JUKI DDL-8100e Manuale utente

DDL-8100e DDL-8100eH

INSTRUCTION MANUAL

ENGLISH

CONTENTS

1. SPECIFICATIONS ....................................................................................................... 1

2. INSTALLATION ........................................................................................................... 1

3. INSTALLING THE BELT COVER AND THE BOBBIN WINDER................................ 2

4. ADJUSTING THE HEIGHT OF THE KNEE LIFTER................................................... 3

5. INSTALLING THE THREAD STAND .......................................................................... 3

6. LUBRICATION ............................................................................................................ 4

7. ADJUSTING THE AMOUNT OF OIL (OIL SPLASHES) IN THE HOOK .................... 5

8. ATTACHING THE NEEDLE......................................................................................... 6

9. SETTING THE BOBBIN INTO THE BOBBIN CASE .................................................. 6

10. ADJUSTING THE STITCH LENGTH .......................................................................... 7

11. PRESSER FOOT PRESSURE .................................................................................... 7

12. HAND LIFTER ............................................................................................................. 7

13. ADJUSTING THE HEIGHT OF THE PRESSER BAR ................................................ 7

14. THREADING THE MACHINE HEAD .......................................................................... 8

15. THREAD TENSION ..................................................................................................... 8

16. THREAD TAKE-UP SPRING....................................................................................... 9

17. ADJUSTING THE THREAD TAKE-UP STROKE ....................................................... 9

18. NEEDLE-TO-HOOK RELATIONSHIP....................................................................... 10

19. HEIGHT OF THE FEED DOG ................................................................................... 11

20. TILT OF THE FEED DOG.......................................................................................... 11

21. ADJUSTING THE FEED TIMING.............................................................................. 12

22. MOTOR PULLEYS AND BELTS............................................................................... 12

– 1 –

1. SPECIFICATIONS

(1) Installing the oil pan

1) The under cover should rest on the four corners of the machine table groove.

2) Two rubber seats 1for supporting the head portion on the operator side A are xed on the extended

portion of the table by hitting the nail 2, and the other two rubber cushion seats 3on the hinge side

B are xed by using a rubber-based adhesive. Then, oil pan 4is placed.

3) Fit hinge 1 into the opening in the machine bed, and t the machine head to table rubber hinge 2be-

fore placing the machine head on cushions 3on the four corners.

2. INSTALLATION

DDL-8100e DDL-8100eH

Application General fabrics, light-weight

and medium-weight materials

Medium-weight materials,

heavy-weight materials

Sewing speed Max. 4,500 sti/min Max. 4,000 sti/min

Stitch length Max. 5 mm

Needle DB x 1 #9 to #18 DA x 1 #20 to #23

Presser foot lift (by knee lifter) 10 mm (standard) 13 mm (Max.)

Lubricating oil JUKI MACHINE OIL #7

Noise

Equivalent

continuous emission sound pressure level (L

) at the workstation:

A-weighted value of 80 dB; (Includes K

=2.5dB); according to ISO 10821 - C.6.2-

ISO 11204 GR2 at 4,200 sti/min.

18.5 mm

22.5 mm

– 2 –

(1) Installation procedure

1) Drill four guiding holes A, B, Cand Dfor wood-

en screws in the table.

2) Insert support 1of the belt cover in the tapped

hole in the arm.

3) Pass the handwheel through the hole in belt

cover A 3, then set the handwheel on the arm. At

this time, you can smoothly install the handwheel

diagonally from the rear of the handwheel by tilt-

ing belt cover A 3 as illustrated in the gure.

4) Place belt cover B 2on guiding holes Cand D.

5) Fix belt cover A 3on the arm using screws 4,

5and washer 6. At this time, tighten screw 4

with a tightening torque of 300 N•cm and screw

5 with a tightening torque of 250 N•cm. If you

tighten further these screws, the securing state of

the belt cover will not change.

6) Fit cap 7to the belt cover A.

7) Move belt cover B 2backward until the rubber

section of belt cover B 2comes in contact with

belt cover A 3. Then, further move the belt cover

B in the same direction by 0.5 to 1 mm. Now, x

the belt cover B in position using wooden screws

and washers.

8) Fix bobbin winder 8in guiding holes Aand B

using wooden screws and washers.

3. INSTALLING THE BELT COVER AND THE BOBBIN WINDER

WARNING :

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the

machine and check to be sure that the motor has totally stopped rotating in prior.

63.5

75.5

(mm)

– 3 –

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 1.

3) When you have adjusted the presser foot lift to over 10 mm, be sure that the bottom end of needle bar

2in its lowest position does not hit presser foot 3.

4. ADJUSTING THE HEIGHT OF THE KNEE LIFTER

5. INSTALLING THE THREAD STAND

1) Assemble the thread stand unit as illustrated in

the gure shown on the left, and insert it in the

hole in the machine table.

2) Tighten locknut 1 enough to x the thread stand.

3) For ceiling wiring, pass the power cord through

spool rest rod 2.

WARNING :

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the

machine and check to be sure that the motor has totally stopped rotating in prior.

– 4 –

(2) Adjusting the amount of oil supplied

to the face plate parts

1) Adjust the amount of oil supplied to the thread

take-up and needle bar crank 2by turning adjust

pin 1.

2) The minimum amount of oil is reached when

marker dot Ais brought close to needle bar

crank 2by turning the adjust pin in direction B.

3) The maximum amount of oil is reached when

marker dot Ais brought to the position just op-

posite from the needle bar crank by turning the

adjust pin in direction C.

6. LUBRICATION

(1) Information on lubrication

1) Fill oil pan 1 with JUKI New Defrix Oil No. 1 up

to HIGH mark A.

2) When the oil level lowers below LOW mark B,

rell the oil pan with the specied oil.

3) When you operate the machine after lubrication,

you will see splashing oil through oil sight window

2 if the lubrication is adequate.

1. When you first operate your ma-

chine after setup or after an ex-

tended period of disuse, run your

machine at 3,000 sti/min to 3,500

sti/min for about 10 minutes for the

purpose of break-in.

2. When the machine is continuously

used at a low speed (2,000 sti/min

or less), make the machine run idle

at a high speed (4,000 sti/min or

more) for approximately 5 minutes

once a week. Use clean oil and

when the oil becomes dirty, replace

it with clean oil as soon as pos-

sible. When you continue to use the

machine with dirty oil, the trouble

will be caused.

Maximum Minimum

WARNING :

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the

machine and check to be sure that the motor has totally stopped rotating in prior.

– 5 –

* When carrying out the procedure described below in 2, remove the slide plate and take extreme cau-

tion 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 ap-

proximately three minutes. (Moderate intermittent operation)

2) Place the amount of oil (oil splashes) conrmation paper under the hook while the sewing machine is

in operation.

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.)

1 Amount of oil (oil splashes) conrmation paper 2 Position to conrm the amount of oil (oil splashes)

* Use any paper available regardless of the material. * Place the amount of oil (oil splashes) conrmation

paper under the hook.

7. ADJUSTING THE AMOUNT OF OIL (OIL SPLASHES) IN THE HOOK

Clo s ely fi t the

paper against

the wall surface

of the bed.

Hook

Hook driving shaft front bushing

Bed

Oil splashes

conrmation paper

3 to 10 mm

Approx. 25 mm

Approx. 70 mm

■Sample showing the appropriate amount of oil

1) The amount of oil shown in the samples on the

left should be nely adjusted in accordance with

sewing processes. Be careful not to excessively

increase/decrease the amount of oil in the hook.

(If the amount of oil is too small, the hook will be

seized (the hook will be hot). If the amount of oil

is too much, the sewing product may be stained

with oil.)

2) Adjust the amount of oil in the hook so that the

oil amount (oil splashes) should not change while

checking the oil amount three times (on the three

sheets of paper).

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.

Appropriate amount of oil

(large)

Splashes of oil from the hook

Approx.2 mm

Splashes of oil from the hook

Appropriate amount of oil

(small)

Approx.1 mm

（DDL-8100eH : 1 mm）

（DDL-8100eH : 3 mm）

– 6 –

■Adjusting the amount of oil (oil spots) in the hook

1) Turning the oil amount adjustment screw attached

on the hook driving shaft front bushing in the “+”

direction (in direction A) will increase the amount

of oil (oil spots) in the hook, or in the “–” direction

(in direction B) will decrease it.

2) After the amount of oil in the hook has been

properly adjusted with the oil amount adjustment

screw, make the sewing machine run idle for ap-

proximately 30 seconds to check the amount of

oil in the hook.

A needle of DBx1 should be used. Select a proper

needle size according to the count of thread and the

type of material used.

1) Turn the handwheel until the needle bar reaches

the highest point of its stroke.

2) Loosen screw 2, and hold needle 1with its in-

dented part A facing exactly to the right in direc-

tion B.

3) Insert the needle fully into the hole in the needle

bar in the direction of the arrow until the end of

hole is reached.

4) Securely tighten screw 2.

5) Check that long groove Cof the needle is facing

exactly to the left in direction D.

8. ATTACHING THE NEEDLE

9. SETTING THE BOBBIN INTO THE BOBBIN CASE

1) Install the bobbin in the bobbin case so that the

thread wound direction is counterclockwise.

2) Pass the thread through thread slit A, and pull

the thread in direction C.

By so doing, the thread will pass under the ten-

sion spring and come out from notch B.

3) Check that the bobbin rotates in the direction of

the arrow when thread is pulled.

WARNING :

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the

machine and check to be sure that the motor has totally stopped rotating in prior.

– 7 –

10. ADJUSTING THE STITCH LENGTH

1) Turn stitch length dial 1in the direction of the ar-

row, and align the desired number to marker dot

Aon the machine arm.

2) The dial calibration is in millimeters.

3) When you want to decrease the stitch length, turn

stitch length dial 1while pressing feed lever 2

in the direction of the arrow.

11. PRESSER FOOT PRESSURE

1) Loosen nut 2. As you turn presser spring regula-

tor 1clockwise (in direction A), the presser foot

pressure will be increased.

2) As you turn the presser spring regulator counter-

clockwise (in direction B), the pressure will be

decreased.

3) After adjustment, tighten nut 2.

4) For general fabrics, the standard height C of the

presser spring regulator is 29 to 32 mm (39.2N).

(68.6N for DDL-8100eH)

12. HAND LIFTER

1) To stop the machine with its presser foot up, turn

hand lifter 1in direction A.

2) The presser foot will go up about 5.5 mm and stop.

The presser foot will go back to its original posi-

tion when hand lifter is turned down in direction B.

3) Using the knee lifter, you can get the standard

presser foot lift of about 10 mm and the maximum

lift of about 13 mm

13. ADJUSTING THE HEIGHT OF THE PRESSER BAR

1) Loosen setscrew 1, and adjust the presser bar

height or the angle of the presser foot.

2) After adjustment, securely tighten the setscrew 1.

WARNING :

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the

machine and check to be sure that the motor has totally stopped rotating in prior.

29 to 32 mm

WARNING :

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the

machine and check to be sure that the motor has totally stopped rotating in prior.

– 8 –

15. THREAD TENSION

(1) Adjusting the needle thread tension

1) As you turn thread tension nut 1clockwise (in

direction A), the needle thread tension will be in-

creased.

2) As you turn nut 1counterclockwise (in direction

B), the needle thread tension will be decreased.

(2) Adjusting the bobbin thread tension

1) As you turn tension adjust screw 2clockwise (in

direction C), the bobbin thread tension will be in-

creased.

2) As you turn screw 2counterclockwise (in direc-

tion D), the bobbin thread tension will be de-

creased.

14. THREADING THE MACHINE HEAD

WARNING :

To avoid possible personal injury due to abrupt start of the machine, turn off the power to the

machine and check to be sure that the motor has totally stopped rotating in prior.

DDL-8100e, 8100eH

C D

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