Instruction/ maintenance manual of the product 1246 Pfaff
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Instruction manual 296-12-18 401/002 Betriebsanleit ung engl. 0 1 .02 1 245 1 246 This instr uction manual applies to machines from the follo wing serial numbers onwards: PF AFF 1245 # 527 678 PF AFF .
T his Instruction manual is v alid for all models and subclasses listed in the c hapter „Specifications“ . The reprinting, copying or translation of PF AFF Instr uction Manuals, whether in whole or in part, is only permit ted with our previous permission and with writ ten ref erence to the source.
Index Contents ............................................................................... Chapter - Page 1 Safety ............. ............................................................................................................ .1 - 1 1 .
Index Contents ............................................................................... Chapter - Page 8 Mounting and commissioning the machine ........................................................... 8 - 1 8 .01 Mounting ...................
Index Contents ............................................................................... Chapter - Page 11 .0 3 Abbreviations .............................................................................................................. 11 - 1 11 .
S afety 1 Safety 1.01 Directives This machine is constructed in accordance with the European regulations contained in the conformity and manufacturer’s declarations.
S afety 1. 03 Safety symbols Danger! Points to be observed. Danger of injury for operating and specialist personnel! 1 - 2 1. 04 Important points for the user ● This Instruction Manual is a component part of the machine and must be available to the operating personnel at all times.
S afety 1.05 Operating and specialist personnel 1 .05.01 Operating personnel Operating personnel are persons responsible for the equipping, operating and cleaning of the machine as well as taking care of faults arising in the sewing area.
S afety 1 - 4 1. 06 Danger A working area of 1 metre is to be kept free both in front of and behind the machine while it is in operation so that it is always easily accessible.
S afety Do not operate the machine without belt guards 4 and 5 ! Danger of injury by the revolving V-belt! 1 - 5 Fig.1 - 02 Fig. 1 - 03 4 5 3 Do not operate the machine without tilt-back safeguard 3 !.
2 - 1 Proper use 2 Proper use PFAFF 1245 T he PF AFF 1 245 is a single needle, flatbed sewing mac hine with bot tom, top and needle f eeds as well as a large v ertical hook for se wing loc kstitc h seams. The mac hine is designed f or commercial use (industr y).
3 - 1 Specifications 3. 02 Possible models and subclasses Model C: ................................................................... F or processing medium-hea v y materials Additional equipment: Subclass -900/56 ....................................
3 - 2 Specifications 3. 03 Max. number of stitches/min -1 Max. number of stitc hes/min -1 fo r stitc h lengths up to 6 mm T op f eed lif t Max. number of stitc hes/min -1 f or stitc h lengths from 6 mm to 8 mm less than 3.5 mm from 3.5 to 5.5 mm from 5.
3 - 3 Specifications 3. 04 PFAFF 1246 ◆ Stitc h t ype: ........................................................................................................ 30 1 (loc kst itc h) Needle system: .....................................................
3 - 4 Specifications 3. 06 Max. number of stitches/min -1 less than 3.5 mm from 3.5 to 5.5 mm from 5.5 to 7 mm 270 0 250 0 240 0 220 0 1 9 00 1 7 00 Max.
Disposal of the mac hine 4 - 1 4 Disposal of machine waste ● The proper disposal of machine waste is the responsibility of the customer. ● The materials used on the machines are steel, aluminium, brass and various plastics. The electrical equipment consists of plastics and copper.
T ranspor t pac k aging and storage 5 - 1 5 Transport packaging and storage 5 .01 Transport to the customer’s premises Within the Federal Republic of Germany, the machine is delivered without packaging. Machines for export are packaged in a crate or wrapped depending on how they are transported.
Explanation of the symbols 6 - 1 6 Explanation of the symbols In the following section of this Instruction Manual, certain tasks or important pieces of information are accentuated by symbols.
7 - 1 Controls ● T urn the mac hine on and of f b y switc hing the on/of f switc h 1 on and of f . When the mac hine is on, the light in the switc h is also on. The switch in the illustration can be found on machines with Quick motors. When other motors are used, the switch may not look the same.
7 - 2 Controls 7. 04 Key on the machine head ( for mac hines with bac kt a c king mec hanism -91 1/97) Fig. 7 - 03 0 - 1 - 2 + 1 W ith the on/of f switc h on 0 = Machine stop +1 = Sew - 1 = Raise presserfoot - 2 = Trim thread (on machines with thread trimmer) 7.
7 - 3 Controls Fig. 7 - 06 1 ● A djust the stitc h length by turning the knurled nut 1 accordingly . Reverse sewing ● P ress knurled nut 1 upw ards as f ar as possible (position „R“). 7. 06 Feed regulator / reverse sewing R ● T he se wing foot can be lif ted by raising l e v er 1 .
7 - 4 Controls 7. 07 Feed regulator (on mac hines with bac k tac king mec hanism -91 1/97) Y ou can set the length of the re verse stitc h as large as is required, independent of the for w ard stitc h. ● T he for ward stitc h is set with knurled scre w 1 and the re verse stitc h with knurled screw 2 .
8 - 1 Mounting and commissioning the mac hine 8. 01 Mounting The necessary electricit y and compressed air supplies must be available at the mac hine’ s location (see specifications). A stable and horizontal surface as well as suf ficient illumination at the mac hine’ s location.
8 - 2 Mounting and commissioning the mac hine 8. 0 1 .02 A djusting the V -belt tension ● Loosen nuts 1 . ● Tighten the V -belt with belt take-up hanger 2 . ● Tighten nuts 1 . Fig. 8 - 02 shows a Quic k motor . If another motor is used, proceed as described in the motor’ s instr uction manual.
8 - 3 Mounting and commissioning the mac hine Fig. 8 - 04 shows a Quic k motor . If another motor is used, proceed as described in the motor’ s instr uction manual. Fig. 8 - 04 8 7 8 8 .0 1 .04 Mounting the lo w er V -belt guard ● Align belt-guard 7 in suc h a w ay that both the motor pulley and the V -belt run freely .
8 - 4 Mounting and commissioning the mac hine Fig. 8 - 05 8 .0 1 .06 Mounting the spool holder ● Mount the spool holder as shown in Fig. 8 - 05. ● Insert spool holder in the table-top hole and fasten it by means of the included nuts.
8 - 5 Mounting and commissioning the mac hine 8 .02 T able top cutout 8 .02.0 1 PF AFF 1 245 Stand position.
8 - 6 Mounting and commissioning the mac hine 8 .02.02 PF AFF 1 246 Gestell.
8 - 7 Mounting and commissioning the mac hine 8 .03 Commissioning the mac hine ● Bef ore commissioning the mac hine, c hec k the electrical leads and pneumatic hoses for any damage. ● Remo ve pin 1 of the oil reservoir 2 ( Fig. 8 - 06 ). The pin serves only to protect the mac hine from damage during transport and must not be used when sewing.
Preparation 9 - 1 9 Preparation All regulations and instr uctions in this Instruction manual are to be obser ved! Special at tention is to be paid to all Notes on Saf ety! All preparation work is only to be carried out b y appropriately trained personnel.
Preparation 9 - 2 Turn the machine off! Use only system 1 34 - 35 needles! ● L oosen needle ret aining screws 1 . ● Insert needles as far as it will go (the longitudinal needle groo v e of the lef t-hand needle must be pointing to the right and that of the right-hand needle to the lef t).
Preparation 9 - 3 ● Place an empty bobbin 1 onto bobbin shaf t 2 . ● T hread the bobbin in accordance with Fig. 9 - 02 and wind it cloc kwise around bobbin 1 a f ew times. ● S witc h on the bobbin winder while at the same time pressing bobbin winder spindle 2 and lev e r 3 .
Preparation 9 - 4 9. 05 Inserting the bobbin case / Adjusting the bobbin thread tension Turn the machine off! T hreading the bobbin case. ● T hread the bobbin as shown in Fig. 9 - 04. ● When the thread is pulled, the bobbin must rot ate in the direction of the arrow .
Preparation 9 - 5 Fig. 9 - 05 1 9. 06 Threading the needle thread / Adjusting the needle thread tension i n th e PFAFF 1245 T urn the mac hine of f! ● T hread the mac hine as shown in Fig. 9 - 05. T ake note that the needle is threaded from the lef t (see arro w).
Preparation 9 - 6 9. 07 Threading the needle thread / Adjusting the needle thread tension i n th e PFAFF 1246 Masc hine aussc halten! ● T hread the mac hine as sho wn in Fig. 9 - 06 . Care must be taken that the lef t-hand needle is threaded from the right and the right-hand needle is threaded from the lef t.
Care and maintenance 10 - 1 Turn the machine off! ● Clean the hook compartment daily with a brush, more of ten if in continuous operation. ● T horoughly clean the hook once a week. ● Open the bed slide. ● Bring the needle bar to its highest position.
Care and maintenance 10 - 2 Fig. 10 - 03 Only use oil with a mean viscosity of 22.0 mm 2 /s at 40°C and a densit y of 0.865 g/cm 3 at 1 5°C. W e recommend PF AFF sewing mac hine oil.
Care and maintenance 10 - 3 T urn the mac hine of f! ● Lubricate all bearings marked in Fig. 10.02 t wice a w eek. ● Open the bed slide to gain access to oiling point 1 . ● P ull the knee lever out to the front and la y the mac hine on its bac k .
Care and maintenance 10 - 4 10. 05 Lubricating the head Turn the machine off! ● Unscrew the f ace plate. ● Lubricate all bearings and moving parts mark e d in Fig. 10 - 05 t wice a w eek. ● Screw the face plate bac k on. Only use oil with a mean viscosity of 22.
Care and maintenance 10 - 5 Turn the machine off! Remove the compressed-air hose from the air filter. Emptying the water trap ● W ater trap 1 empties itself automatically when the compressed-air hose is remov ed from the air filter . Cleaning the filter ● Unscrew water trap 1 and filter 2 .
Adjustment 11 - 1 1 1 Adjustment T he illustrations in this section show the PFAFF 1245 single-needle mac hine. F or the PFAFF 1246 t w o-needle mac hine, v arious adjustments must be made t wice, i.
Adjustment 11 - 2 11. 04 Adjusting the basic machine 11. 04.0 1 P ositioning the f eed dog across the direction of se wing Requirement T he bot tom f eed dog must be the same distance from the left and right side of the needle- plate cutout. ● L oosen screws 1 and 2 .
Adjustment 11 - 3 11. 04.02 P ositioning the f eed dog in the direction of sewing Requirement W ith the longest stitc h set, the bot tom f eed dog must hav e the same clearance the front and the bac k with respect to the needle-plate cutout when f eeding both for w ards and bac kwards.
Adjustment 11 - 4 1 1 . 04.03 Height of the bot tom f eed-dog Requirement W ith the stitc h length set at „0“ , the bot tom f eed dog must protr ude ov er the needle plate as high as the teeth when at TDC. Fig. 11 - 03 ● Set stitc h length „0“ .
Adjustment 11 - 5 11. 04.04 Pre-adjusting the needle height Requirement With the needle bar at BDC, the dist ance between the needle bar and the needle plate must be 15 mm. ● Mo ve needle bar 1 (screw 2 ) in accordance with the requirement without mo ving it laterally .
Adjustment 11 - 6 11 . 04.05 Centering the needle in the needle hole Requirement W ith the stitc h length set at „0“ , the needle must enter the needle hole exactly in the middle. Fig. 11 - 05 4 7 8 6 1 2 5 9 3 ● Unscre w vibrating presser 1 and presser foot 2 .
Adjustment 11 - 7 11. 04.06 Lif ting motion of the bot tom feed-dog T his adjustment does not apply for mac hines without a bot tom feed lif ting phase (without P). Requirement 1 . W ith the needle bar at its BDC, the bot tom f eed dog must be at its TDC.
Adjustment 11 - 8 11 . 04.07 Driving motion of the bot tom and top feeds Requirement W ith the longest stitc h length set and the needle bar at its BDC, the top and bot tom f eeds should not mov e when the rev erse-f eed le ver is activated. ● Set the longest stitc h.
Adjustment 11 - 9 11 . 04.08 Hook-to-needle clearance, needle rise, needle height and needle guard (On Model 1 246 make these adjustments on both se wing hooks.) Requirement W ith the stitc h length set at „3“ and the needle rise at (1.8 mm after BDC of the needle bar on model „B“ and 2.
Adjustment 11 - 10 2 1 4 5 1 6 Fig. 11 - 08 5 7 3 adjustable clamp is touching the needle bar bearing. ● P osition the hook point at the middle of the needle, taking care to ensure that the needle is not pressed by needle guard 7 .
Adjustment 11 - 11 11. 04.9 T op-f eed strok e Requirement At the largest top-f eed stroke set ting and stitc h length „0“ , presser f oot 1 and vibrating presser f oot 2 must lif t 7.0 mm from the needle plate when the handwheel is t urned. Fig. 11 - 9 ● Set the largest top-f eed stroke and the stitc h length at „0“ .
Adjustment 11 - 12 11 . 04.1 0 Lif ting motion of the top f eed Requirement When presser foot 1 is resting on the needle plate, the vibrating presser f oot 4 and the point of the needle must both reac h the needle plate at the same time when the top f eed strok e is set at maximum.
Adjustment 11 - 13 11 . 04.1 1 B obbin-case opener (On Model 1 246 make these adjustments on both bobbin openers.) Requirement T he needle thread must not be clamped bet w een the bobbin-case opener 1 and the bob- bin-case base 3 nor ma y it be clamped bet ween projection 4 and the ret aining trip of the needle plate (see arrows).
Adjustment 11 - 14 11. 04.1 2 Saf ety clutc h ● Remo ve the jammed thread. ● Press piston 1 and t urn the handwheel until hook 3 of pawl 2 clic ks into groov e 4 . Fig. 11 - 12 T he saf ety clutc h is set by the manuf acturer and scre ws 5 are sealed.
Adjustment 11 - 15 11. 04.1 3 Needle thread tension release Requirement With the presser foot raised, both of the tension discs must be at least 0.5 mm apart. T he clearance of 0.5 mm is a minimum and can increase to more than 1 mm when using thic k threads.
Adjustment 11 - 16 11. 04.1 4 T hread c hec k spring Requirement T he mo v ement of thread c hec k spring 2 must be finished when the needle point enters the material (appro x. 7 mm spring path). Due to tec hnical reasons, the length of the thread-c hec k spring path can var y a lit tle in either direction.
Adjustment 11 - 17 11 . 04.1 5 T hread c hec k spring on PF AFF 1 246 with thread trimmer -90 0/56 Requirement T he motion of thread controller springs 1 and 6 should cease as soon as the needle point penetrates the material (= about 7 mm spring deflection).
Adjustment 11 - 18 11 . 04.1 6 Bobbin winder Requirement 1 . With the bobbin winder switc hed on, the bobbin winder spindle must engage reliably . With the bobbin winder switc hed of f , friction wheel 5 must not touc h driv e wheel 1 .
Adjustment 11 - 19 11 . 04.1 7 P resser -foot pressure Requirement T he material must be f ed reliably ev en at top se wing-speed. T here mustn ’ t be pressure marks on the material.
Adjustment 11 - 20 11. 05 Adjusting the thread trimmer -900/56 11 . 05.0 1 P re-adjusting the control cam Requirement 1 . T he eccentric bearing-surf ace of control cam 5 must be laterally in the middle of pa wl 8.
Adjustment 11 - 21 11. 05.02 T ripping le ver Requirement In needle rise position, the flat tened pin of control lev er 6 (see arro w) must f all slightly into the trac k of control cam 7 when activating le ver 8 is activ ated. Fig. 11 - 18 ● Screw out scre w 1 and swing out connecting rod 2 .
Adjustment 11 - 22 11. 05.03 Pa w l Requirement W ith the cut-of f mec hanism in resting position, there must be a distance of 0.3 mm between the largest eccentricit y of bearing surf ace 1 and pa wl 2 . ● P osition the largest eccentricity of bearing surface 1 underneath pawl 2 by turning the handwheel.
Adjustment 11 - 23 11. 05.04 Engaging solenoid Requirement In needle rise position and with engaging solenoid 5 activ ated, there must be a dist ance of 0.3 mm bet w een engaging lev er 2 and pawl 3 . Fig. 11 - 20 2 3 0.3 mm ● Bring the mac hine to needle rise position by t urning the handwheel.
Adjustment 11 - 24 11. 05.05 Release trip Requirement In needle rise position and with control le ver 4 engaged, there must be a dist ance of approx. 0.3 mm bet w een the bolt of the control lev er and the base of the cam trac k. Fig. 11 - 21 ● Bring the mac hine to needle rise position by turning the handwheel.
Adjustment 11 - 25 11. 05.06 Engaging lev er Requirement W ith the needle bar at TDC and with control le ver 3 at st arting position, there must be a distance of approx. 0.3 mm bet w een bolt 4 and the outer diameter of control cam 5 . Fig. 11 - 22 ● Bring the needle bar to TDC by t urning the handwheel.
Adjustment 11 - 26 11 . 05.07 Linkage rod Requirement When shaf t 9 begins its sliding motion, le v er 6 must simultaneously lif t from stop 7 . Fig. 11 - 23 ● Af fix spherical head 1 to control le v er 3 using scre w 2 . ● L oosen nuts 4 (right and lef t handed thread).
Adjustment 11 - 27 11. 05.08 Final adjustment of the control cam Requirement When control lev e r 3 is engaged and the needle point is 12 mm above the needle plate coming from its BDC, the motion of the thread catc her 5 must begin.
Adjustment 11 - 28 11. 05.09 Catc h Requirement W ith the cut-of f mec hanism in resting position, there must be a distance of approx. 5 mm bet ween catc h 1 and control le v er 6 . 1 4 5 6 2 3 1 6 5 mm ● Lightly af fix catc h 1 and co ver plate 2 using scre ws 3 .
Adjustment 11 - 29 11 . 05.1 0 Connecting rod (f or PF AFF 1 246 only) ● L oosen nuts 1 (right- and lef t-hand thread) when the cut ting de vice is in the of f-position. ● Measure the dist ance between shaf ts 2 and 3 . ● Rotate connecting rod 4 according to the requirement.
Adjustment 11 - 30 11 . 05.1 1 Thread-catc her height (On Model 1 246 mak e these adjustments on both thread catc hers.) Requirement When thread catc her 2 is pushed f or wards manually with the take-up lev er at its TDC, the lo wer point of the thread catc her must pass 1 mm o ver the bac k of hook 4 .
Adjustment 11 - 31 11 . 05.1 2 Knif e (On Model 1 246 mak e these adjustments on both kniv es.) Requirement 1 . T he elongated hole of knif e 3 must be parallel to knif e carrier 5 and the knif e must not be touc hing the casting (see arro w). 2. When the point of needle catc her 4 protr udes approx.
Adjustment 11 - 32 11 . 05.1 3 Thread catc her re verse position (On Model 1 246 mak e these adjustments on both thread catc hers.) Requirement At the front point of re v ersal of thread catc her 3 , its rear edge must be flush with the cut ting edge of knif e 4 (see ar row).
Adjustment 11 - 33 ● In this position and taking care to ensure that there is no horizontal play , tighten scre w 1 ..
Adjustment 11 - 34 11 . 05.1 4 B obbin-thread clamp spring (On Model 1 246 mak e these adjustments on both clamp springs.) Requirement 1 . B et w een clamp spring 5 and the bot tom of thread catc her 4 , there must be a distance of 0.
Adjustment 11 - 35 3 Fig. 11 - 29 A 5 12 mm 7 ● Bring the mac hine to needle rise position, activate the engaging le ver and bring the thread catc her to its front point of rev ersal b y turning the handwheel.
Adjustment 11 - 36 11 . 05.1 5 T ension release bar Requirement 1 . W ith the cut-of f mec hanism in resting position and the presser f oot raised, there must be a distance of appro x.
Adjustment 11 - 37 ● Allow the presser f oot to rest on the needle plate. ● By continuing to t urn the handwheel, position the point of thread catc her 5 at the same height as the edge of rear stop trip 6 of the needle plate and press release bar 8 to the lef t in accordance with requirement 2 using retaining collar 7 .
Adjustment 11 - 38 11 . 05.1 6 P ositioner Requirement When interr upting the sewing process, the mac hine must position itself at approx . 4 mm after the BDC of the needle bar. Af ter trimming the thread, the mac hine must position itself at the TDC of the take-up lever.
W earing par ts 12 - 1 91 -1 40 538-91(V ersion B) 91 -1 40 539-91(V ersion C) PF AFF 1245; 1246 12 Wearing parts This list indicates the most important wearing parts. You can request a detailed parts list for the complete machine under parts number 296-12-18 085.
W earing par ts 12 - 2 1 1 -1 08 006-1 5 (2x) 1 1 -1 30 089-1 5 (2x) 1 1 -1 30 089-1 5 (2x) 91 -0 1 8 1 47-05 91 -0 1 8 885-1 5 91 -1 1 3 480-91 91 -1 40 180-91 99-1 37 1 51 -45 91 -1 71 049-05 91 -1 .
Notes.
PFAFF Industrie Maschinen GmbH Postfach 3020 D-67653 Kaiserslautern Königstr. 154 D-67655 Kaiserslautern Telefon: (0631) 200-0 Telefax: (0631) 17202 E-Mail: info@pfaff-industrial.com Gedruckt in der BRD Printed in Germany Imprimé en R.F.A. Impreso en la R.
An important point after buying a device Pfaff 1246 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Pfaff 1246 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Pfaff 1246 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Pfaff 1246 you will learn all the available features of the product, as well as information on its operation. The information that you get Pfaff 1246 will certainly help you make a decision on the purchase.
If you already are a holder of Pfaff 1246, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Pfaff 1246.
However, one of the most important roles played by the user manual is to help in solving problems with Pfaff 1246. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Pfaff 1246 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
