JUKI MF-7200D Series Instruction Manual
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JUKI MF-7200D Series Instruction Manual

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MF-7200D/UT42,45
INSTRUCTION MANUAL

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Summary of Contents for JUKI MF-7200D Series

  • Page 1 MF-7200D/UT42,45 INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    CONTENTS I. SPECIFICATIONS ......................1 II. AT THE BEGINNING ......................1 III. INSTALLING THE ACCESSORIES................2 1. Installing the presser lifting cylinder (UT45) ..................2 2. Installing the air regulator (UT45) ...................... 2 3. Installing the presser lifting solenoid (UT42) ..................3 4. Installation and setting SC-921 ......................4 (1) Table-mount type ............................4 (2) Semi-sunken type ............................4 (3) Connecting the cords ...........................5...

  • Page 3: Specifications

    Spherical rod drive method Lubricating system Forced lubrication method by gear pump Lubricating oil JUKI MACHINE OIL 18 Oil reservoir capacity Oil gauge lower line : 600 cc to upper line : 900 cc Installation Top mount type, Semi-submerged type...

  • Page 4: Installing The Accessories

    III. INSTALLING THE ACCESSORIES 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. 1. Installing the presser lifting cylinder (UT45) 1) Install presser lifting cylinder asm.

  • Page 5: Installing The Presser Lifting Solenoid (Ut42)

    3. Installing the presser lifting solenoid (UT42) 1) Screw solenoid bracket pin ❶ supplied as accesso- ❶ ❷ ries in the tap located on the left side of the solenoid installing section. 2) Adjust solenoid bracket pin ❶ to solenoid bracket pin hole ❸...

  • Page 6: Installation And Setting Sc-921

    4. Installation and setting SC-921 (1) Table-mount type * The instructions apply to the case the control box is installed on the table of the MF-7200D. To use any other machine head, install the control box on the table referring to the Instruction Manual for the main body of the relevant sewing machine.

  • Page 7: Connecting The Cords

    (3) Connecting the cords ❷ 2) Loosen screw B in cover ❷ with a screwdriver to open the cover. ❶ 1) Pass cords ❶ of the thread trimming solenoid, reverse-stitching solenoid, etc. and the cord from the motor through hole A in the table to route them down under the machine table.

  • Page 8: Setting Procedure Of The Machine Head

    (4) Setting procedure of the machine head (Caution) For the operation panel other than CP-18, refer to the Instruction Manual for the operation panel to be used for the setting procedure of the machine head. 1) Call function setting No. 95. ❸...

  • Page 9: Setting The Lower Stop Position Of The Needle Bar

    (5) Setting the lower stop position of the needle bar Call function setting No. 122. Check to be sure that the lower stop position of the nee- dle bar is as shown in Fig. 1. If not, adjust the lower stop position of the needle bar properly using function setting No.

  • Page 10: Setting Of The Auto Lifter Function

    (6) Setting of the auto lifter function WARNING : When the solenoid is used with the air drive setting, the solenoid may be burned out. So, do not mistake the setting. When the auto-lifter device (AK) is attached, this function makes the function of auto-lifter work. 1) Turn ON the power switch with Ⓐ...

  • Page 11: Air Piping Drawing (Ut45)

    IV. AIR PIPING DRAWING (UT45) 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. In addition, cut the air supply from air compressor.

  • Page 12: Adjusting The Air Regulator

    2. Piping drawing for air blow. ③ ④ ⑥ ⑤ ③ ⑤ ③ UT45 ① ② 2. Adjusting the air regulator 1) Insert the air hose to air regulator ❶ . 2) Use the air pressure at 0.4 to 0.5 MPa (4 to 5 kgf/ ❷...

  • Page 13: Threading The Machine Head

    V. THREADING 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. If threading is wrong, stitch skipping, thread breakage, needle breakage or irregular stitches will be caused.

  • Page 14: Adjusting The Looper Thread Trimmer Mechanism

    VI. ADJUSTING THE LOOPER THREAD TRIMMER MECHANISM 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. In addition, cut the air supply from air compressor.(UT45) 1.
  • Page 15 2) After adjusting the stroke, loosen screw ❺ from the lower side, and move collar ❹ to the left and right to adjust so that the stroke becomes 18 mm, same as that of the looper thread trimming solenoid. 18 mm When the magnet works, confirm that rubber seat ❼...
  • Page 16 3. Adjusting the Lower knife 1) Set lower knife ❹ and lower knife holder ❺ with setscrews ❻ at the position of the illustration. 4. Engaging the knives and adjusting the clamp spring 1) Loosen screws ❼ and ❽ , and adjust the posi- tion of upper knife  so that the engagement of the upper knife  with the lower knife is 0.5 mm when lower knife ❹...
  • Page 17 7. Initial position of the lower thread trimmer mechanism ❹ When looper thread trimmer ❹ is located at its left- Ⓐ most position, the top end of the looper thread trim- mer has to be spaced 22 ± 1 mm from the center of needle bar.
  • Page 18 10. Adjusting the longitudinal position of the blade point of lower knife ❹ Blade point of lower knife is 1) Bring the needle bar to its highest position. in the center of thickness of looper. 2) Adjust so that the blade point of lower knife ❹ is in the center of the thickness of looper  when the clearance between the right-hand edge of looper  and the blade point of lower...

  • Page 19: Adjusting The Thread Release Mechanism

    VII. ADJUSTING THE THREAD RELEASE MECHANISM 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. In addition, cut the air supply from air compressor.

  • Page 20: Adjusting The Top Covering Thread Trimmer Mechanism (Ut45)

    VIII. ADJUSTING THE TOP COVERING THREAD TRIMMER MECHANISM (UT45) 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. In addition, cut the air supply from air compressor. 1.
  • Page 21 4. Adjusting the speed of moving knife Stroke of air cylinder ❶ is 20 mm. Speed of the moving knife can be changed with speed controllers ❷ and ❸ . ❸ 1) When you desire to change the protruding speed ❷...

  • Page 22: Adjusting The Top Covering Thread Trimmer Mechanism (Ut42)

    IX. ADJUSTING THE TOP COVERING THREAD TRIMMER MECHANISM (UT42) 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. 1.

  • Page 23: Adjusting The Air-Blow Wiper (Ut45)

    X. ADJUSTING THE AIR-BLOW WIPER (UT45) 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. In addition, cut the air supply from air compressor.

This manual is also suitable for:

Mf-7200d/ut42,45

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