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- Page 1 2235 ADJUSTMENT MANUAL This Adjustment Manual is valid for machines from the following serial numbers onwards: # 2 799 145 296-12-19 218/002 Justieranleitung engl. 09.12...
- Page 2 The reprinting, copying or translation of PFAFF Adjustment 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...
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Page 3: Table Of Contents
Index Contents ................Page Adjustment ........................... 4 Notes on adjustment ......................4 1.02 Tools, gauges and other accessories for adjusting ............4 Abbreviations ......................... 4 Explanation of the symbols ....................4 Adjusting the basic machine ....................5 .05.01 Basic position of the balance wheel (adjustment aid) ............5 .05.02 Balance weight ........................ -
Page 4: 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 instruc- tion manual! If not otherwise stated, the machine must be disconnected from the electrical power supply. -
Page 5: Adjusting The Basic Machine
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). Fig. -
Page 6: Balance Weight
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. -
Page 7: Zero Position Of The Unison Feed
Adjustment Zero position of the unison feed .05.03 Requirement When the stitch length is set at "0", the top and bottom feed dogs and the needle bar should not make any feeding motion when the balance wheel is turned. Fig. 1 - 03 ●... -
Page 8: Feeding Motion Of The Unison Feed
Adjustment Feeding motion of the unison feed .05.04 Requirement When the needle bar is positioned at b.d.c. (balance wheel position 180°), and the ma- ximum stitch length is set, the top and bottom feed dogs and the needle bar should not make any feeding motion when the reverse-feed lever is pressed. -
Page 9: Lifting Motion Of The Bottom Feed Dog
Adjustment Lifting motion of the bottom feed dog .05.05 Requirement When the balance wheel is positioned at 180°, the feed dog should be at t.d.c. Fig. 1 - 05 ● Adjust eccentric 1 (screws 2) in accordance with the requirement. Use the kit with the Order No. - Page 10 Adjustment Fig. 1 - 05a Activate lifting movement ● Lifting movement is activated if connection part 8 is swiveled in as shon in fi gures 1 - 05a, and screws 9 (M6 x 16) and 10 (M5 x 16) have been attached. Deactivate lifting movement ●...
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Page 11: Height Of The Bottom Feed Dog
Adjustment Height of the bottom feed dog .05.06 Requirement 1. When the stitch length is set at "0" and the needle bar is positioned at b.d.c. (balance wheel position 180°), the bottom feed dog should be positioned 0.5 mm horizontally above the top edge of the needle plate. -
Page 12: Feeding Stroke Difference
Adjustment Feeding stroke difference .05.07 Requirement With the maximum stitch length set, when the balance wheel is turned the feeding stro- kes of the needle and the bottom feed dog should be the same. Fig. 1 - 07 ● With connecting rod 1 (nut 2) increase ("+") or reduce (-) the needle feed stroke in accordance with the requirement. -
Page 13: Preliminary Adjustment Of The Needle Height
Adjustment Preliminary adjustment of the needle height .05.08 Requirement When the needle bar is positioned at t.d.c. (balance wheel position 0°), the clearance between the needle point and the needle plate should be 22 mm. Fig. 1 - 08 ● Without turning it, re-position needle bar 1 (screw 2) in accordance with the requirement. -
Page 14: Needle Rise, Hook Clearance And Needle Height
Adjustment Needle rise, hook clearance and needle height .05.09 Requirement With the stitch length set at "4.5" and in the needle rise position (see table) 1. The hook point 5 should be positioned at "needle centre" with a hook-to-needle clea- rance of 0.05 –... -
Page 15: Top Feed Stroke
Adjustment Top feed stroke .05.10 Requirement With adjustment wheel 1 set at "5", the top feed dog 7 and presser foot 4 should each rise by 5.0 mm. Fig. 1 - 10 ● Remove the bottom feed dog and set adjustment wheel 1 at "5". ●... -
Page 16: Top-Feed Lifting Motion
Adjustment Top-feed lifting motion .05.11 Requirement The top feed dog should just have reached the needle plate when the presser foot lift is set at 5 mm and the needle descending from above is 2 mm above the needle plate. Fig. -
Page 17: Adjusting The Potentiometer For Speed Reduction
Adjustment Adjusting the potentiometer for speed reduction .05.12 On machines with drive P45 PD2-L and P74 ED-L .05.12.01 ● Switch on the machine ● Set the smallest stroke "0". ● Using the stroke adjustment function, call up the smallest stroke (LED off), see the Con- trol Panel Instruction Manual. -
Page 18: Machine Drive Home Position
Adjustment Machine drive home position .05.13 On machines with drive P45 PD2-L .05.13.01 ● Switch on the machine. ● When the machine is commissioned, "Pulley" appears on the display. ● Call up the parameter input by pressing the scroll key. ●... -
Page 19: On Machines With Drive Ab 321
Adjustment On machines with drive AB 321 .05.13.03 ● Press button "P" on the control panel, while simultaneously switching the machine on. ● Enter code 3112 via the numbered keys and confi rm by pressing "E". ● Enter parameter 290 via the numbered keys and confi rm by pressing "E". ●... -
Page 20: Bobbin Winder
Adjustment Bobbin winder .05.14 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). -
Page 21: Thread Check Spring And Thread Regulator
Adjustment Thread check spring and thread regulator .05.15 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. -
Page 22: Sewing Foot Pressure
Adjustment Sewing foot pressure .05.16 Requirement The material should be fed properly even at maximum speed and with the smallest stroke. Fig. 1 - 14 ● Turn adjustment wheel 1 in accordance with the requirement. -
Page 23: Lubrication
Adjustment Lubrication .05.17 Requirement After a running time of 10 seconds a thin fi lm of oil should be visible on paper strip 1 when this is held over the hook. Fig. 1 - 15 ● Check that the machine is fi lled with oil and that the oil lines are free of air. ●... -
Page 24: Limiting The Stitch Length
Adjustment Limiting the stitch length .05.18 When exchanging the parts kit with stitch lengths differing from the as-deliv- ered state of the machine, limit the max. stitch length using stitch adjuster 4. Fig. 1 - 16 ● Set the desired max. stitch length at control button 1 (on model CN = 6.0 mm, on model CN9 + C/DN9 = 9 mm) ●... -
Page 25: Adjusting The Thread Trimmer -900/91
Adjustment Adjusting the thread trimmer -900/91 Basic position of the thread trimmer .06.01 Requirement 1. When the thread trimmer is in its resting position (cylinder extended), the point of thread catcher 6 should be fl ush with the cutting edge of knife 7 (see arrow). 2. -
Page 26: Control Cam To Roller Lever Clearance (Resting Position)
Adjustment Control cam to roller lever clearance .06.02 (resting position) Requirement When the thread trimmer is in its resting position (balance wheel position 270°) there should be a clearance of 0.1 mm between the roller lever 5 and the outside edge of con- trol cam 1. -
Page 27: Adjusting The Control Cam
Adjustment Adjusting the control cam .06.03 Requirement When the take-up lever is at the top of its stroke (balance wheel position 70°), the cutting operation should just have been completed. Fig. 1 - 19 ● Adjust control cam 1 (screw 2) in accordance with the requirement. -
Page 28: Knife Pressure
Adjustment Knife pressure .06.04 Requirement The thread should be cut reliably at all times. Fig. 1 - 20 ● Increase ("+") or reduce ("-") the knife pressure accordingly with screw 1. -
Page 29: Manual Cutting Test
Adjustment Manual cutting test .06.05 Requirement Both the needle and the bobbin thread should be cut neatly. Fig. 1 - 21 ● Bring thread catcher 1 by hand to its front position. ● Take a double thread and place it into the catcher slot. ●... -
Page 30: Circuit Diagrams
Block diagram Version 29.03.07 Circuit diagrams Block diagram PFAFF 2235 PLUS with control pack P45 PD-L Synchronizer PD 6 Optional Light barrier power Netzteil supply unit Ministop drive unit (long) with incremental transducer software Speed control unit download Control unit QA40 PD Q1;... -
Page 31: Block Diagram Pfaff 2235 Plus With Ab 321
Block diagram Block diagram PFAFF 2235 PLUS with AB 321 Synchronizer PD 6 PD 6 2235 (Option) -900 Adapter 1113229 B 41 B 80 ST 2 B 776 B 18 = Thread tension release for Software download BDF = Control panel = Thread clamp PFA = Automatic presser foot lift = Machine running signal... -
Page 32: Circuit Diagrams
Circuit diagrams Version 28.03.07 Circuit diagrams Reference list for the Circuit diagrams 91-191 520-95 Controller P45 PD-L Control panel (PicoTop) Keyboard Sewing lamp Sewing motor Main switch Pedal speed control unit Reverse sewing or intermediate backtacks key Raise needle without thread trimming key Presser foot lift key Thread clamp key (increase needle thread tension) Knee switch for automatic presser foot lift... - Page 33 91-191 520-95 Circuit diagrams Part 1 Version 28.03.07...
- Page 34 Circuit diagrams 91-191 520-95 Version 28.03.07 Part 2...
- Page 35 91-191 520-95 Circuit diagrams Part 3 Version 28.03.07...
- Page 36 PFAFF Industriesysteme und Maschinen AG Hans-Geiger-Str. 12 - IG Nord D-67661 Kaiserslautern Phone: +49 - 6301 3205 - 0 Fax: +49 - 6301 3205 1386 E-mail: info@pfaff-industrial.com Printed in Germany...
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