DURKOPP ADLER 911-211 Service Instructions Manual
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DURKOPP ADLER 911-211 Service Instructions Manual

DURKOPP ADLER 911-211 Service Instructions Manual

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911-211
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Summary of Contents for DURKOPP ADLER 911-211

  • Page 1 911-211 Service Instructions...
  • Page 2 IMPORTANT READ CAREFULLY BEFORE USE KEEP FOR FUTURE REFERENCE All rights reserved. Property of Dürkopp Adler AG and protected by copyright. Any reuse of these contents, i ncluding extracts, is prohibited without the prior written approval of Dürkopp Adler AG. Copyright ©...

  • Page 3: Table Of Contents

    4.6.5 Setting the presser foot height............ 36 4.6.6 Setting the reference light barrier sewing axis......38 Setting the needle thread tension ..........39 4.7.1 Setting the thread regulator ............39 4.7.2 Setting the thread tensioning spring ........... 40 Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 4 6.3.2 Draining the water condensation ..........69 6.3.3 Cleaning the filter element ............70 Cleaning work ................71 6.4.1 Cleaning the machine ..............71 6.4.2 Cleaning the motor fan mesh ............. 72 Checking the toothed belt ............72 Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 5: About These Service Instructions

    About these Service Instructions About these Service Instructions These instructions for the CNC sewing unit 911-211 were compiled with the utmost care. They contain information and notes in order to ensure long-term and reliable operation. 1.1 Scope of the Service Instructions These instructions describe the setting and maintenance work on the 911-211 CNC sewing unit.

  • Page 6: Other Documents

    • Breakage and damage during transport • Failure to follow the operating instructions • Improper use • Unauthorized modifications to the machine • Use of untrained personnel • Use of unapproved replacement parts Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 7: Safety

    Work on electrical equipment may only be carried out by qualified special- ists. Only authorized persons may work on the machine. Every person who works on the machine must first have understood these instructions. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 8: Signal Words And Symbols Used In Warnings

    NOTICE (without hazard symbol) If ignored, material damage can result The following symbols indicate the type of danger to personnel: Symbols Symbol Type of danger General Electric shock Pointed objects Crushing Environmental damage Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 9 CAUTION Type and source of danger! Consequences of non-compliance. Measures for avoiding the danger.  This is a warning note for a hazard that could result in environmental damage if ignored. Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 10 Type and source of danger! Consequences of non-compliance. Measures for avoiding the danger.  This is what a warning looks like for a hazard that could result in mate- rial damage if ignored. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 11: Working Basis

    Machine damage and malfunctions can be caused by laying the cables incorrectly. Excess cabling may obstruct moving machine parts in their ability to function correctly. This will affect the sewing function and may cause damage. Lay excess cabling as described above. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 12: Removing And Opening Covers

    Swiveling down the machine head 1. Hold the machine head in the head cover area (2). 2. Release the latch (4). 3. Swivel the machine head down. 4. Latch the locking lever (1) under the table top. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 13: Removing And Installing The Motor Cover

    1. Fit the arm cover (2). 2. Tighten the screws (1). 3. Press the hand crank and check for ease of movement; adjust the arm cover position if necessary. 4. Fit the motor cover. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 14: Removing And Installing The Head Cover

    1. Undo all 3 screws (1). 2. Take off the rear cover (2) by moving it back. Installing the rear cover 1. Fit the rear cover (2). 2. Tighten all 3 screws (1). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 15: Removing And Installing The Belt Cover

    (1) - Bobbin flap Opening the bobbin flap 1. Switch the machine on and reference it. 2. Remove the material holder. 3. Press the Safe Stop key.  The bobbin flap (1) pivots to the side. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 16: Removing And Fitting The Sliding Plate

    Fitting the sliding plate 1. Fit the sliding plate (1). 3.4 Removing and installing the burner cover (optional) Fig. 9: Removing and installing the burner cover ① ② (1) - Screws (2) - Burner cover Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 17: Flats On Shafts

    The machine has no handwheel. Fig. 11: Hand crank ① (1) - Hand crank Setting steps 1. Press and turn the hand crank (1) until the machine is in the setting position. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 18: Locking The Sewing Machine In Place

    Locking the machine in place 1. Insert the arresting pin (6) with the appropriate end in the groove (5). Removing the lock 1. Pull the arresting pin (6) out of the groove (5). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 19: Machine Head

    3. Push the arm shaft crank (1) to the right as far as it will go. 4. Tighten all the setscrews (2) on the arm shaft crank (1). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 20: Positioning The Toothed Belt Pulleys

    3. Turn the upper toothed belt pulley (3) such that the setscrews (1) are seated flush on the flat (2) of the arm shaft. 4. Tighten the setscrews (1). 5. Use the screwdriver to push the toothed belt (4) back again. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 21: Lower Toothed Belt Pulley

    3. Move the lower toothed belt pulley (3) sufficiently far to the side that the toothed belt (1) makes contact with the edge (2) without being pushed away. 4. Screw both setscrews (4) firmly in place. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 22: Aligning The Needle Bar Linkage

    (3) - Needle bar linkage Setting steps 1. Loosen both setscrews (1). 2. Adjust the needle bar linkage (3) so that the needle enters the needle hole (2) precisely in the center. 3. Tighten the setscrews (1). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 23: Position Of The Hook And Needle

     The hook tip (3) is precisely at the center (1) of the needle. Fault caused by an incorrect setting • Missing stitches Cover • Swiveling up the machine head ( 3.3.1 Access to the machine bottom section, p. 10) Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 24: Setting The Needle Bar Height

    First check the following settings: • Loop stroke position ( 4.4.1 Setting the loop stroke position, p. 21) • A straight and undamaged needle must be inserted ( Operating Instructions chapter, Inserting and replacing the needle) Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 25 5. Move the height of the needle bar (3) such that the hook tip (6) is in the middle of the lower third of the groove for the needle (5). When doing this, take care not to twist the needle. The groove (5) must face towards the hook. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 26: Setting The Hook Side Clearance

    Machine locked in place at position 1 ( p. 16).  Maximum 0.1 mm distance between the hook tip and the groove for the needle. Cover • Swiveling up the machine head ( 3.3.1 Access to the machine bottom section, p. 10) Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 27: Adjusting The Needle Guard

    Risk of crushing injuries and stab wounds from sharp and moving parts. Switch off the machine before checking and adjust- ing the needle guard. The needle guard prevents contact between needle and hook tip. Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 28 2. Turn the screw (2) such that the needle guard (1) just pushes the needle (3) far away enough so that it is not touched by the hook tip: • For pushing away more: Turn counterclockwise • For pushing away less: Turn clockwise Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 29: Setting The Needle Guide

    4. Loosen the screw (4). 5. Move the needle guide (3) as close as possible against the needle. 6. Tighten the screw (4). 7. Check this distance using a piece of paper (5). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 30: Setting The Bobbin Housing Lifter

    The correct width of the lifting gap depends on the thickness of the needle thread. Proper setting The needle thread slides through unobstructed between the nose of the bobbin housing and the middle section holder. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 31: Setting The Timing For Opening

    The bobbin housing lifter starts to open exactly at that point when the hook tip is located below the bobbin housing lifter after the loop is taken up. Cover • Swiveling up the machine head ( 3.3.1 Access to the machine bottom section, p. 10) Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 32 3. Slacken the setscrew (2) and use a hex key to turn the socket-head screw so that the hex key stands exactly vertical. 4. Tighten the setscrew (2). 5. Insert the plug (1) into the opening. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 33: Sewing Foot Lifter

    2. Remove the gear pinion (3). 3. Move the toothed rack (2) to 16.5 mm below the upper stop. 4. Insert the gear pinion (3) so that the setscrews (4) are horizontal. 5. Tighten the setscrews (4). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 34: Setting The Light Barrier

    (2) - Light barrier (4) - Lever Cover • Head cover (  3.3.4 Removing and installing the head cover, p. 12) • Motor cover ( 3.3.2 Removing and installing the motor cover, p. 11) Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 35  It will show either +103 or -103. 9. Check that the toothed rack still has about 0.5 mm clearance from the stop. 10. If necessary, adjust the light barrier using the mounting plate. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 36: Setting The Left Stop Screw

    (4) - Stop block (2) - Nut (5) - Lifting gear lever (3) - Stop screw Setting steps 1. Release the nut (2). 2. Turn the stop screw (3) appropriately. 3. Tighten the nut (4). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 37: Setting The Foot Stroke To The Needle Stroke

    • when the needle bar is at bottom dead center - the presser foot is lowered • after the loop stroke - the presser foot stroke starts. 1. Switch the machine off and on again. 2. Reference the machine. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 38: Setting The Presser Foot Height

    5. Input a sewing foot height of 1.0 mm. 6. Move to position. 7. Turn the sewing foot to bottom dead center.  The distance between the throat plate and sewing foot must be 1 mm. Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 39 5 mm (corresponding to a 4 mm sewing foot stroke). Notice The distance between min. and max. positions may have to be deter- mined. If one of these settings is changed the other setting must be checked again. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 40: Setting The Reference Light Barrier Sewing Axis

    II. 6. Loosen the setscrew (1). 7. Rotate the take-up lever disk (2) on the arm shaft accordingly.  The switch S100 then switches. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 41: Setting The Needle Thread Tension

    2. Loosen the screw (2). 3. Move the thread regulator • Slide to the left = more thread • Slide to the right = less thread 4. Tighten the screw (2). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 42: Setting The Thread Tensioning Spring

    3. Setting the spring tension: Turn the tension disk (3): • Greater spring tension: Turn counterclockwise • Less spring tension: Turn clockwise Do not twist the stop collar in doing so. 4. Tighten the screw (4). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 43: Adjusting The Thread Tension

    17. Tap on ESC and check that the tension disks (4) open easily. 18. Tap on Calibration 1 and check the closure of the tension disks. 19. Repeat the procedure for the 2nd thread tensioner. Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 44 4. If variations greater than ±10 % are found: Set the thread tensions once again and repeat the calibration. 5. If the variations persist: Clean any dirt from the thread tensioners includ- ing the magnets. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 45: Thread Cutter

    (2) are at the same height. 4. Non-required washers on the top side between the thread-pulling knife (2) and screw (6) should be kept. 5. Screw down the thread-pulling knife (2) using screw (6). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 46: Setting The Cutoff Curve

    (4) are both mutually used as a stop and should not be undone at the same time. 4. Loosen the setscrews (5). 5. Press the actuating lever (8) against the solenoid (9). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 47: Setting The Cutting Pressure

    Switch the machine off before you check and set the counter blade and the hook thread clamp. The shape of the thread-pulling knife automatically creates the required cutting pressure as soon as the thread-pulling knife and counter blade make contact. Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 48 5. Turn the counter blade (2) such that it rests against the thread-pulling knife (3). 6. Tighten the screw (1). 7. Check the position of the cutters, since the counter blade can easily become warped when the screw is being tightened. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 49: Setting Point In Time For Cutting

    6. Turn the control cam (3) such that the roller (1) runs up at the contour of the control cam (3) and the widest extent of the control cam is at the highest point when the thread lever is at the top dead center. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 50: Thread Burner (Optional)

    Fig. 42: Basic setting ② ① (1) - Threads (2) - Burner  Both threads (1) are burnt off and sucked in. The burner (2) is positioned slightly to the left opposite the needle hole. Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 51 Fig. 44: Adjusting the material thickness scanner ⑥ ⑤ (5) - Screws (6) Material thickness scanner • Loosen the screws (5) and adjust the height of the material thickness scanner (6). • Tighten the screws (5). Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 52 2. Move the needle thread advancing device (9) such that it passes over the clamp and under the sewing foot when completing its forward motion. 3. Tighten the screw (8). 4. Use the stop screw (10) to limit the swivel angle. Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 53 4. Use the screws (13) to make a height adjustment if necessary. Adjusting the chokes Fig. 48: Adjusting the chokes ⑭ ⑮ (14) - Choke - upward movement (15) - Choke - downward movement 1. Adjust the chokes (14, 15). Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 54 Fig. 49: Adjusting the thread suction device I ⑯ (16) - Angle bracket with screws Setting steps 1. Depending on the clamping system used, adjust the position using the screws on the corresponding angle bracket (16). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 55: Adjusting The Lower Burner

    10. Tighten the screws (3). 11. Adjust the chokes (4, 5). 12. Check the movement sequence and repeat the adjustment if neces- sary. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 56: Changing The Burner Tips

    3. Tighten the screws (1). 4. Tap on Tools > Service > Multitest > Thread burner. 5. Use Burner on to verify that the burner tip is glowing (turns off auto- matically after 10 s). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 57: Adjusting The Thread Advancing Device

    6. Set the distance between the roller (4) and the highest point of the control cam (6) to 0.1 mm. 7. Tighten both setscrews on the control cam (6). 8. Release the clamping screw (9) on the lever (7). Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 58 (10) and locking pin (13) is not greater than 0.1 mm when the latch is engaged. Setting steps 1. Release the nut (12). 2. Turn the setscrew (8) and adjust the distance. 3. Tighten the nut (12). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 59: Setting The Hook Thread Clamp

    2. Insert the end of the hook thread into the thread advancing device. 3. Press and turn the hand crank until the cutter swings back. 4. Check if the thread is held in place without being clamped. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 60: Setting The Control Cam For The Thread Advancing Device

    1. Press the hand crank and turn it to the position "thread lever at top dead center". 2. Loosen the setscrews (2). 3. Rotate the control cam (1). 4. Tighten the setscrews (2). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 61: Changing The Material Presser Foot Bar

    1. Undo the setscrews (2) and pull out the bearing with the gear pinion (1) forwards. 2. Dismantle the drive (3). 3. Undo all 3 screws (4) and remove the drive shaft. 4. Loosen the screw (5). Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 62 (7) out upwards. Fitting 1. Fitting is the reverse of removal. Sequence After the drive (3) has been tightened, set the presser foot height  4.6.5 Setting the presser foot height, p. 36. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 63: Sewing Machine

     The machine moves to the test position. The center of the needle is positioned within the test bore (3), and the tip of the needle can be lowered into the bore by turning the arm shaft crank. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 64: Changing The Drives

    2. Insert all four screws (1) and tighten them loosely. 3. Tension the toothed belt (2) using the screw (5) (384 Hz). 4. Tighten all four screws (1). 5. Connect the plug (4). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 65: Y Drive

    3. Insert all four screws (2) and tighten them loosely. 4. Tension the toothed belt (5) using the screw (3) (185 Hz). 5. Tighten all four screws (2). 6. Connect the plug (1). 7. Tighten the potential bonding (4). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 66: Checking The Play Between The Toothed Rack And Gear Pinion

    2. Adjust the nut (3) so that there is no play. 3. Tighten the screw (4). 4. Check the play along the entire length.  The carriage can be moved without excessive play or stiffness. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 67: Maintenance Work

    DA 10 can be obtained under the following part number at DA sales offices: • 9047 000011 - 250 ml • 9047 000012 - 1 l • 9047 000013 - 2 l • 9047 000014 - 5 l Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 68: Lubrication - Machine Head

    • Top off the oil to no higher than the minimum level marking. • Allow the machine to perform 50 cycles, then check the oil level again. • If necessary, top off the oil to the maximum level marking Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 69: Lubrication - Hook

    • Turn clockwise: less oil is released The released amount of oil does not change until the operating time has run a few minutes. Sew for several minutes before you check the setting again. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 70: Thread Suction Device

    1. Pull the pressure controller (1) up. 2. Turn the pressure controller until the pressure indicator (2) indicates 6 bar: • clockwise: to increase pressure • counterclockwise: to reduce pressure 3. Push the pressure controller (1) down. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 71: Draining The Water Condensation

    Maintenance steps 1. Place the collection tray under the drain screw (3). 2. Unscrew the drain screw (3) completely. 3. Allow water to drain into the collection tray. 4. Tighten the drain screw (3). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 72: Cleaning The Filter Element

    4. Blow out the filter element (1) using a compressed air gun. 5. Wash out the filter tray using benzine. 6. Tighten the filter element (1). 7. Tighten the water separator (2). 8. Tighten the drain screw (3). Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 73: Cleaning Work

    • Area under the throat plate (3) • Hook (2) • Area around the needle (1) Cleaning steps 1. Remove any dust and thread remains using a compressed air gun or a brush. Service Instructions 911-211 - 00.0 - 02/2015...

  • Page 74: Cleaning The Motor Fan Mesh

    A damaged toothed belt must be replaced immediately. Proper setting • The toothed belt exhibits no cracks or fragile areas. • When pressed with a finger, the toothed belt must yield no more than 10 mm. Service Instructions 911-211 - 00.0 - 02/2015...
  • Page 76 DÜRKOPP ADLER AG Potsdamer Str. 190 33719 Bielefeld, Germany Germany Phone: +49 (0) 521 925 00 Email: service@duerkopp-adler.com www.duerkopp-adler.com...

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