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Related Manuals for Duerkopp Adler 251-140040
Summary of Contents for Duerkopp Adler 251-140040
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Page 5: 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 6: 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 the power switch before tilting the machine head or removing the belt cover and the V belt. -
Page 7: Specifications
1. SPECIFICATIONS 251-140040 251-140040 A 251-140040 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. 5 mm Max. 4 mm Max. 5 mm Needle DBx1#20to#23(134#125to#160) DBx1#9to#18(134#65to#llO) DBx1#9to#11(134#65to#75) -
Page 8: Installing The Belt Cover
3. 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. 4. 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
5. INSTALLING THE THREAD STAND 6. 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
7. 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 "-"... -
Page 12: Hand Lifter
11. Presser foot pressure 12. HAND LIFTER 13. 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 Take-Up Spring
15. THREAD TENSION (1) Adjusting the needle thread tension 1) As you turn thread tension nut clockwise (in direction ), the needle thread tension will be increased. 2) As you turn nut counterclockwise (in direction the needle thread tension will be decreased. (2) Adjusting the bobbin thread tension 1) As you turn tension adjust screw clockwise (in... -
Page 14: 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. (1) 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
20. 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
22. MOTOR PULLEYS AND BELTS 1) A clutch motor with 400W output (1/2 HP) is used as the standard motor 2) An M-type V belt should be used. 3) The relationship between the motor pulleys, belt lengths and sewing speeds is shown in the following table: Sewing speed ( rpm ) Motor pulley part No. - Page 17 Cut the table referring to the diagram. -11-...
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