state that the thread between the
bobbin and thread tension disk ❻is tense.
2. When winding the bobbin thread in the state that sewing is not performed, remove the needle
thread from the thread path of thread take-up and remove the bobbin from the hook.
3. There is the possibility that the thread pulled out from the thread stand is loosened due to
the inuence (direction) of the wind and may be entangled in the handwheel. Be careful of the
direction of the wind.
6. Winding the bobbin thread
D
E
B
❸
❶
❻
❼
❻
❺
❻
A
C
❽
❹
❷

– 7 –
7. Adjusting the height of the knee lifter
1) The standard height of the presser foot lifted using the knee lifter is 10 mm.
2) You can adjust the presser foot lift up to 13 mm using knee lifter adjust screw ❶.
3) When you have adjusted the presser foot lift to over 10 mm, be sure that the bottom end of needle bar ❷
in its lowest position does not hit presser foot ❸.
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.
8. Installing the thread stand
1) Assemble the thread stand unit, and insert it in
the hole in the machine table.
2) Tighten nut ❶.
❶❷
❸
❶

– 8 –
WARNING :
1. Do not connect the power plug until the lubrication has been completed so as to prevent
accidents due to abrupt start of the sewing machine,
2. To prevent the occurrence of an inammation or rash, immediately wash the related portions if
oil adheres to your eyes or other parts of your body.
3. If oil is mistakenly swallowed, diarrhea or vomitting may occur. Put oil in a place where children
cannot reach.
① Amount of oil (oil splashes) conrmation paper ② Position to conrm the amount of oil (oil splashes)
Oil splashes conrmation paper
3 - 10 mm
25 mm
70 mm
* When carrying out the procedure described below in 2, remove the slide plate and take extreme caution
not to allow your ngers to come in contact with the hook.
1) If the machine has not been sufciently warmed up for operation, make the machine run idle for approxi-
mately three minutes. (Moderate intermittent operation)
2) Place the amount of oil (oil spots) conrmation paper under the hook immediately after the machine stops
running.
3) Conrm the height of the oil surface in the oil reservoir is within the range between “HIGH” and “LOW”.
4) Conrmation of the amount of oil should be completed in ve seconds. (Check the period of time with a
watch.)
WARNING :
Be extremely careful about the operation of the machine since the amount of oil has to be checked
by turning the hook at a high speed.
10. Adjusting the amount of oil (oil splashes)
(1) Conrmation of the amount of oil in the hook
❶
A
B
❷
1) Before starting the sewing machine, ll oil pan ❶
with JUKI MACHINE OIL #7 up to HIGH mark A.
2) Add oil before the oil surface comes down to
reach the LOW mark B.
3) When you operate the machine after lubrication,
you will see splashing oil through oil sight window
❷if the lubrication is adequate.
4) Note that the amount of the splashing oil is unre-
lated to the amount of the lubricating oil.
1. When you use a new sewing machine or a sewing machine after an extended period of disuse,
use the sewing machine after performing break-in at 2,000 sti/min or less.
2. For the oil lubrication, purchase JUKI NEW DEFRIX OIL No. 1 (Part No. : MDFRX1600C0) or
JUKI MACHINE OIL #7 (Part No. : MML007600CA).
3. Be sure to lubricate clean oil.
4. When the oil surface is lower than the LOW mark, the oiling may be inconsistent. To prevent
inconsistent oiling, add oil before the oil surface comes down to reach the LOW mark.
9. Lubrication
Closely fit the
paper against the
wall surface of the
bed.