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Alfa Network A1930 Instruction Manual

High speed computer flat sewing machine
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INSTRUCTION MANUAL
High speed computer flat sewing
machine
MODEL A1930

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Summary of Contents for Alfa Network A1930

  • Page 1 INSTRUCTION MANUAL High speed computer flat sewing machine MODEL A1930...
  • Page 2 IMPORTANT SAFETY INSTRUCTIONS To get the most out of the many functions of this machine and operate it in safety, it is necessary to use this machine correctly. Please read this instruction manual carefully before use. We hope you will enjoy the use of your machine for a long time.
  • Page 3 17. Remove or modify the machine in accordance with the safely rules/standards while taking all the effective safety measures, assumes no responsibility for damage by remodeling or modification of the machine. 18. Warning hints are marked with the two shown symbols. Danger of injury to operator or service staff Items requiring special attention...
  • Page 4 FOR SAFE OPPERATION DANGER 1. To avoid electrical shock hazards, neither open the cover of the electrical box for the motor nor touch the components mounted inside the electrical box. CAUTION 1. To avoid personal injury, never operate the machine with any of the belt cover, Finger guard or safety devices removed.

  • Page 5: Table Of Contents

    INDEX SPECIFICATIONS........................1 INSTALLATION ........................1 ADJUSTING THE HEIGHT OF THE KNEE LIFTER .............. 2 INSTALLING THE THREAD STAND ................... 2 LIPIN ............................. 2 LUBRICATION ........................3 AJUSTING THE AMOUNT OF OIL (OIL SPLASHES) IN THE HOOK ........ 3 ATTACHING THE NEEDLE ....................4 SETTING THE BOBBIN INTO THE BOBBIN CASE .............

  • Page 6: Specifications

    1. SPECIFICATIONS Application Light to medium weight materials Medium to light-heavy materials Max. sewing speed 5000 rpm 4000 rpm Max. stitch length 5 mm 7 mm Needle DBX1 #9-18 (#14) DBX1 #20-23 (#14) Presser for lift 10 mm (standard) Lubricating oil White Oil 10 2.

  • Page 7: Adjusting The Height Of The Knee Lifter

    3. ADJUSTING THE HEIGHT OF THE KNEE LIFTER WARNING Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. • 1) The standard height on the presser foot lifted using the knee filler is 10 mm. 2) You can adjust the presser foot lift up to 13mm using knee lifter adjust screw (Max.

  • Page 8: Lubrication

    6. LUBRICATION WARNING Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. Information on lubrication 1) Fill oil pan with Machine Oil up to HIGH mark A. 2) When the oil level lowers below LOW mark B, refill the oil pan with the specified oil.

  • Page 9: Attaching The Needle

    • Sample showing the appropriate amount of oil Splashes of oil from the hook 1) The amount of oil shown in the samples on the left should be finely adjusted in accordance with sewing processes. Be careful not to excessively increase/decrease the amount of oil in the hook. lf the amount of oil is too small, the hook will be seized (the hook will be Appropriate amount of oil (small) hot).

  • Page 10: Setting The Bobbin Into The Bobbin Case

    9. SETTING THE BOBBIN INTO THE BOBBIN CASE Pass the thread through thread slit A, and pull the thread direction B. By so doing, the thread will pass under the tension spring and come out from notch. Check that the bobbin rotates in the direction of the arrow when thread is pulled.

  • Page 11: Adjusting The Height Of The Presser Bar

    13. ADJUSTING THE HEIGHT OF THE PRESSER BAR WARNING Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 1) Loosen setscrew and adjust the presser bar height or the angle of the presser foot.

  • Page 12: Thread Tension

    15. THREAD TENSION Adjusting the needle thread tension 1) As you turn thread tension No.1 nut clockwise (in direction A), the thread remaining on the needle after thread trimming will be shorter. 2) As you turn nut counterclockwise (in direction B), the thread length will be longer.

  • Page 13: Needle-To-Hook Relationship

    18. NEEDLE-TO-HOOK RELATIONSHIP WARNING To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior. Adjust the timing between the needle and the hook as follows: 1) Turn the hand wheel to bright the needle bar down to the lowest point of its stroke, loosen setscrew 1, (adjusting the needle bar height) (Adjusting the needle bar height)

  • Page 14: Height Of The Feed Dog

    19. HEIGHT OF THE FEED DOG WARNING Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 1) Loosen screw of crank 1. 2) Move the feed bar up or down to make adjustment. 3) Securely lighten screw 2.

  • Page 15: Adjusting The Feed Timing

    21. ADJUSTING THE FEED TIMING WARNING To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the motor has totally stopped rotating in prior. Standard feed timing Delayed feed timing Advanced feed timing 1) Loosen screws...

  • Page 16: Adjustment Of The Pedal

    22. ADJUSTMENT OF THE PEDAL WARNING Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. IInstalling the connecting rod 1) Move pedal to the right or left as illustrated by the arrow so that motor control lever connecting rod are straightened.

  • Page 17: One-Touch Type Reverse Feed Stitching Mechanism

    24. ONE-TOUCH TYPE REVERSE FEED STITCHING MECHANISM WARNING Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. How to operate 1) The moment button is pressed, the machine performs reverse feed stitching.

  • Page 18: Disassembling Of Operation Panel

    26. DISASSEMBLING OF OPERATION PANEL WARNING Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. Disassembling steps: a. b. c. A. B. 1. Use needle to open 2. Remove the operation panel, set aside. Assembling steps: Install the operation panel according to the first of disassembly after assembly.

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