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140401 TO ENSURE SAFE USE OF YOUR SEWING MACHINE 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.
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2. The content of this section includes items which are not contained in the specifications 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. 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 modification 1. Never use the machine for any application other than its intended one and in any manner other than that prescribed in the instruction 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. 2. 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 ma- chine which has been modified 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 oper- ation 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 edu- cate/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.
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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 instruction manual for the mass of the machine. 2. Be sure to take sufficient 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 1. Be sure to use JUKI genuine table and table stand in order to prevent accident that can result in per- sonal 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 fitted 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 1. Be sure to prevent an extra force from being applied to the cable during the use in order to prevent electrical-shock, earth-leakage or fire 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 fire accident. 3. Be sure to securely connect the connectors in order to prevent electrical-shock, earth-leakage or fire accident. In addition, be sure to remove the connector while holding its connector section.
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140401 5. Be sure to turn the power off and check to be sure that the machine and motor completely stop before re- moving the belt cover and V-belt in order to prevent accident caused by abrupt start of the machine or motor. 6. 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 fire accident by overheat. 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 inflamma- 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 carried out by a service technician who is thoroughly familiar with the machine within the scope defined in the instruction 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 mainte- nance (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.
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140401 Precautions to be taken so as to use the DSU-142, 142-7 more safely 1. Keep your hands away from needle when you turn ON the power switch or while the machine is in operation. 2. Do not put your fingers into the thread take-up cover while the machine is operating. 3. Turn OFF the power switch when tilting the machine head, or removing the belt cover or the V belts. 4. During operation, be careful not to allow your or any other person’s head, hands or clothes to come close to the handwheel, V belt and motor. Also, do not place anything close to them. 5. Do not operate your machine with the belt cover and finger guard removed. 6. When tilting the machine head, be sure to confirm that the head support bar is properly attached to your machine head, and be careful not to allow your fingers or the like to be pinched in the machine head. 1. To ensure safety, never operate the machine with the ground wire for the power supply removed.
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13. THREAD TAKE-UP SPRING ....................8 14. PRESSURES OF THE PRESSER FOOT AND WALKING FOOT ........8 15. HEIGHT OF THE FEED DOG ....................9 16. ADJUSTING THE WALKING FOOT AND THE PRESSER FOOT ........9 17. ADJUSTING THE LONGITUDINAL POSITION OF THE FEED DOG ......11 18. NEEDLE-TO-HOOK RELATIONSHIP ................11 19. AUXILIARY THREAD TENSION CONTROLLER ............12 (The following description is applied to the DSU-142-7) ..........12 20. ADJUSTING THE PRESSURE OF THE FIXED KNIFE ........... 12 (The following description is applied to the DSU-142-7) ..........12 21. ONE-TOUCH TYPE REVERSE FEED STITCHING MECHANISM ........13 (The following description is applied to the DSU-142-7) ..........13 22. ADJUSTING THE THREAD TRIMMING CAM ..............13 (The following description is applied to the DSU-142-7) ..........13 23. ADJUSTING THE CAM ROLLER ARM AND CAM ROLLER ARM PRESSER (The...
With an oiler and the oil-tank drop lubrication Motor to be used 400W Electro-stop motor (4P) AC servo motor Lubricating oil JUKI New Defrix Oil No. 1 - Equivalent continuous emission sound pressure - Equivalent continuous emission sound pressure level (L ) at the workstation:...
140401 1. SETTING UP THE SEWING MACHINE 1) When carrying the sewing machine, be sure to carry by two people. ❶ (Caution) Do not hold the pulley. 2) Do not place a protruding object, such as a screw driver, at a place where the sewing machine is to be installed. ❹...
140401 3. INSTALLING THE BELT COVER AND THE BOBBIN WINDER 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 ascertaining that the motor is at rest. – 3 –...
140401 4. LUBRICATION 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 ascertaining that the motor is at rest. – 4 –...
140401 5. ATTACHING THE NEEDLE 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 ascertaining that the motor is at rest. The standard needle is GROZ-BECKERT 135×17 Nm110. 6. WINDING A BOBBIN 7. THREADING THE BOBBIN CASE 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 ascertaining that the motor is at rest. – 5 –...
140401 8. INSTALLING THE TAKE-UP THREAD GUIDE ROD For the DSU-142 For the DSU-142-7 9. THREAD THE MACHINE HEAD 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 ascertaining that the motor is at rest. For the DSU-142 For the DSU-142-7 Thread the machine head in the order of ❶ through to . Thread the machine head in the order of ❶ through to . * When using tetron thread, the thread may slip off the needle eyelet at the start of sewing or after thread trimming.
140401 10. ADJUSTING THE STITCH LENGTH 11. FORWARD/REVERSE SEAM RATIO 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 ascertaining that the motor is at rest. 12. THREAD TENSION 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 ascertaining that the motor is at rest. – 7 –...
140401 15. HEIGHT OF THE FEED DOG 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 ascertaining that the motor is at rest. Part No. B163224500C B163224500D B163224500E Length (mm) 6.1±0.05 6.3±0.05 6.5±0.05 Number of marker lines Part No. B163224500F B163224500G Length (mm) 6.7±0.05 6.9±0.05 Number of marker lines 16. ADJUSTING THE WALKING FOOT AND THE PRESSER FOOT 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 ascertaining that the motor is at rest. – 9 –...
140401 17. ADJUSTING THE LONGITUDINAL POSITION OF THE FEED DOG 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 ascertaining that the motor is at rest. 18. NEEDLE-TO-HOOK RELATIONSHIP 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 ascertaining that the motor is at rest. (for 135×5) (for 135×17) (for DP×5) (for DP×17) (for 135×5) (for DP×5) (for 135×17) (for DP×17) Bring the needle bar to its lowest position. Adjust so that the marker line engraved on the needle bar (the second marker line as counted from the bottom for the 135 x 17 and DP x 17 needles;...
140401 19. AUXILIARY THREAD TENSION CONTROLLER (The following description is applied to the DSU-142-7) 20. ADJUSTING THE PRESSURE OF THE FIXED KNIFE (The following description is applied to the DSU-142-7) 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 ascertaining that the motor is at rest. – 12 –...
140401 21. ONE-TOUCH TYPE REVERSE FEED STITCHING MECHANISM (The following description is applied to the DSU-142-7) 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 ascertaining that the motor is at rest. 22. ADJUSTING THE THREAD TRIMMING CAM (The following description is applied to the DSU-142-7) 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 ascertaining that the motor is at rest. – 13 –...
140401 23. ADJUSTING THE CAM ROLLER ARM AND CAM ROLLER ARM PRESSER (The following description is applied to the DSU-142-7) 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 ascertaining that the motor is at rest. 24. ADJUSTING MAX MOVING STROKE OF THE ROTARY KNIFE (The following description is applied to the DSU-142-7) 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 ascertaining that the motor is at rest. – 14 –...
140401 25. ADJUSTING THE OPERATING STROKE OF THE PICKER (The following description is applied to the DSU-142-7) 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 ascertaining that the motor is at rest. 26. HOW TO REPLACE THE KNIVES (The following description is applied to the DSU-142-7) 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 ascertaining that the motor is at rest. (Refer to "20. ADJUSTING THE PRESSURE OF THE FIXED KNIFE" on page 12 for the adjustment procedure.) – 15 –...
140401 27. MOTOR PULLEY AND SEWING SPEED (This item is only applicable to the DSU-142) 1) Use a 3-phase 400 W AC clutch motor. 2) Use an M type V-belt. 3) The relation among the motor pulley, the sewing speed of sewing machine is as shown in the table below: Effective diameter of...
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140401 Trouble Causes Corrective measures ① The bobbin thread is too short. * 4. A few stitches are ○ Replace the bobbin by a standard one (alumi- skipped num). ② The bobbin thread breaks. ○ Decrease the bobbin thread tension and also decrease the thread trimming speed.
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○ Decrease the stroke of the thread take-up spring. ○ Use a needle of a lower count. ○ Move the arm thread guide (A) in the left. (Caution) The items attached with an asterisk (*) are applied only to the DSU-142-7. – 18 –...
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TOKYO, 206-8551, JAPAN PHONE : (81)42-357-2371 FAX : (81)42-357-2380 http://www.juki.com この製品の使い方について不明な点がありましたらお求めの販売店又は当社営業所にお問い合わせください。 Copyright Ⓒ 2013 JUKI CORPORATION ※この取扱説明書は仕様改良のため予告なく変更する事があります。 • 本書の内容を無断で転載、複写することを Please do not hesitate to contact our distributors or agents in your area for further information when necessary. 禁止します。 * The description covered in this instruction manual is subject to change for improvement of the •...
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