DURKOPP ADLER 669 ECO - Default Chapter; Table of Contents

Table of Contents
Operating Instructions 669 - 00.0 - 08/2019 1
1 About these instructions .................................................................... 5
1.1 For whom are these instructions intended? ..........................................5
1.2 Representation conventions – symbols and characters........................ 6
1.3 Other documents................................................................................... 7
1.4 Liability ..................................................................................................8
2 Safety.................................................................................................... 9
2.1 Basic safety instructions........................................................................9
2.2 Signal words and symbols used in warnings.......................................10
3 Machine description.......................................................................... 15
3.1 Components of the machine ............................................................... 15
3.2 Proper use...........................................................................................17
3.3 Declaration of Conformity....................................................................18
4 Operation ........................................................................................... 19
4.1 Preparing the machine for operation ...................................................19
4.2 Inserting or changing the needle .........................................................20
4.3 Threading the needle thread ...............................................................22
4.4 Winding the bobbin thread ..................................................................23
4.5 Changing the bobbin ........................................................................... 24
4.6 Thread tension ....................................................................................26
4.6.1 Setting the needle thread tension........................................................27
4.6.2 Function of the main thread tension and the additional thread
tension depending on the sewing foot lift (optional) ............................29
4.6.3 Function of the additional thread tension depending on the stroke
adjustment and the Speedomat (optional) ..........................................30
4.6.4 Opening the needle thread tension .....................................................31
4.6.5 Switching on and off the supplementary thread tension (optional)......32
4.6.6 Setting the hook thread tension...........................................................33
4.7 Setting the needle thread regulator .....................................................34
4.8 Sewing feet..........................................................................................35
4.8.1 Lifting the sewing feet..........................................................................35
4.8.2 Locking the sewing feet at top dead center.........................................36
4.8.3 Setting the sewing foot pressure .........................................................37
4.8.4 Setting the sewing foot stroke .............................................................38
4.9 Setting the stitch length .......................................................................42
4.10 Buttons on the machine arm ...............................................................43
4.11 Tilting the machine head .....................................................................45
4.12 Folding down the tabletop (optional) ...................................................46
4.13 Sewing.................................................................................................48
4.13.1 Sewing with machines using the F
IR clutch positioning drive .............48
4.13.2 Sewing with machines using the Efka DC1550/DA321G
positioning drive ..................................................................................49