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Pfaff 1293 Adjustment Manual

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1293
1294
ADJUSTMENT MANUAL
This adjustment manual applies to machines
from the serial number 7 262 545 and software
version 0435/002 onwards.
296-12-19 297/002
adjustment Manual engl. 07.15

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  • Page 1 1293 1294 ADJUSTMENT MANUAL This adjustment manual applies to machines from the serial number 7 262 545 and software version 0435/002 onwards. 296-12-19 297/002 adjustment Manual engl. 07.15...
  • Page 2 Reprinting, reproduction and/or translation of PFAFF adjustment manuals (including parts thereof) is only permitted with our prior agreement and citation of the source. PFAFF Industriesysteme und Maschinen GmbH Hans-Geiger-Str. 12 - IG Nord D-67661 Kaiserslautern...

  • Page 3: Table Of Contents

    Needle thread tension release ..................... 20 .04.16 Thread check spring (with the PFAFF 1293 and PFAFF 1294 without thread trimmer -900/56) ..................21 .04.17 Thread check spring (with the PFAFF 1294 with thread trimmer -900/56) ......22 .04.18 Bobbin winder ........................23...
  • Page 4 Table of Contents Contents ..................Page Adjusting thread trimmer -900/56 ..................24 .05.01 Control cam (pre-calibrating) ....................24 .05.02 Tripping lever spring mechanism ..................25 .05.07 Thread catcher height ......................30 .05.10 Bobbin thread clamp spring ....................33 .05.11 Control cam (pre-calibrating) ....................34 Adjusting lifting lever with subclass -911/97 ................

  • Page 5: Adjustment

    The illustrations in this chapter show the PFAFF 1294 two-needle sewing machine. Various settings must be carried out only on one side with the PFAFF 1293 single-needle sewing machine, i.e. in the right hook area. Observe and comply with all instructions in the operating manual's chapter 1 Safety! In particular make sure that all safety covers are installed again correctly after making adjustments, see chapter 1.06 Operating manual...

  • Page 6: Adjusting Basic Machine

    Adjustment Adjusting basic machine Feed dog position .04.01 Rule 1. The feed dog should have the same clearance on the right and left in the needle plate cutout. 2. The feed dog should have the same clearance in the needle plate cutout in its front and rear turning point with maximum stitch length regulation.
  • Page 7 Adjustment Feed dog height .04.02 Rule The bottom transporter should protrude above the needle plate by the tooth height in its upper turning point at stitch length regulation "0". Fig. 13 - 02 O Set the stitch length to "0". O Move the feed dog to its upper turning point by turning the handwheel.

  • Page 8: Needle Position To Needle Hole

    Adjustment Needle position to needle hole .04.03 Rule The needle should pierce the middle of the needle hole exactly (with stitch length regulation "0"). Fig. 13 - 03 O Set the stitch length to "0" and move the needle bar to t.d.c. O Loosen the screws 1, 2 and 3.

  • Page 9: Needle Height (Pre-Calibrating)

    Adjustment Needle height .04.04 (pre-calibrating) Rule When the needle bar is in b.d.c., the clearance between the needle bar and needle plate should be 14 mm. Fig. 13 - 04 O Adjust the needle bar 1 (screw 2) without twisting according to the rule.
  • Page 10 Adjustment Feeding motion .04.05 Rule The feed dog should not move when the reverse-feed lever is activated with maximum stitch length regulation and when the needle bar is in a position 3 mm after t.d.c. Fig. 13 - 05 O Set the maximum stitch length. O Loosen the screws 1 until the eccentric 2 is difficult to turn on the shaft.
  • Page 11 Adjustment Feed lifting motion .04.06 Rule 1. The bottom transporter should be in its upper turning point when the needle bar is in a position 3 mm after t.d.c. 2. The tooth tips of the feed dog should be at the same level as the surface of the needle plate with maximum stitch length regulation when the needle points pierce the middle of the needle holes.
  • Page 12 Adjustment Home position of roller presser drive .04.07 Rule 1. The clamping surfaces of the lever 1 in the front turning point position should be hori- zontal with maximum stitch length regulation. 2. The lever 3 should be in the centre of the cutout in the lever 1. 3.
  • Page 13 Adjustment Synchronisation of roller presser and feed dog .04.08 Rule The feed motion of the roller presser and feed dog must be equal. Fig. 13 - 08 O Turn the lever 1 (screw 2) according to the rule.
  • Page 14 Adjustment Release of roller presser when reverse sewing .04.09 Rule 1. The roller presser should be released when sewing in reverse (cylinder 8 activated). 2. When the roller presser and feed dog are lowered, there should be a clearance of 0.5 mm between the c-lock pin 6 and the bearing 7 when the cylinder 8 is not activated.

  • Page 15: Hook-To-Needle Clearance, Needle Bar Rise, Needle Height And Needle Guard

    O Adjust the needle height according to rule 2. O Align the needle guard 5 according to rule 3. With the PFAFF 1294 it is important to readjust the position of the connect- ing rod to the thread trimmer after changing the needle gauge (see chapter...
  • Page 16 Adjustment Bobbin lifter .03.11 Rule The needle thread should not become jammed between the bobbin lifter 2 and the bobbin case base 4 or between the retaining lug 5 and the retaining dog of the needle plate (see arrows). Fig. 13 - 11 O Unscrew the covers 1 (from the back with the left post).
  • Page 17 Adjustment Safety clutch .04.12 The safety clutch 4 is set ex works. If the thread jams, the safety clutch 4 dis- engages to avoid damage to the hooks. The process to engage the clutch is de- scribed below. Fig. 13 - 12 O Remove the thread jam.
  • Page 18 Adjustment Clearance between roller presser and needle plate .04.13 Rule The clearance from the raised roller presser to the needle plate should be 5 mm in machines with a roller presser. Fig. 13 - 13 O Raise the roller presser with the hand lever. O Reduce the pressure on the roller presser (screw 1).
  • Page 19 Adjustment Roller presser pressure .04.14 Rule The material should be transported properly even at top sewing speed. Fig. 13 - 14 O Turn the screw 1 according to the rule. The pressure can also be increased with the screw 2 in machine versions with a D.

  • Page 20: Needle Thread Tension Release

    Adjustment Needle thread tension release .04.15 Rule When the presser foot is raised, both tension discs should be at least 0.5 mm apart. The clearance of 0.5 mm is the minimum size and may be over 1 mm with thick types of yarn. 0.5 mm Fig.

  • Page 21: Thread Check Spring (With The Pfaff 1293 And Pfaff 1294 Without Thread Trimmer -900/56)

    Adjustment Thread check spring .04.16 (with the PFAFF 1293 and PFAFF 1294 without thread trimmer -900/56) Rule The movement of the thread check spring 5 should be finished when the needle point punctures the material (spring deflection = approx. 7 mm).

  • Page 22: Thread Check Spring (With The Pfaff 1294 With Thread Trimmer -900/56)

    Adjustment Thread check spring .04.17 (with the PFAFF 1294 with thread trimmer -900/56) Rule The movement of the thread check springs 1 and 6 should be finished when the needle points puncture the material (spring deflection = approx. 7 mm).

  • Page 23: Bobbin Winder

    Adjustment Bobbin winder .04.18 Rule 1. When the bobbin winder is switched on, the bobbin winder spindle should be moved easily; when the bobbin winder is switched off, the friction wheel 5 must not touch the drive wheel 1. 2. The bobbin winder should switch off automatically when the fill amount is still around 1 mm from the edge of the bobbin.

  • Page 24: Adjusting Thread Trimmer -900/56

    Adjustment Adjusting thread trimmer -900/56 Control cam .05.01 (pre-calibrating) Rule 1. The control cam 1 should be positioned centrally to the bearing support cutout 5. 2. When the needle bar is at t.d.c., the screws 2 should be visible from the front and run parallel to the bed plate.

  • Page 25: Tripping Lever Spring Mechanism

    Adjustment Tripping lever spring mechanism .05.02 Rule It should be possible to push the tripping lever 3 approx. 1 mm in the direction of the bed plate when the thread trimmer is in the neutral position (s-ring washer) Fig. 13 - 20 O Turn the screw 1 (nut 2) according to the rule.
  • Page 26 Adjustment Tripping lever path .05.03 Rule 1. The tripping lever bolt 6 should drop easily into the track of the control cam 7 when the engaging lever 5 is activated. 2. The tripping lever 6 should pass by the right side of the bracket 3 unimpeded and engage in the engaging lever 5 behind the bracket 3 after trimming the thread.
  • Page 27 Adjustment Engaging solenoid .05.04 Rule 1. The bracket 1 should be fastened in the centre of its range and parallel to the right edge of the mounting plate. 2. The core of the solenoid 3 should protrude approx. 4 mm out of the magnet housing when the thread trimmer is in the neutral position.
  • Page 28 PFAFF 1294. The thread catcher drive rod 1 should have a length of 128 mm with the PFAFF 1293. 2. There should be a clearance of approx. 1 mm between the catch 5 and the lever 6 when the thread trimmer is in the neutral position.
  • Page 29 Adjustment Connecting rod ( .05.06 only with the PFAFF 1294 Rule The length of the connecting rod 2 should correspond to the clearance between the shaft 3 and the shaft 4 when the thread trimmer is in the neutral position.

  • Page 30: Thread Catcher Height

    Adjustment Thread catcher height .05.07 Rule There should be a clearance of approx. 0.7 mm between the underside of the thread catcher 4 and the bobbin case sewing head 5.. Fig. 13 - 25 O Loosen the screws 1 and 2. O Adjust the shaft according to the rule.
  • Page 31 Adjustment Thread catcher neutral position .05.08 Rule There should be a clearance of approx. 4 mm between the tip of the thread catcher 3 and the cutting edge of the knife 4 when the thread trimmer is in the neutral position. 4 mm Fig.
  • Page 32 Adjustment Knife pressure .05.09 Rule The knife 1 should rest gently on the edge of the thread catcher with light pressure if the front edge of thread catcher 3 is halfway past the cutting edge of the knife. Fig. 13 - 27 O Adjust the knife 1 (screws 2) according to the rule.

  • Page 33: Bobbin Thread Clamp Spring

    Adjustment Bobbin thread clamp spring .05.10 Rule 1. Do not allow the thread catcher 4 to compress the bobbin thread clamp spring 3 at any stage. 2. The bobbin thread should be securely clamped after the cutting operation. 3. It should be easy to insert and remove the bobbin from the hook. Fig.

  • Page 34: Control Cam (Pre-Calibrating)

    Adjustment Control cam .05.11 (pre-calibrating) Rule The cutting movement should just have ended when the take-up lever is in its upper turn- ing point. Fig. 13 - 29 O Turn the control cam 1 (screws 2) according to the rule.
  • Page 35 Adjustment Release lever .05.12 Rule There should be a clearance of approx. 1 mm between the tripping lever 3 and the release lever 5 and the needle thread tension should still be effective when the bolt of the tripping lever 3 is dropped into the control cam track 4 and the needle bar is in b.d.c. Fig.
  • Page 36 Adjustment Release rod .05.13 Rule 1. The bolt 3 should abut the lower end of the connecting rod 1 in the elongated hole when the roller presser rests on the needle plate. 2. The tension discs of the needle thread tension may not be separated from each other in this position.

  • Page 37: Adjusting Lifting Lever With Subclass -911/97

    Adjustment Adjusting lifting lever with subclass -911/97 Rule When the automatic presser foot lift is activated 1. The roller presser must lift 5 mm off the needle plate and 2. The tension discs of the thread tension must be 0.5 mm apart. Fig.

  • Page 38: Adjusting Lifting Lever Without Subclass -911/97

    Adjustment Adjusting lifting lever without subclass -911/97 Rule When the knee lever is activated 1. The roller presser must lift 5 mm off the needle plate and 2. The tension discs of the thread tension must be 0.5 mm apart. Fig.

  • Page 39: Parameter Settings

    O The "DongleCopy" PC tool is needed to upload software onto the dongle. A description of how to perform an Internet update of control P40 CD as well as the "DongleCopy" PC tool can be downloaded from the Internet address https://partnerweb.pfaff-industrial.com/ .

  • Page 40: Circuit Diagrams 91-191 585-95

    91-191 585-95 Circuit diagram Part 1 Version 30/07/2015 Circuit Diagrams 91-191 585-95 PED-A PED-B PED-C PED-D n.c. PED-GEN P-ANA shield A PH B PH M1.1 IND. shield GN/YE Ground Sewing Motor Nähmotor n.c. n.c. n.c. +3,3V n.c. IN-EXT1 IN-EXT2 IN-EXT3 IN-EXT4 N.C.

  • Page 41: Circuit Diagram

    Circuit diagram 91-191 585-95 Version 30/07/2015 Part 2 180° SYNC. shield Boot_PN BOOT X_IN RXBF- TXBF+ +15V RST_IN RST_PN RXBF+ TXBF- +15V +3,3V IN_ana1 0V_Logik 24V only inputs +24V stab. +24V magn. 24V power output trimmer output back tack output footlift output thread tension +24V magn.
  • Page 42 PFAFF Industriesysteme und Maschinen GmbH Hans-Geiger-Str. 12 - IG Nord D-67661 Kaiserslautern Tel.: +49 - 6301 3205 - 0 Fax: +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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