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Pfaff 1571 Adjustment Manual

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1571
1574
Adjustment Manual
1591
1593
This Adjustment Manual applies to machines from the
following serial numbers onwards:
# 7 274 018
296-12-19 443/002
Adjustment Manual engl.01.2020

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Summary of Contents for Pfaff 1571

  • Page 1 1571 1574 Adjustment Manual 1591 1593 This Adjustment Manual applies to machines from the following serial numbers onwards: # 7 274 018 296-12-19 443/002 Adjustment Manual engl.01.2020...
  • Page 2 Reprinting, copying or translation of PFAFF instruction manuals, whether in whole or in part, is not permitted without our prior permission and not without written indication of the source PFAFF Industriesysteme und Maschinen GmbH Hans-Geiger-Str. 12 - IG Nord D-67661 Kaiserslautern...

  • Page 3: Table Of Contents

    .04.04 Preadjusting the needle height ....................9 .04.05 Needle rise, hook clearance, needle height and needle guard (on the PFAFF 1571) ......10 .04.05a Needle rise, hook clearance, needle height and needle guard (on the PFAFF 1574) ......11 .04.06 Needle rise, hook clearance, needle height and needle guard (on the PFAFF 1591 and 1593) ...12...
  • Page 4 Index Contents ....................Page .05.02 Position of the knife holder (on the PFAFF 1574 and 1591) ..........34 .05.03 Knife stroke (on the PFAFF 1571) ..................35 .05.04 Knife stroke (on the PFAFF 1574 and 1591) ................. 36 .05.05 Cutting stroke (on the PFAFF 1571) ..................37 .05.06...

  • Page 5: Adjustment

    Adjustment Adjustment Please observe all notes from Chapter 1 Safety of the instruction manual! In particular care must be taken to see that all protective devices are refi tted properly after adjustment, see Chapter 1.06 Danger warnings of the instruction manual! If not otherwise stated, the machine must be disconnected from the electrical power supply.

  • Page 6: Adjusting The Basic Machine

    Adjustment Adjusting the basic machine Needle position in the direction of sewing .04.01 Requirement The screw 4 from the needle pendulum should be fl ush with the bracket 5 Fig. 15 - 01  Move the needle bar frame 1 ( screws 2 and 3 ) in accordance with the requirement. Screws 3 are accessible through the holes on the back of the housing.

  • Page 7: Needle Position In Sewing Direction

    Adjustment Needle position in the direction of sewing .04.02 Requirement With the stitch length set at "5", in its front and rear point of reversal the needle should be the same distance from the inside edges of the needle hole. Fig.

  • Page 8: Limiting The Needle Bar Frame On The Pfaff 1571And 1591

    Adjustment Limiting the needle bar frame on the PFAFF 1571and 1591 .04.03 Requirement With the stitch length set at "5", when the needle is in its front and rear point of reversal screw 4 should be the same distance from the inside edge of its hole.

  • Page 9: Preadjusting The Needle Height

    Adjustment Preadjusting the needle height .04.04 Requirement With the needle bar at TDC there must be approx. 25 mm between the point of the need- le and the needle plate. 25 mm Fig. 15 - 04  Move the needle bar 1 ( screw 2 ) in accordance with the requirement without turning it.

  • Page 10: Needle Rise, Hook Clearance, Needle Height And Needle Guard (On The Pfaff 1571)

    Adjustment Needle rise, hook clearance, needle height and needle guard .04.05 (on the PFAFF 1571) Requirement With the needle bar positioned 2.0 mm after BDC and the stitch length set at "0.8" 1. the hook point must be at needle centre with a hook-to-needle clearance of 0.05 to 0.1 mm;...

  • Page 11: Needle Rise, Hook Clearance, Needle Height And Needle Guard (On The Pfaff 1574)

    Adjustment Needle rise, hook clearance, needle height and needle guard .04.05a (on the PFAFF 157 4) Requirement With the needle bar positioned 2,4 mm after BDC on both hooks 1. the hook point must be at needle centre with a hook-to-needle clearance of 0.05 to 0.1 mm;...

  • Page 12: Needle Rise, Hook Clearance, Needle Height And Needle Guard (On The Pfaff 1591 And 1593)

    3. the needle guard 6 must touch the needle lightly. Fig. 15 - 06  Turn on the machine  Set the stitch length to "0.8" and sew 3 stitches.(only on the PFAFF 1591).  Turn off the machine  Loosen both screws 1, 2, 3, 4 and 5.

  • Page 13: Needle Position Crosswise To Sewing Direction (On The Pfaff 1571)

    Adjustment Needle position crosswise to sewing direction .04.07 (on the PFAFF 1571) Requirement For maximum stitch length adjustment, the needle should stand in the middle of the needle hole both when entering and exiting the throat plate. Fig. 15 - 07...

  • Page 14: Needle Position Crosswise To Sewing Direction (On The Pfaff 1574)

    Adjustment Needle position crosswise to sewing direction .04.07a (on the PFAFF 1574) Requirement As seen crosswise to the sewing direction, the needles must penetrate in the centre of their needle holes. Fig. 15 - 07a  Shift bearing plate 1 (screws 2, on both sides of the post) according to the requirement.

  • Page 15: Needle Position Crosswise To Sewing Direction (On The Pfaff 1591 And 1593)

    Adjustment Needle position crosswise to sewing direction .04.08 (on the PFAFF 1591 and 1593) Requirement As seen crosswise to the sewing direction, the needle must penetrate in the centre of the needle hole. Fig. 15 - 08  Adjust feed wheel post 1 (screws 2, 3 and 4) according to the requirement.

  • Page 16: Height And Stroke Of The Bobbin Case Opener

    Adjustment Height and stroke of the bobbin case opener .04.09 Requirement 1. The top edges of the bobbin case opener 1 and bobbin case base 3 should be on onelevel. 2. When the bobbin case opener 1 has defl ected the bobbin case to its furthest point, thecatch of the bobbin case should be 0.3 - 0.5 mmfrom the back edge of the needle- plate recess.

  • Page 17: Height Of The Feed Wheel (On The Pfaff 1571)

    Adjustment Height of the feed wheel .04.10 (on the PFAFF 1571) Requirement 1. The loaded sliding wheel 4 should protrude by tooth height (about 0.8 mm) from the throat plate. 2. The unloaded wheel 4 should have about 0.3 mm height clearance.

  • Page 18: Height Of The Feed Wheel (On The Pfaff 1574)

    Adjustment Height of the feed wheel .04.10a (on the PFAFF 1574) Requirement 1. The loaded sliding wheel 4 should protrude by tooth height (about 0.8 mm) from the throat plate. 2. The unloaded wheel 4 should have about 0.3 mm height clearance.

  • Page 19: Height Of The Feed Wheel (On The Pfaff 1591 And 1593)

    Adjustment Height of the feed wheel .04.11 (on the PFAFF 1591 and 1593) Requirement The feed wheel should protrude from the needle plate by tooth height (approx. 0.8 mm) Fig. 15 - 11  Swing out the roller presser.  Loosen screws 1.

  • Page 20: Clearance Between Roller Presser And Feed Wheel

    Adjustment Clearance between roller presser and feed wheel .04.12 Requirement With lever 1 raised the clearance between the roller presser and the feed wheel must be 7 mm. Fig. 15 - 12  Raise lever 1.  Move the presser foot bar ( screws 2 ) in accordance with the requirement. Take care to- ensure that the roller presser is parallel to the feed wheel.

  • Page 21: Roller-Presser

    Adjustment Roller-presser .04.13 Requirement When the roller-presser 1 is resting on the feed wheel 5 it must 1. be parallel to the feed wheel 5 when viewed in the direction of sewing, 2. be in the middle of the needle when viewed crosswise to the direction of sewing and 3.

  • Page 22: Hold-Down Device (Only With Pfaff 1574)

    Adjustment .04.13a Hold-down device (only with PFAFF 1574) Requirement The hold-down 1 should 1. seen in the sewing direction as close as possible to the needle and 2. Stand in the middle of the needle, seen across the sewing direction.

  • Page 23: Automatic Presser-Foot Lifter

    Adjustment Automatic presser-foot lifter .04.14 Requirement When magnet 1 is activated, the roller presser should have a height of 12 mm! Fig. 15 - 14  Move solenoid 1 ( screws 2 ) in accordance with the requirement.  Turn the machine on and check the requirement. ...

  • Page 24: Knee Lever

    Adjustment Knee lever .04.15 Requirement 1. The knee lever must have a little play before the roller-presser is raised. 2. The lever for the roller-presser must drop automatically when the knee lever is presse- das far as it will go. 3.

  • Page 25: Tension Release

    Adjustment Tension release .04.16 Requirement 6 should be at least 0.5 mm apart 1. when lever 1 is raised, 2. when solenoid 4 is pressed. 0,5 mm Fig. 15 - 16  Raise lever 1 and adjust screw 2 (nut 3) in accordance with requirement 1. ...

  • Page 26: Thread Check Spring (On To Pfaff 1571; 1591 And 1593)

    Adjustment Thread check spring .04.17 (on the PFAFF 1571; 1591 and 1593) Requirement 1. The movement of thread check spring 3 should be completed when the needle point- penetrates the fabric (spring stroke approx. 7 mm). 2. When the largest thread loop is formed while the thread is passed around the hook,the thread check spring 3 should rise slightly from its support 1.

  • Page 27: Thread Check Spring (On The Pfaff 1574)

    Adjustment Thread check spring .04.17a (on the PFAFF 1574) Requirement 1. The movement of the thread check spring 3 should be fi nished when the needle points puncture the material (spring defl ection approx. 7 mm). 2. The thread check spring 3 should lift slightly off the support 1 when forming the maximum thread loops while passing the thread around the hook.

  • Page 28: Thread Tension Control -906/11 (On The Pfaff 1591)

    Adjustment Thread tension control -906/11 .04.18 (on the PFAFF 1591) Requirement 1. The tension magnet stroke should be 0.9 mm in the starting position. 2. Adjust the carrier plate in parallel approx. 15 mm on the two nuts 3 so that there is approx.

  • Page 29: Bobbin Winder

    Adjustment Bobbin winder .04.19 Requirements 1. When the bobbin winder is engaged, the winding spindle must be driven reliably. When the bobbin winder is disengaged, the friction wheel 5 must not be moved by drive wheel 1. 2. The bobbin winder must switch itself off, when the fi lled thread is about 1 mm from- the edge of the bobbin.

  • Page 30: Roller-Presser Pressure

    Adjustment Roller-presser pressure .04.20 Regel The material must be fed reliably. No pressure marks may be made on the material. Fig. 15 - 20  Adjust the presser foot pressure with screw 1 in accordance with the requirement. Screw 1 is located under a cover. If the presser foot pressure is low, the lowering speed of the presser foot can- be increased with parameter „202“...

  • Page 31: Lubrication

    Adjustment Lubrication .04.21 Requirement After a running time of 10 seconds a fi ne line of oil should form on a strip of paper held- next to the hook. Fig. 15 - 21  Check whether oil has been fi lled in and that there is no air in the oil lines. ...

  • Page 32: Re-Engage Safety Coupling

    Adjustment Re-engage safety coupling .04.22 The coupling 1 is set by the manufacturer. When the thread jams, thecoupling 1 dis- engages in order to avoid damage to the hooks.A description of how to engage the coupling 1 follows. Fig. 15 - 22 ...

  • Page 33: Adjusting The Edge Trimmer -725/04

    Adjustment Adjust edge trimmer -725/04 Knife carrier position .05.01 (on the PFAFF 1571) Rule When the edge trimmer is switched on and the adjusting wheel 1 is turned until you feel it reach the upper stop, 1. the knife carrier 2 should be parallel to the post and 2.

  • Page 34: Position Of The Knife Holder (On The Pfaff 1571)

    Adjustment Position of the knife holder .05.02 (on the PFAFF 1574 and 1591) Requirement When the thread trimmer is engaged, the centre of the angular knife opening must bele- vel with the top edge of the needle plate. Fig. 15 - 24 ...

  • Page 35: Knife Stroke (On The Pfaff 1571)

    Adjustment Knife stroke .05.03 (on the PFAFF 1571) Rule The knife stroke can be set within a range of 1.0 to 3.5 mm to optimally suit all materials used. Fig. 15 - 25  Turn the eccentric 1 (screws 2) so that the marking of the desired cutting stroke is oppo-...

  • Page 36: Knife Stroke (On The Pfaff 1574 And 1591)

    Adjustment Knife stroke .05.04 (on the PFAFF 1574 and 1591) Requirement The knife stroke can be adjusted over a range from 2.0 to 3.5 mm, allowing the bestpossible adaption to all materials used. Fig. 15 - 26  Adjust crank 1 (nut 2) in slotted lever 3 according to the requirement.
  • Page 37 Adjustment Knife movement .05.05 (on the PFAFF 1571) Rule When the edge trimmer is swung in and the needle is in the needle hole, the movement of the knife 1 should be half way in front of and half way behind the needle when turning the motor shaft manually.

  • Page 38: Cutting Stroke (On The Pfaff 1571)

    Adjustment Cutting stroke .05.06 (on the PFAFF 1574 and 1591) Requirement When the edge trimmer is engaged and the needle is in the needle hole, the stroke of knife 3 should be half in front of and half behind the needle, when the motor shaft isturned by hand.

  • Page 39: Knife Position

     Turn the screw 1 (screw 2) according to the rule.  Carry out a test cut and maybe repeat the adjustment. PFAFF 1574 und 1591  Adjust the knife 3 (screw 4) according to the rule.  Carry out a test cut and maybe repeat the adjustment.

  • Page 40: Adjusting The Thread Trimmer -900/81

    Adjustment Adjusting the thread trimmer -900/81 Resting position of the roller lever / radial position of the control cam .06.01 Requirement 1. When the thread trimmer is in is resting position, lever 5 should be touching piston 6 and the roller of roller lever 7 should be 0.3 mm away from control cam 3. 2.

  • Page 41: Position Of The Thread Catcher Holder

    Adjustment Position of the thread catcher holder .06.02 Requirement 1. There should be a minimum amount of play between toothed wheel 3 and toothed segment 4. 2. Both in the neutral position and the foremost position of the catcher, the distancebet- ween the toothed segment 4 and the outer edge of the thread catcher holder 1should be the same (see arrow).

  • Page 42: Distance Between Thread Catcher And Needle Plate

    Adjustment Distance between thread catcher and needle plate .06.03 Requirement During its swivel movement thread catcher 1 should not pass the edge of the needle plate (see arrow).. Fig. 15 - 32  Move thread catcher 1 (screws 2, two screws) parallel to the thread catcher holder in ac- cordance with the requirement.

  • Page 43: Position Of The Thread Catcher

    Adjustment Position of the thread catcher .06.04 Requirement 1. The bottom edge of the thread catcher 1 should be at a distance of 0.1 mm from the- positioning fi nger of the bobbin case 5. 2. When the thread trimmer is in its neutral position, the rear edge of thread cat- chershould be positioned approx.

  • Page 44: Knife Position And Knife Pressure

    Adjustment Knife position and knife pressure .06.05 Requirement 1. The knife 1 should be touching the needle plate. 2. The knife pressure should be set as low as possible but the cutting operation should still be carried out reliably. Fig. 15 - 34 ...

  • Page 45: Bobbin Thread Retaining Spring

    Adjustment Bobbin thread retaining spring .06.06 Requirement 1. The bobbin thread clamp spring should be guided reliably in the thread groove of the thread catcher 3. 2. The tension of the bobbin thread spring clamp should be as low as possible, but the bobbin thread should be held reliably after the cutting operation.

  • Page 46: Manual Cutting Test

    Adjustment Manual cutting test .06.07 Requirement 1. When thread catcher 1 is on its forward stroke, it must not carry bobbin thread 3 forward too. 2. When thread catcher 1 is in its front position, bobbin thread 3 must be held reliably by hook 4.

  • Page 47: Linkage Rod (Only On The Pfaff 1574)

    Adjustment Linkage rod .06.08 (only on the PFAFF 1574) Requirement The driving levers 1 should be parallel when the thread trimmer is the neutral position. Fig. 15 - 37  Adjust the driving levers 1 (screws 2) according to the requirement.

  • Page 48: Parameter Settings

    Adjustment Parameter settings Overview of parameter functions .07 .01 ( with BDF S5 ) After switching on the machine, call up the input mode in which the individual parameters can be called up by pressing the corresponding function. All parameter groups or also indi- vidual ones can be protected by a code against unauthorised access.

  • Page 49: Overview Of Parameter Functions (With Bdf P1)

    Adjustment Overview of parameter functions .07 .02 ( with BDF P1 ) After switching on the machine, call up the input mode in which the individual parameters can be called up by pressing the corresponding function. All parameter groups or also indi- vidual ones can be protected by a code against unauthorised access.

  • Page 50: Parameter Input Example (With Bdf S5)

    Adjustment Example of a parameter entry .07 .03 ( with BDF S5 )  Switch the machine on.  Press the TE/Speed key twice to access the parameter entry function. The status text "TE" appears on the display and the pedal functions are locked to prevent an accidental start-up of the machine.

  • Page 51: Parameter Input Example (With Bdf P1)

    Adjustment Example of a parameter entry .07 .04 ( with BDF P1 )  Switch the machine on.  Call up input mode  Call parameter input.  For example, call up parameter “2201”...
  • Page 52 Adjustment  If necessary, Enter the code number, see chapter 9.10 Entering / changing the code number.  For example, set value 1.  Conclude the input.

  • Page 53: Parameter List For Control Dac Compact

    0 = OFF , 1 = ON Open thread tension after trimming and roller presser 1704 lift 0 - 1 0 = OFF , 1 = ON 1700 300°(1571) 1720 Thread tension ventilation position 0° - 359° 290° 300°(1591) 290°(1593)
  • Page 54 1 - 8 5 = needle up 6 = Target stitch in sewing at 1574 7 = Not high 8 = knee switch 23°± 6°(1571) Adjust sewing motor on sewing head 23°± 6°(1591) 8025 31°± 6° (Needle top edge stitch plate)
  • Page 55 Adjustment 8101 Access rights for function group 100* (Info) 0 - 1 8104 Programming access rights* 0 - 1 8114 Access rights for function group 1400*(Roller presser) 0 - 1 8115 Access rights for function group 1500* (Placed stitch) 0 - 1 8117 Access rights for function group 1700* (Thread tension) 0 - 1...
  • Page 56 2= half stitch key on the machine head (E3) 3= free (E4) 4= knee switch (E5) 5= start inhibitor (E6) 6= photo cell (E7) 7= Material thickness with PFAFF 3834 (E8) 8= free (E9) 9= free (E10) A= free (E11) B= free (E12)
  • Page 57 Adjustment 9003 Outputs test A1= Roller presser lift A2= free A3= free A4= Thread trimming A5= free A6= Tension ventilation A7= free A8= free A9= free A10= free A11= free 9000 A12= Sewing engine is running A13= free A14= free A15= free A16= LED on the machine head A17= free...

  • Page 58: Error Messages And Description

    Adjustment Error messages and description Error Description E 001 System error E 002 Sewing motor E002/BB/xxx BB = 20: Deadman 01: Switch on speed 02: Positioning 03: Start distance 04: Read distance 05: Set translation 06: Read translation 07: Error reset 08 Write parameters 09: Read version 0A: Read speed...
  • Page 59 Adjustment Error Description E 040 Stepper motor 1 E040/xx xx= 1: Wrong command 2: Overtemperature 3: Excess current E 041 Stepper motor 2 E041/xx xx= 1: Wrong command 2: Overtemperature 3: Excess current E 042 Stepper motor 3 E042/xx xx= 1: Wrong command 2: Overtemperature 3: Excess current E 101...

  • Page 60: Sewing Motor Errors

    Adjustment Error Description E 317 Interface to the controller E317 / xx xx = 1: buffer overfl ow 2: Receive ring buffer overfl ow 3: Sender input buffer overfl ow 11: Send 12: receiving 42: Checksum wrong 45: Timeout 45: Interface protocol 46: Timeout when sending the machine data Sewing motor errors Error...

  • Page 61: Update (With Sd Card Or Usb)

    Adjustment Updating (with SD card or USB)  After downloading the PFP tool and the control software, open the PFP program.  Select the machine type and under control unit SD-CARD or USB.  The software version is displayed under report. ...

  • Page 62: Circuit Diagrams

    91-191 591-95 Circuit diagram Part 1 Version 02.10.18 Circuit Diagrams 91-191 591-95 +3,3V GN/YE IN_ana1 0V_Logik Sewing Motor Ground Nähmotor control box function Compact A PH input manuel backtack 5 rd +24V stab. B PH +24V magn. input half stitch 6 bu IND.
  • Page 63 Circuit diagram 91-191 591-95 Version 02.10.18 Part 2 Reference Needle Reference Needle Phase 2A Step motor 3 shield shield Phase 1A Needle YEWH Phase 2B OGWH Phase 1B Phase 2A shield Step motor 2 shield Phase 1A YEWH Feed wheel Phase 2B OGWH Phase 1B...
  • Page 64 PFAFF Industriesysteme und Maschinen GmbH Hans-Geiger-Str. 12 - IG Nord D-67661 Kaiserslautern Telefon: +49 - 6301 3205 - 0 Telefax: +49 - 6301 3205 - 1386 E-mail: info@pfaff-industrial.com Gedruckt in der BRD / Printed in Germany / Imprimé en la R.F .A. / Impreso en la R.F .A...

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