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Pfaff 918 Sewing Machine User Manual

1. Signal Description E001 Pedal not in neutral position E009 Start inhibitor during standstill E010 Incorrect machine class E062 Short circuit 24V E063 Overload mains supply circuit E064 Network monitoring E065 Extint low in operation E066 Short circuit E067 Network off E068 Extint low in operation E069 No increments E070 Motor blocking E071 No incremental connector E074 External transmitter for synchronisation marker missing E088 RAM defective E092 Start inhibitor when motor running E173 Start error E175 Start error 12 47 Adjustment WA nternet update of the machine software The machine software can be updated with PFAFF flash programming For this purpose the PFP boot program and the appropriate control software for the machine type must be installed on a PC To transfer the data to the machine the PC and the machine control unit must be connected with an appropriate null modem cable part no 91 291 998 91 A The PFP boot program and the control software of the machine type can be 1 downloaded from the PFAFF homepage using the following path Www pfafi industrial com dejservice download steuerungssoftware htmi To update the machine software carry out the following steps While the machine software is being updated no setting up maintenance or adjustment work may be carried out on the machine Switch off the machine Connect the PC serial
2. 91 268 675 91 AJB 11 174 912 15 2x 91 268 678 05 91 168 627 45 A B 11 210 009 15 Bx 91 168 468 05 v 91168 628 91 i 91 009 SRE ier 91 000 250 15 S 91 002 134 05 91 000 390 15 13 1 Wearing parts PFAFF 938 91 265 225 91 91 265 227 05 3x ei Ni SY 7 11 174 912 15 2x q 8 WS D By S B 91 175 690 05 DA 91 225 227 05 3x ei DD K LY P 91 009 026 05 ze 91000 250 15 91 167 597 91 91 000 390 05 99 137 151 45 Be fs Yap o KA de 91 171 049 05 Je AS SE je No 91 171 042 05 91 168 498 15 91 168 499 05 g 11 180 094 15 91 168 144 05 13 2 Circuit diagrams 14 Circuit diagrams Reference list for circuit diagrams AL A2 A14 H1 H10 M1 Q1 S1 S41 S42 S43 S46 x0 XI X2 X3 X4 X5 X6 X7 X22 X24 X25 X28 X40 X46 X50 Y2 Y4 Y5 Y8 Controller Ouick P40 ED Control panel S1 Sewing head identification Sewing lamp LED Stitch counter Sewing motor Main switch Pedal set value transmitter Manual backtacking Needle position change key Single stitch key Start inhibitor key RS232 interface PC Motor Incremental transmitter Set value transmitter Control panel S1 Inputs outputs Bobbin thread optional Light barrier optional 900
3. Fig 12 25 Sctthe zigzag stitch adjustment lever at 0 and the stitch position adjustment lever at centre LE Letthe presser foot drop onto the needle plate and reduce the pressure on the presser bar by turning screws 1 Place the feed dog adjustment gauge under the presser foot with the recess at the bottom Loosen screw 2 and raise hand lever 3 Allow the needle to penetrate the needle hole and align the presser foot in accordance with the requirement Press the presser bar lifting piece down and tighten screw 2 12 26 Adjustment 12 05 25 Needle thread tension release on machines without 900 24 Requirement When the hand lever is raised the tensions disks should be at least 0 5 mm apart Fig 12 26 Loosen screw 1 and press linkage rod 2 down as far as possible Raise the presser foot Adjust trip 3 screw 4 in accordance with the requirement 12 21 Adjustment 12 05 26 Presser foot pressure Reguirement Even at top sewing speed the material should be fed without problems There should be no pressure marks on the material Fig 12 27 LE Tum screw 1 in accordance with the requirement o The presser foot pressure Screw 1 can be increased or reduced as I require
4. aannannann 11 1 GIGANING EE 11 1 Lubricating the hook aae a ar nana 11 2 Oiling the zigzag drive a aannnnn 11 3 Cleaning the air filter of the air filter lubricator a 11 4 Checking adjusting the air pressure annnna 11 4 Adjustments ts an EE 12 1 Notes ee UE 12 1 Tools gauges and other accessories for adjusting 12 1 ee e EE 12 1 Check and adjustment ad 12 2 Adjusting the basic machine ccccecceeeeee tees eeeeeeeneeeseeeetcaeeeeaeeseeeeeeeeseaeesaaeeseeeseaeeeaes 12 3 Balancing Weight EE 12 3 Centering the needle in the needle hole in Sewing direction 12 4 Parallel guiding of the needle ber 12 5 LOCKING RE 12 6 Zero stitch and zigzag Stitch scale ssseesseesesskeeskreisernsrrntnntinntnnntnnstnnnnnntnnnnn nnen nn nn 12 7 Centering the needle in the needle hole crosswise to sewing direction 12 8 Zigzag SUCH Width NEE 12 9 Zigzag stitch movement esssssssssessesssnrsesssnssrntttnettnttnnennntnnntanetnsennntnntaneenaennntnnetnnet 12 10 Needle penetration symmetry left centre and right 12 11 Contents 12 05 10 12 05 11 12 05 12 12 05 13 12 05 14 12 05 15 12 05 16 12 05 17 12 05 18 12 05 19 12 05 20 12 05 21 12 05 22 12 05 23 12 05 24
5. 77 005 Fig 7 01 102 Keys on the machine head only on machines with Quick flange motor As long as key 1 is pressed during sewing the machine sews in reverse Keys 2 and 3 can be allocated with corresponding parameter settings see the Motor nstruction Manual Fig 7 02 Controls 1 03 Pedal Neutral position Sewing Raise presser foot D N e O Il Trim thread Fig 7 03 104 Lever for raising presser foot The presser foot is raised by turning lever1 Fig 7 04 Controls 105 Adjustment lever for zigzag stitch and needle position Fig 7 05 7 06 Reverse feed key Fig 7 06 The zigzag stitch adjustment lever 1 is used for adjusting the width of the zigzag stitch Tochange the position of the adjustment lever the locking lever2 must be pressed against the adjustment lever 1 The current zigzag stitch width can be seen on scale 3 By tuming the needle position adjustment lever 4 the required needle position can be set L needle position left M needle position center R needle position right The machine sews in reverse as long as the reverse feed key 1 is pressed Controls 101 Stitch length adjustment wheel The stitch le
6. 11 02 LP Lubricating the hook Fig 11 03 Turn the machine off Danger of injury if the machine is started accidentally Only use oil with a mean viscosity of 10 0 mm s at 40 C and a density of 0 847 g cm at 15 C Lay the machine head on its back Fill the oil reservoir up to the upper marking 3 through hole 2 Before operating the machine for the first time or after longer stationary periods add a few additional drops of oil into the hook race see arrow inFig 11 03 Retum the machine to its upright position with both hands Danger of crushing between machine head and table top JE We recommend PFAFF sewing machine oil if Part no 280 1 120 105 gt KM GG 11 2 Care and maintenance 11 03 Oiling the zigzag drive LP Fig 11 05 Switch off the machine Danger of injury if the machine is started accidentally Only use oil with a mean viscosity of 68 00 m s at 40 C and a density of 0 881 g cm at 15 C Check the oil level before each operation if necessary remove screw 1 and fill in oil up to top marking 2 Tighten screw 1 Never allow the oil level to sink below the minimum mark 3 Danger of damage to the machine To fill in larger quantities of oil e g when filling for the first tim
7. 12 05 20 Final adjustment of the needle height Requirement With the zigzag stitch set at 0 the needle position set at left and the hook point in the middle of the needle the top edge of the needle eye must be 0 5 mm undemeath the hook point U mim Fig 12 21 FE Without tuming it adjust the needle bar Screws 1 in accordance with the requirement 12 22 Adjustment 12 05 21 Bobbin case opener position Reguirement 1 There must be a clearance of 0 5 mm between the top edge of the bobbin case opener and the inner edge of the bottom section of the bobbin case 2 Between the bobbin case opener finger and the bottom section of the bobbin case opener there must be a clearance of 0 8 mm 3 Atthe left point of reversal of the bobbin case opener the bobbin case positioning finger must be approx 0 3 mm from the right side of the groove in the bottom section of the bobbin case Fig 12 22 Loosen screw 2 LE Place bobbin opener 1 on the right side of the bobbin case base press it against clamp crank 3 located underneath this and slightly tighten screw 2 Adjust eccentric bearing bush 4 Screw 5 in accordance with requirements 1 and 2 Adjust bobbin opener 1 in accordance with requirement 3 and ti
8. Check and adjustment aid il By blocking with holes 1 5 the required needle bar positions can be fixed exactly ID J Fig 12 01 Turn the balance wheel until the needle bar has approximately reached the required position Place the 5 mm blocking pin in the appropriate hole and put pressure on it Tum the balance wheel forwards and backwards a little until the blocking pin moves into the slot in the crank behind the bearing plate thus blocking the machine Holel 2 0 mm after the bottom dead center of the needle bar 2 0 past tdc Hole2 Top dead center of the needle bar tdc Hole3 0 25 mm after the top dead center of the needle bar 0 25 past bdc Hole4 1 0 mm after the top dead center of the needle bar 1 0 mm past tdc Hole5 4 mm after the bottom dead center of the needle bar 4 0 past bdc 12 2 Adjustment 12 05 12 05 01 LE Adjusting the basic machine Balancing weight Requirement With the needle bar at bdc the largest eccentricity of the balancing weight 1 must be pointing upwards 81 060 NLAY Fig 12 02 Bring the needle bar to b d c Adjust the balance weight 1 screw 2 in accordance with the requirement 12 3 Adjustment 12 05 02 et Centering the needle i
9. 2 Proper use The PFAFF 918 U is a high speed zigzag sewing machine with bottom feed and large hook The PFAFF 938 U is a high speed zigzag sewing machine with bottom feed The machines are used for producing zigzag lockstitch seams in the clothing and linen industry Any use of these machines which is not approved by the manufacturer shall be considered as improper use The manufacturer shall not be liable for any dam N age arising out of improper use Proper use shall also be considered to include compliance with the operation adjustment service and repair measures speci fied by the manufacturer Specifications Specifications 4 Stitch type isis AA AA a ino tae 304 zigzag lockstitch WIES EE ani aaea aiaa 438 Needle size in 1 100 mm Olai EE 60 70 Oe THEN 80 100 Effective balance wheel diameter ea 65 mm Presser foot clearancme ees ee NE S ANS EE 7 mm Clearance Width ita sni ii ei ii ie S ee eves 260 mm Clearance Neigh o risi rine aa a A A a A 130 mm Bedplate dimensions annnnn 476 x 177 mm Sewing head dimensions Rue EE ca 550 mm ke EEA A AE AE OE NOE NEP RE NE ca 180 mm Height above table ca 300 mm Max stitch length ND EE 4 5 mm PFAFF 9386 015 6 27 Sepeni petak enipe Eed ae de ea 2 5 mm Max speed DEE EELER ee Ee 5000 Sti min PFAFF 938 6 01 77048 5500 Sti min PFAFF938 34 01 Ri eege ee 6000 Sti min Max stitch with PRFAFEJIBIC ni neje ke
10. thread trimmer 910 automatic presser foot lift 911 backtacking device Thread tension release Keyboard Start inhibitor Sewing head identification 900 thread trimmer 910 automatic presser foot lift 911 backtacking device Thread tension release 14 1 91 191 469 95 pati Version 10 03 04 it diagrams CIFCUI General plan 9 4 4 l LS pPlajUdIpag Jagabjjam 0S JOJOWUPN lepad cv Le LW Jagabyjeyuawasyuy JOJOW Go O00 o m mna E pL o ES zara f Go 88888888 z le Je 9990090 fi at fei ei mbadn ee CEET ACID kel kel kel LJEJ S 9 2 f7 2 d neysa6ussij MINS5Md Nadya ee AS Q 8IL IST Lele EK 2 bye ge LNCS CNN NTN A TA A i i i I IZUVEUELLELI LETETT LLJ kk zx JE Cl 16 18 IL 19 IS t Ie IZIL le lu le le Iz Is Iz Io EX dE V fy JE z ony oibJaDt Tv NS 1019 JAJO NS 8 i JE GE gns a JaBnod 6 qns q Jabijod 6 d4 07d aa MU Lu 4esaBsanats ans g sabijod 6 OOO U014d0 LH A r H KEEN Z dd J t Lb ZH 09 05 ADEL Z49N 3442N 142N Jd NILI 14 2 91 191 469 95 part
11. 12 05 25 12 05 26 12 05 27 12 05 28 12 05 29 12 05 30 12 06 12 06 01 12 06 02 12 06 03 12 06 04 12 06 05 12 07 12 07 01 12 07 02 12 07 03 12 07 04 12 07 05 12 08 12 08 01 12 08 02 12 08 03 12 09 12 10 12 11 13 14 CODES ne Ee EN AM Na a O obi Chapter Page Needle position adjustment ever 12 12 Zero position of the bottom feed dog with closed gear box 12 13 Zeroing the bottom feed with open gearbox s ssssssssrsssrsssrssrrsirnsissinssrnstnnnnnnnnnses 12 14 Feeding motion of the bottom feed dog nn 12 15 Lifting motion of the bottom feed dog A 12 16 Drive belt in the gearbox bouslmg nn 12 17 Hook bearing bracket aaa 12 18 Hook ale e e NEE 12 19 Pre adjusting the needle height 12 20 Needle rise hook to needle clearance and bobbin case positioning finger 12 21 Final adjustment of the needle height 12 22 Bobbin case opener position sssessessieessesrssrrsisstnesinsttnetintnnsnnsnnnnnnnnnnnnnnnnnnnn nennen 12 23 Bobbin case opener MOTION 20 cece ecetee cece cece eeeaeeseeeeecaeeeeaeeseeeeeeaeeseaaeeeeeeseaeeeeaeeenaeeteas 12 24 Bottom feed dog height 12 25 Presser foot to needle plate clearance nn 12 26 Needle thread tension release on machines without 900 24 12 27 Presser foot Keel EE 12 28 Thread diverter EE 12 29 Limiting the knee lev
12. E 3 k k d k k d k Lie d k d k LI h k l k Lille Z ee SE EES ce Z ce Z f ans q Jabijod e uJajsaM JaBijod g uJajsaM Jabijod 9 d3 07d MIND Ly JeJabJana s 14 4 Europdische Union Wachstum durch Innovation EFRE PFAFF 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 Hotlines Technical service 49 175 2243 101 Application consultance 49 175 2243 102 Spare parts hotline 49 175 2243 103 Printed in Germany PFAFF Industriesysteme und Maschinen AG 2009 PFAFF is the exclusive trademark of VSM Group AB PFAFF Industriesysteme und Maschinen AG is an authorized licensee of the PFAFF trademark
13. respective function key Inthe sewing mode all relevant sewing data is displayed and can be changed directly depending on the status of the machine see also Chapter 10 Sewing During the parameter input the selected parameter number with the corresponding value is displayed see Chapter 12 08 02 Example of a parameter input Function keys The function keys described below are used basically to switch machine functions on and off Each time a key is pressed this must be confirmed by at least one beep tone Irrespective of the machine mode a double beep signal is given if invalid keys are pressed or maximum values reached If a corresponding value has to be set for the activated function this is carried out with the corresponding A key By pressing and holding the corresponding H key the relevant numerical value 4 is changed slowly to begin with If the corresponding AL key is held down longer the values change more quickly Controls O a Pe S00 gt Start backtacks If this key is pressed the backtacks at the beginning of the seam start backtacks are switched on or off The number of forward stitches A or reverse stitches B for the start backtacks can be changed by pressing the AL key underneath To convert from double backtack to single backtack set the number of stitches for the corresponding seam section at zero End backtacks If this key is pressed the backtacks at the
14. Installation and commissioning 8 08 Mounting connecting the start inhibitor only on machines with Quick flange motor 92 013 Fig 8 09 For machines delivered without a table the plate 1 from the accessories should be mounted under the table top so that the switch lug 2 is resting on plate 1 when the sewing head is in an upright position Loosen screws 3 and adjust switch 4 so that the switch lug 2 is free when the sewing head is tilted back and pressed when the sewing head is upright Connect plugs 5 and6 to the switch 4 Function check of the start inhibitor Neo T ERROR ba en en eba e PP eter t lil ila Il PFAFF es ke BY itis abies pati 0 Switch the machine on at the main switch and tilt it back The error message E9 must appear on the control panel if the message does not appear check the setting of switch 4 Set the sewing head upright and acknowledge the error message by pressing the TE Speed key The machine is ready for operation again Setting up 901 Setting up A A All instructions and regulations in this instruction manual must be observed Special attention must be given to all safety regulations All setting up work must only be done by personnel with the necessary training For all setting up work the machine must be isolated from its power supply by turning off the on off switch or re
15. The only exception to this is when adjustments or function checks are carried out by appropriately trained technical staff Work on the electrical equipment must only be carried out by technical staff who are qualified to do so Work on parts or equipment connected to the power supply is not permitted The only exceptions to this are specified in regulations EN 50110 Conversion or modification of the machine must only be carried out under observation of all relevant safety regulations Safety 1 03 1 04 Only spare parts which have been approved by us are to be used for repairs We draw special attention to the fact that spare parts and accessories not supplied by us have not been subjected to testing nor approval by us Fitting and or use of any such parts may cause negative changes to the design characteristics of the machine We shall not ac cept any liability for damage caused by the use of non original parts Safety symbols Danger Special points to observe Danger of injury to operating or technical staff Caution Do not operate without finger guard and safety devices Before threading changing bobbin and needle cleaning etc switch off main switch Important notes for the user This instruction manual belongs to the equipment of the machine and must be available to the operating staff at all times This instruction manual must be read before the machine is operated for the first
16. ei ki Evi ii a ii MV ed e AEN 10 0 mm NEE KEE 6 0 mm PFAFF 938 771 04 6 27 si leni aa dia lila Mili dali 3 0 mm PFAFF O38 34 0U RE in ai ni deed 4 5 mm Connection data Operating voltage esssseseeseeesnesnesenennsrnrttnetinsrnntnnntenrsnnnnnennntnnnt 230 V 10 50 60 Hz MAX e UE 1 2 KVA FUSE protection EE 1x16 A inert Noise data Noise emission level at workplace with a sewing speed of 4000 spm La lt 80 dB A Noise measurement in accordance with DIN 45 635 48 A 1 ISO 11204 ISO 3744 ISO 4871 Net weight of sewing head nnanna ca 46 kg Gross weight of sewing head 0 0 2 eeeeeeeeeeeeeeeeeeeeeeee tees eeeaeeeeaeetaeeeeeeeseaeeeeeeeeeeee ca 54 kg 4 Subject to alterations Depending on the stitch length the maximum speed is reduced automatically within the max pre set value m K lt 25dB pa Disposal of Machine A Disposal of Machine Proper disposal of the machine is the responsibility of the customer The materials used for the machine are steel aluminium brass and various plastic mat erials The electrical equipment comprises plastic materials and copper The machine is to be disposed of according to the locally valid pollution control regula tions if necessary a specialist ist to be commissioned Care must be taken that parts soiled with lubricants are disposed of separately according to the locally valid pollution control regulations Transp
17. end of the seam end backtacks are switched on or off The number of reverse stitches C or forward stitches D can be changed by pressing the H key underneath To convert from double backtack to single backtack set the number of stitches for the corresponding seam section at zero Needle position If this key is pressed the needle raised after sewing stop function is switched on or off When the function is switched on the needle positions at t d c after sewing stops Foot position after stop If this key is pressed the foot raised after sewing stop function is switched on or off When the function is switched on the presser foot is raised after sewing stops Foot position after trimming If this key is pressed the foot raised after thread trimming function is switched on or off When the function is switched on the presser foot is raised after thread trimming Thread trimmer If this key is pressed the thread trimming function is switched on or off Darning program If this key is pressed the damring program function is switched on or off The counted seam function is switched off automatically Counted seam if this key is pressed the counted seam function is switched on or off The daming program function is switched off automatically TE Speed If this key is pressed once the speed limit for the sewing mode is activated If this key is pressed twice within 5 seconds the machine changes from sewing to input
18. mode Installation and commissioning 8 installation and commissioning The machine must only be installed and commissioned by gualified 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 top that can hold the weight of the machine with its motor It is very important to ensure that the stand of the machine is firm and steady also during sewing 8 01 nstallation The site where the machine is installed must be provided with suitable connections for elec tric current It must be ensured that the standing surface of the machine site is firm and horizontal and that sufficient lighting is provided for o For packing and transportation reasons the table top is in the lowered position The table height is adjusted as described below 8 01 01 Adjusting the table height ee eee Fig 8 01 Loosen screws 1 and2 and set the table height as required Firmly tighten screw 1 Set the required pedal position and tighten screw 2 Installation and commissioning 8 01 02 8 01 03 Mounting the upper V belt guard Fitting the machine cover Fig 8 02 Fitting the reel stand Fig 8 03 Slide the left and right halves of
19. of the right edge of the bobbin case position finger 4 the thread catcher should begin moving forwards 2 The control cam 1 should be touching adjustment ring 6 Fig 12 40 LE Bring the needle bar to b d c Tum control cam 1 screws 2 in accordance with requirement 1 and shift it in accordance with requirement 2 12 Al Adjustment 12 07 05 Needle thread tension release Reguirement 1 When solenoids 3 are activated the tensions disks 4 should be at least 0 5 mm apart 2 When the thread trimmer is in its neutral position and the sewing foot is positioned on the needle plate the tension should be fully effective Fig 12 41 92 013 Unscrew the thread wiper Tum nut 1 nut2 in accordance with the requirements Screw thread wiper back into place 12 42 Adjustment V2 08 Parameter settings 12 08 01 Selecting the user level Switch on the machine By pressing the corresponding H key select the desired user level O operator level A 1 technician level B 11 service level C The selected user level is displayed on the screen See arrow 12 43 Adjustment 12 08 02 Example of a parameter input Switch
20. statutory and other legal requirements including those of the user s country and the applicable pol lution control regulations The valid regulations of the regional social insurance society for occupational accidents or other supervisory authorities are to be strictly adhered to General notes on safety The machine must only be operated by adequately trained operators and only when the instruction manual has been fully read and understood All notices on safety and the instruction manual of the motor manufacturer are to be read before the machine is put into operation All notes on the machine conceming danger and safety must be observed The machine must be used for the purpose for which it is intended and must not be operated without its safety devices all regulations relevant to safety must be adhered to When part sets are changed e g needle presser foot needle plate feed dog or bob bin during threading when the workplace is left unattended and during maintenance work the machine must be isolated from the power supply by tuming off the on off switch or removing the plug from the mains Daily maintenance work must only be carried out by appropriately trained persons Repairs and special maintenance work must only be carried out by qualified technical staff or persons with appropriate training During maintenance or repairs on the pneumatic system the machine must be isolated from the compressed air supply
21. the V belt guard into place with the slots behind the heads of screws 1 and2 Screw screw 3 with distance bush 4 into threaded hole5 Align the V belt guard taking care that clip is behind slot7 and in front of distance bush 4 Tighten screws 1 and 2 through holes 8 and 9 and screw 3 When using an extemal motor the motor cover must also be fitted as described by the motor manufacturer Fit the reel stand as shown in Fig 8 03 Afterwards insert the stand in the hole in the table top and secure it with the nuts provided Installation and commissioning 8 02 Fitting the Quick flange motor Fig 8 04 Loosen screws 1 and remove toothed belt wheel 2 from the motor shaft 3 Attach bearing plate 4 to the motor5 with screws 6 as shown in Fig 8 04 Slide toothed belt wheel 2 onto the motor shaft 3 and fasten with screws 1 Slightly tilt bearing plate 4 with motor5 to the side and place the toothed belt 7 on the toothed belt wheels Align bearing plate 4 of motor5 on the machine case and attach it with screws 8 8 03 Fit the belt guard of the Quick flange motor Attach belt guard 1 with screws 2 and3 Installation and commissioning 8 04 Connect the plug type connections and earth cable of the Quick flange motor Fig 8 06 Connect all the plugs 1 5 to the control box as label
22. time Both operating and technical staff must be instructed on the safety devices of the mach ine and on safe working methods Itis the duty of the user to operate the machine in perfect running order only The user must ensure that none of the safety devices are removed nor put out of work ing order The user must ensure that only authorized persons operate and work on the machine For further information please refer to your PFAFF agency Safety 1 05 1 05 01 1 05 02 Notes for operating and technical staff Operating staff Operating staff are the persons responsible for setting up operating and cleaning the machine and for eliminating any malfunctioning in the sewing area The operating staff is obliged to observe the following points The notes on safety in this instruction manual must always be observed Any working methods which adversely affect the safety of the machine must be avoided Loose fitting clothing should be avoided No jewellery such as chains and rings should be wom Ensure that only authorised persons enter the danger area of the machine Any changes occurring on the machine which may affect its safety must be reported to the user immediately Technical staff Technical staff are persons who have been trained in electrical engineering electronics and mechanical engineering They are responsible for lubricating servicing repairing and adjusting the
23. 1 11 01 11 02 11 03 11 04 11 05 12 12 01 12 02 12 03 12 04 12 05 12 05 01 12 05 02 12 05 03 12 05 04 12 05 05 12 05 06 12 05 07 12 05 08 12 05 09 CONTENTS bebe Chapter Page COMMISSIONING seine oe ale th a EN Ee S NR NE ua nd a 8 5 Switching the machine on off AA 8 5 Basic setting of the machine drive unit only on machines with Quick flange motor 8 6 M ounting connecting the start inhibitor only on machines with Ouick flange motor 8 8 e Lal El ME 9 1 Inserting the needle sin ry iniuria ts tenes av antes nega Epea akepa a genteel ets 9 1 Winding the bobbin thread adjusting the primary thread tension 9 2 Removing inserting the bobbin Case AA 9 3 Threading the bobbin case adjusting the thread tension 9 3 PFAFF 938 without thread trimmer an 9 3 PFAFF 938 with thread trimmer ana 9 4 PA et erte a AO a AO a a 9 4 Threading the needle thread Adjusting the needle thread tension 9 5 Setting the zigzag stitch and the stitch position 9 6 Adjusting the stitch length AAA 9 6 Entering the start and end backtacks AAA 9 7 SEW NG EE 10 1 Daming program ereraad aaea ih ee owen ib ie dest vied ded dutta venah 10 2 Counted KE EE 10 2 Enor messages ea eiria EE a AE NEET mean PAARA MA javi jaka ENARA 10 3 Care and maintenance
24. 1 7 01 DV SIPS WETICE EEN 7 1 7 02 Keys on the machine head only on machines with Ouick flange motor 7 1 7 03 Pedala nano ki EE allt Ra Meke 7 2 7 04 Lever for raising presser foot 7 2 7 05 Adjustment lever for zigzag stitch and needle position 7 3 7 06 PRE VERSE ECL EE 7 3 7 07 Stitch length adjustment wheel AA 7 4 7 08 Adjustment lever of the underedge timmer 271 7 4 7 09 Control panel only on machines with Quick flange motor 7 5 7 09 01 Sel pe oja joj ee OI O Ee Deg 7 5 7 09 02 ei nien aa an Aa na Na a An Na on 7 5 8 Installation and COMMISSIONING ssssssssssssssrsssressssrrstrnriretinsrnnttnstinstnnsrnntnnnnnnnnnnnnn nn nnnnnt 8 1 8 01 Installation seot ana ene a NA de hd an ee a ei 8 1 8 01 01 Adjusting the Table EE EN 8 1 8 01 02 Mounting the upper V belt guard Fitting the machine cover 8 2 8 01 03 Fitting thie Veer Stan BEE 8 2 8 02 Fitting the Ouick flange motor ssssssssssesrsseresisssrnstnntinetinstnnstnntnnntinsnnnnnnnnnnnnn nannan ns 8 3 8 03 Fit the belt guard of the Quick flange motor nn 8 3 8 04 Connect the plug type connections and earth cable of the Quick flange motor 8 4 Contents 8 05 8 06 8 07 8 08 9 9 01 9 02 9 03 9 04 9 04 01 9 04 02 9 04 03 9 05 9 06 9 07 9 08 10 10 01 10 02 10 03 1
25. 2 upwards and tum it so that the gauge shows a pressure of 6bar 11 A4 Adjustment 12 12 01 12 02 12 03 Adjustment Notes on adjustment All following adjustments are based on a fully assembled machine and may only be carried out by expert staff trained for this purpose Machine covers which have to be removed and replaced to carry out checks and adjustments are not mentioned in the text The order of the following chapters corresponds to the most logical work sequence for machines which have to be completely adjusted If only specific individual work steps are carried out both the preceding and following chapters must be observed Screws nuts indicated in brackets are fastenings for machine parts which must be loosened before adjustment and tightened again afterwards The machine must be switched off for all adjustment work Danger of injury if the machine is started accidentally Tools gauges and other accessories for adjusting 1 set of screwdrivers with blade widths from 2 to 10 mm 1 set of wrenches with jaw widths from 7 to 14 mm 1 set of Allan keys from 1 5 to 6 mm 1 metal rule Part No 08 880 218 00 Locking pin 6 mm diameter part no 13 030 341 05 Feed dog adjustment gauge part no 91 119 995 05 Hook bearing adjustment gauge part no 91 119 996 05 Needles threads and test material Abbreviations TDC top dead center BDC bottom dead center 12 1 Adjustment 12 04
26. 4 in accordance with the requirements 12 38 Adjustment 12 07 02 Preliminary adjustment of the control cam Reguirement 1 Inthe needle rise position hole 1 the roller lever 4 should lock into the corresponding groove of the control cam 2 The control cam 1 should be touching adjustment ring 3 Fig 12 38 bi Tum control cam 1 screws 2 in accordance with requirement 1 and shift it in accordance with requirement 2 12 39 Adjustment 12 07 03 Position of the thread catcher and cutting test Reguirement When the thread trimmer is in its neutral position the edge of thread catcher 6 should be flush with the edge of the mounting plate 4 Fig 12 39 Tum linkage rod 1 nuts 2 left and right thread in accordance with the requirement LE During the cutting test remove linkage rod 1 loosen screws 3 and remove mounting plate 4 Carry out the cutting test with double thread By turning screw 5 adjust the cutting pressure Fit mounting plate 4 so that its edge is flush with the edge of the bed plate Tighten screws 3 and replace linkage rod 1 12 40 12 07 04 Adjustment Readjustment of the control cam Requirement 1 When the end of the hook guard 3 is level with
27. 938 without thread trimmer Fig 9 04 Insert bobbin 1 into bobbin case 2 Guide the thread through the slot under spring 3 Adjust the thread tension by tuming screw 4 When the thread is pulled the bobbin 1 must rotate in the direction of the arrow Setting up 9 04 02 9 04 03 PFAFF 938 with thread trimmer Fig 9 05 PFAFF 918 Fig 9 06 Insert bobbin 1 into bobbin case 2 Guide the thread through the slot under spring 3 Adjust the thread tension by turning screw A gt When the thread is pulled the Il bobbin 1 must rotate in the direction of the arrow Pull the thread through the slot under the spring as shown in the opposite illustration Adjust the thread tension by turning screw 1 When the thread is pulled the TL bobbin 1 must turn in the direction of the arrow 9 05 Setting up Threading the needle thread Adjusting the needle thread tension V A ve oa en es nf d a WY N ay ot one Ges Sa ZF re A i C ue JI S Fig 9 07 92 019 A Switch off the machine Danger of injury if the machine is started accidentally Thread the needle thread as show in the above illustration Adjust the needle thread tension by turning milled screw 1 Setting up 906 Setting th
28. C 799 Machine class C 1 2 1 1 918 938 2 8 800 Rotating direction of the motor C 0 1 1 1 918 938 O 1 Further parameters are listed in the Motor nstruction Manual 12 45 Adjustment 12 09 Reset Cold start After selecting the reset menu by pressing the corresponding key it is possible to delete seam parameters delete seam programs and to carry out a cold start Press and hold on keys A andD and switch on the machine see Chapter 7 01 Main switch A Resetting the seam parameters zg o Press onkey A All parameters are deleted the display re appears for a short time on the screen Es 8 el B Resetting the seam programs zeg Press Fonkey B It All seam programs are deleted the display rE nA appears for a short time on the screen be T A D Cold start wom Press onkey D E With the exception of the value for the machine class the values of the machine control unit are set back to their basic values the display COLd appears for a short time on S the screen time of delivery For this reason after a cold start it is necessary to re enter first After the cold start all programmed values are set back to their status at the N the parameter 800 and then the parameters 700 to 799 12 46 Adjustment 12 10 Explanation of the error signals
29. PFAFF 918 938 INSTRUCTION MANUAL This instruction manual applies to machines from the following serial numbers onwards 2682 700 gt 296 12 18 600 002 Betriebsanleitung engl 06 09 This Instruction Manual is valid for all models and subclasses listed in the chapter Specifications The reprinting copying or translation of PFAFF Instruction 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 GeigerStr 12 IG Nord D 67661 Kaiserslautern Contents ee LE Chapter Page 1 EEN a A O ET A O eeerebeeie 1 1 1 01 REG EEN 1 1 1 02 General notes on safety 1 1 1 03 Su 1 22 1 04 Important notes for the User 1 2 1 05 Notes for operating and technical staff AAA 1 3 1 05 01 ll E EE 1 3 1 05 02 e ale E naj suck na o S EE 1 3 1 06 Ee oe O A S EEN 1 4 2 et WE 2 1 3 EEGENEN ME IE OI O NE TM NA AA EN NA 3 1 4 Disposal of Et il EEN 4 1 5 Transportation packing and storage ssssesssssesissrrssresissinrttnerinstnnstnntnnnttnsnnnsnn nnn nnt 5 1 5 01 Transportation to customer s premiSES cceeeeeeeeeeeee cence teeeeeeaeeeeaeeteeeeeeaeetaeetaeeeeeeee 5 1 5 02 Transportation inside the customer s premises enn 5 1 5 03 Disposal of packing materials 5 1 5 04 SOAS sai Ee ee 5 1 6 Explanation of svmbols nirre a ai aa E aii aaa 6 1 7 COD Oaza A E ee ei a RNA T 7
30. aused by incorrect settings faulty elements or seam programs as well as by overload conditions For an explanation of the error codes see Chapter 12 10 Explanation of the error messages Correct the error Acknowledge error correction by pressing the TE Speed key 10 3 Care and maintenance li 1101 Care and maintenance CIC AMINIG Sy besos beasts nea aaran dine daily several times by continuous operation Checking the oil level NOOK oil tank ccceeeececeesseeeeseneeecssereeseseeeeessaeesseees once a year4 Checking the oil tank zigzag eccentric lubrication daily before operation Checking adjusting the air pressure daily before each operation Cleaning the air filter lubricator Cleaning the air filter lubricator shift operation If the machine running times are longer shorter maintenance 4 This maintenance interval if for an average machine running time in a single intervals are recommended Cleaning Switch off the machine Danger of injury if the machine is started accidentally Tilt back the machine head Clean the hook and the hook compartment daily more often if in continuous operation Use both hands to set the machine upright Danger of crushing between sewing head and table top 1 Care and maintenance
31. d 12 28 Adjustment 12 05 27 Thread diverter pin Reguirement With the needle bar at bdc the top edge of the thread guide hole must be at the same height as the bottom edge of the thread diverter el WI Fig 12 28 Adjust thread guide bar 1 Screw 2 according to the requirement taking care that it is EF parallel to the bed plate 12 29 Adjustment 12 05 28 Limiting the knee lever stroke Reguirement When the knee lever is pressed the hand lever must drop automatically and the presser foot must be just over T mm above the needle plate TI b gt Fig 12 29 Place the feed dog gauge under the presser foot with its recess facing downwards Lower the presser foot onto the gauge Loosen nut1 and turn screw 2 out a few tums Move the knee lever to the right until a noticeable resistance is felt making sure that the presser foot is not lifted off the gauge and hold it at this position Tum screw 2 in as far as it will go then back out by one tum and lock it in place with nut 1 12 30 Adjustment 12 05 29 Knee l
32. e before commissioning it is better to remove cover5 gt Loosen screws 4 and remove cover5 Take care that no dirt gets into the case Fillin oil up to the top marking 2 Clean the surface of cover5 the case and the seal Replace cover5 and tighten screws 4 JE We recommend PFAFF sewing machine oil part no 280 1 120 146 11 3 Care and maintenance 11 04 11 05 Cleaning the air filter of tne air filter lubricator Fig 11 06 Checking adjusting the air pressure Fig 11 07 ji Switch the machine off A Disconnect the air hose at the air filter lubricator To drain water bow 1 Water bowl 1 drains itself automatically when the compressed air hose is disconnected from the air filter lubricator Cleaning filter 2 Unscrew water bowl 1 Take out filter 2 Clean filter with compressed air or isopropyl alkohol part No 95 665 735 91 Screw in filter 2 and screw on water bowl Before operating the machine always check the air pressure on gauge 1 Gauge 1 must show a pressure of 6 bar If necessary adjust to this reading To do so pull knob
33. e zigzag stitch and the stitch position Set the zigzag stitch width by turning the zigzag lever 1 To vary the adjustment press catch 2 against zigzag lever 1 The setting can be read from scale 3 Set the stitch position by turning stitch position lever 4 stitch position on left stitch position in the middle stitch position on the right L M R Fig 9 08 907 Adjusting the stitch length Adjust the stitch length by tuming the feed regulator wheel 1 The setting can be read on scale 2 fa O Fig 9 09 Setting up 908 Entering the start and end backtacks Switch on the machine If necessary switch off the daming seam or counted seam function see Chapter 10 01 Darning program or Chapter 10 02 Counted seam By pressing the corresponding key A select the desired value for the number of forward stitches A of the start backtack By pressing the corresponding key B select the desired value for the number of reverse stitches B of the start backtack By pressing the corresponding key C select the desired value for the number of reverse stitches C of the end backtack By pressing the corresponding key D select the desired value for the number of forward stitches D of the end backtack By pressing the keys start backtack and or end backtack activate the correspondin
34. ed The number of reguired darning programs can be selected by operating the AL key 1 The number of stitches for the individu al seam sections A and or B can be selected by operating the corresponding H key By operating the corresponding A key it is possible to select a repeating factor C for the selected darning program If the backtack functions are also activated only the status backtack on or backtack off is displayed The individual backtack parameters can be altered after the darning program function has been switched off see Chapter 9 08 Entering start and end backtacks Counted seam The corresponding function can be switched on or off directly with the Counted seam key The darning program function is switched off automatically Several counted seam sections can be selected The number of reguired seam sections can be selected by operating the A key 1 The required number of stitches A of the selected seam section can be selected by operating the corresponding H key If the backtack functions are also activated only the status backtack on or backtack off is displayed The individual backtack parameters can be altered after the counted seam function has been switched off see Chapter 9 08 Entering start and end backtacks 10 2 Sewing 10 03 Error messages If a fault occurs the text ERROR appears on the display together with an error code and short instructions An error message is c
35. efore commissioning the machine remove screw 3 and fill in oil up to the marking inspection glass on the front side of the machine see Chapter 11 03 Oiling the zigzag drive Switching the machine on off Switch the machine on see Chapter 7 01 Main switch Cany out a test run Installation and commissioning 8 07 Basic setting of the machine drive unit only on machines with Quickflange motor Switch on the machine e By pressing the corresponding key call up parameter 798 and select service level ko DCH see Chapter 12 08 01 Selecting the user level By pressing the corresponding key call up parameter 800 rotation direction of the motor Pe By pressing the corresponding A key enter the value 1 Installation and commissioning Sew one stitch by operating the pedal Tum the balance wheel in the direction of sewing until the tip of the needle is level with the top edge of the needle plate By pressing the corresponding AL key select parameter 702 Conclude the adjustment of the sewing motor by pressing the TE Speed key When using another type of motor please observe the motor instruction The adjustment described above only applies to machines with Eco Drive manual of the manufacturer
36. ent With the maximum stitch length set and the needle bar position 1 0 past tdc hole 4 the bottom feed dog must not move when the reverse feed lever is pressed 1 O O JE cal 2 a So SH EE 7d Ca AE O Ge se s Fig 12 14 While continuously operating the reverse feed control adjust feeding eccentric 1 screws 2 in accordance with the requirement the counter sinking in feeding eccentric 1 must be visible o 1 An axial displacement of feeding eccentric 1 is not allowed 12 15 Adjustment 12 05 14 Lifting motion of the bottom feed dog Requirement With the stitch length set at 0 and the needle bar position at 0 25 mm past tdc hole 3 the bottom feed dog must be at its upper point of reversal Fig 12 15 EF Adjust feed lifting eccentric 1 Screw 2 in accordance with the requirement o JI An axial displacement of feed li
37. er stroke AA 12 30 Kniee lever play ins aaae panada paa NE UE kanae teen bie ii et hide reais 12 31 Bobbib Le EE 12 32 Adjusting the underedge trimmer 771 04 e nn 12 33 Resting position of the knife A 12 33 Kie Neg E isti rain si NE atic vee Na im dn k dd eat ii 12 34 Positioning of the knife a ananaenan 12 35 Knife drive SW iteh aa correia tentu eani edie vili eh ed ov thie NES eg dhe taa iS 12 36 Workpiece quar EE 12 37 Adjusting the thread trimmer 900 24 nn 12 38 Axial position of the control cam 12 38 Preliminary adjustment of the control cam enn 12 39 Position of the thread catcher and Cutting test A 12 40 Readjustment of the control cam 12 41 Needle thread tension release AA 12 42 Parameter Setting EE 12 43 Selecting the user level 12 43 Example of a parameter Input 12 44 LISE OF parameters oiaren tda A a dni Dee EE ode 12 45 Ae 12 46 Explanation of the error signals e nana 12 47 Internet update of the machine software 12 48 Wearing parts nn sneti A ie AE A beats Mie MA NE Dedki viii ln lb ibn 13 1 r elle e EE 14 1 Safety 101 102 Safety Regulations This machine is constructed in accordance with the European regulations indicated in the conformity and manufacturer s declarations In addition to this instruction manual please also observe all generally accepted
38. ever play Reguirement When lightly pressing the knee lever there should be a noticeable play between nut 1 and fork3 RS or j Ca tuj C 3 Wi J Fig 12 30 ZF Adjust nut 1 nut 2 in accordance with the requirement and lock it with nut 2 12 31 Adjustment 12 05 30 Bobbin winder Reguirement 1 With the bobbin winder engaged the bobbin winder spindle must be turned reliably but friction wheel 3 must not touch drive wheel 1 when the bobbin winder is switched off 2 The bobbin winder must disengage automatically when the thread is approx 1 mm from the edge of the bobbin LA Vi Za z N tee EE cl v v v H I e q 4 4 z 4 x v i I 4 z 3 S 1117 A JE i P I l I l l I l l Pa TS INN SW LA r 1 kih NHS Savy SS eni N H N N Fig 12 31 Position drive wheel 1 in accordance with requirement 1 and tighten screw 2 LE Place a bobbin onto the bobbin winder thread the bobbin and engage the bobbin winder Move regulating pin 3 in accordance with requirement 2 and tighten screw A 12 32 Adju
39. fting eccentric1 is not allowed 12 16 Adjustment 12 05 15 Drive belt in the gearbox housing Reguirement Drive belt 4 must be tightened so that the machine runs freely and the belt sprockets do not have any noticeable play Fig 12 16 Adjust eccentric bearing bush1 screw 2 in accordance with the requirement and so that drive belt 4 is in the centre of bobbin opener drive wheel 3 12 17 Adjustment 12 05 16 Hook bearing bracket Reguirement The hook shaft must be touching the hook bearing bracket adjustment gauge 1 at the top and the side Fig 12 17 Loosen screw 3 Swing the bobbin case opener to the right and remove the hook Loosen screw 2 and loosen the draw key underneath it by lightly tapping the head of the screw Screw on the hook bearing bracket adjustment gauge It must be possible to read the numbers 438 439 from the front Move or turn hook bearing bracket 4 in accordance with the requirement Tighten screw 2 Adjust the bobbin case opener in accordance with subsection 12 05 21 Bobbin case opener position A 12 18 Adjustment 12 05 17 Hook lubrication Reguirement When the machine is running at full speed after about 10 seconds a fine oil streak should be
40. g function arrow appears next to the corresponding function key Sewing 10 Sewing only on machines with Ouick flange motor In the sewing mode all relevant settings for the sewing operation are displayed Functions can be switched on or off by pressing a key Values for start and end backtacks or stitch placement can be changed directly When the machine is switched on the sewing mode is always activated Switch on the machine if necessary switch off the function daring seam or counted seam see Chapter 10 01 Darning program or Chapter 10 02 Counted seam Functions in manual sewing also see Chapter 7 09 02 Function keys Start backtacks on off Presser foot raised at end of seam on off End backtacks on off Thread trimming on off Needle position raised on off Darning program on off Presser foot raised on off Counted seam on off Sewing is carried out with the pedal functions see Chapter 7 03 Pedal OOOO The Daming program and Counted seam functions are explained in more detail in Chapter 10 01 Darning program orChapter 10 02 Counted seam 10 1 Sewing 10 01 ThA Ze ZE ym 10 02 Darning program The corresponding function can be switched on or off directly with the Darning program key The counted seam function is switched off automatically Several daming programs with different seam sections A and or B can be select
41. ghten screw 2 taking care to see that bobbin opener 1 is touching clamp crank 3 12 23 Adjustment 12 05 22 Bobbin case opener motion Requirement With the needle bar 2 0 past bdc hole 1 the bobbin case opener 3 must be at its right point of reversal Fig 12 23 VE Adjust bobbin opener eccentric 1 Screws 2 in accordance with the requirement 12 24 Adjustment 12 05 23 Bottom feed dog height Reguirement With the stitch length set at 0 and the needle bar position at 0 25 past tdc hole 3 the bottom feed dog must be in the middle of the needle plate cutout and be touching the feed dog height adjustment gauge along its entire length Fig 12 24 Position the feed dog adjustment gauge underneath the presser foot with the cutout EF facing downwards Lower the presser foot onto it Press the feed dog carrier up and position the feed dog in the middle of the needle plate cutout Adjust lifting crank 1 Screws 2 and clamp bushing 3 screws 4 in accordance with the requirement 12 25 Adjustment 12 05 24 Presser foot to needle plate clearance Reguirement When the hand lever is raised the needle should penetrate exactly in the needle hole centre of the presser foot and the presser foot to needle plate clearance should be 7 mm
42. interface or appropriate USB adapter and the machine control unit RS232 Switch on the PC and start the PFP boot program Select the machine type Press the programming button An extra program guick loader is started Switch on the machine within 60 seconds The software update is carried out the update progress is shown on the bar display NWhen the update has been completed the message software update successfully completed appears If this message does not appear the entire procedure must be repeated ZN The machine is not safe for operation until the programming has been completed successfully and without faults Switch off the machine and end the quick loader and PFP boot program End the connection between the PC and the machine control unit Switch on the machine A plausibility control is carried out and if necessary a cold start o More information and assistance is at your disposal in the file PFPHILFE TXT 1 which can be called up from the PFP boot program by pressing the help button 12 48 Wearing parts 13 Wearing parts This is a list of the most important wearing parts You can order a detailed spare parts list for the complete machine under part no 296 12 18 600 91 100 296 25 3x 91 701 179 15 11 108 174 25 PFAFF 918 gt D 91 268 674 91 91 265 ze 3x Gei 91 168 178 05 amp 91 268 679 05 A B
43. irement 12 3 12 05 07 Adjustment Zigzag stitch width Requirement At the largest zigzag stitch setting marking 1 must be at the largest zigzag value on scale 2 O a aR A SE L i Fig 12 08 PE Turn the zigzag stitch adjustment lever 3 in accordance with the requirement Move screw 4 upwards until it touches and then tighten it If the machine is equipped with a needle plate with a smaller hole than is marked on the scale the zigzag limit must be set according to the needle hole width on the needle plate 12 9 Adjustment 12 05 08 Zigzag stitch movement Requirement When the needle bar on the right of its throw is positioned at t d c adjustment hole 2 the needle bar should not move laterally when the zigzag stitch adjustment lever is moved to and fro Fig 12 09 Bring the needle bar on the right of its throw to t d c and place the adjustment pin in hole 2 of the bearing plate locking the machine Tum the zigzag eccentric 1 screws 2 in accordance with the requirement M ake sure that he zigzag eccentric 1 is about mm away from the right inner side of the casting wall Remove the adjustment pin from the bearing plate 12 10 Adjustment 12 05 09 Needle penet
44. led Screw the earth cable from the sewing head and from main switch 6 to earth point A Connect earth point A and earth pointB with earth cable 7 Screw the earth cable 8 from the motor to earth point B Installation and commissioning 805 8 06 Commissioning Examine the machine in particular the electric cables and pneumatic connection tubes for any damage Clean the machine thoroughly and then oil it Have qualified personnel check whether the machine can be operated with the available voltage and whether it is connected properly in the terminal box If there are any irregularities do not operate the machine under any circumstances When the machine is running the balance wheel must tum towards the operator see Chapter 8 07 Basic position of the machine drive unit Connect the machine to the compressed air system The pressure gauge should show a pressure of 6 bar If necessary adjust the value see Chapter 11 05 Checking adjusting the air pressure IR a PRAFF E A a Yi P IM d ll di see Fig 8 07 Fig 8 08 Q lo it 5 3 Before commissioning the machine remove plug 1 from its hole and fill in oil up to marking 2 see Chapter 11 02 Oiling the hook Plug 1 serves as a safety device for transportation and should not be used during sewing operations B
45. lever 1 against the zigzag stitch adjustment lever 3 Turn pivot pin 4 as far as possible to the left Release locking lever1 Locking lever must be parallel to the zigzag stitch adjustment lever3 Tighten screw 2 12 6 Adjustment 12 05 05 Zero stitch and zigzag stitch scale Requirement With the zigzag stitch set at 0 1 the needle bar must not move laterally when the balancewheel is turned and 2 the marking O on scale 1 must be at marking 2 Fig 12 06 Set the needle position adjustment lever 4 to middle and loosen screws 5 and6 EF Run the machine slowly and tum the zigzag stitch adjustment lever 3 to the right until the needle bar no longer moves laterally Tum the machine off Move screw 5 to the right until it touches and then tighten it Loosen screws 7 and move scale 1 in accordance with requirement 2 Tighten screws 7 O H Screw 6 remains loose for the following adjustment 12 7 Adjustment 12 05 06 Centering the needle in the needle hole crosswise to sewing direction Requirement With the zigzag stitch set at 0 and the needle position setting at middle the needle must enter the center of the needle hole as seen across the direction of sewing Fig 12 07 LE Adjust the eccentric pin 1 nut2 in accordance with the requ
46. machine The technical staff is obliged to observe the following points The notes on safety in this instruction manual must always be observed Before carrying out any adjustment or repair work the main switch must be switched off and measures taken to prevent it from being switched on again Never work on parts or equipment still connected to the power supply Exceptions are only permissible in accordance with the regulations EN 50110 All safety covers must be replaced after the completion of maintenance or repair work Safety 106 Danger A working area of 1 meter 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 Never reach into the sewing area while sewing Danger of injury by the needle Never leave objects on the table while adjusting the machine settings Objects can become trapped or be slung away Danger of injury Do not operate the machine without the take up lever guard 1 Danger of injury through the movement of the take up lever Do not operate the machine without finger guard 2 Danger of injury from the needle Do not operate machines with Quick flange motor without start inhibitor 3 Danger of injury if the machine is started accidentally When using an external motor do not operate the machine without belt guard 4 Danger of injury from the drive belts 1 4 Proper use
47. moving the machine plug from the electric power socket nserting the needle Switch off the machine A Danger of injury if the machine is started accidentally Only use needles of system 438 Fig 9 01 Bring the needle bar into its highest position Loosen screw 1 Insert the needle 2 as far as possible The long needle groove must be facing forwards Tighten screw 1 Setting up 9 02 Winding the bobbin thread adjusting the primary thread tension Fig 9 02 Place an empty bobbin 1 onto bobbin winder spindle 2 Thread the bobbin as shown in Fig 9 02 and wind it clockwise around bobbin 1 a few times Switch on the bobbin winder while at the same time pressing bobbin winder spindle 2 and lever 3 JI The bobbin is filled up during sewing The thread tension on bobbin 1 can be adjusted using knurled screw A The bobbin winder stops automatically when bobbin 1 is full If the thread is wound unevenly Loosen nut Tum thread guide 6 accordingly Ce Tighten nut5 Setting up 903 Removing inserting the bobbin case Fig 9 03 AN Turn the machine off Removing the bobbin case Lift clip 1 and remove bobbin case 2 nserting the bobbin case Insert bobbin case 1 until you feel it click into place 9 04 Threading the bobbin case adjusting the thread tension 9 04 01 PFAFF
48. n the needle hole in sewing direction Requirement With the zigzag setting at 0 and the needle position set at midd e the needle must enter the center of the needle hole as viewed in the direction of sewing UI ce Ci Fig 12 03 Bring the needle bar to b d c Adjust the eccentric pin 1 nut 2 and screw 3 in accordance with the requirement 12 4 Adjustment 12 05 03 Parallel guiding of the needle bar Reguirement Guide bar 5 must be parallel to the needle bar Fig 12 04 Bring the needle bar to tdc hole 2 Loosen screws 1 2 and nut 3 The largest eccentricity of pin 4 must be facing downwards Bring the groove on guide bar into a position in which it rests against eccentric pin 4 turn eccentric pin 4 in accordance with the requirement and tighten nut 3 Push guide bar5 downwards and then upwards as far as possible Bushing 6 must not move laterally during this movement readjust eccentric pin 4 if necessary Move guide bar until it rests against eccentric pin 4 and tighten screws 1 and 2 m 12 5 Adjustment 12 05 04 Locking lever Requirement The zigzag stitch adjustment lever 3 must be able to be locked in any position Fig 12 05 Loosen screw 2 Press locking
49. ngth can be adjusted by O turning the stitch length adjustment wheel 1 The stitch length setting can be read on scale 2 z Pse Z Fig 7 07 108 Adjustment lever of the underedge trimmer 771 04 By pulling and turning lever towards the underedge trimmer is switched on and the knife stroke set Do not touch the knife while it is running Danger of injury from the moving knife Fig 7 08 Controls 109 7 09 01 7 09 02 Control panel only on machines with Quick flange motor The control panel consists of display 1 and the function keys described below The display 1 consists of a single line alpha numerical 7 segment LCD display with 8 symbols The texts 2 located above and next to the LCD display show the respective status of the function keys and the operating status of the machine The control panels switches on all LCD segments and the horn automatically for a short time during the power on phase after which the lettering PFAFF appears on the display until the higher ranking control unit sends commands to the control panel The function keys are located around the display 1 They are foil packed without permanent marking and without contact signal Fixed functions are allocated to the keys see Chapter 7 09 02 Function keys Screen displays Activated functions are displayed with a triangular marking 3 below or next to the
50. on the machine 2x Press the TE Speed key twice to select the input mode By pressing the corresponding plus minus key select parameter 798 and the user level B see Chapter 12 08 01 Selecting the user level Select the required value for the maximum speed by pressing the corresponding H key By pressing the TE Speed key the selected value is taken over and the machine switches to the sewing mode 12 44 Adjustment 12 08 03 List of parameters Cc 5 2 5 sigl S 5 ae eB S pa b6 S O 5 9 A w vw Kej O 5 A 1 101 Control panel key tone A B C ON OFF AUS ON EIN 6 605 Speed display B C OFF OFF AUS ON EIN 607 Max speed B C 300 6000 4500 609 Cutting speed B C 60 500 180 660 Bobbin thread control A B C 0 2 0 0 off 1 thread monitor 2 reverse counter 7 700 Needle position 0 B C 0 255 needle reference position 702 Needle position 1 needle lowered B C 0 255 70 703 Needle position 2 take up lever raised B C 0 255 222 705 Needle position 5 end of cutting signal 1 B C 0 255 196 706 Needle position 6 start of cutting signal 2 B C 0 255 136 707 Needle position 9 B C 0 255 150 start thread tension release 797 Hardware test B C OFF OFF AUS ON EIN 798 User level A B C 0 1 11 0 0 User level A 1 Mechanic level B 11 Service level
51. ortation packing and storage 501 5 02 5 03 5 04 Transportation packing and storage Transportation to customer s premises The machines are delivered completely 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 It must be ensured that the machines are only transported in an upright position Disposal of packing materials The packing materials of this machine comprise paper cardboard and VCE fibre Proper dis posal of the packing material is the responsibility of the customer Storage If the machine is not in use it can be stored as it is for a period of up to six months but It should be protected against dust and moisture If the machine is stored for longer periods the individual parts especially the surfaces of moving parts must be protected against corrosion e g by a film of oil Explanation of symbols 6 Explanation of symbols In this instruction manual work to be carried out or important information is accentuated by symbols These symbols have the following meanings AS D Note information Cleaning care Lubrication Maintenance repairs adjustment service work only to be carried out by technical staff Controls 7 Controls 7 01 Main switch The machine is switched on or off by turning the main switch 1
52. ottom feed dog with closed gear box Reguirement With the stitch length set at 0 the bottom feed dog should not carry out any feeding motion when the balance wheel is turned Fig 12 12 Loosen screw 1 EF Fit the fork wrench SW 27 to the spring clamp ring 2 using it to hold the regulating shaft 3 While continually turning the balance wheel adjust the fork wrench on the spring clamp ring 2 in accordance with the requirement In this position move adjusting crank A and ring 5 against the metal frame and tighten screw 1 Cany out a check in accordance with the requirement 12 13 Adjustment 12 05 12 Zeroing the bottom feed with open gearbox Requirement With the stitch length set at 0 the bottom feed dog must not carry out any feeding motion when the balance wheel is tumed w Fig 12 13 Switch on the machine A While continuously tuming the balance wheel adjust reversing crank 1 screw 2 in accordance with the requirement Switch off the machine 12 14 Adjustment 12 05 13 Feeding motion of the bottom feed dog Reguirem
53. ration symmetry left centre and right Reguirement When the zigzag stitch is set at 0 the needle should penetrate in the centre of the needle hole With the maximum zigzag stitch set the needle should penetrate on the left and right at the same distance from the centre hole Fig 12 10 LE Let the needle penetrate in the required zigzag settings using paper Without twisting it adjust zigzag eccentric 1 screws 2 in accordance with the requirement 12 11 Adjustment 12 05 10 Needle position adjustment lever Requirement The left and right throws of the needle must be the same size at the largest zigzag stitch setting and at the left or right needle position Fig 12 11 Loosen screws 1 and 2 LE 6 Set the needle position adjustment ever 3 to middle and the zigzag stitch adjustment lever 4 at the largest zigzag stitch Place a piece of paper underneath the presser foot and perforate it to the left and right with the needle Set the zigzag stitch adjustment lever 4 at 0 and move the needle position adjustment lever 3 to the right left until the needle is exactly over the perforations made in the last step For the left needle position bring screw 1 to a position where it touches and tighten it and for the right needle position do the same with screw 2 12 12 Adjustment 12 05 11 Zero position of the b
54. stment 12 06 Adjusting the underedge trimmer 771 04 12 06 01 Resting position of the knife Requirement When adjustment lever 1 is set at 0 the knife stroke should be as small as possible Fig 12 3 Unscrew the milled screw of adjustment lever 1 Screw 2 EF Remove cover3 screws 4 Place crank5 Screws 6 at right angles to the bed plate and at the same time set a distance of 65 mm between adjustment lever 1 and the bedplate Screw cover3 screws 4 back on Set adjustment lever 1 at 0 Remove cover cap7 and check the lifting motion of the knife by tuming the motor impeller wheel see requirement Adjust crank8 Screw 9 in accordance with the requirement 12 33 Adjustment 12 06 02 Knife height Reguirement When the adjustment lever 1 is set at O and the knife is at the top of its stroke the top edges of the needle plate and knife should be at the same level Fig 12 33 Set adjustment lever 1 at 0 EF Remove cover cap 2 and turn the motor impeller wheel until the knife is positioned at its t d c Adjust linkage rod 3 screw 4 in accordance with the requirement 12 34 Adjustment 12 06 03 Positioning of the knife Reguirement The knife should be touching the counter blade and be positioned at a slight slan
55. t to the stationary knife Fig 12 34 VE Adjust eccentric 1 Screw 2 in accordance with the requirement 12 35 Adjustment 12 06 04 Knife drive switch Reguirement When the adjustment lever 1 is set at 0 the knife drive unit must be switched off and from position 1 on it must be switched on Fig 12 35 Set adjustment over at 0 Turn lever 2 Screw 3 until it pushes switch 4 Set adjustment lever 1 at 1 Check the setting in accordance with the requirement and adjust lever 2 if necessary 12 36 Adjustment 12 06 05 Workpiece guard Reguirement Workpiece guard 1 should be as close as possible to the knife 3 and be touching stop 4 Fig 12 36 VE Adjust workpiece guard 1 Screws 2 in accordance with the requirement 12 31 Adjustment 12 07 Adjusting the thread trimmer 900 24 12 07 01 Axial position of the control cam Reguirement 1 Roller should be at a distance of 0 3 mm from the control cam 1 2 Adjustment ring 3 should be touching the control cam1 Fig 12 37 Shift control cam 1 screw 2 and adjustment ring 3 Screw
56. visible on a strip of paper held over the needle plate cutout Fig 12 18 LE Adjust screw 1 in accordance with the requirement 12 19 Adjustment 12 05 18 Pre adjusting the needle height Requirement With the needle bar at tdc hole 2 the distance between the point of the needle and the needle plate must be 19 mm HIN Fig 12 19 JE Without tuming it adjust the needle bar Screws 1 in accordance with the requirement 12 20 Adjustment 12 05 19 Needle rise hook to needle clearance and bobbin case positioning finger Requirement 1 With the needle position set at middle the zigzag stitch setting at 0 and the needle bar position 2 0 past bdc hole 1 the hook point must be in the middle of the needle and the distance between the needle and the hook point must be 0 05 0 1 mm 2 The bobbin case positioning finger must be fitted so that there is a clearance of 0 5 mm between the bottom section of the bobbin case and the front edge of the bobbin case positioning finger See arrow Fig 12 20 Adjust the hook screw 1 in accordance with requirement 1 Fit the bobbin case position stop in accordance with requirement 2 12 21 Adjustment
57. z Version 10 03 04 General plan circuit diagrams n Ob SE z mien Ses NISS OL3 8 kel SES i E gt mH Sse x 5 MTISS ELV Z F un Sst N 6 ooo atz Oe Z x m lt SOHN MdN Z7 9 m ayseyjapeyuly un Ne x N U Ve ab Lu WY 1S4 3 71 JF ae SEH uusigzu 2 z m LI o GITAT EE F z gt 6unjyezu2IJS m a Es Za m S x yZ qaqa anovi Jem g z z Z WNL LA S E sin 4 puep uoa JA E me 3 LLI M lt L ra a Ee ir S tt om LU Wa J E O s CO t x SO q vey oOo N Jo tu x Ge 3 ISJ 8Y 9E uaso Uedg pej WY CH vN NS LN a be vzg gt a ES a S dOLS 94 UL F z aJJadsjnejuy wo B NO A si s ue Ch Ak E dd iv SE Com eNe Ydd 1015 o CI m LO H lt soa X WAL Sv 7 o n YA LL6 o 35 m gt voj so On m 8 dNS Zum gt me A es Japiauy2su8peJ 006 m i 2 azt ES oe vzs SC z co X5 14 3 91 191 469 95 part 3 Version 10 03 04 it diagrams CIFCUI General plan 6l HL LL Gz K EZ zz D oz FPS 44IUYIS ZEZSY SYUEIYISLYINT Ja YIOMUSPeJJafuy uoi4d0 uo1 do RE r

Pfaff 918 Sewing Machine User Manual

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