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Brother DA-9280 Manual

Three needle (twin needle) feed off the arm double chain stitch
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DA-9280
THREE NEEDLE (TWIN NEEDLE) FEED OFF THE ARM
DOUBLE CHAIN STITCHER

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  Summary of Contents for Brother DA-9280

  • Page 1 DA-9280 THREE NEEDLE (TWIN NEEDLE) FEED OFF THE ARM DOUBLE CHAIN STITCHER...
  • Page 2 DA-9280...
  • Page 3 Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions below and the explanations given in the instruction manual. With industrial sewing machines, it is normal to carry out work while positioned directly in front of moving parts such as the needle and thread take-up lever, and consequently there is always a danger of injury that can be caused by these parts.
  • Page 4 Furthermore, do not excessively bend the cords or secure them too Contact your Brother dealer or a qualified electrician firmly with staples. for any electrical work that may need to be done. If this is not observed, fire or electric shocks may result.
  • Page 5 Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the Use only the proper replacement parts as specified electrical system.
  • Page 6 The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are difficult to read, please contact your nearest Brother dealer. Be sure to connect the ground.
  • Page 7: Table Of Contents

    8-2. Presser foot pressure adjustment ....14 8-3. Adjusting the stitch length ......15 8-4. Puller feed adjustment (Machines with puller) ........15 9. CLEANING ........9-1. Daily cleaning..........17 9-2. Changing the lubricating oil (every three months)........17 DA-9280...
  • Page 8: Names Of Major Parts

    1. NAMES OF MAJOR PARTS 1. NAMES OF MAJOR PARTS 1463B (1) Machine pulley (4) Needle bar (2) Front cover (5) Upper thread nipper (3) Presser foot (6) Lapper Safety devices (7) Thread take-up cover (8) Finger guard (9) Pulley cover DA-9280...
  • Page 9: Machine Specifications

    3. OPTIONAL PARTS 2. MACHINE SPECIFICATIONS Specifications 1464B When sewing at a speed of 4,000 rpm, the needle thread cooler (available as an option) should be used. Specifications DA-9280-5 DA-9280-7 DA-9280-C DA-9280-D Extra heavy materials Heavy materials, Extra heavy materials...
  • Page 10 The top of the table should be 40 mm in thickness and should be strong enough to hold the weight and withstand the vibration of the sewing machine. Drill holes as indicated in the illustration below. Chain hole Motor mounting holes (3 places) Cotton stand hole Ground hole 1655B DA-9280...
  • Page 11: Motor

    For details on the relationship between the motor pulleys and belts, refer to the table below. * The belt should be an M-type V-belt. Pulley O.D. Belt size 50Hz 3100 3600 4000 Sewing speed (rpm) 60Hz 3100 3600 4000 DA-9280...
  • Page 12: Installation

    Contact your Brother dealer or a qualified electrician for injury. any electrical work that may need to be done. Be sure to connect the ground.
  • Page 13 (12) to the table with the two screws (13) as shown in the illustration. 1470B 6. Connect the presser foot lifter chain (6) to the knee lifter lever (14) and the foot lifter pedal (15). 1471B DA-9280...
  • Page 14: Ground Wire Connections

    (4), and then secure it to the pulley cover base with the four screws (5). 1474B 3. Push the belt (2) downward, and then install the pulley cover B (6) to the pulley cover A (3) with the three screws (7). 1475B DA-9280...
  • Page 15: Beit Tension Adjustment

    9.8 N. 1477B 5-5. Assembling the cotton stand 1. Assemble the cotton stand while referring to the instruction manual for the cotton stand. 2. Install the cotton stand to the table with the nut (1). 1478B DA-9280...
  • Page 16: Lubrication

    Use only the lubricating oil (NIPPON OIL CORPORATION Sewing Lube 15N; VG15) specified by Brother. * If this type of lubricating oil is difficult to obtain, the recommended oil to use is Exxon Mobil Essotex SM15, VG15.
  • Page 17: Checking The Machine Pulley Rotating Direction

    For the first 3 - 4 days of use, run the machine at 500 rpm lower than the usual speed. This will help contribute to a longer service life for the machine. 1483B DA-9280...
  • Page 18: Preparation Before Sewing

    2. Loosen the three set screws (2), hold the three needles (3) with their long grooved side facing front, insert them into the needle clamp (1) all the way, and fasten the needle with the three set screws (2). 1484B DA-9280...
  • Page 19: Threading The Lower Threads

    However, the motor will keep turning even after the power is switched off as a result of the motor’s inertia. Wait until the motor stops fully before starting work. The machine may operate if the treadle is depressed by mistake, which could result in injury. 1490B 1491B DA-9280...
  • Page 20: Sewing

    3. Release the foot lifter pedal (1). 4. The machine starts running when the treadle (2) is stepped down. 1492B 5. After sewing the work, move the work to the thread trimmer (3) to make blank stitches, and cut the thread with it. 1493B DA-9280...
  • Page 21: Thread Tension

    If the machine is being used with the puller attached, depending on works, the puller pressure can be adjusted as Becomes Becomes stronger appropriate to the work by turning the presser adjust screw weaker (2). 1496B DA-9280...
  • Page 22: Adjusting The Stitch Length

    [A]. * The more you turn the machine pulley toward yourself, the smaller the feed will be. Smaller * Adjust the puller feed after seeing the finished stitches of the work (Refer to the next page). Larger 1498B DA-9280...
  • Page 23 Fabric with low elasticity 1500B 1499B Correct Feed direction Feed direction Neither non-alignment nor sewing wrinkles. Neither non-alignment nor sewing wrinkles. 1501B 1502B Insufficient Non-aligned, and wrinkled. Non-aligned, and wrinkled. 1503B 1504B Excessive Non-aligned, and very wavy. Non-aligned, and very wavy. DA-9280...
  • Page 24: Cleaning

    3. Fill the machine with oil until oil level reaches the upper reference line [A] in the oil sight glass (6). (Refer to “5-6. Lubrication”.) 4. Close the puller top cover (5) and secure it with the eight screws (4). 1507B DA-9280...
  • Page 25: Standard Adjustments

    Maintenance and inspection of the sewing machine should only be carried out by qualified personnel. Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system. Turn off the power switch and disconnect the power cord from the wall outlet at the following times.
  • Page 26: Needle And Looper Timing Adjustment

    4, or check the needle height. (Refer to “10-1. Needle bar height adjustment”.) 10. Close the belt cover plate (4), and then tighten the two screws (3). 11. Install the presser foot, needle plate and feed dogs. <Looper forward travel> <Looper backward travel> 1516B DA-9280...
  • Page 27: Timing Of Loopers Running Clear Of Needles

    “10-2. Needle and looper timing adjustment”. 1522B 6. Carry out the adjustment given in “10-4. Needle guard adjustment”. 7. Install the forward feed arm cover Push 0.1 - 0.2 mm 1523B DA-9280...
  • Page 28: Needle Guard Adjustment

    (1). 1. Remove the two screws (3) and then remove the sub-feed dog (2). 2. Place the spacer (1) under the sub-feed dog (2) and retighten the two screws (3). The spacer (1) is in the parts box. 1527B DA-9280...
  • Page 29: Tension Release Lever Adjustment

    (2) is 0.5 - 0.7 mm (for two needles) Upper thread or 0.8 - 1.0 mm (for three needles). * The thread tension will become better if the clearance between the upper thread tension bracket (1) and the lower thread tension plate (2) is reduced. 1531B DA-9280...
  • Page 30: Tension Release Shaft Adjustment

    Adjust felling distance of point [A] by loosing the screw (1). After the adjustment, retighten the screw (1). Adjust felling distance of point [B] by losing the two screws (2). After the adjustment, retighten the two screws (2). 1518B 1534B DA-9280...
  • Page 31: Puller Height Adjustment

    (1) meets the reference line [B]. 2. Loosen the two set screws (2), and turn the machine pulley toward yourself until the needle bar is lowered all the way down. 3. Retighten the two set screws (2). 1536B DA-9280...
  • Page 32: Installing Optional Parts

    (4) with the two screws (2). 2. Insert the felt (3) into the thread cooler tank assembly (1). 1537B 3. Install the thread cooler tank assembly (1) to the part [A] of the arm with the two screws (5). 1538B DA-9280...
  • Page 33 11. INSTALLING OPTIONAL PARTS 4. Fill the thread cooler tank assembly (1) with the silicone oil (6). 1539B 5. Pass the thread through the thread guide (4). 1540B DA-9280...
  • Page 34: Troubleshooting

    Adjust the feed dog height. 4. Seam position is The sub-feed dog height is incorrect. Adjust the sub-feed dog height. incorrect. The presser foot pressure is incorrect. Adjust the presser foot pressure. The feed dog height is incorrect. Adjust the feed dog height. DA-9280...
  • Page 35 It is extremely dangerous to leave any pieces of broken needle sticking in the material. If the needle breaks, search for all pieces until the whole of the needle is found again. Furthermore, we recommend that thorough steps be taken to account for such needles to comply with product liability regulations. 1543B DA-9280...
  • Page 36 INSTRUCTION MANUAL MANUAL DE INSTRUCCIONES http://www.brother.co.jp/ http://www.brother.com/ DA-9280 Printed in Japan / / Impreso en Japón SA9518-001 2008.03. B (1)