High-speed zigzag sewing machine organized with iink take-up and transverse rotary hook (51 pages)
Summary of Contents for Pfaff POWERline 2571 ME PLUS
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2571 PLUS / PREMIUM 2574 PLUS / PREMIUM SERVICE MANUAL 2591 PLUS / PREMIUM This service manual applies to machines from software version 0389/001 and serial number 2 766 760 onwards 296-12-19 129/002 Justieranleitung dtsch. 01.11...
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The reprinting, copying or translation of PFAFF Service Manuals, whether in whole or in part, is only permitted with our previous authorization and with written reference to the source. PFAFF Industriesysteme und Maschinen AG Hans-Geiger-Str. 12 - IG Nord D-67661 Kaiserslautern...
Needle rise, hook clearance, needle height and needle guard (on the PFAFF 2571 ME) ... 12 .05.08 Needle rise, hook clearance, needle height and needle guard (on the PFAFF 2574 ME ) ... 14 .05.09 Needle rise, Gripper distance, Needle height and Needle guard (on the PFAFF 2591 ME) ..16 .05.10...
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Bobbin thread retaining spring ..................... 46 .07 .07 Manual cutting test ......................47 .07 .08 Linkage rod (only for the PFAFF 2574 ME) ................48 List of parameters for control P320 / P321 ............... 49 Error Messages and Description..................54 Motor Errors......................... 55 Updating the machine software via internet ................
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 instruc- tion manual! If not otherwise stated, the machine must be disconnected from the electrical power supply.
Adjustment Adjusting the basic machine Basic position of the balance wheel .05.01 (adjustment aid) Requirement When the needle bar is positioned at t.d.c., the marking "0" on the scale should be level with the top edge of the belt guard (see arrow). 127-01 Fig.
Adjustment Balance weight .05.02 Requirement When the needle bar is positioned at b.d.c. (balance wheel position 180°) the largest ec- centricity of the balance weight 1 should be at the top. Fig. 1 - 02 ● Adjust balance weight 1 (screw 2) in accordance with the requirement.
Adjustment Needle position in the direction of sewing .05.03 (on the 2571 ME and 2591 ME) 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.
Adjustment Needle position in the direction of sewing .05.04 (on the 2574 ME) Requirement The needle must penetrate the middle of the needle hole as viewed in the direction of sewing. Fig. 1 - 04 ● Move the needle bar frame 1 ( screws 2, 3 and 4 ) in accordance with the requirement.
Adjustment Limiting the needle bar frame .05.05 (Not applicable for PFAFF 2574 ME.) 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.
Adjustment Preliminary adjustment of the needle height .05.06 Requirement When the needle bar is positioned at t.d.c. (handwheel position 0°) there should be a gap between upper edge needle bar and upper edge needle pendulum of about 54 mm (2571/91) or 58 mm. (2574) Fig.
Adjustment Needle rise, hook clearance, needle height and needle guard .05.07 (on the PFAFF 2571 ME) Requirement With the needle bar positioned 2.0 mm after BDC (balance wheel position 202°) 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;...
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Adjustment ● Set stitch length at "0.8". ● Loosen screws 1, 2, 3, 4 and 5 . ● Select parameter 605. ● Unscrew the needle plate. ● Turn the handwheel four times in the direction of rotation. ● Bring the handwheel into position 202° (= needle bar position 2.0mm after b.d.c.) ●...
Adjustment Needle rise, hook clearance, needle height and needle guard .05.08 (on the PFAFF 2574 ME ) Requirement With the needle bar positioned 2.0 mm after BDC on both hook (balance wheel position 202°) and the stitch length set at "0.8"...
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Adjustment ● Unscrew the needle plate. ● Turn the handwheel four times in the direction of rotation. ● Bring the handwheel into position 202° (= needle bar position 2.0mm after b.d.c.) ● Set both hook points to the centre of the needle, taking care to see that the needles are not defl...
Adjustment Needle rise, Gripper distance, Needle height and Needle guard .05.09 (on the PFAFF 2591 ME) Requirement With the needle bar positioned 2.0 mm after BDC (balance wheel position 202°) 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;...
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Adjustment ● Tighten screws 2 allowing for bevel gear wheel movement. ● Move collar 7 up against bevel gear wheel 8 and tighten screws 1. ● Screws 5 remain loosened for further adjustments. ● Adjust needle guard 6 (screw 9) according to requirement 3. When changing a clamp take care that the markings 10 and 11 are on one side.
Adjustment Needle position crosswise to sewing direction .05.10 (on the PFAFF 2571 ME) Requirement As seen crosswise to the sewing direction, the needle must penetrate in the centre of the needle hole. Fig. 1 - 10 ● Turn screws 1 (screws 2, on both sides of the post) according to the requirement.
Adjustment Needle position crosswise to sewing direction .05.11 (on the PFAFF 2574) Requirement As seen crosswise to the sewing direction, the needles must penetrate in the centre of the needle holes. Fig. 1 -10 ● Shift bearing plate 1 (screws 2, on both sides of the post) according to the requirement.
Adjustment Needle position crosswise to sewing direction .05.12 (on the PFAFF 2591 ME) Requirement As seen crosswise to the sewing direction, the needle must penetrate in the centre of the needle hole. Fig. 1 - 11 ● Adjust feed wheel post 1 (screws 2, 3 and 4) according to the requirement.
Adjustment Height and stroke of the bobbin case opener .05.13 Requirement 1. The top edges of the bobbin case opener 1 and bobbin case base 3 should be on one level. 2. When the bobbin case opener 1 has defl ected the bobbin case to its furthest point, the catch of the bobbin case should be 0.3 - 0.5 mm from the back edge of the needle plate recess.
Adjustment Height of the feed wheel .05.14 (on the 2571 ME) Requirement 1. When pressure is applied to the feed wheel 4, it should protrude from the needle plate by tooth height (approx. 0.8 mm) 2. When no pressure is applied to the feed wheel 4 , it should have a vertical play of approx.
Adjustment Height of the feed wheel .05.15 (on the 2574) Requirement 1. When pressure is applied to the feed wheel 4, it should protrude from the needle plate by tooth height (approx. 0.8 mm) 2. When no pressure is applied to the feed wheel 4 , it should have a vertical play of approx.
Adjustment Height of the feed wheel .05.16 (on the 2591) Requirement The feed wheel should protrude from the needle plate by tooth height (approx. 0.8 mm) Fig. 1 - 16 ● Swing out the roller presser. ● Loosen screws 1. ●...
Adjustment Roller-presser .05.17 Requirement When the roller-presser 1 is resting on the feed wheel 6 it must 1. be parallel to the feed wheel 6 when viewed in the direction of sewing, 2. be in the middle of the (needle when viewed in the direction of sewing and 3.
Adjustment Clearance between roller presser and feed wheel .05.18 Requirement 1. With a resting roller-presser there should be a gap between the lift piece 1 and the housing of about 3mm. 2. With a raised roller-presser the distance between roller-presser and feed wheel should be 8mm.
Adjustment Knee lever .05.19 Requirement 1. When the knee lever is pressed the roller-presser should raise up 7mm 2. Before the roller-presser raises up, the knee lever should have a little bit of clearance. Fig. 1 - 18 ● Turn screw 1 (nut 2) according to requirement 1 . ●...
Adjustment Tension release .05.20 Requirement With the roller-presser raised the tension shims 3 should be about 0.5mm loosened from each other. 0,5 mm Fig. 1 - 19 ● Raise roller-presser and calibrate lever 1 (screw 2) according to the requirement.
Adjustment Thread check spring and thread regulator .05.21 Requirement 1. The movement of thread regulator 3 must be completed when the needle point enters the material. 2. When the thread loop is at its largest while being passed around the hook, the check thread spring 3 should rise slightly from the rest 1.
Adjustment Bobbin winder .05.22 Requirement 1. When the bobbin winder is engaged, the winding spindle must be driven reliably. When it is disengaged, friction wheel 3 should not be touching drive wheel 1. 2. When it is switched off, the bobbin winder must click securely into its end position (knife raised).
Adjustment Sewing foot pressure .05.23 Requirement 1. The material must be fed smoothly. 2. No pressure marks should be visible on the material. Fig. 1 - 23 ● Turn adjustment screw 1 in accordance with the requirement.
Adjustment Lubrication .05.24 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. 1 - 23 ● Check whether oil has been fi lled in and that there is no air in the oil lines. ●...
Adjustment Re-engaging the slip-clutch .05.25 Clutch 1 is adjusted at the works. In the case of a thread jamming, clutch 1 will disengage, in order to avoid damage to the hooks. The following describes how to re-engage clutch 1. Fig. 1 - 24 ●...
Adjustment Adjusting the edge trimmer -725/04 Position of the knife holder on model 2571 .06.01 Requirement When the thread trimmer is engaged and the adjusting wheel has been turned to its high- est position 1. the knife holder 2 must be parallel to the post and 2.
Adjustment Position of the knife holder on model 2591 .06.02 Requirement When the thread trimmer is engaged, the centre of the angular knife opening must be level with the top edge of the needle plate. Fig. 1 - 26 ● Switch off the machine and engage the edge trimmer. ●...
Adjustment Knife stroke on model 2571 ME .06.03 Requirement The knife stroke can be adjusted over a range from 1.0 to 3.5 mm, allowing the best possi- ble adaption to all materials used. Fig. 1 - 28 ● Turn eccentric 1 (screws 2) so that the marking of the desired cutting stroke is opposite the marking on clamp collar 3.
Adjustment Knife stroke on model 2591 ME .06.04 Requirement The knife stroke can be adjusted over a range from 2.0 to 3.5 mm, allowing the best pos- sible adaption to all materials used. Fig. 1 - 29 ● Adjust crank 1 (nut 2) in slotted lever 3 according to the requirement.
Adjustment Cutting stroke on model 2571 ME .06.05 Requirement When the edge trimmer is engaged and the needle is in the needle hole, the stroke of knife 1 should be half in front of and half behind the needle, when the motor shaft is turned by hand.
Adjustment Cutting stroke on model 2591 ME .06.06 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 is turned by hand.
When the edge trimmer is engaged, the knife should rest lightly on the needle plate insert, but no whistling sound should occur during trimming. Fig. 1 - 32 PFAFF 2571 ME ● Adjust screw 1 (screw 2) according to the requirements. ● Carry out a cutting test and repeat adjustment if necessary.
Adjustment Adjusting the thread trimmer -900/81 Resting position of the roller lever / radial position of the control cam .07 .01 Requirement 1. When the thread trimmer attachment is at rest lever 7 should fi t closely to plunger 5 and the roller on roller lever 4 should be 0.3mm away from control cam 1.
Adjustment Position of the thread catcher holder .07 .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 distance between the toothed segment 4 and the outer edge of the thread catcher holder 1 should be the same (see arrow).
Adjustment Distance between thread catcher and needle plate .07 .03 Requirement During its swivel movement thread catcher 1 should not pass the edge of the needle plate (see arrow in magnifi cation). Fig. 1 - 34 ● Move thread catcher 1 (screws 2, two screws) parallel to the thread catcher holder in accordance with the requirement.
Adjustment Position of the thread catcher .07 .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 catcher should be positioned approx.
Adjustment Knife position and knife pressure .07 .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.
Adjustment Bobbin thread retaining spring .07 .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 bob- bin thread should be held reliably after the cutting operation.
Adjustment Manual cutting test .07 .07 Requirement 1. When thread catcher 1 is on its forward stroke, it must not carry bobbin thread 3 for- ward too. 2. When thread catcher 1 is in its front position, bobbin thread 3 must be held reliably by hook 4.
Adjustment Linkage rod .07 .08 (only for the PFAFF 2574 ME) Requirement When the thread trimmer is in its resting position, the drive levers 1 must be parallel. Fig. 1 - 40 ● Adjust drive levers 1 (screws 2) in accordance with the requirement.
Adjustment List of parameters for control P320 / P321 The operator has free access to the "100" parameters. Parameters "200" - "800" can only be changed after entering a code number and many only be changed by authorised personnel. Pedal controlled start backtack I - II (I = OFF , II = ON) Reverse rotation (I = OFF , II = ON)
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Adjustment Roller-presser fi eld discharge (OFF = I, ON = II) I - II I = roller-presser is lowered slowly. Should be set for high foot pressure II = roller-presser is lowered quickly. Should be set for low foot pressure Single stitch button assignment 1 - 3 1 = Single stitch, 2 = Needle up,...
Adjustment Error Messages and Description Error Description System error Sewing motor E002/BB/xxx BB = 20: Deadman 02: Position forwards 03: Position in reverse 05: Position by shortest route 09: Write parameter 10: Speed 0A: Reset stitch counter 0B: Stop after xxx stitches 30: Timeout for increasing speed 31: Timeout from uncertain positioning 32: Timeout from deadman command...
Adjustment Updating the machine software via internet The machine software can be updated with PFAFF fl ash programming. For this purpose the PFP boot program (from version 3.25 on) and the appropriate control software for the machine type must be installed on a PC. The transfer of the data to the machine can be carried out with a null modem cable (part no.
Adjustment The software update is carried out, the update progress is shown on the bar display of the PFP boot program. ● During the up-dating procedure the machine must not be switched off. ● When the update has been completed, switch off the machine and end the PFP boot pro- gram.
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● A plausibility control is carried out and, if necessary, a cold start. ● To update the step motor software please contact your PFAFF representa- Fig. 1 - 27 tive. More information and assistance is at your disposal in the fi le "PFPHILFE.TXT", which can be called up from the PFP boot program by pressing the "help"...
Circuit diagrams Circuit diagrams Reference list for circuit diagrams 91-191 544-95 PFAFF P 321ED Control Device PICOTOP or BDF S3 Control Panel OTE (Sewing Head Auto Select) DX355 Needle pendulum Sewing lamp Sewing motor Feed wheel step motor Roller-presser step motor...