Pfaff 3811-2/45 Instruction Manual
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Pfaff 3811-2/45 Instruction Manual

Pfaff 3811-2/45 Instruction Manual

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Enlarged version
3811
- 2/45
- 11/43
- 11/45
-13/45

Instruction manual

For machines with a thread trimmer use
the Maintenance Manual -900/71 for the
PFAFF 5480.
Use the motor manufacturer's technical
literature for the motor.
296-12-17 514
Betriebsanleitung engl. 06.97

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Summary of Contents for Pfaff 3811-2/45

  • Page 1: Instruction Manual

    3811 - 2/45 - 11/43 - 11/45 -13/45 Instruction manual For machines with a thread trimmer use the Maintenance Manual -900/71 for the PFAFF 5480. Use the motor manufacturer's technical literature for the motor. 296-12-17 514 Betriebsanleitung engl. 06.97...

  • Page 2: Compressed Air

    l The machine must only be commissioned in full knowledge of the instruction manual and operated by persons with appropriate training. l Before putting into service also read the safety rules and instructions of the motor supplier. l The machine must be used only for the purpose intended. Use of the machine without the safety devices is not permitted.
  • Page 3 Notes on safety ........................ 2 What the symbols mean ....................2 Fields of application ......................5 Technical data ........................5 Operation elements and optical displays ................6 Initial check ........................8 Installing the machine ...................... 8 Connecting compressed air and electricity ..............8 Compressed air ........................

  • Page 4: Table Of Contents

    Presser foot settings ...................... 38 Clearance between presser foot and needle plate ............38 Presser foot stroke with the automatic presser foot lifter ..........38 Aligning the presser foot ....................40 Hook settings ......................... 42 Hook - lateral motion ...................... 42 Adjusting the hook height ....................
  • Page 5 PFAFF 3811 -2/45 -11/43 -11/45 Integrated sewing unit for working fullness into a material ply PFAFF 3811 -13/45 Integrated sewing unit for working fullness into a material ply with simultaneous edge trimming Sewing machine head : 5487/5489-814/01 N 5487/5489-814/01 5487/5489-814/01-731/12 Stich type : Max.

  • Page 6: Foot Pedal

    Key panel Quick digital motor control panel (see technical literature from the motor manufacturer) Potentiometer 0-15 for adjusting the fullness as allocated to the numbered keys Bi02-10 On/off switch Knee lever for fullness For switching the entire By pressing the knee lever you achieve the following results: work station on and off.
  • Page 7 Bi02-02.CDR Bi02-03.CDR Tape brake on/off (optional) This key is also on the -11/43, -11/45 and -13/45 Sewing without fullness even when there is no tape brake installed. By pressing the key you switch to In this case it has no function whatsoever. “sewing without fullness”.

  • Page 8: Check

    If any damage has occurred, inform the forwarding company and your Pfaff agent immediately. Place the machine in the desired position on a horizontal surface. Connect the compressed air hose (6 mm internal diameter) to coupling 1 (diag. 1).
  • Page 9 Bi34-01.CDR Bi03-03.CDR...

  • Page 10: Direction Of Rotation

    When necessary, fill by pouring oil through hole 1 (fig. 1) in the oil-level sight glass. We recommend Pfaff sewing-machine-oil, article number 280-1-120 or an oil with a mean viscosity of 22.0 mm /s at 40°C and a density of 0.865 g/cm The handwheel must turn in the direction of the arrow (fig.
  • Page 11 Bi08-01 Bi18-05 Bi02-01 Bi08-04.CDR...
  • Page 12 Turn the machine off (mains switch). Thread the needle in accordance with fig. 1 (taking care to maintain the tension; Chapter 11.2) Pull the needle thread approx. 7 cm (2 3/4 inches). Milled nut 1 (fig. 1) + = more tension - = less tension Turn the machine off (mains switch).
  • Page 13 Bi11-02 ca. 7cm Bi11-01.CDR Bi11-04 Bi11-03...
  • Page 14 The pressure from the top feed 1 (fig. 2) and that of the presser foot should be adjusted so that the workpiece is fed perfectly at all sewing speeds. Screw 3 (fig. 1) + = more tension - = less tension Milled ring 4 (milled nut 5) + = more tension - = less tension...
  • Page 15 Bi12-01.CDR Bi12-02.CDR Bi12-03.CDR...

  • Page 16: Across The Sewing Direction

    Note: The bearing disc 1 (fig. 1) is provided with four holes so that the machine can be set at the required needle bar position. After positioning the needle bar (handwheel) insert the cylindrical pin 2 into the desired hole so that it sticks securely in the recess behind the bearing disc, thus ensuring that the selected setting is fixed.
  • Page 17 Bi14-03 Bi14-02.CDR Schematic diagram Bi14-04 Bi14-05...
  • Page 18 At the top dead centre of the needle bar (= adjustment hole “1”; fig.1), the distance between the top edge of the needle plate and the point of the needle must be 11 mm (approx. 1/2 inch) (fig. 2). Bring the needle bar 1 (fig. 3) to its top dead centre (handwheel). Insert the cylindrical pin (see chapter 14) in hole “1”...
  • Page 19 11mm Bi01-01 Bi16-02.CDR Bi14.03...
  • Page 20 With the stitch length set at “0” (stitch length lever 1, fig. 1), the main feed dog 6 (fig. 2) should not move laterally. Loosen limiting screw 2 (fig. 3) to such an extent as that the stitch length “0” can be set with the stitch length adjustment lever 1 (fig.
  • Page 21 Bi17-03.CDR Bi17-03 Bi17-04.CDR Bi17-05x.CDR...
  • Page 22 - stitch length 4 mm - cam setting “0” both bottom feed dogs (main feed dog 6 and differential feed dog 7; fig. 6) must make the same movement when the handwheel is turned. Set the stitch length at 4 mm (stitch length adjustment lever 1; fig. 7). Set the control cam 8 (fig.
  • Page 23 Bi14-02N.CDR Bi12-03.CDR Bi17-16x.CDR Bi17-03 Bi17-04.CDR...
  • Page 24 - stitch length 4 mm - cam setting “0” - needle bar position 0.8 mm below its t.d.c. (top dead centre) the main feed dog 6 (diag 12) and the differential feed dog 7 should not move when the lever 13 (diag 11) is activated). Loosen the feeding motion eccentrics 14 (fig.
  • Page 25 Bi17-04.CDR Bi01-01 Bi12-03.CDR Bi17-16.CDR Bi17-5xx.CDR...
  • Page 26 With the needle bar at its t.d.c. (= adjustment hole “1”) the notches in the feed lifting eccentrics 17 and 18 (fig. 18 and 20) should point directly downwards. Loosen the 2 screws 19 and the two screws 20 (fig. 20). Using the handwheel, bring the needle bar to its t.d.c.
  • Page 27 Bi17-18.CDR Bi01-01 Bi17-20.CDR...
  • Page 28 at the maximum stitch length setting and with the needle bar at its t.d.c. (= adjustment hole “1”; fig. 21): - the main feed dog 6 (fig. 24) and the differential feed dog 7 should be in the middle of the needle plate cutout; - the main feed dog 6 and the differential feed dog 7 should be parallel to the needle plate (fig.
  • Page 29 1.4mm 1.9mm Bi01-01 main feed dog 6 differential feed dog 7 needle plate Bi17-21.CDR Bi20-03.CDR Bi12-03.CDR Bi17-20.CDR...
  • Page 30 With the needle bar 0.8 mm below its t.d.c. (= adjustment hole “4”) there should be a clearance of approx. 16.5 mm (0.65 inches) between the eye of the connecting rod 1 (fig. 2) and the machine housing 2. Bring the needle bar into a position 0.8 mm below its t.d.c. (handwheel) and lock it in this position with the cylindrical pin.
  • Page 31 16.5mm Bi18-17.CDR Bi18-16 Bi01-01 Bi18-05...
  • Page 32 - stitch length 4 mm - cam setting “0” - connecting rod 4 (fig. 5) attached the top feed 5 (fig. 6) and the bottom feed dogs 6 (see chapter 17) must make the same motion when the handwheel is turned. Set the stitch length at 4 mm.
  • Page 33 Bi17-03x.CDR Bi18-04x.CDR Bi12-03.CDR Bi17-16x.CDR Bi01-01 Bi18-05...
  • Page 34 with: - stitch length 4 mm - cam setting “0” - connecting rod 4 (fig. 11) attached the top feed 5 (fig. 12) must touch the bottom feed dog when the bottom feed dog reaches the top edge of the needle plate on its way up (fig. 13). Remove the face cover.
  • Page 35 Bi17-03x.CDR Bi14-03A Bi18-10.CDR Bi14.03 Bi12-03.CDR Bi18-12 Bi17-16x.CDR...

  • Page 36: Basic Stitch Length

    (Adjustment not required for -2/45 since it is adjusted to 2.2 mm ex works) Note: In order to adjust the basic stitch length, the feed settings must be correct, as laid out in chapters 17 and 18. When: - the stitch length is set at 3 mm; - the key (fig.
  • Page 37 Bi18-04x.CDR Bi12-03.CDR Bi12-08 Bi17-03x.CDR 11 perforations = 10 stitches = 30 mm Bi19-05.CDR Bi19-09.CDR...
  • Page 38 With the hand lever 1 (fig. 1) raised the clearance between the presser foot 2 and the needle plate 3 (fig. 3) should be 5 mm. Bring the top feed 4 (fig. 3) to its highest position (handwheel). Lift the presser shaft 5 and slide the 5 mm thick adjustment gauge 6 (fig. 3) from the back, under the presser foot joint.
  • Page 39 Bi14-03 Bi20-03.CDR Bi14-03B...
  • Page 40 The presser foot 2 (fig. 4) should be positioned in such a way that: - the needle enters the middle of the needle hole in the presser foot - the edge of the presser foot is parallel to the needle plate cutout of the bottom feed dog.
  • Page 41 Bi01-01 Bi14-03B Bi14-03 Bi19-07 Bi20-03.CDR Bi19-08...
  • Page 42 With the needle bar at its t.d.c. (t.d.c. = adjustment hole “1”) the notch in the avoiding eccentric 1 should be directly under the axle centre (see arrow in fig. 2). Loosen both screws 2 (fig. 3). Using the handwheel, position the needle bar at its t.d.c. (= adjustment hole “1”, fig. 1) and lock it in this position with the cylindrical pin.
  • Page 43 Bi01-01 Bi20-02.CDR Bi17-20.CDR...
  • Page 44 When the hook carrier 3 (fig. 4) is standing vertical, the clearance between the highest point of the back of the hook and the needle plate support surface should be 0.7 mm (fig. 5). Remove the cover plate 4 (fig. 6). Remove the needle plate 5 and the feed dog 6. Lay the adjustment gauge (No.
  • Page 45 Gauge 0,7mm Stitch plate Hook support surface Gauge 0,7mm Bi20-04.CDR Bi17-05.CDR parallel Stitch plate support surface Bi20-06.CDR Bi18-04x.CDR 0.3mm Bi20-09.CDR...
  • Page 46 Raise the presser foot (hand lever). Remove the cover plate 4 (fig. 6). Remove the needle plate 5 and the feed dog 6. Loosen the screw 13 (fig. 10) in the hook carrier 3. Position the hook carrier 3 vertically (handwheel). Lay the hook adjustment gauge 14 (Part No.
  • Page 47 0:1mm 2° Bi21-10.CDR Bi21-11 Gauge Hook Needle Bi21-13.CDR 3:6mm Bi21-12 Bi21-13 Bi17-05.CDR...
  • Page 48 If, when turning the handwheel - the point of the hook, coming from the right hand side, is just to the righthand side of an 80 Nm needle (fig. 14) - any further upwards movement of the needle bar is blocked by the screw clamp (fig.
  • Page 49 Bi21-15.CDR Bi21-16.CDR Part No. 08-880 137-00 Bi21-17 Bi17-04.CDR...
  • Page 50 (final adjustment) When the hook point reaches the left side of the needle, coming from the right hand side, the top edge of the eye of the needle should be 1.0-1.2 mm underneath the bottom edge of the hook (fig. 18). Additionally, in this position, there should be a clearance of 0.1 mm between the hook and the needle.
  • Page 51 0,1mm Hook Bi21-18.CDR Bi21-19.CDR Bi14-03...

  • Page 52: Rear Needle Guard

    With the needle bar at its t.d.c. (= adjustment hole “3”, fig. 3) the upper edge of the vertical surface of the rear needle guard 1 (fig. 2) should be at the same height as the upper edge of the eye of the needle (arrow in fig. 1). Bring the needle bar to its bottom dead centre (b.d.c.) (handwheel).
  • Page 53 Bi22-21.CDR Bi21-11 Bi01-01 Bi22-04.CDR Bi22-05 Bi22-06...

  • Page 54: Front Needle Guard

    The top edge of the front needle guard finger 1 (fig. 1) should be at the same height as the bottom edge of the hook point when the point of the hook 2, coming from the right hand side, has reached the middle of the needle. The front needle guard finger 1 must be parallel to the hook blade.
  • Page 55 Bi24-01.CDR Bi22-06 0.3 - 0.5mm Bi24-04.CDR...

  • Page 56: Needle Thread Puller

    The needle thread puller 1 (fig. 1) should be attached to the needle bar in such a way that: - it moves freely in the middle of the face slot - it does not come into contact with anything at its top and bottom turning points.
  • Page 57 0.3mm Bi25-01 Bi26-01 Bi26-02 Bi27-01...

  • Page 58: Hook Thread Puller

    The distance between the front edge of the thread regulator 1 (fig. 1) and the rear needle plate edge-guide should be 29 mm. Loosen the thread regulator 1 (fig. 1) (screws 2). Move the thread regulator 1 in accordance with the requirement. Taking care that the thread regulator 1 is laterally in the middle of the thread puller bracket 3, tighten both screws 2.
  • Page 59 29mm Bi28-01 Bi01-01 Bi29-03.CDR Bi29-04.CDR...
  • Page 60 After pressing the key: - the actuating lever 2 should be at “0” on the control cam scale, and - the sewing machine should sew smoothly (without fullness). Switch off the machine (mains switch). Remove the protective cover 1 from the angle encoder. Loosen the retaining screw of the angle encoder a little.
  • Page 61 Tastenfeld von -11/43, -11/45, -13/45 Bi17-16.CDR Bi1703x.CDR Bi31-02.CDR...

  • Page 62: Setting The Gathering Levels

    Note: The operator can allocate any gathering intensity to any key desired. 31.2.1 Setting the gathering level of key Press the Turn the Poti 1 until the desired cam position is reached; test seam. 31.2.2 Setting the gathering levels Example: Material: ........
  • Page 63 Tastenfeld von -11/43, -11/45, -13/45 Bi19-04.CDR Bi31-02.CDR...

  • Page 64: Edge Trimmer

    The needle bar t.d.c. (adjustment hole “5”; fig. 1) = top turning point of the knife. Switch on the edge trimmer (key , LED on; fig. 2). Bring the needle bar to its highest position (handwheel). Adjustment: Turn eccentric 1 until the upper knife is at its top turning point; screws 2 (fig. 3). (no trimming motion) When turning the handwheel and with the edge trimmer switched off, the upper knife should not move up or down.
  • Page 65 Tastenfeld von -11/43, -11/45, -13/45 Bi32- 0.5mm Bi32-05 Bi32-05...
  • Page 66 There should be approx. 1 mm between the left edge of the upper knife and the left edge of the needle plate insert (fig. 6). Move the knife carrier 11 (fig. 7) in accordance with the requirement (screw 12). Requirement: The upper knife 9 should touch the stationary knife with a small amount of pressure (The knife skid must not hit the stationary knife!) Switch on the edge trimmer (key...
  • Page 67 ca. 1mm Bi32-04.CDR Bi32-05 Bi32-08 Bi32-10 Bi32-09...

  • Page 68: Tape Brake

    Switching on: Press the key (fig. 2) (LED on) - Tape brake 1 (fig. 1) will now switch on automatically when a gathering level is selected (keys When the key is pressed (sewing without fullness), the tape brake does not function.
  • Page 69 Bi33-01.CDR Tastenfeld -11/43 -11/45 -13/45 Bi02-03.CDR...

  • Page 70: Sewing Machine

    Oiling the sewing machine see chapter 8.1. Cleaning the sewing machine The required cleaning cycle of the sewing machine is dependent on the following factors: - Single or multiple shift operation - Workpiece dependent dust accumulation - Top speed - Continuous or changing operation Therefore it is only possible to give optimum cleaning instructions for every individual case alone.
  • Page 71 /s at 40°C and a density of 0.847 g/cm at 15°C. We recommend Pfaff sewing machine oil: part No. 280-1-120 105. The oils used must not - or only to a negligible extent - effect swelling or shrinkage of the sealing substances under any operating conditions.
  • Page 72 Aktiengesellschaft Postfach 3020 D-67653 Kaiserslautern Königstr. 154 D-67655 Kaiserslautern Telefon: (0631) 200-0 Telefax: (0631) 172 02 Telex: 45753 PFAFF D Gedruckt in der BRD Printed in Germany Imprimé en R.F.A. Impreso en la R.F.A. Stampato in R.F.G. e a a...

This manual is also suitable for:

3811-11/433811-13/453811-11/45

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