Related Manuals for Pfaff 1243-712/02
Summary of Contents for Pfaff 1243-712/02
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Page 1: Instruction Manual
® Industrial 1243 -712/02 INSTRUCTION MANUAL This instruction manual applies to machines from the following serial numbers onwards: # 2 565 145 296-12-18 354/002 Betriebsanleitung engl. 06.09... - 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 Industrie Maschinen GmbH Postfach 3020 D-67653 Kaiserslautern Königstr. 154 D-67655 Kaiserslautern...
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Page 3: Table Of Contents
Danger warnings ......................1 - 4 Proper use ........................ 2 - 1 Specifications ......................3 - 1 PFAFF 1243-712/02 ....................3 - 1 Models and subclasses ....................3 - 1 Machine disposal ..................... 4 - 1 Transportation, packing and storage ..............5 - 1 Transportation to customer’s premises .............. -
Page 4: Contents
Contents Contents ................Chapter - Page Removing /inserting the bobbin case ................9 - 3 Threading the bobbin case / adjusting the thread tension ..........9 - 3 Threading needle thread/adjusting needle thread tension ..........9 - 4 Care and maintenance ................... 10 - 1 Servicing and maintenance intervals ................ -
Page 5: Safety
Safety Safety 1.01 Regulations This machine has been made according to the European regulations indicated in the conformity and manufacturer’s declarations. In addition to this instruction manual, please also observe all generally accepted statutory and other legal requirements, including those of the user’s country, and the valid pollution control regulations! The locally valid regulations of the social insurance institution responsible for occupational accidents, or other supervisory authorities, must be strictly adhered to! -
Page 6: Safety Symbols
● The user must ensure that none of the safety devices are removed nor put out of working order. ● The user must ensure that only authorized persons operate and work on the machine. For further information please refer to your PFAFF agency. 1 - 2... -
Page 7: Operating And Technical Staff
Safety Notes for operating and technical staff Operating staff 05.01 Operating staff are the persons responsible for setting up, operating and cleaning the machine and for removing any disturbances in the sewing area. The operating staff must be sure to observe the following items: ●... -
Page 8: Danger Warnings
Safety Danger warnings A working area of 1 m must be kept free both in front of and behind the machine, so that easy access is possible at all times. Never put your hands or fingers in the sewing area during sewing! Danger of injury by the needle! While setting or adjusting the machine do not leave any objects on the table nor in the needle plate area! Objects may be trapped or flung out of the... -
Page 9: Proper Use
PFAFF PFAFF PFAFF PFAFF 1243-712/02 is a single-needle, lockstitch, flatbed sewing machine for industrial stitching work. Any use of this machine which is not approved by the manufacturer shall be considered as improper use! The manufacturer shall not be held liable for any... -
Page 10: Specifications
Fuse protection: ................. See motor service manual Working noise level: Emission level at workplace PFAFF 1243-712/02, at a speed of 800 spm.: ............78 dB(A) Noise measurement in accordance with DIN 45 635-48-A-1 Subject to alteration or comparable thicknesses of other thread types Models and subclasses Model B: .............. -
Page 11: Disposal Of The Machine
Disposal of the machine Disposal of the machine The proper disposal of the machine is the responsibility of the user. The materials used for the machine are steel, aluminium, brass and various plastics. The electrical equipment consists of plastics and copper. The machine must be disposed of in accordance with applicable local pollution control regulations. -
Page 12: Transportation, Packing And Storage
Transportation, packing and storage Transportation, packing and storage Transportation to customer's premises Within the Federal Republic of Germany, complete machines (with table and motor) are delivered without packing. Machines without table (only sewing heads) and machines intended for exports are packed. Transportation inside the customer's premises The manufacturer cannot be made liable for transportation inside the customer's premises nor to other operating locations. -
Page 13: Explanation Of The Symbols
Explanation of the symbols Explanation of the symbols In this Instruction Manual, work to be carried out and important information are drawn to your attention by symbols. The symbols have the following meanings: Note, information Cleaning, care Lubrication Servicing, repairing, adjustment, maintenance (only to be carried out by specialist personnel) 6 - 1... -
Page 14: Controls
Controls Controls On/off switch ● Switch the machine on or off by turning on/off switch 1. The illustrated on/off switch is fitted to machines with Quick motors. If other motors are used, a different switch may be fitted. Fig. 7 - 01 Pedal (on versions with one pedal) = Neutral position = Sewing... -
Page 15: Top Feed Stroke Adjustment
Controls Top feed stroke adjustment Switch off the machine! Danger of injury due to unintentional starting of the machine! ● The top feed stroke is adjusted by re- positioning lever 1. To do this, remove cover 2 at the rear side of the machine and loosen screw 3. -
Page 16: Installation And Commissioning
Installation and commissioning Installation and commissioning The machine must only be installed and commissioned by qualified personnel! All relevant safety regulations must be strictly adhered to! If the machine is delivered without a table, be sure to use a stand and table that will reliably support the weight of the machine with its motor. -
Page 17: Tensioning The V-Belt
Installation and commissioning Tensioning the v-belt .01.02 ● Loosen nuts 1. ● Tension v-belt by adjusting bracket 2..● Tighten nuts 1. Fig. 8-02 shows a Quick motor. If a different motor is used, please refer to the instruction manual of the motor manufacturer. -
Page 18: Fitting The Lower Belt Guard
Installation and commissioning Fitting the lower belt guard .01.04 ● Position belt guard 1 so that motor pulley and v-belt can run freely. Fig. 8-04 shows a Quick motor. If a different motor is used, please refer to the instruction manual of the motor manufacturer. -
Page 19: Fitting The Synchronizer
Installation and commissioning Fitting the synchronizer .01.06 ● Slide synchronizer 1 onto the shaft. ● Slightly tighten screws 2. ● Insert plug of the synchronizer into the control box. ● Adjust synchronizer (see Chapter 11.05.14 Adjusting the synchronizer). Fig. 8 - 06 Assembling the reel stand .01.07 ●... -
Page 20: Mounting The Thread Retainers
Installation and commissioning Mounting the thread retainers .01.08 ● Screw the thread retainers 1 and 2 into the tapped holes on the top side of the machine and fix them with nuts 3 and 4. When mounting the thread retainers care must be taken to see that the thread retainer with the weak spring (recognizable ➊... -
Page 21: Setting Up
Setting up Setting up All regulations and instructions in this instruction manual are to be observed. Special attention is to be paid to all Notes on Safety! All setting up work is only to be carried out by appropriately trained personnel. Before all preparation work, the machine is to be switched off at the on/off switch or disconnected from the electricity supply by removing the plug from the mains! -
Page 22: Winding The Bobbin Thread, Adjusting The Thread Tension
Setting up Winding the bobbin thread, adjusting the thread tension Fig. 9 - 02 ● Place an empty bobbin 1 onto bobbin spindle 2. ● Thread the bobbin in accordance with Fig. 9-02 and wind it clockwise around the bobbin 1 a few times. ●... -
Page 23: Removing /Inserting The Bobbin Case
Setting up Removing /inserting the bobbin case Turn the machine off! Danger of injury if the machine is started accidentally! Removing the bobbin case: ● Raise take-up lever as far as possible. ● Open the cover of the hook compartment, raise latch 1 and remove bobbin case 2. -
Page 24: Threading Needle Thread/Adjusting Needle Thread Tension
Setting up Threading needle thread/adjusting needle thread tension Fig. 9 - 05 Switch off the machine! Danger of injury due to unintentional starting of the machine! ● Thread needle thread as shown in Fig. 9-05. Be sure to thread the needle from the left. ●... -
Page 25: Care And Maintenance
Care and maintenance Care and maintenance Servicing and maintenance intervals Clean the hook compartment ......daily, more often if in continuous operation Check the hook oil-container ................once a week Clean the hook ....................once a week General lubrication ..................twice a week Lubricating the head parts ................ -
Page 26: General Lubrication
Switch off the machine! Danger of injury! Only use oil with a mean viscosity of 22.0 mm²/s at 40ºC and a density of 0.865 g/cm³ at 15ºC. We recommend PFAFF sewing machine oil, part no. 280-1-120 144. 10 - 2... -
Page 27: Lubricating The Hook
Only use oil with a mean viscosity of 22.0 mm /s at 40º C and a density of 0.865 g/cm 15º C! We recommend PFAFF sewing machine oil. Order-No. 280-1-120 144. Fig. 10 - 03 Setting the machine upright Setting the machine upright... -
Page 28: Adjustment
Adjustment Adjustment Notes on adjusting All adjustments in these adjustment instructions are based on a completely installed machine and must only be carried out by appropriately trained mechanics trained mechanics trained mechanics trained mechanics. Covers on the trained mechanics machine, which have to be removed and replaced for checks and adjustment work, are not mentioned here. -
Page 29: Adjustment Of The Basic Machine
Adjustment Adjustment of the basic machine Needle position in needle hole .04.01 Requirement The needle must be exactly centred in the needle hole. Fig. 11 - 01 ● Loosen screws 1, 2 and 3. ● Turn the balance wheel to set the needle just above the needle hole. ●... -
Page 30: Needle Height (Preliminary Adjustment)
Adjustment Needle height (preliminary adjustment) .04.02 Requirement With the needle bar at b.d.c. the clearance between needle bar and needle plate must be 23 mm. Fig. 11 - 02 ● Position the height of needle bar 1 (screws 2) according to Requirement, but do not turn it. -
Page 31: Hook-To-Needle Clearance, Needle Rise, Needle Height And Needle Guard
Adjustment Hook-to-needle clearance, needle rise, needle height and needle guard 04.03 Requirement When the needle bar is positioned at 1.8 mm after b.d.c. 1. The point of the hook must be pointing to the centre of the needle and have a side clearance of 0.05 –... - Page 32 Adjustment 0.05 - 0.1 mm Fig. 11 - 03 ● Tighten screws 1. ● Position the hook point towards the centre of the needle, taking care to ensure that the needle is not deflected by needle guard 5. ● While ensuring that the bevel pinion 4 is not too close, and that the hook does not have too much play, tighten screws 2.
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Page 33: Bobbin Opener
Adjustment Bobbin opener .04.04 Requirement The needle thread must neither be jammed between bobbin opener 1 and bobbin case base 3, nor between the projection 4 and the retaining trip of the needle plate. Fig. 11 - 04 ● Thread the machine and load test material. ●... -
Page 34: Safety Coupling
Adjustment Safety coupling .04.05 The safety coupling 4 is set by the manufacturer. If the thread jams, the safety coupling 4 disengages to prevent damage to the hook. A description of how to re-engage the coupling in follows. Fig. 11 - 05 ●... -
Page 35: Top Feed Lifting Motion
Adjustment Top feed lifting motion .04.06 Requirement When the balance wheel is turned, lifting presser 3 and needle point 6 must reach the needle plate at the same time. Fig. 11 - 06 ● Push lever 1 (screw 2) fully up in its slot. ●... -
Page 36: Presser Foot Lift
Adjustment Presser foot lift .04.07 Requirement 1. With the needle bar at its b.d.c., pick up 1 1 1 1 1 must be 172 mm 172 mm 172 mm 172 mm from the needle plate. 172 mm 2. When the lift is set at a maximum, the presser foot 5 5 5 5 5 must be 20 mm 20 mm 20 mm 20 mm... -
Page 37: Needle-Thread Tension Release
Adjustment Needle-thread tension release .04.08 Requirement With the take-up lever at b.d.c. the tension disks must be apart by their maximum clear- ance of 1.0 mm. Fig. 11 - 08 ● Set take-up lever at b.d.c. ● Turn eccentric 1 (screws 2) until the tension disks are at their maximum clearance. ●... -
Page 38: Pressure Of The Lifting Presser
Adjustment Pressure of the lifting presser .04.09 Requirement The material must be reliably held, even at the highest sewing speed. Fig. 11 - 09 ● Turn screw 1 according to Requirement..11 - 11... -
Page 39: Thread Check Spring
Adjustment Thread check spring .04.10 Requirement The movement of thread check spring 5 must be finished when the needle point enters the material (= = = = = spring stroke of about 7 mm). Fig. 11 - 10 ● Adjust stop 1 (screw 2) according to Requirement. ●... -
Page 40: Bobbin Winder
Adjustment Bobbin winder .04.11 Requirement 1. With the bobbin winder engaged, friction wheel 5 must be driven reliably. 2. With the bobbin winder disengaged, friction wheel 5 must not run against drive wheel 1. 3. The bobbin winder must switch itself off when the filled thread is about 1 mm from the rim of the bobbin. -
Page 41: Adjusting The Thread Trimmer -900/56
Adjustment Adjusting the thread trimmer -900/56 Pre-adjusting the control cam 05.01 Requirement 1. The bearingsurface of control cam 5 must be laterally in the middle of pawl 8. 2. With the take-up lever at its TDC, the beginning of the largest eccentricity of the bearing surface (in the direction of rotation) must be underneath the point of pawl 8. -
Page 42: Tripping Lever
Adjustment Tripping lever .05.02 Requirement In needle rise position, the flattened pin of control lever 6 (see arrow) must drop easily into the track of control cam 7 when activating lever 8 is activated. Fig. 11 - 13 ● Screw out screw 1 and swing out connecting rod 2. ●... -
Page 43: Pawl
Adjustment Pawl .05.03 Requirement With the thread-trimming mechanism in resting position, there must be a distance of 0.3 mm between the largest eccentricity of control cam 1 and pawl 2. 0,3 mm Fig. 11 - 14 ● Position the largest eccentrictiy of control cam 1 underneath pawl 2 by turning the balance wheel. -
Page 44: Engaging Solenoid
Adjustment Engaging solenoid .05.04 Requirement In needle rise position and with engaging solenoid 5 activated, there must be a distance of 0.3 mm between engaging lever 2 and pawl 3. Fig. 11 - 15 ● Bring the machine to needle rise position by turning the balance wheel. ●... -
Page 45: Release Trip
Adjustment Release trip .05.05 Requirement In needle rise position and with control lever 4 engaged, there must be a clearance of approx. 0.3 mm between the bolt of the control lever and the base of the cam track. 0,3 mm Fig. -
Page 46: Engaging Lever
Adjustment Engaging lever .05.06 Requirement With the needle bar at TDC and with control lever 3 at starting position, there must be a clearance of approx. 0.3 mm between bolt 4 and the outer diameter of control cam 5. Fig. 11 - 17 ●... -
Page 47: Linkage Rod
Adjustment Linkage rod .05.07 Requirement When shaft 9 begins its sliding motion, lever 6 must simultaneously lift from stop 7. Fig. 11 - 18 ● Affix spherical head 1 to control lever 3 using screw 2. ● Loosen nuts 4 (right and left handed thread). ●... -
Page 48: Final Adjustment Of The Control Cam
Adjustment Final adjustment of the control cam .05.08 Requirement When control lever 3 is engaged and the needle point is 12 mm above the needle plate coming from its BDC, the motion of the thread catcher 5 must begin. Fig. 11 - 19 ●... -
Page 49: Catch
Adjustment Catch .05.09 Requirement With the thread trimming mechanism in resting position, there must be a distance of approx. 5 mm between catch 1 and control lever 6. 5 mm Fig. 11 - 20 ● Lightly affix catch 1 and cover plate 2 using screws 3. ●... -
Page 50: Thread-Catcher Height
Adjustment Thread-catcher height .05.10 Requirement When thread catcher 2 2 2 2 2 is pushed forwards manually with the take-up lever at its TDC, the lower point of the thread catcher must pass 1 mm over the back of hook 4. Fig. -
Page 51: Knife
Adjustment Knife .05.11 Requirement 1. The elongated hole of knife 3 must be parallel to knife carrier 5 and the knife must not be touching the casting (see arrow). 2. When the point of needle catcher 4 protrudes approx. 3 mm over the cutting edge of the knife, knife 3 must just touch thread catcher 4. -
Page 52: Thread Catcher Reverse Position
Adjustment Thread catcher reverse position .05.12 Requirement At the front point of reversal of thread catcher 3, its rear edge must be flush with the cutting edge of knife 4 (see arrow). Fig. 11 - 23 ● Taking care to ensure that screw 1 is loosened, bring the machine to needle rise position and activate the engaging lever. -
Page 53: Bobbin-Thread Clamp Spring
Adjustment Bobbin-thread clamp spring .05.13 Requirement 1. Between clamp spring 5 and the bottom of thread catcher 4, there must be a distance of 0.3 mm. 2. At the front point of reversal of thread catcher 4, the points of clamp spring 5 must be flush with the back edge of catcher 4 (see arrow). - Page 54 Adjustment Fig. 11 - 25 ● Align clamp spring 5 (screws 6) in the elongated hole in accordance with requirement 2 and 3 - if necessary carrier 1 (screws 2) as well. ● In this position, and taking care to ensure that carrier 1 is parallel to the machine bedplate, tighten screws 2 and 6.
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Page 55: Adjusting The Synchronizer
Adjustment Adjusting the synchronizer 05.11 Requirement 1. On a seam interruption the machine must position 4 mm past b.d.c. 2. After a thread trim the machine must position at t.d.c. of the take-up lever. ● Carry out adjustment according to motor instruction manual. 11 - 28... - Page 56 PFAFF Industriesysteme und Maschinen AG 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...