JUKI DDL-9000C-S Series, DDL-9000C-F Series, DDL-9000C Series, DDL-9000C-SMS, DDL-9000C-FMS Engineer's Manual

...

Download

Direct-drive, High-speed, Sewing system with Automatic Thread Trimmer

DDL-9000C Series

(DDL-9000C-F, S Series)

ENGINEER’S MANUAL

40177390

No. E424-00

PREFACE

This Engineer’s Manual is written for the technical personnel who are responsible for the service and mainte-

nance of the machine.

The Instruction Manual for these machines intended for the maintenance personnel and operators at an

apparel factory contains operating instruction in detail. And this manual describes “Standard Adjustment”,

“Adjustment Procedures”, “Results of Improper Adjustment”, and other important information which are not

covered in the Instruction Manual.

When carrying out the maintenance work on the sewing machine, be sure to refer also to the Instruction

Manual and the Parts List. Further, refer to Engineer’s Manual.

In addition, for the motor for the sewing machine with thread trimmer, refer to the separate Instruction Manual

or This manual gives the “Standard Adjustment” on the former page under which the most basic adjustment

value is described, and on the latter page “Results of Improper Adjustment” under which stitching errors and

troubles arising from mechanical failures and “How to adjust” are described.

TO ENSURE SAFE USE OF YOUR SEWING MACHINE

Adjustment : It means replacement of parts, disassembly, and repair assembly.

For the sewing machine, automatic machine and ancillary devices (hereinafter collectively referred to as "machine"), it is inevitable to conduct sewing work near moving parts of the machine. This means that there is always a possibility of unintentionally coming in contact with the moving parts. Operators who actually operate the machine and maintenance personnel who are involved in maintenance and repair of the machine

are strongly recommended to carefully read to fully understand the following engineer's manual before using/maintaining the machine. The content of the

Safety precautions Safety precautions

of this of this

engineer's manual includes items which are not contained in the specications of your product. The risk indications are classied into the following three different categories to help understand the meaning

of the labels of this engineer's manual and the product. Be sure to fully understand the following description and strictly observe the instructions.

(I) Explanation of risk levels

DANGER :

This indication is given where there is an immediate danger of death or serous injury if the person in charge or any third party mishandles the machine or does not avoid the dangerous situation when operating or maintaining the machine.

WARNING :

This indication is given where there is a potentiality for death or serious injury if the person in charge or any third party mishandles the machine or does not avoid the dangerous situation when operating or maintaining the machine.

CAUTION :

This indication is given where there is a danger of medium to minor injury if the person in charge or any third par ty mishandles the machine or does not avoid the dangerous situation when operating or maintaining the machine.

Items requiring special attention

(II)

Explanation of pictorial warning indications and warning labels

Be aware that holding the sewing machine during operation can hurt your hands.

There is a risk of entanglement in the belt resulting in injury.

There is a risk of injury if you touch the button carrier.

The correct direction is indicated.

Connection of a earth cable is indicated.

Pictorial warning indication

There is a risk of injury if contacting a moving section.

There is a risk of electrical shock if contacting a high-voltage section.

There is a risk of a burn if contacting a high-temperature section.

Be aware that eye deciency can

be caused by looking directly at the laser beam.

There is a risk of contact between your head and the sewing machine.

indication

Pictorial warning

Indication label

❶

❸

❷

❶

❷

• There is the possibility that slight to serious injury or death may be caused.

❶

• There is the possibility that injury may be caused by touching moving part.

• To perform sewing work with safety guard.

❷

Warning label

• To perform sewing work with safety cover.

• To perform sewing work with safety protection device.

• Be sure to turn the power OFF before carrying out "machine-head threading,"

❸

"needle changing," "bobbin changing" or "oiling and cleaning.

danger label

Electrical-shock

❸

SAFETY PRECAUTIONS

Accident means "to cause personal injury or death or damage to property."

DANGER

When it is necessary to open the control box containing electrical parts, be sure to turn the power off and

wait for ve minutes or more before opening the cover in order to prevent accident leading to electrical

shock.

CAUTION

Basic precaution

1. Be sure to read the engineer's manual and other explanatory documents supplied with accessories of the machine before using the machine. Carefully keep the engineer's manual and the explanatory documents at hand for quick reference.

2. The content of this section includes items which are not contained in the specications of your product.

3. Be sure to wear safety goggles to protect against accident caused by needle breakage.

4. Those who use a heart pacer have to use the machine after consultation with a medical specialist.

5. Turn OFF the power before starting the work in order to protect against accident that can result in personal injury.

If it is inevitable to carry out work with the power ON, utmost care should be taken to prevent from de-

pressing the foot pedal or pressing the start switch by mistake.

6. Make sure, after the completion of replacement work, that neither connectors nor cables are damaged, slipped off or loosened in order to protect against accident that can result in personal injury.

Safety devices and warning labels

1. Be sure to operate the machine after verifying that safety device(s) is correctly installed in place and works normally in order to prevent accident caused by lack of the device(s).

2. If any of the safety devices is removed, be sure to replace it and verify that it works normally in order to prevent accident that can result in personal injury or death.

3. Be sure to keep the warning labels adhered on the machine clearly visible in order to prevent accident that can result in personal injury or death. If any of the labels has stained or come unstuck, be sure to change it with a new one.

Application and modication

Never use the machine for any application other than its intended one and in any manner other than that prescribed in the engineer's manual in order to prevent accident that can result in personal injury or death.

JUKI assumes no responsibility for damages or personal injury or death resulting from the use of the

machine for any application other than the intended one.

Never modify and alter the machine in order to prevent accident that can result in personal injury or death.

JUKI assumes no responsibility for damages or personal injury or death resulting from the machine

which has been modied or altered.

Education and training

1. In order to prevent accident resulting from unfamiliarity with the machine, the machine has to be used only by the operator who has been trained/educated by the employer with respect to the machine operation and how to operate the machine with safety to acquire adequate knowledge and operation skill. To ensure the above, the employer has to establish an education/training plan for the operators and educate/train them beforehand.

Items for which the power to the machine has to be turned off

Turning the power off: Turning the power switch off, then removing the power plug from the outlet. This

applies to the following.

1. Be sure to immediately turn the power off if any abnormality or failure is found or in the case of power failure in order to protect against accident that can result in personal injury or death.

2. To protect against accident resulting from abrupt start of the machine, be sure to carry out the following operations after turning the power off. For the machine incorporating a clutch motor, in particular, be sure to carry out the following operations after turning the power off and verifying that the machine stops completely.

2-1. For example, threading the parts such as the needle, looper, spreader etc. which have to be thread-

ed, or changing the bobbin. 2-2. For example, changing or adjusting all component parts of the machine. 2-3. For example, when inspecting, repairing or cleaning the machine or leaving the machine.

3. Be sure to remove the power plug by holding the plug section instead of the cord section in order to pre-

vent electrical-shock, earth-leakage or re accident.

4. Be sure to turn the power off whenever the machine is left unattended between works.

5. Be sure to turn the power off in the case of power failure in order to prevent accident resulting of break-

age of electrical components.

PRECAUTIONS TO BE TAKEN IN VARIOUS OPERATION STAGES

Transportation

1. Be sure to lift and move the machine in a safe manner taking the machine weight in consideration. Refer

to the text of the engineer's manual for the mass of the machine.

2. Be sure to take sufcient safety measures to prevent falling or dropping before lifting or moving the

machine in order to protect against accident that can result in personal injury or death.

3. Once the machine has been unpacked, never re-pack it for transportation to protect the machine against

breakage resulting from unexpected accident or dropping.

Unpacking

1. Be sure to unpack the machine in the prescribed order in order to prevent accident that can result in

personal injury or death. In the case the machine is crated, in particular, be sure to carefully check nails. The nails have to be removed.

2. Be sure to check the machine for the position of its center of gravity and take it out from the package

carefully in order to prevent accident that can result in personal injury or death.

Installation

(I) Table and table stand

Be sure to use JUKI genuine table and table stand in order to prevent accident that can result in personal injury or death. If it is inevitable to use a table and table stand which are not JUKI genuine ones, select the table and table stand which are able to support the machine weight and reaction force during operation.

2. If casters are tted to the table stand, be sure to use the casters with a locking mechanism and lock

them to secure the machine during the operation, maintenance, inspection and repair in order to prevent accident that can result in personal injury or death.

(II) Cable and wiring

Be sure to prevent an extra force from being applied to the cable during the use in order to prevent electri-

cal-shock, earth-leakage or re accident. In addition, if it is necessary to cable near the operating section

such as the V-belt, be sure to provide a space of 30 mm or more between the operating section and the cable.

2. Be sure to avoid starburst connection in order to prevent electrical-shock, earth-leakage or re accident.

3. Be sure to securely connect the connectors in order to prevent electrical-shock, earth-leakage or re

accident. In addition, be sure to remove the connector while holding its connector section.

(III) Grounding

1. Be sure to have an electrical expert install an appropriate power plug in order to prevent accident caused

by earth-leakage or dielectric strength voltage fault. In addition, be sure to connect the power plug to the grounded outlet without exceptions.

2. Be sure to ground the earth cable in order to prevent accident caused by earth leakage.

(IV) Motor

1. Be sure to use the specied rated motor (JUKI genuine product) in order to prevent accident caused by

burnout.

2. If a commercially available clutch motor is used with the machine, be sure to select one with an entan-

glement preventive pulley cover in order to protect against being entangled by the V-belt.

Before operation

1. Be sure to make sure that the connectors and cables are free from damage, dropout and looseness be-

fore turning the power on in order to prevent accident resulting in personal injury or death.

2. Never put your hand into the moving sections of the machine in order to prevent accident that can result

in personal injury or death.

In addition, check to be sure that the direction of rotation of the pulley agrees with the arrow shown on

pulley.

3. If the table stand with casters is used, be sure to secure the table stand by locking the casters or with

adjusters, if provided, in order to protect against accident caused by abrupt start of the machine.

During operation

1. Be sure not to put your ngers, hair or clothing close to the moving sections such as the handwheel,

hand pulley and motor or place something near those sections while the machine is in operation in order to prevent accident caused by entanglement that can result in personal injury or death.

2. Be sure not to place your ngers near the surround area of the needle or inside the thread take-up lever

cover when turning the power on or while the machine is in operation in order to prevent accident that can result in personal injury or death.

3. The machine runs at a high speed. Never bring your hands near the moving sections such as looper,

spreader, needle bar, hook and cloth trimming knife during operation in order to protect your hands against injury. In addition, be sure to turn the power off and check to be sure that the machine completely stops before changing the thread.

4. Be careful not to allow your ngers or any other parts of your body to be caught between the machine

and table when removing the machine from or replacing it on the table in order to prevent accident that can result in personal injury or death.

Be sure to turn the power off and check to be sure that the machine and motor completely stop before removing the belt cover and V-belt in order to prevent accident caused by abrupt start of the machine or motor.

If a servomotor is used with the machine, the motor does not produce noise while the machine is at rest. Be sure not to forget to turn the power off in order to prevent accident caused by abrupt start of the motor.

7. Never use the machine with the cooling opening of the motor power box shielded in order to prevent re

accident by overheat.

iii

Lubrication

1. Be sure to use JUKI genuine oil and JUKI genuine grease to the parts to be lubricated.

2. If the oil adheres on your eye or body, be sure to immediately wash it off in order to prevent inamma-

tion or irritation.

3. If the oil is swallowed unintentionally, be sure to immediately consult a medical doctor in order to pre-

vent diarrhea or vomiting.

Maintenance

1. In prevention of accident caused by unfamiliarity with the machine, repair and adjustment has to be car-

ried out by a service technician who is thoroughly familiar with the machine within the scope dened in

the engineer's manual. Be sure to use JUKI genuine parts when replacing any of the machine parts. JUKI assumes no responsibility for any accident caused by improper repair or adjustment or the use of any part other than JUKI genuine one.

2. In prevention of accident caused by unfamiliarity with the machine or electrical-shock accident, be sure

to ask an electrical technician of your company or JUKI or distributor in your area for repair and maintenance (including wiring) of electrical components.

3. When carrying out repair or maintenance of the machine which uses air-driven parts such as an air cyl-

inder, be sure to remove the air supply pipe to expel air remaining in the machine beforehand, in order to prevent accident caused by abrupt start of the air-driven parts.

4. Be sure to check that screws and nuts are free from looseness after completion of repair, adjustment

and part replacement.

5. Be sure to periodically clean up the machine during its duration of use. Be sure to turn the power off

and verify that the machine and motor stop completely before cleaning the machine in order to prevent accident caused by abrupt start of the machine or motor.

6. Be sure to turn the power off and verify that the machine and motor stop completely before carrying out

maintenance, inspection or repair of the machine. (For the machine with a clutch motor, the motor will keep running for a while by inertia even after turning the power off. So, be careful.)

7. If the machine cannot be normally operated after repair or adjustment, immediately stop operation and

contact JUKI or the distributor in your area for repair in order to prevent accident that can result in personal injury or death.

8. If the fuse has blown, be sure to turn the power off and eliminate the cause of blowing of the fuse and

replace the blown fuse with a new one in order to prevent accident that can result in personal injury or death.

9. Be sure to periodically clean up the air vent of the fan and inspect the area around the wiring in order to

prevent re accident of the motor.

10. In order to prevent accidents resulting in personal injury or death, adjustments have to be carried out

within the instructions described in this Engineer's Manual and in the Instruction Manual by the personnel who have been well trained by the employer with respect to the latest knowledge and safety for the machine.

11. Make sure that water is contained in cylinders and pipes, then remove water from them in order to pre-

vent accidents due to a malfunction of the machine.

Operating environment

1. Be sure to use the machine under the environment which is not affected by strong noise source (electro-

magnetic waves) such as a high-frequency welder in order to prevent accident caused by malfunction of the machine.

2. Never operate the machine in any place where the voltage uctuates by more than "rated voltage ±10 %"

in order to prevent accident caused by malfunction of the machine.

3. Be sure to verify that the air-driven device such as an air cylinder operates at the specied air pressure

before using it in order to prevent accident caused by malfunction of the machine.

4. To use the machine with safety, be sure to use it under the environment which satises the following

conditions:

Ambient temperature during operation 5°C to 35°C

Relative humidity during operation 35 % to 85 %

5. Dew condensation can occur if bringing the machine suddenly from a cold environment to a warm one.

So, be sure to turn the power on after having waited for a sufcient period of time until there is no sign

of water droplet in order to prevent accident caused by breakage or malfunction of the electrical components.

6. Be sure to stop operation when lightning ashes for the sake of safety and remove the power plug in

order to prevent accident caused by breakage or malfunction of the electrical components.

7. Depending on the radio wave signal condition, the machine may generate noise in the TV or radio. If this

occurs, use the TV or radio with kept well away from the machine.

8. In order to ensure the work environment, local laws and regulations in the country where the sewing

machine is installed shall be followed. In the case the noise control is necessary, an ear protector or other protective gear should be worn according to the applicable laws and regulations.

9. Disposal of products and packages and treatment of used lubricating oil should be carried out properly

according to the relevant laws of the country in which the sewing machine is used.

PRECAUTIONS TO BE TAKEN IN VARIOUS OPERATION STAGES

MECHANICAL COMPONENTS

CAUTION

Transportation

1. Be sure to lift this machine with four or more workers and use a carriage for moving it in order to prevent personal injury.

2. Be sure to take sufcient safety measures to prevent falling or dropping before lifting or moving the

machine in order to protect against accident that can result in personal injury or death.

3. Installation is described in the Instruction Manual. Be sure to fully understand the description before putting the machine into operation.

Replacement of parts

1. In prevention of accident that can result in personal injury, be sure to carry out disassembly/assembly

work within the specied range given in this Engineer's Manual and in the Instruction Manual.

2. Turn OFF the power before starting the work in order to protect against accident that can result in personal injury.

If it is inevitable to carry out work with the power ON, utmost care should be taken to prevent from de-

pressing the foot pedal or pressing the start switch by mistake.

3. Be sure to carry out replacement work after having installed the machine in a stable state in order to protect against accident that can result in personal injury. In addition, be sure to select appropriate tools.

4. In prevention of accident that can result in personal injury, make sure, after the completion of adjustment work, that neither screws nor nuts are loosened or come in contact with other parts.

5. Be sure to use JUKI genuine parts when replacing any of the machine parts. JUKI assumes no responsibility for any accident caused by any part other than JUKI genuine one. In addition, in the event you cannot replace parts within the specied range, immediately stop the replacement work and ask JUKI or distributor in your area for replacement of the parts.

Adjustment

1. Be sure to adjust according to the instructions given in this Engineer's Manual and in the Instruction Manual in order to protect against accident that can result in personal injury.

2. Be sure to carry out replacement work after having installed the machine in a stable state in order to protect against accident that can result in personal injury. In addition, be sure to select appropriate tools.

3. In prevention of accident that can result in personal injury, make sure, after the completion of adjustment work, that neither screws nor nuts are loosened or come in contact with other parts.

4. Turn OFF the power before starting the work in order to protect against accident that can result in personal injury.

If it is inevitable to carry out work with the power ON, utmost care should be taken to prevent from de-

pressing the foot pedal or pressing the start switch by mistake.

5. In prevention of accident that can result in personal injury or entanglement accident, be sure to ensure safety at the time of test run. In addition, be sure to take care not to allow hair or cloths to come in contact with the machine belt.

Disassembly/assembly

1. In prevention of accident that can result in personal injury, be sure to carry out disassembly/assembly

work within the specied range given in this Engineer's Manual and in the Instruction Manual.

3. In prevention of accident that can result in personal injury, make sure, after the completion of adjustment work, that neither screws nor nuts are loosened or come in contact with other parts.

4. In prevention of accident that can result in personal injury, be sure to tighten screws and nuts in assembly work with a specied torque, if specied, or with an appropriate torque, if not specied. After the completion of assembly work, be sure to check that screws and nuts are not loosened before starting test run.

5. In prevention of accident that can result in personal injury, be sure to check whether the direction of rotation is correct at the time of test run.

6. In prevention of accident that can result in personal injury or entanglement accident, be sure to ensure safety at the time of test run. In addition, be sure to take care not to allow hair or cloths to come in contact with the machine belt.

PRECAUTIONS TO BE TAKEN IN VARIOUS OPERATION STAGES

ELECTRICAL COMPONENTS

CAUTION

Transportation

1. Be sure to lift this machine with four or more workers and use a carriage for moving it in order to prevent personal injury.

2. Be sure to take sufcient safety measures to prevent falling or dropping before lifting or moving the

machine in order to protect against accident that can result in personal injury or death.

3. Installation is described in the Instruction Manual. Be sure to fully understand the description before putting the machine into operation.

Replacement of parts

1. In prevention of accident caused by unfamiliarity with the machine or electrical-shock accident, be sure to ask an electrical technician of your company or JUKI or distributor in your area for replacement of electrical components.

2. When it is necessary to open the control box containing electrical parts, be sure to turn the power off and wait for ve minutes or more before opening the cover in order to prevent accident caused by unfamiliarity with the machine or electrical-shock accident. In addition, do not carry out replacement work with wet hands in order to prevent electrical-shock accident.

3. Be sure to replace parts according to the instructions given in this Engineer's Manual and in the Instruction Manual in order to protect against accident that can result in personal injury.

4. Be sure to carry out replacement work after having installed the machine in a stable state in order to protect against accident that can result in personal injury. In addition, be sure to select appropriate tools.

5. Make sure, after the completion of replacement work, that there is no loose soldering, no contact with other parts, inadequate contact between connectors and receptacles, and loose screws/nuts in order to protect against accident that can result in personal injury.

It should be remembered that some parts have been factory-insulated with tubes or tapes, or oated

above the PWB for safety's sake. In addition, internal wiring has been factory-routed or -clamped in such a way that it does not come close to high-voltage parts. Be sure to re-place those parts as they are at the time of delivery.

7. Be sure to use JUKI genuine parts when replacing any of the machine parts. JUKI assumes no responsibility for any accident caused by any part other than JUKI genuine one. In addition, in the event you cannot replace parts within the specied range, immediately stop the replacement work and ask JUKI or distributor in your area for replacement of the parts.

8. If the fuse has blown, be sure to turn the power off and eliminate the cause of blowing of the fuse and replace the blown fuse with a new one in order to prevent accident that can result in personal injury or death.

Adjustment

2. When it is necessary to open the control box containing electrical parts, be sure to turn the power off and wait for ve minutes or more before opening the cover in order to prevent accident caused by unfamiliarity with the machine or electrical-shock accident. In addition, do not carry out adjustment work with wet hands in order to prevent electrical-shock accident.

3. In prevention of accident that can result in personal injury, adjust adjustment variable resistor or the like installed on PWB within the specied range given in this Engineer's Manual and in the Instruction Manual.

5. In prevention of accident that can result in personal injury, make sure, after the completion of adjustment work, that neither screws nor nuts are loosened or come in contact with other parts.

7. In prevention of accident that can result in personal injury or entanglement accident, be sure to ensure safety at the time of test run. In addition, be sure to take care not to allow hair or cloths to come in contact with the machine belt.

Disassembly/assembly

1. In prevention of accident that can result in personal injury, be sure to carry out disassembly/assembly

work within the specied range given in this Engineer's Manual and in the Instruction Manual.

2. In prevention of accident caused by unfamiliarity with the machine or electrical-shock accident, be sure to ask an electrical technician of your company or JUKI or distributor in your area for disassembly/assembly of electrical components.

3. When it is necessary to open the control box containing electrical parts, be sure to turn the power off and wait for ve minutes or more before opening the cover in order to prevent accident caused by unfamiliarity with the machine or electrical-shock accident. In addition, do not carry out disassembly/assembly work with wet hands in order to prevent electrical-shock accident.

5. In prevention of accident that can result in personal injury, be sure to tighten screws and nuts in assembly work with a specied torque, if specied, or with an appropriate torque, if not specied. After the completion of assembly work, be sure to check that screws and nuts are not loosened before starting test run.

6. In prevention of accident that can result in personal injury, make sure, after the completion of adjustment work, that neither screws nor nuts are loosened or come in contact with other parts.

7. Make sure, after the completion of replacement work, that neither connectors nor cables are damaged, slipped off or loosened in order to protect against accident that can result in personal injury.

It should be remembered that some parts have been factory-insulated with tubes or tapes, or oated

8. In prevention of accident that can result in personal injury, be sure to check whether the direction of rotation is correct at the time of test run.

9. In prevention of accident that can result in personal injury or entanglement accident, be sure to ensure safety at the time of test run. In addition, be sure to take care not to allow hair or cloths to come in contact with the machine belt.

vii

PRECAUTIONS TO BE TAKEN SO AS TO USE THE DDL-9000C

SERIES MORE SAFELY

1. To avoid personal injury, never put your ngers under the needle when you turn ON the

power switch or operate the sewing machine.

2. To avoid personal injury, never put your ngers into the thread take-up cover while the sewing machine is in operation.

3. To avoid personal injury, turn OFF the power switch when you tilt the machine head.

4. To prevent possible personal injury caused by being caught in the machine, keep your ngers, head and clothes away from the handwheel and the thread take-up while the sewing machine is in operation. In addition, place nothing around it.

5. To avoid personal injury, never operate the sewing machine with the nger guard removed.

6. To avoid personal injury, be careful not to allow your ngers in the machine when tilting the

machine head.

7. Be sure to mount the machine head support bar on the machine table so that its height from the table surface becomes 63 to 68 mm. For the sewing machine provided with the AK device, be sure to mount the support bar on the table so that its height from the table surface becomes 33 to 38 mm.

1. For the safety, never operate the sewing machine with the ground wire for the power supply removed.

2. Be sure to turn OFF the power switch in prior when connecting/disconnecting the power plug.

3. When thunders occurs, stop the work for the safety and disconnect the power plug.

4. When the sewing machine is suddenly moved from a cold place to a warm place, there is a case where dew condensation may occur. Turn ON the power after there is no worry of the drop of water.

5. To prevent res, periodically draw out the power plug from the plug socket and clean the

root of the pins and the space between pins.

6. The hook rotates at a high speed while the machine is in operation. To prevent possible injury to hands, be sure to keep your hands away from the vicinity of the hook during operation. In addition, be sure to turn OFF the power to the machine when replacing the bobbin.

7. The motor does not produce noise while the machine is at rest. To avoid possible accidents due to abrupt start of the machine, be sure to turn OFF the power to the machine.

8. Be careful of handling this product so as not to pour water or oil, shock by dropping, and the like since this product is a precision instrument.

9. When tilting the sewing machine, secure the section marked with the down-pointing arrow (⇩) to prevent the table from shifting.

10. When tilting or raising the sewing machine, hold the upper section of sewing machine with both hands and carefully tilt/raise the sewing machine while taking care not to allow your

ngers and other parts of your body to be caught under the machine.

* When tilting/raising the sewing machine, neither push the operation panel nor put hands

on it.

⇩

viii

11. For the purpose of protecting the operation panel, do not wipe it with a cloth dampened with thinner or the like which contains volatile constituent, wet cloth or hard cloth.

12. Never lower the needle bar when the picker is brought close to the bobbin. The picker may be damaged by the needle, causing a stitching failure.

13. When the sewing machine is used for the rst time after

delivery or after an extended time of disuse, remove rubber plug from the frame cover and apply a few drops of oil to the needle bar. If the sewing machine is used with no oil added to the needle bar, the needle bar may be seized due to abrasion of the needle bar or intrusion of dust.

CAUTION BEFORE OPERATION

CAUTION :

To avoid malfunction and damage of the machine, conrm the following.

• Clean the sewing machine thoroughly before using it for the rst time.

• Remove all dust collected on the sewing machine during the transportation.

• Conrm that the voltage and phase are correct.

• Conrm that the power plug is properly connected.

• Never use the sewing machine in the state where the voltage type is different from the designated one.

• The direction of rotation of the sewing machine is counterclockwise as observed from the handwheel

side. Be careful not to rotate it in reverse direction.

• Do not tilt the machine head toward this side since oil leakage or parts breakage occurs.

• A safety switch is installed so that the sewing machine cannot be operated with the machine head

tilted.

• When operating the sewing machine, turn ON the power switch after properly setting the head on the

table.

• Before starting a test run, remove the bobbin case and the needle thread from the machine.

• Operate the handwheel after the sewing machine has totally stopped.

SAFETY DEVICES AND WARNING LABELS

Warning label against

pinching

This is the caution label to

protect ngers, etc. from

being caught between the thread take-up lever and the thread take-up lever cover.

Thread take-up lever

cover

This is a cover for preventing contact between the human body and the thread take-up lever.

Finger guard

This is a cover for preventing contact

between ngers

and the needle.

Pulley cover

This is a cover for preventing entanglement of hands, hair and clothes by the hand pulley.

Warning label

against pinching

This is the caution label to protect ngers, etc. from being caught between the bed and table during maintenance.

Warning label

The label gives the minimum precautions to be taken when operating the sewing machine.

Electrical-shock

danger label

In order to protect against electrical shock, safety precautions to be taken to avoid danger are written on this label.

(EU type)

(Refer to the warning label on page i.)

(Refer to "Electrical-shock danger label" on page i.)

This is a switch for disconnecting the power unit of the sewing machine from the power supply.

This switch is used for disconnecting the power unit of the sewing machine from the power supply. It is also used as the emergency stop switch.

Use the IEC60204-1-compliant power switch with rated current of 20 A or more and short-circuit breaking capacity of 120 A or more, which has the operating section in red against the yellow background.

Temperature warning label

This label warns that there is a risk of a burn due to contact with the high-temperature parts of the device.

Power switch

Power switch (EU type)

Selection of the power switch

CAUTION

In addition, be aware that the safety devices such as the "eye protection cover" and "nger guard" are

sometimes omitted in the sketches, illustrations and gures included in the Instruction Manual for the

explanation's sake.

In the practical use, never remove those safety devices.

CONTENTS

1. Specications ............................................................................................ 1

2. Name of each component ......................................................................... 2

3. Standard adjustment ................................................................................. 4

(1) Feed dog height and gradient .................................................................................. 4

(2) Adjusting the needle and the hook .......................................................................... 6

(3) Operating timing of the feed ..................................................................................... 8

1）DDL-9000C-F type ...........................................................................................................................8

2）DDL-9000C-S type ..........................................................................................................................9

(4) Bobbin insertion ...................................................................................................... 10

(5) Adjustment of inner hook presser position .......................................................... 12

(6) Lubrication ............................................................................................................... 14

1) Method of lubrication ....................................................................................................................14

2) Method of lubrication to the oil tank ...........................................................................................16

3) Method of oil drainage from the oil tank ......................................................................................16

4) Cleaning of the oil lter ................................................................................................................18

5) Adjusting the amount of oil in the hook ......................................................................................20

6) Hook oil adjustment procedures ..................................................................................................20

7) Essentials for hook oil adjustments ............................................................................................20

8) Replacement of the hook shaft oil wick .......................................................................................20

(7) Various origin adjustments ................................................................................... 22

1) Z-phase adjustment of a main motor ...........................................................................................22

2) Adjustment of the origin of a presser lifter motor ......................................................................26

3) Pitch motor adjustment .................................................................................................................28

4) Vertical feed motor adjustment ....................................................................................................30

5) Vertical feed link adjustment ........................................................................................................32

6) Adjustment of forward reverse stitches (correction function) ..................................................34

7) Adjustment of active tension (only the DDL-9000C-F) ...............................................................36

(8) Adjusting the needle thread presser device ......................................................... 40

1) Needle thread presser device .......................................................................................................40

2) Adjusting the remaining length of needle thread .......................................................................42

3) Length of needle thread remaining at the needle .......................................................................42

4) Response to problems occurring at the beginning of sewing ..................................................44

5) Response to problems occurring at the beginning of sewing ..................................................48

(9) Adjusting the thread trimming unit ........................................................................ 52

1) Adjustment of the thread trimming cam position .......................................................................52

2) Adjustment of the thread trimming link stopper screw ..............................................................52

3) Adjustment of the thread trimming cam position .......................................................................54

4) Adjusting the knife unit .................................................................................................................56

4) Adjusting the knife unit .................................................................................................................58

5）Adjustment of thread trimming speed ........................................................................................58

4) Adjusting the knife unit .................................................................................................................59

6) Adjustment of rise of the second thread tension disc ...............................................................60

7) Adjustment of the picker ...............................................................................................................62

8) Adjustment of the driven part stopper ........................................................................................64

9) Adjustment of the driven part stopper .........................................................................................66

10) Installed length of the thread trimmer connector bar (asm.) ...................................................66

11) Protrusion of the thread trimming shaft and stopper position ...............................................68

(10) Adjustment of thrust values of an upper shaft ................................................... 70

(11) Adjustment of external parts ................................................................................ 72

1) Adjustment of the pulley cover .....................................................................................................72

2) Clearance of the hand wheel ........................................................................................................72

3) Adjustment of the bobbin winder unit ........................................................................................74

4．Control panel .......................................................................................... 76

(1) Names and functions of the panel keys ................................................................ 76

1) DDL-9000C-S ..................................................................................................................................76

2) DDL-9000C-F ..................................................................................................................................77

(2) To use the functions of the serviceperson level ................................................. 78

1) DDL-9000C-S ..................................................................................................................................78

2) DDL-9000C-F ..................................................................................................................................79

(3) External interface .................................................................................................... 80

1)USB ..................................................................................................................................................80

(4) Communication function ........................................................................................ 81

1) How to use the communication function (DDL-9000C-S) ..........................................................81

2) How to use the communication function (DDL-9000F-F) ...........................................................82

List of communication data formats .................................................................................... 85

(5) Function of formatting the USB device ................................................................. 86

1) DDL-9000C-S ..................................................................................................................................86

2) DDL-9000C-F ..................................................................................................................................87

(6) Check program ........................................................................................................ 88

1) Function of the check program（DDL-9000C-S） ........................................................................88

2) Use a check program function.（DDL-9000C-S） ........................................................................89

3) Function of the check program（DDL-9000C-F） ........................................................................92

4) Use a check program function.（DDL-9000C-F） ........................................................................93

(7) Initialization of data ................................................................................................. 95

1）DDL-9000C-S .................................................................................................................................95

2）DDL-9000C-F .................................................................................................................................96

(8) Brightness adjustment of a panel .......................................................................... 97

(9) Hand switch setting ................................................................................................. 97

(10)Key customization .................................................................................................. 98

1) Assignable data..............................................................................................................................98

2) How to assign a function to a key ................................................................................................99

(11) Setting the key-lock and the password ............................................................. 101

5．Data list ................................................................................................. 103

(1) List of pattern functions ....................................................................................... 103

1） Setting items under the pattern sewing mode .........................................................................103

2) Setting items for the polygonal-shape stitching steps ............................................................104

(2) List of memory switch data .................................................................................. 105

1) Level 1 ...........................................................................................................................................105

2） Level 2 .......................................................................................................................................... 111

(3) Details of a memory switch .................................................................................. 114

(4) List of errors .......................................................................................................... 118

6． Electrical component and the like ..................................................... 122

(1) Construction of a control box and how to remove a board .............................. 122

1） Construction of a control box ....................................................................................................122

2) How to remove the CTL board assembly ..................................................................................122

3) How to remove the PWR board assembly .................................................................................122

(2) Various boards....................................................................................................... 123

1） FLT-T board assembly ................................................................................................................123

2） FLT-S board assembly ................................................................................................................123

xii

3) PWR board assembly /PWR -CE board assembly ....................................................................124

4) CTL board assembly /CTL -D board assembly .........................................................................125

5) INT board assembly ....................................................................................................................126

(3) Optional input-output connector ......................................................................... 127

1) How to set an optional input-output function（DDL-9000C-S

2) How to set an optional input-output function（DDL-9000C-F

3) Position where an optional input-output connector is placed ................................................131

） ............................................... 127

） ............................................... 130

7. Maintenance ........................................................................................... 136

(1) Oil quantity check.................................................................................................. 136

(2) Cleaning ................................................................................................................. 136

(3) Application of appropriate grease .......................................................................138

1) Needle bar lower bushing and presser bar bushing ................................................................138

2) Feed bar mechanism ...................................................................................................................138

3) Face plate mechanism .................................................................................................................140

4) Inside a gear box ..........................................................................................................................142

(4) Application of appropriate grease .......................................................................144

(5) Thread take-up lever mechanism......................................................................... 146

(6) Replacement of the motor .................................................................................... 148

(7) Replacement of the timing belt ............................................................................ 148

(8) Replacing the fuse ................................................................................................. 150

(9) Changing the voltage 100V/200V ......................................................................... 150

(10) How to remove a panel ....................................................................................... 152

8. Screws for attachment and positions of external parts .................... 154

9. Dry hook ................................................................................................. 155

10. Connection diagram of the head and electrical component ........... 156

(1) Digital type ............................................................................................................. 156

(2) Full digital type ...................................................................................................... 157

11. Troubles and corrective measures ..................................................... 158

(1) Mechanical components ....................................................................................... 158

(2) Sewing performance ............................................................................................. 163

12．Drawing of table ................................................................................. 180

xiii

1. Specications

Model DDL-9000C-SMS DDL-9000C-SSH DDL-9000C-FMS DDL-9000C-FSH

Semi-dry for stan-

Item

dard materials (Digital type)

No. 1 Max. sewing speed 5000sti/min 2 Max. stitch length Difference of stitch length 5 mm 3 Needle bar stroke 30.7mm 35mm 30.7mm 35mm 4 Take-up lever stroke 110mm 113mm 110mm 113mm 5

Thread trimming method

Lower bobbin winder unit

Needle thread nipper unit（NB type

）

8 Horizontal feed control Electronic control 9 Vertical feed control Electronic control 10

Feed locus

Needle thread tension 12 Presser foot pressure 13 Number of patterns Sewing pattern : 99 patterns

(For the polygonal shape sewing, as many as 10 patterns can be registered.)

NFC

Data com-

munication

USB LAN

Lubrication

system

Plate (needle bar) Grease lubrication Oil wick lubrication Grease lubrication Oil wick lubrication Hook Plunger pump type

Gearbox

Oil supply

Plate (needle bar) Grease lubrication +

Special surface

processing

Hook With oil tank (capacity: 150 ml)

Oil to be

used

Plate (needle bar)

JUKI Grease A

(Part No.: 40006323) Hook Gearbox

18 Lifting amount of

presser

19 Needle

Auto：1st step 5.0mm

DB×1(#11)#9～18

1738 (Nm75) Nm65

DP×5(#11)#9～18

134（Nm75） Nm65

From needle to

Dimensions

machine arm (width) From needle to

machine arm (high) Bed size 178mm×517mm

Machine head drive Compact AC servomotor：400W

22 Machine head weight 40.5kg 23 Power consumption 520VA 24 Working temperature

Temperature: 5 °C to 35°C, humidity: 35% to 85% (No dew condensation permissible)

and humidity

25 Supply voltage and

frequency

Noise

SMS ;- Equivalent continuous emission sound pressure level (LpA) at the workstation: A-weighted value of 81.5 dBA ; (Includes KpA = 2.5 dBA) ; according to ISO 10821- C.6.2

-ISO 11204 GR2 at 5,000 sti/min. SSH ;- Equivalent continuous emission sound pressure level (LpA) at the workstation: A-weighted value of 77.5 dBA ; (Includes KpA = 2.5 dBA) ; according to ISO 10821- C.6.2

-ISO 11204 GR2 at 4,500 sti/min.

*1：Stitch length *2：Stitch length

0.00～4.00：5,000sti/min,

0.00～4.00：4,500sti/min, *3：JUKI New Defrix Oil No. 1 or JUKI Machine Oil 7 (equivalent to ISO VG7) *4：It's adjusted by a panel

Minute-quantity lubrication for heavy-weight materials (Digital type)

4500sti/min

Semi-dry

for standard materials (Full digital type)

5000sti/min

Minute-quantity lubrication for heavy-weight materials (Full digital type)

4500sti/min

Double-edged rotary type

Built-in the machine head (with bobbin thread holding plate)

Electromagnetic

4 kinds Spring type Active tension Spring type

Electronic control

Cycle sewing pattern : 9 patterns Custom-pitch pattern 20 patterns

Condensation custom pattern 9 patterns

With With

Without With

Grease lubrication+Special surface processing

Oil wick lubrication Grease lubrication +

Oil wick lubrication

Special surface pro-

cessing

JUKI Grease A

No.1

(Part No.: 40006323)

No.1 or 7

JUKI Grease A (product No.: 40006323)

By hand：5.5mm、By knee：15mm

（*4：

DB×1(#21)#20～23

110

1738 （Nm130）Nm125

DP×5(#21)#20～23

134（Nm130） Nm125

110

0.1～8.5mm）2nd step 8.5mm DB×1(#11)#9～18

160

1738（Nm75）Nm65

DP×5(#11)#9～18

134（Nm75）Nm65

160

8.5～13.5mm

（*4：

DB×1(#21)#20～23

110

1738 （Nm130）Nm125

DP×5(#21)#20～23

134（Nm130）Nm125

110

303mm

137mm

that is directly connected to the main shaft（direct-drive system

Rated voltage ±10%, 50/60Hz

stitch length stitch length

4.05～5.00：4,000sti/min

– 1 –

No.1

）

or 7 *3

）

160

2. Name of each component

❹

󱢹

󱢼

󱢳

󱢺

❽

󱢸

󱢻

󱢽

❷

❾

❼

󱢶

󱢷

󱢴

❸

󱢼

󱢵

❶

❺

Power switch

❶

Operation Panel

❷

Pulley cover

❸

Thread stand

❹

Control box (SC-950, SC-951)

❺

Operation pedal

❻

One-touch type reverse feed button

❼

Needle thread presser device

❽

Bobbin winder unit

❾

LED hand light

󱢳

Oil ller port

󱢴

❻

Reverse feed lever

󱢵

Minute adjustable presser lifting screw

󱢶

(only for DDL-9000C-S)

Hand wheel

󱢷

Take-up lever cover

󱢸

Finger guard

󱢹

Under cover

󱢺

1st thread tension

󱢻

2nd thread tension

󱢼

Knee lifter

󱢽

Power switch (For CE)

󱢾

󱢽

– 2 –

Power switch

❶

This switch turns on and off the power to the head unit motor, electric components, and operation panel.

Operation panel

❷

It allows you to adjust the automatic reverse feed stitching speed and a head sewing speed and set a

feed pitch and so on.

Pulley cover

❸

This cover protects the machine head motor.

Thread stand

❹

Control box Control box (Fll digital type SC-950, Digital type SC-951)

❺

The box contains the circuit that controls the head unit and motor, the output circuit that operates each

output (the thread trimming solenoid, back solenoid, wiper solenoid, etc.), the pedal sensor that detects

the pedal operation, and the power circuit that performs each function.

Operation pedal

❻

This pedal allows users to conduct machine speed control, thread trimming, presser lifting motion (only

for AK-154), and more by depressing the front or back part of the pedal.

One-touch type reverse feed button

❼

This button allows users to conduct reverse stitching.

Needle thread presser device

❽

This device is able to tuck the needle thread on the wrong side of material under control of the signal

from the control box.

Bobbin winder unit

❾

This unit is integrated into the head unit.

LED hand light

󱢳

This is the LED hand light installed on the bottom of the arm jaw. The light illuminates the area sur-

rounding the needle entry. Its brightness can be adjusted with the hand switch. It should be adjusted to

match the sewing item and/or to your preference.

Oil ller port

󱢴

This port is used for lubrication to the hook.

Feed lever

󱢵

This lever allows users to conduct reverse stitching.

Minute adjustable presser lifting screw (only for DDL-9000C-S)

󱢶

Hand wheel

󱢷

Take-up lever cover

󱢸

This cover prevents users from touching the take-up lever.

Finger guard

󱢹

This guard prevents users (mainly thumb and ngers) from touching the needle.

Under cover

󱢺

1st thread tension

󱢻

2nd thread tension

󱢼

Knee lifter

󱢽

Power switch (for CE)

󱢾

– 3 –

3. Standard adjustment

(1) Feed dog height and gradient

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.

Standard adjustment

②

❶ ❷

①

❹

❸

Medel DDL-9000C-FMS/SMS DDL-9000C-FSH/SSH

Seam speci-

cation

Depends on the destination

Needle plate B119012I0B

Opereter side (b)

Counter op-

erator side (a)

Timing marker dot position on the horizontal feed bar shaft

Engraved marker dot position on the horizontal feed bar shaft

For general export

Four φ1.6

Medium-weight materials　S type Heavy-weight materials　H type

AA GG BB EE AA GG BB EE

For Chine For Europe For Japan For general

export

B1109552000

Four φ1.9

（

B119012I0B

Four φ1.6

1.0±0.05 1.3±0.05

1.0±0.1

）（

① ②

11028008

Four φ1.9

40089605

Four

Standard feed dog height （panel setting value : 0

For Chine For

φ2.6

11062007

Threeφ2.6

1.3±0.1

DDL-9000C-FMS/SMS : 1mm

DDL-9000C-FSH/SSH：1.3mm

Europe

）

For Japan

40089605

Four

φ2.6

）

– 4 –

Adjustment Procedure

Results of Improper Adjustment

1. Set the panel setting value at 0.

2. After adjustments, rmly tighten the screws that have been loos-

ened.

(Screw tightening should be done under the condition that the

setscrews ❷ is pushed against the horizontal feed bracket shaft ❶.)

(Cautions)1. In regard to the locus of standard feeding, the

throat plate and the feed dog rise almost horizon-

tally when the throat plate rises.

2. The direction of the horizontal feed bracket shaft

❶ should be adjusted on the right side (operator

side).

3. If there is rattle in the horizontal feed bracket shaft

❶, this can be a cause of unusual sound and im-

proper linearity.

4. When you have changed the stitch pitch, the feed

dog height, and the feed timing, run the sewing

machine at low speed to make sure that nothing

interferes with each other before the actual sew-

ing (a gap with 0.5 mm or more).

5. There may be the cases where the feed amount of

the operation panel and the actual sewing pitch

are different from each other in case of the use in

the state other than the standard delivery or mate-

rial used. Compensate the pitch in accordance

with the sewing product.

◦ If the gradient of the feed dog is

adjusted for either shaft only, the

feed dog height may be changed.

Adjustments are needed for both

shafts in all cases.

◦ According to the shaft adjusting

position, the position of feed dog

motion may be shifted.

In such a case, loosen the tight-

ening screw ❸ of the horizontal feed arm ❹ to adjust the position

of motion.

◦ According to the result of feed

dog height or gradient adjust-

ments, there is possibility of inter-

ference with the thread trimmer

unit.

◦ When the feed dog height is

set above the standard level,

the feeding power is improved.

Instead, there can be problems

of presser jumping at high speed

and aws in light materials.

– 5 –

(2) Adjusting the needle and the hook

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.

Standard adjustment

❶

0.04 to 0.1mm

❹

❺

❷

❻

❸

Lubricated hook K Part No. : 23621303

– 6 –

Adjustment Procedure

1. Turn the ywheel until the needle bar ❷ comes to its lowest position, and loosen the needle bar connecting setscrew ❶.

2. Determine the needle bar height.

Adjust the engraved marker line (marker line A for the DB

needle and marker line B for the DA needle) of the needle bar ❷ to the lower end of the needle bar lower metal ❸ and tighten the needle bar connecting setscrew ❶. (Be careful not to tighten the needle bar connecting setscrew ❶ too much.)

3. Determine the mounting position of the hook ❺.

Turn the three hook setscrews in the direction of ywheel

forward revolutions to raise the needle bar ❷. In this direction, adjust the engraved marker line (marker line C for the DB needle and marker line D for the DA needle) to the lower end of the needle bar lower metal ❸.

4. In this state, adjust the blade point ❺ of the inner hook to the center of the needle ❹ so that a clearance of 0.04 to 0.1mm (goal value) is secured between the needle ❹ and the hook ❺.

Since then, rmly tighten the three hook setscrews.

(Cautions) The needle bar ❸ of the DDL-9000C-FMS becomes

black because a special coating is applied to the needle bar ❸. When it is difcult for you to check a marker line, make the room brighter using a light and check it.

<Information about the dry hook> Use the following part number.

The hook part numbers come in two types according to the specications.

22890206 (without the needle guard) 22890404 (with the needle guard) 22890305 (22890206 with special surface treatment)

(Cautions) The dry hook (RP hook) tends to collect thread

chips and material dust. This can cause malfunction or defective stitches. Periodic cleaning is required.

<Lubricated hook K: Available separately> This is a hard blade point hook with a needle holder applicable

to needle size #9 (#65).

Where a thin needle has to be used for reasons of sewing pro-

cesses, this type of hook is applicable to the prevention of stitch skipping and needle breakage.

About the needle bar

Amount

Specications Part No.

DDL-9000C-SMS,FMS 22886904 1.8mm φ 1.64

DDL-9000C-SMS,FMS 22887004 1.8mm φ 2.02

DDL-9000C-SMS,FMS 40086602 1.8mm φ 1.64

DDL-9000C-SMS,FMS 40086604 1.8mm φ 2.02

DDL-9000C-SSH,FSH 40061767 2.3mm φ 2.04

of looper return

Needle shank

Results of Improper Adjustment

◦ If this clearance is too small, the

blade point of the hook ❺ may be

damaged.

Too much clearance may give rise

to stitch skipping.

◦ When you use a dry hook, buy

and mount the parts that stop the

hook oil quantity.

Refer to "3.-(6)-5) Adjusting the

amount of oil in the hook".

– 7 –

(3) Operating timing of the feed

(Caution) When you have changed the stitch length, feed dog height or feed timing, run the sew-

ing machine at a low speed to make sure that the gauge does not interfere with the

changed part.

1）DDL-9000C-F type

Timing between the needle and feed can be

adjusted on the operation panel.

[How to adjust]

1. Display the sewing data edit screen by

pressing ❶.

❶

2. Display "S049 Feed timing" by pressing

❷.

❷

Needle

Standard : 0

❺

3. Change the feed timing by pressing ten

keys and +/- keys ❸.

(+ : To advance; - : To retard)

4. Conrm your entry by pressing ❹.

5. Display the sewing screen by pressing

❺.

❹❸

To advance :

Adjust with the + key

To retard:

Adjust with the - key

(Caution) 1. The feed timing differs with the set value. (Image gure as observed from the face plate

side)

2. The stitch length changes by adjusting the feed timing. Carry out adjustment while actually

carrying out sewing for the purpose of checking the stitch length.

– 8 –

2）DDL-9000C-S type

❺

Timing between the needle and feed can be

adjusted on the operation panel.

[How to adjust]

1) Display the sewing data edit screen by

pressing ❺.

❻

❷❶

2) Display "S049" by pressing

❶.

3) Change the feed timing by pressing

❷.

(+ : To advance; - : To retard)

4) Conrm your entry by pressing ❻.

Then, the sewing screen is displayed.

○ When the timing is fast,

1. Since the motion in horizontal direction is reduced at the beginning of feeding, the material cloth is fed

assuredly by the effect of creep reduction.

2. The feeding force is reduced around the end of feeding because the feed dog lowers faster.

○ When the timing is slow,

1. The motion becomes moderate at the beginning of feeding, thus making the material cloth biting

worse.

2. The light-weight materials tend to be less damaged.

3. The material cloth is fed assuredly at the end of feeding. Thanks to the leading effect, puckering tends

to be improved.

– 9 –

(4) Bobbin insertion

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.

Standard adjustment

1) Bobbin case with idling prevention spring

(Drawing is for 40000264.)

（1）

o For the bobbin case with idling prevention spring

❷

Change the

height.

Ear

0.3±0.2mm

（2）

Bobbin revolution

❶

（3）

（4）

– 10 –

Adjustment Procedure

Results of Improper Adjustment

1. Hold the bobbin so that it turns to the right and insert it in the

bobbin case. (See Drawing.)

2. Pass the thread through the threading port A of the bobbin

case. When the thread is pulled in the direction of B, it can be pulled toward the threading port C passing beneath the thread

tension spring.

3. Examine if the bobbin turns in the direction of the arrow when

the bobbin thread is pulled.

About the standard part numbers（DDL-9000C-□□）

Part name S type H type Bobbin case D1837555BAAA 40000264 Bobbin case with idling prevention spring Bobbin 40091141

1) Bobbin case with idling prevention spring

The DDL-9000C Series employs the bobbin case with an idling prevention spring.

Adjustments of idling prevention spring tension can be carried out in the procedures below.

If bobbin idling occurs, increase the idling prevention spring tension

When the bobbin runs idle

D1837555BOBA 11038700

B9117012000

(Made of aluminum)

(Made of iron)

→

Increase the tension of the idle-prevention spring.

◦ If the direction of clockwise

winding is adopted, variation is

lessened possibly caused by a

change in the amount of bobbin

thread.

When the thread is not well tightened

* Adjustment of idling prevention spring tension

(1) Insert an old needle as illustrated and remove the spring by lifting it up.

(Suggestion: Use the thumb to prevent the spring from popping out.)

(2) The spring tension can be changed by changing the height of the arch-shaped section of the spring.

(Make sure not to permit the free end of the spring to come out of the bobbin case.) (3) Firstly, set the ear ❶ and insert the needle. Then, settle the ear ❷ is the state that the center part of

the spring is lifted.

(4) When a bobbin case with an idling prevention spring is used, it should be inserted in the winding

direction as illustrated.

(Unevenness in sewing at high or low speed)

When sewing seems to be too tight at low speed:

When sewing seems to be too

weak at low speed:

→

Decrease the tension of the idle-prevention spring.

Adjust the bobbin thread tension and the idling

→

prevention spring tension to be strengthened.

Adjust the bobbin thread tension and the idling

→

prevention spring tension to be weakened.

* If there is a problem of bobbin idling or uneven sewing at high or low speed, use of a bobbin case with

an idling prevention spring is effective.

– 11 –

(5) Adjustment of inner hook presser position

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.

Standard adjustment

❷

❶

Inner hook

❶

* As seen from above, after

removing the throat plate

About the standard part numbers

Part name S type (Semi-dry) H type (Micro-quantity lubrication)

Inner hook presser 40174351 40174353

Needle entry

– 12 –

Adjustment Procedure

Results of Improper Adjustment

1. The front and rear positions of the inner hook presser ❶ can be

adjusted by means of the setscrew ❷.

[Standard adjusting value] Fasten the needle entry section by means of the setscrew ❷ so

that it is located closer to the shoulder section toward the front side from the center of the embossed part in the inner hook presser ❶.

◦ If the embossed part of the inner

hook presser ❶ has any aw, this

can be a cause of thread break-

age or uneven sewing.

In such a case, the damaged part

shall be replaced with a new one.

◦ If the inner hook presser ❶ is

positioned inadequately, an

extra tension is exerted when the

thread comes out of the em-

bossed part. This can be a cause

of shrinkage errors.

– 13 –

(6) Lubrication

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.

1) Method of lubrication

Standard adjustment

H type (Micro-quantity lubrication)

❶

❻

❹

Float

❷

❸

❼

❺

S type (Semi-dry)

❻

❹

Float

❷

❸

❺

– 14 –

+ 168 hidden pages

JUKI DDL-9000C-S Series, DDL-9000C-F Series, DDL-9000C Series, DDL-9000C-SMS, DDL-9000C-FMS Engineer's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual