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Brother DA-9280 Instruction Manual

Three needle (twin needle) feed off the arm double chain stitcher
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DA-9280
Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
THREE NEEDLE (TWIN NEEDLE) FEED OFF THE ARM
DOUBLE CHAIN STITCHER
INSTRUCTION MANUAL

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  Summary of Contents for Brother DA-9280

  • Page 1 INSTRUCTION MANUAL DA-9280 Please read this manual before using the machine. Please keep this manual within easy reach for quick reference. THREE NEEDLE (TWIN NEEDLE) FEED OFF THE ARM DOUBLE CHAIN STITCHER...
  • Page 2: Safety Instructions

    Furthermore, do not drink the oil under shock. any circumstances, as it can cause vom- iting and diarrhoea. Keep the oil out of the reach of children. DA-9280...
  • Page 3: Maintenance And Inspection

    Wait until cations to the machine will not be cov- the motor stops fully before starting ered by the warranty. work. ¡ When carrying out inspection, adjust- ment and maintenance ¡ When replacing consumable parts such as the looper DA-9280...
  • Page 4: Warning Labels

    Be sure to connect the ground. If the ground connection is not secure, you run the risk of receiv- ing a serious electric shock. Direction of operation Safety devices q Finger guard w Thread take-up cover e Pulley cover, etc. <Rear view> DA-9280...
  • Page 5: Table Of Contents

    ........11 8-1. Adjusting the thread tension ... 11 11.INSTALLING OPTIONAL PARTS ....21 8-2. Presser foot pressure adjustment ... 11 12.TROUBLESHOOTING ......... 23 8-3. Adjusting the stitch length ....12 8-4. Puller feed adjustment (Machines with puller) ...... 12 DA-9280...
  • Page 6: Names Of Major Parts

    Thread take-up cover i Finger guard o Pulley cover 2. MACHINE SPECIFICATIONS BROTHER INDUSTRIES, LTD. DA-9280-1 Specifications *3,600 rpm for normal operation When sewing at a speed of 4,000 spm, the needle thread MADE IN JAPAN cooler (available as an option) should be used.
  • Page 7: Work Table And Motor

    ../ , , , , , ..... ../ 50Hz 3100 3600 4000 Sewing speed (rpm) 60Hz 3100 3600 4000 DA-9280...
  • Page 8: Installation

    Furthermore, check that the pulley cover base parallel to the bed. (If it is not parallel, the pulley cover may touch the machine pulley.) Parallel DA-9280...
  • Page 9: Ground Wire Connections

    (The attachment location is indicated by a ground sym- 3. Pass the ground wire through the hole in the table. 4. Connect the ground wire to the motor in accordance To motor with the instructions in the instruction manual for the motor. DA-9280...
  • Page 10: Installing The Pulley Cover

    3. Push the belt downward, and then install pulley cover B to pulley cover A with the three screws 4. If the machine is being used with the puller attached, install the puller belt cover with the two screws DA-9280...
  • Page 11: Belt Tension Adjustment

    9.8 N. 20 - 30mm 5-5. Cotton stand 1. Assemble the cotton stand while referring to the cot- ton stand instruction manual. 2. Install the cotton stand to the cotton stand mounting hole in the work table with the nut DA-9280...
  • Page 12: Lubrication

    Upper * If the oil level drops to the lower reference line, be reference sure to add more oil. line After lubrication is completed, tighten the cover screws Lower reference line DA-9280...
  • Page 13: Checking The Machine Pulley Rotating Direction

    1. Turn the pulley until needle holder is raised to the highest position. 2. Loosen needle set screws , hold needles with their long grooved side facing front, insert them into needle holder all the way, and fasten the needle with needle set screws DA-9280...
  • Page 14: Threading The Lower Threads

    Turn off the power switch before threading the upper thread, otherwise the machine may operate if the treadle is pressed by mistake, which could result in injury. Pass the upper threads as shown in the figure below. 50 - 60mm DA-9280...
  • Page 15: Sewing

    3. Release the presser lifter pedal. 4. The machine starts running when treadle is stepped down. 5. After sewing the work, move the work to thread cutter to make blank stitches, and cut the thread with it. DA-9280...
  • Page 16: Thread Tension

    Becomes Becomes weaker and keep the work from slipping. stronger * In case of Machines with puller the puller pressure can Becomes be adjusted as appropriate to the work by turning stronger Becomes presser adjusting screw weaker DA-9280...
  • Page 17: Adjusting The Stitch Length

    The more your turn the pulley toward yourself, the Smaller smaller will be the feed. * Adjust the puller feed after seeing the finished stitches of the work (Refer to page 13). Larger DA-9280...
  • Page 18 Fabric with high elasticity Fabric with low elasticity Correct Feed direction Feed direction Neither non-alignment nor sewing wrinkles. Neither non-alignment nor sewing wrinkles. Insufficient Non-aligned, and wrinkled. Non-aligned, and wrinkled. Excessive Non-aligned, and very wavy. Non-aligned, and very wavy. DA-9280...
  • Page 19: Cleaning

    3. Fill the machine with oil until the oil level reaches the top reference line on the oil gauge. (Refer to page 7.) 4. Close the puller top cover and secure it with the eight Upper reference screws line DA-9280...
  • Page 20: Standard Adjustments

    , and after checking that the needles are in the centers of the needle holes , tighten the needle bar clamp screw 6. Insert the rubber plug 7. Install the presser foot with the screw DA-9280...
  • Page 21: Needle And Looper Timing Adjustment

    9. Close the belt cover plate , and then tighten the two screws 10. Install the presser foot, needle plate and feed dogs. 2.7 - 2.9mm Looper forward travel Looper backward travel DA-9280...
  • Page 22: Timing Of Loopers Running Clear Of Needles

    6. Tighten the set screw NOTE: For some materials and threads, the best results can 1 - 2mm be obtained if the needle guard and the needle are touching slightly when the stitch length is adjusted to the actual stitch length. 0.2mm DA-9280...
  • Page 23: Feed Dog Height Adjustment

    7 - 9 mm above the center of the thread hole in the upper thread tension bracket. 3. Retighten set screw * The higher the thread release lever, the tighter will be the stitches. 7 - 9mm DA-9280...
  • Page 24: Upper Thread Take-Up Thread Guide Adjustment

    1. Insert screwdriver through the adjusting hole in the lower thread take-up base, and loosen two set screws 2. Raise lower thread take-up until it is 7 mm up from thread take-up base 3. After the adjustment, retighten two set screws curely. DA-9280...
  • Page 25: Installing The Lapper

    1. Turn the pulley toward yourself until the mark on tim- ing collar meets the reference line. 2. Loosen two set screws , and turn the pulley toward yourself until the needle bar is lowered all the way down. 3. Retighten two set screws DA-9280...
  • Page 26: Installing Optional Parts

    1. Install the thread cooler tank assembly to the thread guide with the two screws 2. Insert the felt into the thread cooler tank assembly 3. Install the thread cooler tank assembly to the arm with the two screws 18mm DA-9280...
  • Page 27 11. INSTALLING OPTIONAL PARTS 4. Fill the thread cooler tank assembly with silicone oil 5. Pass the thread through the thread guide DA-9280...
  • Page 28: Troubleshooting

    Is the feed dog worn out? – Have serviceman check it. - ¡ Presser foot floats and does not fully press work. – Have serviceman check it. - ¡ Feed dog and presser foot work on one side only. – DA-9280...
  • Page 29 If the needle breaks, search for all pieces until the whole of the needle is found again. ¡ Furthermore, we recommend that through steps be taken to ac- count for such needles to comply with product liability regula- tions. DA-9280...
  • Page 30: Instruction Manual

    INSTRUCTION MANUAL BROTHER INDUSTRIES, LTD. 15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone: 81-52-824-2177 Printed in Japan 118-928 S92928-102 2002.03. B (1)