Operating instructions

ManualsBrandsDuerkopp Adler ManualsBusiness equipment841-27

Contents Page:

Preface and General Safety Information

Part 1: Operating Instructions Class 841-27

1. Product Description

1.1. Proper Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2.1 Sewing Machine Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2.2 Feed Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.2.3 New DÜRKOPP-ADLER-Controls (DAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2. Technical Data

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3. Switching On/Off

3.1 Switching On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2 Switching Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4. Operating the Sewing Machine Head

4.1 Threading the Needle Thread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2 Winding the Underthread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.3 Inserting the Bobbin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.4 Changing the Needle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.5 Regulating Sewing Arch Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.6 Setting the Buttonhole Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.7 Setting the Number of Stitches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.8 Replacing and Setting the Knife . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.9 Replacing and Setting the Knife (Cutting Block) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.10 Replacing the Plastic Cutting Plate (only with Cutting Block) . . . . . . . . . . . . . . . . . . . . . 18

4.11 Needle Thread Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5. Feeding and Sewing

5.1 Reference Position - Starting the Sewing Procedure - Voiding the Feed Procedure . . . . . . . . 21

5.1.1 Reference Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.1.2 Selecting a Sewing Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.1.3 Starting the Sewing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.1.4 Voiding the Feed Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.1.5 Continuing Sewing after Thread Breakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.1.6 "No Material under Light Barrier" Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

5.2 Bobbin Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.3 Underthread Bobbin Empty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.4 Re-sewing of Buttonholes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.5 Setting of the Clearance of the Buttonholes to the Positioning Edge . . . . . . . . . . . . . . . . . 27

5.6 Programming the Arrangement of the Buttonholes . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.7 Removing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Summary of content (27 pages)

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Contents Page: Preface and General Safety Information Part 1: Operating Instructions Class 841-27 1. 1.1. 1.2 1.2.1 1.2.2 1.2.3 1.3 Product Description Proper Use . . . . . . . . . . . . . . . . . Short Description . . . . . . . . . . . . . Sewing Machine Head . . . . . . . . . . . Feed Unit . . . . . . . . . . . . . . . . . . New DÜRKOPP-ADLER-Controls (DAC) Optional Equipment . . . . . . . . . . . . 2. Technical Data 3. 3.1 3.2 Switching On/Off Switching On . . . . . . . . . . . . . . . . . . . .
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Contents 6. 6.1 6.2 4 Page: Maintenance Cleaning and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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1. Product Description 1.1 Proper Use The DÜRKOPP ADLER 841-27 is a sewing unit which can properly be used for the sewing of light to medium weight material. Such material is, as a rule, material made up of textile or synthetic fibers. These materials are used in the garment industry. Generally, only dry material may be worked with this sewing unit. The material may not be thicker than 4 mm when pressed together by the lowered presser foot.
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1.2.2 Feed Unit The feed unit is prepared for connection to an in-house vacuum unit. A vacuum distributor with filter is available as optional equipment. It allows for the attachment of up to 3 sewing units to an in-house vacuum unit. If no in-house vacuum unit exists the rotary blower, which is available as optional equipment, must be ordered. The vacuum performance is sufficient for 3 sewing units. 1.2.
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2.
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3. Switching On/Off 1 2 3 4 3.1 Switching On For the operational readiness of the sewing unit the feed rail must be run into the reference position once after switching on. The reference position is required in order for the controls to receive a defined base position for the feed rail. Caution Risk of Injury ! Do not reach into the motion area of the feed rail 3 during the reference run. – – – – – – Turn on the switch 1 of the head of the sewing machine. Turn on the main switch 2.
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4. Operating the Sewing Machine Head 4.1 Threading the Needle Thread Caution Risk of Injury ! Turn off the main switch 1 of the sewing machine head ! Thread the needle thread only with the machine head turned off. – Thread the needle thread as shown in the illustration.
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4.2 Winding the Underthread 3 1 2 – – – – – – – – 4.3 Place the yarn spool on the yarn stand. Thread the underthread as shown in the illustration. Place the bobbin on winder 1. Wind the underthread clockwise approx. 5 times around the bobbin core. Swing winder lever 2 to the bobbin and let catch. The bobbin is filled during sewing. The bobbin can also be filled outside the sewing sequence (see Chapter Bobbin Change) Winder lever 2 ends the winding procedure as soon as the bobbin is filled.
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5 Threading the bobbin – Insert a full bobbin into the bobbin case top, the bobbin must thereby turn counterclockwise when the underthread is pulled off. – Guide the underthread through slot 6 under spring 7. – Depending on the desired buttonhole, the underthread must be guided through slot 9 for a raised-form buttonhole (more thread is pulled forward over the hook back) or through slot 10 for a flat-form buttonhole (less thread). – Cut off the thusly threaded underthread at knife 11.
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4.4 Changing the Needle 1 2 Caution Risk of Injury ! Turn off the switch 1 of the sewing machine head. Change the needle only with the sewing machine head turned off. – – – 3 – – Loosen screw 1. Remove the needle from the needle bar. Push the new needle into the drilled hole of the needle bar up to the stop. Align the needle so that the furrow 3 lies on the side not facing the knife. Tighten screw 1.
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4.6 Setting the Buttonhole Length Caution Risk of Injury ! Turn off the switch of the sewing machine head. Change the buttonhole length only with the sewing machine head turned off! 2 1 1 – – – – – – – – – – – – Turn off the switch for the machine head. Pull off the hand crank 1. Lift lid 2 up to the stop. Loosen screw 3. Adjust lever 4 in the link so that the set buttonhole length results. Tighten screw 3. Unlock support 5 and close lid 2. Attach hand crank 1. Turn on the switch for the machine head.
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4.7 Setting the Number of Stitches 2 5 6 Caution Risk of Injury ! Turn off the main switch! Change the number of stitches only with the machine turned off! – – – – – – – Pull off the hand crank . Lift lid 2 up to the stop. Exchange the alternative wheels 6 pair-wise according to the table. Unlock support 5 and close lid 2. Attach hand crank. Turn on the sewing unit. Set the number of stitches to the same value in the "Buttonhole Parameters" menu with the "Number of Stitches" function.
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4.8 Replacing and Setting the Knife Caution Risk of Injury ! Turn off the main switch! The sewing arch must be in the base position otherwise the knife strikes on the sewing arch! 1 3 1 2 Removing the knife – Loosen nut 1. – Pull out knife 2. Attaching the knife – Insert a new knife (nut 1 loosened) and first push all the way up. ATTENTION ! It is essential to take care that there is a clearance of 1 mm min. between the needle thread shears and the lower edge of the knife.
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ATTENTION ! During the use of the setting program do not turn on the handwheel or the hand crank! – – If necessary, lower the sewing arch by pressing the F3 key. With the setting aid still turned on, the knife block can now be moved downward with the F4 key. – By pressing the F4 key again the knife block can be run up again. If the sewing arch is not lowered the knife block can not be run downward with the F4 key. First the sewing arch must then be lowered with the F3 key.
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4.9 Replacing and Setting the Knife (Cutting Block) Caution Risk of Injury ! Turn off the main switch! The sewing arch must be in the base position otherwise the knife strikes on the sewing arch! 3 1 2 1 4 5 4 Removing the knife – Loosen nut 1. – Pull out knife 2. Attaching the knife – Screw in completely the knife depth stop – Insert a new knife (nut 1 loosened) and first push all the way up. ATTENTION ! It is essential to take care that there is a clearance of 1 mm min.
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ATTENTION ! During the use of the setting program do not turn on the handwheel or the hand crank! – – – If necessary, lower the sewing arch by pressing the F3 key. With the setting aid still turned on the knife block can now be moved downward with the F4 key. By pressing the F4 key again the knife block can be run up again. If the sewing arch is not lowered the knife block can not be run downward with the F4 key. First the sewing arch must then be lowered with the F3 key.
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4.11 Needle Thread Tension At the factory the machine head is set so that buttonholes with flat-form tacking and raised-form buttonhole seams are sewn. 4 5 6 1 Pre-tension The pre-tension 4 is always in effect. It serves to quiet the needle thread. The setting value should be very small (5-10 g). The pre-tension 4 has little influence on the seam construct. Main tension The main tension 5 is effective when sewing the two buttonhole seams of the buttonhole.
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– Set the tacking tension 6 so that, during the sewing procedure, the greatest possible quantity of needle thread from the yarn spool is used without the needle thread above the pre-tension fluttering too much or tearing. – Thread the needle thread as per Chapter 4.1 (needle thread through the main tension). – Call up the "One-time Sewing (1X)" menu and sew a buttonhole.
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5. Feeding and Sewing 5.1 Reference Position - Starting the Sewing Procedure - Voiding the Feed Procedure 5.1.1 Reference Position For the operational readiness of the sewing unit the advancing unit must be run into the reference position once after switching on. The reference position is required in order for the controls to receive a defined base position for the advancing unit. Caution Risk of Injury ! Do not reach into the motion area of the feed and advancing units during the reference run.
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5.1.4 Voiding the Feed Procedure The feed procedure can be voided for making corrections: – Strike numeric key "3" on the control panel. or if the "Knee Switch" function is turned on, press the knee switch again. – The vacuum field is turned off. 5.1.5 Continuing Sewing after Thread Breakage 1 2 When the thread monitor registers a breakage of the needle thread, the following procedures are triggered : – The current buttonhole is completed without thread.
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2. New feed – Select the symbol at the left with the arrow keys "×" and "Ø". – Strike the enter key. The advancing device swings to the back. The indicator at the left appears. – Strike the enter key or start key. The clamping rail opens. – Remove the material. – Turn off the switch for the sewing machine head. – Rethread the needle thread. – Turn on the switch for the sewing machine head. – Select the the buttonhole at which the sewing procedure should continue with the arrow keys "Õ" and "Ö".
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5.1.6 "No Material under Light Barrier" Display 1 2 3 The light barrier 1 checks if material is present. If no material lies under the light barrier, the indicator at the left appears in the display. The indicator can appear under following conditions: – The material was displaced. – The material has run out. – The light barrier is incorrectly set. – There is no material under the light barrier. – The sewing procedure was started unintentionally. Removing the material – Strike the enter key.
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5.2 Bobbin Change The specified value (number of button holes) is shown with the numeric key "2". – The symbol at the left appears in the display. Now a new value can be specified with the numeric keypad. – In order to reset the counter for the number of underthread stitches to the specified or the set value, strike the enter key. – To exit leaving the display unchanged, strike the "ESC" key. Winding the underthread – Select the symbol at the left with the arrow keys "×" and "Ø".
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5.4 Re-sewing of Buttonholes Individual buttonholes of a buttonhole facing can be re-sewn with the "Re-sewing of Buttonholes" function. The re-sewing mode can also be turned on during the sewing procedure. – Strike key "5" in the main menu. The symbol is shown as a negative. The re-sewing of individual buttonholes is turned on. – To turn off the re-sewing of buttonholes strike key "5" in the main menu. The symbol is shown normally. The re-sewing mode is turned off.
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5.5 Setting of the Clearance of the Buttonholes to the Positioning Edge 1 2 1 The clearance of the buttonholes to the positioning edge can be set with the setting wheel 1. The indicator 2 serves as orientation to quickly see how the clearance is set. The clearance of the buttonholes to the positioning edge can lie in a range from 10 to 22 mm. 5.6 Programming the Arrangement of the Buttonholes The buttonhole arrangement can, with the 841-27, be changed via the controls.
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6. Maintenance Caution Risk of Injury ! Turn off the main switch. The maintenance of the sewing unit may only be conducted when the machine is turned off. The maintenance work must occur at the latest as per the maintenance intervals listed in the tables (see column Operating Hours). 6.1 Cleaning and Inspection 1 2 3 Maintenance work to be conducted Remarks Machine head Remove sewing dust, thread rests and cutting residue.
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6.2 Lubrication Caution Risk of Injury ! Oil can cause skin rashes. Avoid longer skin contact. After contact wash yourself thoroughly. ATTENTION ! The handling and disposal of mineral oils is subject to legal constraints. Deliver used oil to an authorized reception point ! Protect your environment.Take care not to spill any oil.