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Pfaff Industrial 1245 Adjustment Manual

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1245
1246
ADJUSTMENT MANUAL
This adjustment manual applies to machines
from the serial number 7 262 454 and
software version 0435/002 onwards.
296-12-19 303/001
adjustment Manual engl. 10.15

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  • Page 1 1245 1246 ADJUSTMENT MANUAL This adjustment manual applies to machines from the serial number 7 262 454 and software version 0435/002 onwards. 296-12-19 303/001 adjustment Manual engl. 10.15...
  • 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

    Safety clutch ........................17 .04.13 Needle thread tension release ..................... 18 .04.14 Thread check spring (with the PFAFF 1245 and PFAFF1246 without thread trimmer -900/56) . 19 .04.15 Thread check spring (with the PFAFF 1246 with thread trimmer -900/56) ....... 20 .04.16 Bobbin winder ........................
  • Page 4 Table of Contents Contents ..................Page .05.04 Engaging solenoid ........................ 26 .05.05 Release cam ........................27 .05.06 Engaging lever ........................28 .05.07 Connecting rod ........................29 .05.08 Control cam (pre-calibrating) ....................30 .05.09 Catch ............................ 31 .05.10 Connecting rod (only with the PFAFF 1246) ................ 32 .05.11 Thread catcher height (make this adjustment on both thread catchers with the PFAFF 1246) ........................33...

  • Page 5: Adjustment

    Adjustment Adjustment The illustrations in this chapter show the PFAFF 1245 single- needle machine. Various settings must be duplicated with the PFAFF 1246 two-needle machine, i.e. in the left and right hook area. An indication is given in the respective chapters where some illustrations are to be considered as a mirror image.

  • Page 6: Adjusting Basic Machine

    Adjustment Adjusting basic machine Feed dog position crossways to sewing direction .04.01 Rule The bottom transporter should have the same clearance on the right and left in the needle plate recess. Fig. 13 - 01 O Loosen both of the screws 1 and 2. O Adjust the rock shaft 3 according to rule 1.

  • Page 7: Feed Dog Position In Sewing Direction

    Adjustment Feed dog position in sewing direction .04.02 Rule The bottom transporter should have the same clearance at the front and back in the needle plate recess in forward and reverse feed at the maximum stitch length setting. Fig. 13 - 02 O Set the maximum stitch length.

  • Page 8: Feed Dog Height

    Adjustment Feed dog height .04.03 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 - 03 O Set the stitch length to "0". O Move the feed dog to its upper turning point by turning the handwheel.

  • Page 9: Needle Position To Needle Hole

    Adjustment Needle position to needle hole .04.04 Rule The needle should pierce the middle of the needle hole exactly (with stitch length regulation "0"). Fig. 13 - 04 O Unscrew the top feed foot 1 and the presser foot 2. O Set the stitch length to "0"...

  • Page 10: Needle Height (Pre-Calibrating)

    Adjustment Needle height .04.05 (pre-calibrating) Rule When the needle bar is in b.d.c., the clearance between the needle bar and needle plate should be 15 mm. Fig. 13 - 05 O Adjust the needle bar 1 (screw 2) without twisting according to the rule.

  • Page 11: Bottom And Top Feed Sliding Movement

    Adjustment Bottom and top feed sliding movement .04.06 Rule The top and bottom feed should not move when the reverse-feed lever is activated with maximum stitch length regulation and when the needle bar is in b.d.c. Fig. 13 - 06 O Set the maximum stitch length.

  • Page 12: Bottom Transporter Stroke Movement (Only In Machine Versions With A P)

    Adjustment Bottom transporter stroke movement .04.07 (only in machine versions with a P) Rule 1. The bottom transporter should be in its upper turning point when the needle bar is in b.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 13: Hook-To-Needle Clearance, Needle Bar Rise, Needle Height And Needle Guard

    Hook-to-needle clearance, needle bar rise, needle height and needle guard .04.08 (The setting of the left hook is omitted with the PFAFF 1245) Rule When the needle rise is positioned 2.0 mm after b.d.c. of the needle bar and with stitch length regulation "3",...

  • Page 14: Top Feed Lift

    Adjustment Top feed lift .04.09 Rule The presser foot 1 and top feed foot 2 should each lift 7.0 mm off the needle plate when turning the handwheel at the maximum top feed lift position and when the stitch length is set to "0".

  • Page 15: Top Feed Stroke Movement

    Adjustment Top feed stroke movement .04.10 Rule The presser foot 6 and the needle point should reach the needle plate at the same time at maximum top feed lift if the presser foot 1 rests on the needle plate. Fig. 13 - 10 O Loosen the screw 1.

  • Page 16: Bobbin Case Opener

    Adjustment Bobbin case opener .04.11 (make this adjustment on both bobbin case openers with the Pfaff 1246). Rule The needle thread should not become jammed between the bobbin case opener 1 and the bobbin case base 3 or between the retaining lug 4 and the retaining dog of the needle plate.

  • Page 17: Safety Clutch

    Adjustment Safety clutch .04.12 The safety clutch 4 is set ex works. If the thread jams, the safety clutch 4 disengages to avoid damage to the hooks. The process to engage the clutch is described below. Fig. 13 - 12 O Remove the thread jam.

  • Page 18: Needle Thread Tension Release

    Adjustment Needle thread tension release .04.13 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 19: Thread Check Spring (With The Pfaff 1245 And Pfaff1246 Without Thread Trimmer -900/56)

    Adjustment Thread check spring .04.14 (with the PFAFF 1245 and PFAFF1246 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 20: Thread Check Spring (With The Pfaff 1246 With Thread Trimmer -900/56)

    Adjustment Thread check spring .04.15 (with the PFAFF 1246 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). The length of the thread check spring deflection may deviate slightly upwards or downwards for reasons relating to the sewing technology.

  • Page 21: Bobbin Winder

    Adjustment Bobbin winder .04.16 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 22: Presser Foot Pressure

    Adjustment Presser foot pressure .04.17 Rule The material should be transported properly even at top sewing speed. No pressure marks should appear on the material. Fig. 13 - 17 O Turn the screw 1 according to the rule.

  • Page 23: Adjusting Thread Trimmer -900/56

    Adjustment Adjusting thread trimmer -900/56 Control cam .05.01 (pre-calibrating) Rule 1. The bearing surface of the control cam 5 should be positioned centrally to the pawl 8 on the side. 2. When the thread lever is at t.d.c., the start of the largest eccentricity of the bearing surface (in the direction of rotation) should be under the tip of the pawl 8.

  • Page 24: Tripping Lever

    Adjustment Tripping lever .05.02 Rule The bevelled bolt of the tripper lever 6 (see arrow) should drop easily into the track of the control cam 7 when the engaging lever 6 is activated in the needle rise position. Fig. 13 - 19 O Unscrew the screw 1 and swivel the connecting rod 2 away.

  • Page 25: Pawl

    Adjustment Pawl .05.03 Rule There should be a clearance of 0.3 mm between the largest eccentricity of the control cam 1 and the pawl 2 when the thread trimmer attachment is in the neutral position. 0.3 mm Fig. 13 - 20 O Position the control cam 1 with its largest eccentricity under the pawl 2 by turning the handwheel.

  • Page 26: Engaging Solenoid

    Adjustment Engaging solenoid .05.04 Rule There should be a clearance of 0.3 mm between the engaging lever 2 and the pawl 3 in the needle rise position and when the engaging solenoid 5 is activated. Fig. 13 - 21 O Move the machine to the needle rise position by turning the handwheel. O Loosen the screw 1 until the engaging solenoid is hard to push.

  • Page 27: Release Cam

    Adjustment Release cam .05.05 Rule There should be a clearance of approx. 0.3 mm between the tripping lever bolt and the bottom of the cam track in the needle rise position and when the engaging lever 4 is dropped in place. 0.3 mm Fig.

  • Page 28: Engaging Lever

    Adjustment Engaging lever .05.06 Rule When the needle bar is at t.d.c. and the tripping lever 3 is in the basic position, there should be a clearance of approx. 0.3 mm between the bolt 4 and the outside diameter of the control cam..

  • Page 29: Connecting Rod

    Adjustment Connecting rod .05.07 Rule The lever 6 should lift off the stop 7 when the shaft 9 starts to move with a sliding motion. Fig. 13 - 24 O Fasten the ball head to the tripping lever 3 with the screw 2. O Loosen the nuts 4 (right and left-hand thread).

  • Page 30: Control Cam (Pre-Calibrating)

    Adjustment Control cam .05.08 (pre-calibrating) Rule The movement of the thread catcher should start when the tripping lever 3 is dropped in place and the point of the needle coming from b.d.c. is positioned 12 mm above the needle plate. Fig.

  • Page 31: Catch

    Adjustment Catch .05.09 Rule There should be a clearance of approx. 5 mm between the catch 1 and the tripping lever 6 when the thread trimmer attachment is in the neutral position. 5 mm Fig. 13 - 26 O Gently secure the catch 1 and the cover plate 2 with the screws 3. O Move the catch 1 to the stop in the direction of the arrow and move it sideways according to the rule O Tighten the screws 3 in this position.

  • Page 32: Connecting Rod (Only With The Pfaff 1246)

    Adjustment Connecting rod .05.10 (only with the PFAFF 1246) 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 attachment is in the neutral position. Fig.

  • Page 33: Thread Catcher Height

    Adjustment Thread catcher height .05.11 (make this adjustment on both thread catchers with the PFAFF 1246) Rule If the thread catcher 2 is pushed forward by hand when the thread lever is at t.d.c., the lower thread catcher point should be 0.1 mm above the back of the hook 4. Fig.

  • Page 34: Knife (Make This Adjustment On Both Knives With The Pfaff 1246)

    Adjustment Knife .05.12 (make this adjustment on both knives with the PFAFF 1246) Rule 1. The elongated hole of the knife 3 should run parallel to the knife carrier; the knife should not rest on the metal edge (see arrow). 2.

  • Page 35: Thread Catcher Reverse Position

    Adjustment Thread catcher reverse position .05.13 (make this adjustment on both thread catchers with the PFAFF 1246) Rule The back edge of the thread catcher 3 should be flush with the cutting edge of the knife 4 when it is in the front turning point. Fig.

  • Page 36: Bobbin Thread Clamp Spring

    Adjustment Bobbin thread clamp spring .05.14 (make this adjustment on both clamp springs with the PFAFF 1246) Rule There should be a clearance of 0.3 mm between the clamp spring 5 and the underside of the thread catcher. The tips of the clamp spring should be flush with the back edge of the thread catcher 4 when the thread catcher 4 is in the front turning point (see arrow).

  • Page 37: Tension Release Lever

    Adjustment Tension release lever .05.15 Rule There should be a clearance of approx. 7 mmbetween the left edge of the release lever 8 and the housing 9 when the thread trimmer attachment is in the neutral position. The tension discs should be loosened far enough that the needle thread can be pulled through easily when the tip of the thread catcher 5 is at the same level as the back edge of the stop cam 6 of the needle plate (see arrow) when the sewing foot is fitted.

  • Page 38: 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 presser foot must lift 7 mm off the needle plate and 2. The tension discs of the thread tension must be 0.5 mm apart from each other. Fig.

  • Page 39: Adjusting Lifting Lever Without Subclass -911/97

    Adjustment Adjusting lifting lever without subclass -911/97 Rule When the knee lever is activated 1. The presser foot must lift 7 mm off the needle plate and 2. The tension discs of the thread tension must be 0.5 mm apart. Fig.

  • Page 40: Parameter Settings

    Adjustment Parameter settings O The separate parameter list for the machine describes how to select the user level and change parameters (see chapter 1.1.2 Technician level). Internet update of control P40 CD O You need a dongle with the appropriate machine software to be able to perform a control update.

  • Page 41: 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 42 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 43 Notes...
  • Page 44 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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