JUKI MF-7500 Series Instruction Manual
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- Instruction manual (31 pages) ,
- Specifications (8 pages) ,
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Table of Contents
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Summary of Contents for JUKI MF-7500 Series
- Page 1 MF-7500(D)/UT37 INSTRUCTION MANUAL...
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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 ..................2 2. Installing the air regulator ....................... 2 3. Installation and setting SC-921 ....................3 (1) Installing the SC-921 on the table ( Semi-submerged type ) ..........3 (2) Connecting the cords ...................... -
Page 3: Specifications
Looper mechanism Spherical rod drive method Lubricating system Forced lubrication method by gear pump Lubricating oil JUKI GENUINE OIL 18 Oil reservoir capacity Oil gauge lower line : 600 cc to upper line : 900 cc Installation Semi-submerged type Noise... -
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 1) Install presser lifting cylinder asm. -
Page 5: Installation And Setting Sc-921
3. Installation and setting SC-921 (1) Installing the SC-921 on the table ( Semi-submerged type ) Fig. A ❻ ❻ Convex washer Spring washer Hexagonal nuts ❼ ❹ ❷ ❶ ❷ ❸ ❽ ❺ ❾ Install right and left support plates ❶ and two rubber seats ❷ of the respective support plates. Install control box mounting plate ❸... -
Page 6: Connecting The Cords
(2) Connecting the cords ❷ 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 7: Setting Procedure Of The Machine Head
(3) Setting procedure of the machine head 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. Call function setting No. 95. ❶ ❷... -
Page 8: Setting The Lower Stop Position Of The Needle Bar
(4) 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 needle bar is as shown in Fig. 1. If not, adjust the lower stop position of the nee- dle bar properly using function setting No. -
Page 9: Air Piping Drawing
IV. AIR PIPING DRAWING 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 10: Adjusting The Air Regulator
2. Piping drawing for air blow. ③ ④ ⑥ ⑤ ③ ⑤ ③ ① ② 2. Adjusting the air regulator Insert the air hose to air regulator ❶ . ❷ Use the air pressure at 0.4 to 0.5 MPa (4 to 5 kgf/ Draw up regulator knob ❷... -
Page 11: 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 12: 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. -
Page 13: Adjusting The Lower Knife
2. Adjusting the Lower knife 1) Set lower knife ❹ and lower knife holder ❺ with setscrews ❻ at the position of the illustration. 3. Adjusting the position of clamp pressure adjusting spring 1) Loosen screws ❾ . 2) Adjust so that a clearance of 2.5 ± 0.5 mm is pro- vided between the top end of clamp pressure ad- ❺... -
Page 14: Initial Position Of The Looper Thread Trimmer Mechanism
6. Initial position of the looper thread trimmer mechanism ❹ When the lower knife ❹ is located at its leftmost posi- tion, the top end of the lower knife ❹ has to be spaced 22 ± 0.5 mm from the center of needle bar. Center of needle 7. -
Page 15: Adjusting The Longitudinal Position Of The Blade Point Of Lower Knife
9. Adjusting the longitudinal Blade point of lower knife is in the center of thickness of looper. position of the blade point of lower knife Advance the needle bar by 15º from its upper dead point. Adjust so that the blade point of lower knife ❹ is ❹... -
Page 16: 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 17: Adjusting The Top Covering Thread Trimmer Mechanism
VIII. ADJUSTING THE TOP COVERING 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. -
Page 18: Adjusting The Speed Of Moving Knife
4. Adjusting the speed of moving knife Stroke of air cylinder ❶ is 20 mm. ❸ Speed of the moving knife can be changed with speed controllers ❷ and ❸ . ❷ 1) When you desire to change the protruding speed of moving knife, loosen the nut of speed controller ❷... -
Page 19: Adjusting The Air-Blow Wiper (Accessories)
IX. ADJUSTING THE AIR-BLOW WIPER (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. In addition, cut the air supply from air compressor. -
Page 20: Maintenance
X. MAINTENANCE 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.