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 ENGLISH MF-7500(D)/ut35 INStructIoN MaNuaL...
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Page 2: Table Of Contents
coNtENtS !. SPEcIFIcatIoNS ......................1 @. at tHE BEGINNING ......................1 #. INStaLLING tHE accESSorIES ................2 1. Installation and setting Sc-921 ...................... 2 (1) Installing the Sc-921 on the table ( Semi-submerged type ) ..............2 (2) connecting the cords ...........................3 (3) Setting procedure of the machine head .....................4 (4) Setting the lower stop position of the needle bar ..................5 (5) Setting of the auto lifter function ........................6 (6) Setting of the pedal stroke...........................6... -
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
#. INStaLLING tHE accESSorIES 1. Installation and setting Sc-921 (1) Installing the Sc-921 on the table ( Semi-submerged type ) Fig. a convex washer Spring washer Hexagonal nut Install right and left support plates 1 and two rubber seats 2 of the respective support plates. Install control box mounting plate 3 on the control box with four screws 4 . -
Page 5: Connecting The Cords
(2) connecting the cords Loosen screw B in cover 2 with a screwdriver to open the cover. Pass cords 1 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 6: 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. The type of machine head can be selected by pressing switch 3 ( switch 4 ). -
Page 7: 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 needle bar properly using function setting No. -
Page 8: Setting Of The Auto Lifter Function
(5) 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. Turn ON the power switch with switch 3 held pressed. -
Page 9: Threading The Machine Head
$. 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 10: Adjusting The Looper Thread Trimmer Mechanism
%. 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. 1. -
Page 11: Adjusting The Lower Knife
2. adjusting the Lower knife 1) Set lower knife 4 and lower knife holder 5 with setscrews 6 at the position of the illustration. 3. adjusting the position of clamp pressure adjusting spring 1) Loosen screws 9 . 2) Adjust so that a clearance of 2.5 ± 0.5 mm is pro- vided between the top end of clamp pressure ad- justing spring !2 and the top end of lower knife 4 when the lower knife 4 is brought to the rightmost... -
Page 12: Initial Position Of The Looper Thread Trimmer Mechanism
6. Initial position of the looper thread trimmer mechanism When the lower knife 4 is located at its leftmost posi- tion, the top end of the lower knife 4 has to be spaced 22 ± 0.5 mm from the center of needle bar. center of needle 7. -
Page 13: Adjusting The Longitudinal Position Of The Blade Point Of Lower Knife
9. adjusting the longitudinal position of the blade point of lower knife Blade point of lower knife is in the center of thickness of looper. 1) Advance the needle bar by 15º from its upper dead point. 2) Adjust so that the blade point of lower knife 4 is placed at the center of thickness of the looper !3 when the lower knife 4 is projected until its top end is aligned with the end face of the looper !3 . -
Page 14: Adjusting The Thread Release Mechanism
^. 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. 1. -
Page 15: Adjusting The Top Covering Thread Trimmer Mechanism
&. 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. 1. -
Page 16: Maintenance
*. 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. 1. cleaning the motor fan Open the motor cover 1 and remove the screws 2 .