Table of Contents
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Table of Contents
Related Manuals for Duerkopp Adler 251-140042
Summary of Contents for Duerkopp Adler 251-140042
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Page 2: Table Of Contents
CONTENTS 1.SPECIFICATIONS...................... 2.INSTALLATION......................3.INSTALLATION OF THE SYNCHRONIZER..............4.ASSEMBLY OF HAND WHEEL..................5.INSTALLATION OF HAND WHEEL................6.INSTALLING THE BELT COVER .................. 7.ADJUSTING THE HEIGHT OF THE KNEE LIFTER............8.INSTALLING THE THREAD STAND................9.LUBRICATION......................10.ADJUSTING THE AMOUNT OF OIL(OIL SPLASHES)IN THE HOOK........ 11.ATTACHING THE NEEDLE.................. -
Page 4: Important Safety Instructions
9. Tampering with the live parts and devices, regardless of whether the machine is powered, is prohibited. 10. Repair, remodeling and adjustment works must only be done by appropriately trained technicians or specially killed personnel. Only spare parts designated by Duerkopp Adler Manufacturing (Shanghai) Co.,Ltd.can be used for repairs. -
Page 5: For Safe Operation
FOR SAFE OPERATION 1.Don't put your hand under the needle when you turn "on" the power switch or operate the machine. 2.Don't put your hand into the thread take-up cover while the machine is running. 3.Turn OFF the power switch before tilting the machine head or removing the belt cover and the V belt. -
Page 6: Specifications
1. SPECIFICATIONS 251-140042 251-140042 A 251-140042 H Application For medium-weight materials For light-weight materials For heavy-weight materials Sewing speed Max. 5,000 rpm Max. 4,000 rpm Max. 4,000 rpm Stitch length Max. 4 mm Max. 4 mm Max. 5 mm Needle DAx1#9to#11 DBx1#9to#18 DBx1#20to#23... -
Page 7: Installation Of The Synchronizer
3. INSTALLATION OF THE SYNCHRONIZER 1) Fix the synchronizer with the screws on the machine arm WARNING: You must use the copper screws to secure the synchronizer. If not so, it will cause the needle positioning abnormal and also cause the 2 magnets in the hand wheel to be demagnetized. -
Page 8: Installing The Belt Cover
6. INSTALLING THE BELT COVER 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. 7. ADJUSTING THE HEIGHT OF THE KNEE LIFTER 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. -
Page 9: Installing The Thread Stand
8. INSTALLING THE THREAD STAND 9. LUBRICATION 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. -
Page 10: Adjusting The Amount Of Oil(Oil Splashes)In The Hook
10. ADJUSTING THE AMOUNT OF OIL ( OIL SPLASHES ) IN THE HOOK WARNING: Be extremely careful about the operation of the machine since the amount of oil has to be checked by turning the hook at a high speed. When carrying out the procedure described below in 2, remove the slide plate and take extreme caution not to allow your fingers to come in contact with the hook. -
Page 11: Attaching The Needle
· Adjusting the amount of oil ( oil spots ) in the hook 1) Turning the oil amount adjustment screw attached on the hook driving shaft front bushing in the "+" direction (in direction ) will increase the amount of oil (oil spots) in the hook, or in the "-" direction (in direction ) will decrease it. -
Page 12: Presser Foot Pressure
14. Presser foot pressure 15. HAND LIFTER 16. ADJUSTING THE HEIGHT OF THE PRESSER BAR 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. 1) Loosen setscrew , and adjust the presser bar height or the angle of the presser foot. -
Page 13: Thread Tension
18. THREAD TENSION (1) Adjusting the needle thread tension 1) As you turn thread tension No.1 nut clockwise (in direction ), the thread remaining on the needle after thread trimming will be shorter. 2) As you turn nut counterclockwise (in direction the thread length will be longer. -
Page 14: Needle-To-Hook Relationship
21. 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 handwheel to bright the needle bar down to the lowest point of its stroke, and loosen setscrew... -
Page 15: Tilt Of The Feed Dog
23. TILT OF THE FEED DOG 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. 1) The standard tilt (horizontal) of the feed dog is obtained when marker dot on the feed bar... -
Page 16: Motor Pulleys And Belts
25. ADJUSTING THE NEEDLE STOP POSITION 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. (1) Stop position after thread trimming 1) The standard needle stop position is obtained by aligning red marker dot... -
Page 17: Pedal Pressure And Pedal Stroke
27. PEDAL PRESSURE AND PEDAL STROKE 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. (1) Adjusting the pressure required to depress the front part of the pedal This pressure can be changed by changing the mounting... -
Page 18: Pedal Operation
29. PEDAL OPERATION WARNING: To avoid possible personal injury due to abrupt start of the machine, reguiring special attention. The pedal is operated in the following four steps : 1) The machine runs at low sewing speed when you lightly depress the front part of the pedal 2) The machine runs at high sewing speed when you further depress the front part of the pedal (If the automatic reverse feed stitching has been... -
Page 19: Wiper
31. WIPER 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. Positioning the wiper Adjust the position of the wiper according to the thickness of the material sewn. - Page 20 Cut the table referring to the diagram. -15-...
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