MOD. HAND-STITCH Machine for decorative sewing USER S AND MAINTENANCE MANUAL

Transcription

1 MOD. HAND-STITCH Machine for decorative sewing USER S AND MAINTENANCE MANUAL

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3 GENERAL WARNINGS INTRODUCTION This user s and maintenance manual is an integral part of the machine and contains information regarding safety required by EEC directive 89/392. Before using the machine the buyer should ensure that the users of the machine are aware of the contents of this manual, in particular safety related warnings. If this manual is lost or destroyed, ask COMPLETT s.r.l. for a new copy. The user s and maintenance manual contains important recommendations for correct use of the machine. Compliance with the rules and recommendations contained herein helps to avoid dangerous situation, repair costs and machine downtime and also helps increase the machine s reliability and duration. The user s and maintenance manual must always be available in the place where the machine is used. The user s and maintenance manual be read and used by every person assigned to working on the machine. The user is required to check the machine and inspect for any damage or visible faults from the outside which may affect safety and to communicate these. In addition to the instructions contained in this user s and maintenance manual, the user is required to comply with general statutory laws related to safety and accident prevention. COMPLETT s.r.l. shall not be held civilly or criminally liable for an accidents which are the result of a failure, even partial, to comply with even one of the instructions and warning container in this manual. COMPLETT s.r.l. shall not guarantee its products if they are used with spare parts which are not expressly authorised. COMPLETT s.r.l. reserves the right to change or vary, for technical or commercial reason, the data and information contained in this manual. EC MARK in compliance with EEC directive 89/392 (see declaration of conformity). GENERAL NOTES When the machine arrives make sure there is no damage or missing parts. If there is damage contact COMPLETT s.r.l. Make sure that the supply matches the order specifications. To dispose of the machine sort the materials are required by law in your country. After carrying out these operations contact specialised companies which deal with recycling.

4 SAFETY REGULATIONS Failure to comply with these safety regulations may cause injury to individuals or damage to the machine The machine must be installed by specifically trained specialized personnel, after having carefully read the instructions. The machines have been designed and built to meet safety requirements for operation in dry and accurately cleaned environments and for sewing dry fabric. The machines are equipped with accident prevention guards; the user must not, for any reason, disassemble, remove deform or disable the guards, even partially, since risks may arise from such for the operator or any other individuals. The machine must be used exclusively for the use it is intended for, complying with all the safety regulations in force and manufacturer s instructions to avoid risks of accident. In particular, the machine must never be used: - holding or pulling the fabric while sewing; - with incorrect clothing, i.e. loose and flowing, long hair not tied back, etc.; - continuously by disabling the start pedal (for example by putting a weight on it); -keeping a hand on the hand wheel with the machine running; -feeding the fabric using tools or equipment (tweezers, scissors, screwdrivers, etc.). The machine must absolutely be turned off using the main switch before carrying out any replacement, disassembly or assembly operation, for example, replacement of the needle, sewing parts (presser foot, thread loading bobbin, chainstitch guide, crochet, needle plate, etc.), threading etc. when you leave the work area and when maintenance work is done. Maintenance work must be carried out by properly trained personnel. Before working on the electrical system, or in general on any live parts, the plug must absolutely be removed from the socket. Work on the electrical system must be done by specialised electricians. Work on live parts and devices is forbidden. Before reconnecting to the mains make sure that all the guards have been closed and any protection devices which have been removed are refitted.

5 INDEX 1 SEWING MACHINE INSTALLATION Bench and lamp assembly Motor voltage Test runs 2 DESCRIPTIVE CHART OF WORK CYCLES Description 3 NEEDLE TABLE Needle category Needle size Needle quality Needle application Needle-Needle guide 4 ADJUSTING NEEDLE AND POINT Needle replacement Point replacement Point height 16 ADJUSTING THE SLOW STITCH DEVICE Assembly and timing 17 ADJUSTING THE SYNCHRONISED SLOW STITCH DEVICE Description Adjustement 18 ADJUSTING TENSION STARTING Position 19 MAINTENANCE AND LUBRICATION Tables 20 TECHNICAL FEATURES 5 ADJUSTING NEEDLE BAR HEIGHT Timing table 6 ADJUSTING THE UPPER HOOK Position and timing Cyclic 7 ADJUSTING THE NEEDLE GUARD Position 8 ADJUSTING THE THREAD MOVEMENT HOOK Position and timing Cyclic 9 ADJUSTING THE THREAD LOADER Position and timing Cyclic 10 ADJUSTING THE ROTATING CROCHET Timing 11 ADJUSTING THE THREAD LIFTER Position and timing Cyclic 12 ADJUSTING THE TENSIONING UNIT Adjustements 13 ELECTROMECHANICAL RESETTING OF THE FEEDER Instructions 14 ADJUSTING THE LOWER FEEDER Position and timing 15 ADJUSTING THE UPPER FEEDER AND PRESSER FOOT Assembly and timing

6 1 SEWING MACHINE INSTALLATION BENCH AND LAMP ASSEMBLY (Fig. 1) Secure the table (1) to the bench using the holes set up for securing the hinges, fit the drawer holder support (2), fit the multiple bobbin holder (3) in the lower part of the head, so that the chromed rod for threading the thread is in a vertical position above the head, fit the front work surface (4), complete with overturning part, to the screws on the bench. Loosen the fixing screw of the lamp (5), turn it to work and retighten the screw previously loosened. Use a soft cloth to clean the work area (presser foot and needle part unit) MOTOR VOLTAGE Electrical supply: 220 AC TEST RUNS The sewing machine is controlled by a motor with CPU used fr progressive control of the speed the pedal (6) Fig. 1. Insert the light plug in the mains socket, insert the air tube with and operating pressure of 5 atm. (7) Fig. 2. With the machine turned,pushing the pedal forward, the speed of the sewing machine increases progressively until the maximum pre-set rpms are reached; when it is released the sewing machine goes into the low needle position, both in the 1 st and 2 nd cycle, at a constant speed. With a back heel movement of the pedal (i.e. backwards) the needle moves to the threading position.

7 2 DESCRIPTIVE CHART OF WORK CYCLES DESCRIPTION The formation of the stitch occurs in two work cycles. 1 st cycle: Formation of the stitch on the upper part of the fabric. The 1 st cycle starts with the threaded needle which descends from the P.M.S. with the hook (46) which starts the stroke to pick-up the thread on the needle and ends with the needle returning to the P.M.S. without the thread, while the upper hook is in the standby position behind the needle. Fig. 3-3A - 3B. 2 nd cycle: Formation of the stitch on the lower part of the fabric. The 2nd cycle starts with the needle without thread which descends from the P.M.S. with the hook (46) in standby position behind the needle and ends with the threaded needle returning to the P.M.S., while the hook (46) starts the stroke to pick-up the thread on the needle Fig. 4-4A - 4B. To complete the two work cycles the needle bar, upper hook and rotating hook ( 47) carry out the following movements: A) The needle bar makes two back and forth strokes. B) The upper hook (46) makes only one back and forth stroke. C) The rotating hook (47) makes two completed 360 turns.

8 3 - NEEDLE TABLE Use SCHMETZ type 780 C.C03.SPI.DH needles only. For a better use of needles see the attached tables. Type COMPLETT NEEDLE CATEGORY 780 C Round tip needle 780 C03 Round tip needle with decreased eye 780 SPI Very sharp round tip needle 780 DH Cutting tip needle with triangular shape COMPLETT NEEDLE SIZES Size 90/14 100/16 110/18 125/20 140/22 160/ C x x x x x x 780 C 03 x x 780 SPI x x 780 DH x x x x x Type COMPLETT NEEDLE QUALITY 780 C Standard needle 780 C03 Special needle for skipped stitches 780 SPI Needle for reducing fabric damage 780 DH Cutting needles for straight seams Type COMPLETT NEEDLE APPLICATION 780 C Fabric and leather 780 C03 Fabric sewn with a differentiated number of cloths 780 SPI Dense, thin or smooth fabric 780 DH Layered fabric, leather and hard leather Needle Needle guide

9 4 ADJUSTING NEEDLE AND POINT Needle replacement (Fig. 5) Loosen clamp 26 and remove the needle by pulling it up. Select the needle size with the corresponding needle guide from those indicated in the table. Insert the needle with the flat part of the shank towards the left in the clamp 26 and needle guide hole 17. Place the needle firmly against the ring 25. Lift the clamp 26 and tighten the screws with moderation. Point replacement (Fig. 6 / 6A / 7 / 8) Carefully clean the needle guide groove. Insert the point in the needle guide groove so that it protrudes slightly from the rear part. Lock screw 19 being careful that the point does not move. Insert the needle and make sure that the pressure the point exerts on the needle is light. Insert the needle guide on the needle bar and put the needle in its position. Tighten screws 26 and 27. Lift the needle guide up making sure it moves freely. N.B.: At the end of needle and point replacement operations make sure the needle guide moves on the needle. Bring the needle to PMS. Remove the point lift cylinder cap. Loosen screw 27. Lift the needle guide until touching the needle clamp and tighten screw 27. Make sure lifting and lowering movements are smooth. Point height (Fig. 7 / 8) The height of the point (18) needs to be established in relation to the needle. The adjustment is exact when the point closes the space between the two needle hooks, surpassing the point of the lower one by mm (varies based on needle size) and the needle bar is at P.M.S. Fig. 7. The adjustment is made using the aluminium cap (10). By rotating clockwise the point rises, anti-clockwise it lowers. Lock the adjustment by tightening the screw (36) inside the cap. Fig. 12.

10 5 ADJUSTING NEEDLE BAR HEIGHT Turn the hand wheel until the needle bar is at its P.M.S. Loosen the guide clamp screw (20). Adjust its height so that the distance between the needle tip and needle plate measure with a calliper (29) Fig. 9 is in compliance with the timing table (e.g mm). Carefully tighten the clamp (20) to avoid deforming the external part of the needle bar. When carrying out these adjustments it is advisable to slightly direct the needle bar towards the left. With the needle bar at P.M.I. the reference notch ( 30 ) on the hand wheel needs to be aligned with the reference notch (31) on the sewing arm. Example of needle bar height to 15,8 mm.

11 6 ADJUSTING THE UPPER HOOK Assembly and timing: Fit the upper hook (46) by positioning its tip at a height of approximately 0.3 mm over the needle bar height, from the needle plate plane. The hook tip must have an inclination compared to the needle of approximately 5, to avoid breaking the needle in the return stroke Fig.11. This adjustment is made by rotating the hook in the hook holder (48). Fig. 12. By turning the hand wheel in the second cycle, with the needle bar lowered, bring the back of the needle guide (17) into line with the upper hook. Adjust the distance of 1 mm between the rear part of the hook and that of the needle guide. This adjustment is made by moving the hook holder (48) in its mounting (49) Fig.12. Bring the bar to its P.M.S. in the first cycle, lower by 1 mm. Keeping the need bar in this position turn the cam (50) in the rotation direction of the sewing machine until the tip of the hook is in the centre of the needle and at around 1 mm above the needle tip Fig. 13. The cam locking screws can be reached from the hole (51) above the machine arm. Fig. 14. Before completely tightening the screws move the cam closer to the roller bearing installed on the hook control lever making sure there is a 0.5 mm distance between the bearing and the end of the cam track (50) Fig. 14. Cyclic: The upper hook starts its thread pick-up stroke towards the needle with the needle which begins to lower from the P.M.S. of the 1 st cycle.

12 7 ADJUSTING THE NEEDLE GUARD Positioning: Make sure there is no axial play in the thread movement lever unit (42) Fig. 15 To eliminate any play push the internal pin (43) towards the base of the machine so that the unit always remains free to rotate on the pin. The needle guard (44) Fig. 16 is used to protect the needle from any contact with the tip of the rotating hook. These contacts can be caused by bending of the needle through heavy fabrics, through the thickness joints or others. The part of the needle guard that carries out this function, is the internal side of the shortest tooth. Thus, adjust the needle guard so that the needle is positioned exactly in the centre and it starts to touch the needle guard when lowering as indicated in Fig. 16. Bending of the needle on the needle guard must be minimal.

13 8 ADJUSTING THE THREAD MOVEMENT HOOK Positioning and timing: The thread movement hook (37) must be installed so that its tip projects forward 0.3 mm from its leg. Fig. 17. Turn the hand wheel to bring the thread movement hook to the end of its stroke, then adjust the height so that there is 0.3 mm between the lower unloaded part of the plate and the highest point of the thread movement hook. Fig. 18. Bring the thread movement hook to the end of its stroke behind the needle, adjust the lever (38) so that the thread movement hook is 2.5 mm from the needle and the external part of its point protrudes 0.2 mm to the left of the needle. Fig.19. The positioning is correct if at the same time in which the thread movement hook ends its stroke behind the needle, the tip of the needle descends to the same height as the thread movement hook tip. The cam (39) which controls movement of the thread movement hook is united to the cam (40) which controls the tensioning unit. Fig. 20. Cyclic: The thread movement hook starts its stroke towards the needle with the needle bar which begins to descend from the P.M.S. of the 1 st cycle.

14 9 ADJUSTING THE THREAD LOADER Positioning and timing: The thread loader (77) is used to load the thread on the needle, with the needle bar rising from the P.M.I. of the second cycle. The rear part (A) of the thread loader, in its position closest to the needle, needs to barely touch it without bending it at a distance of 0.1 mm. It can be adjusted by loosening the two screws (78) and moving the thread loader. Fig. 21. When the thread loader is at the end of its stroke towards the right, the internal point (A) must be mm from the right edge of the thread loader wheel. Fig. 22. The correct distance is obtained by adjusting the tie-rod (79) between the two joints. Fig. 21. Adjustment of the height is obtained by bending the thread loader, so that there is 0.5 mm from the upper part of the thread loader wheel Fig. 22 and mm from the lower part of the jaw Fig. 23. To control the exact timing, the cam (75) Fig. 24 must be positioned so that the thread, brought by the thread loader, starts to touch the needle around 2-3 mm above its opening Fig. 21. This operation must be carried out with the sewing machine threaded and using the open calibre needle plate. Cyclic: The thread loader starts its stroke towards the needle with the needle bar which begins to rise from the P.M.I. of the 2 nd cycle.

15 10 ADJUSTING THE ROTATING CROCHET Timing: Remove the thread loader wheel (52) and remove the rotating hook (47) from the thread loader wheel. Remove the pin with the pulley (54) being careful to not lose the pulley and clean everything accurately. Check the rotating hook and remove any marks or notches, polish all the surface in contact with the thread. Fig. 25. Insert the pin with the pulley in the specific hole on the thread loader wheel, fit the rotating hook into its seat and tighten the screws (55) trying to align the profile of the hook as much as possible with that of the wheel. Fit the pin with the pulley (54) on the rotating hook by inserting it in its seat and tightening the screws (56) checking with a thread that the pulley moves freely. Make sure that the thread loader wheel is perfectly smooth particularly in the thread passage points. The thread loader wheel and fixed bronze crown need to be carefully cleaned to remove any grease, oil, etc. Loosen the scraper ring from the thread loader wheel and tighten the screws so that the ring is only rubbing on the shaft. The reference notch of the ring must be on the left. Loosen the grub screw (142) that secures the timing eccentric (57) of the thread loader wheel, position the groove of the eccentric in line with the groove of the hub (41), facing the part of the eccentric which protrudes from the hub towards the external diameter of the wheel. Tighten the grub screw which secures the eccentric. (Fig.25) Turn the hand wheel bringing the needle to the P.M.I. insert the thread loader wheel on the main shaft matching up the end part of the eccentric (57) with the notch on the ring. Then move the point of the rotating hook with needle up to 0.1 mm from the part of the groove. Use the calliper (29) (Section 5 ADJUSTING NEEDLE BAR HEIGHT) to establish the exact P.M.I. With the needle bar at P.M.I. the find the measurement in the timing table, positioning the point of the rotating hook on the centre of the needle Fig. 26 (e.g. 1.5 mm) In this exact position with the needle threaded the thread will form the loop Fig. 27. At this point remove the thread loader wheel and tighten the reference ring. Refit the thread loader wheel and tighten the hub screw. The timing can be changed by rotating the eccentric of the thread loader wheel, without touching the reference ring again. Before making this adjustment, loosen the thread loader wheel set screw and the eccentric set screw.

16 11 ADJUSTING THE THREAD LIFTER Positioning and timing: To distinguish between the two thread lifters we will call them front (72) the nearest to the operator and rear (73) the nearest to the needle. The front thread lifter needs to be mm from the edge of the thread loader wheel and the rear one mm. Fig. 29. Their timing is correct, if in the first cycle the tip of the upper hook (46) Fig. 28 arrives on the centre of the needle at the same time that the thread lifters are at the lowest point of their stroke. Use the cam to time the thread lifters (74) Fig. 30. At the highest point of its stroke the front thread lifter must have the point 5 mm above the circumference of the thread loader wheel. The transversal adjustment of the thread lifters is obtained by moving the pin which supports them axially placing the front thread lifter at 3.5 mm from the plate (71). Cyclic: The thread lifters end their downward stroke when the tip of the upper hook arrives in the centre of the needle descending from the P.M.S. of the 1 st cycle.

17 12 ADJUSTING THE TENSIONING UNIT Adjustments: Remove the thread loader wheel. Disassemble the tensioning unit (58) remove the nut (59) of the tie-rod with spherical jointed head and the two screws which secure the unit. Fig Adjust the spring of the thread holder (62-63) levers using the ring nut (64) after having loosened the screw (65). Adjust the spring of the thread movement burr (61) Fig. 33 using the hex cap that supports it. The pressure exerted by the thread holder levers must be greater than that exerted by the thread movement burr. Keeping this ratio, adjust the two springs so that the minimum pressure needed is obtained, adjust any axial play of the tension unit and make sure that there is a rapid and safe return of moving parts. Reassemble the tensioning unit reseating the two reference bushes, tighten the two set screws and the tie-rod nut. Position the thread guide bracket (67) Fig. 34 so that there is 0-2 mm of space on the thread guide plate (71) Fig. 29 mounted on the stationary bronze wheel. Refit the thread loader wheel without locking it. Turn the hand wheel by hand and bring the closed tensioning to the end of its stroke towards the right. The distance between the closet tensioning and the right edge of the thread loader wheel must be 18 mm. Fig. 34. To obtain this distance adjust the tie-rod (66) between the two joints. Fig. 32. Dissemble the thread loader wheel. Cam timing (40) Fig. 35 is correct if in the first cycle the tail of the upper hook arrives (46) Fig. 36 at the centre of the needle and the thread holder levers (62-63) are resting on each other after having opened around mm. To adjust this opening, use screw (70) after having loosened the counter nut Fig.31. The thread guide bracket (67) again in the previous phase must position slightly to the left of the thread guide plate (71). Fig. 29. Refit the thread loader wheel and tighten the locking screw.

18 13 ELECTROMECHANICAL RESETTING OF THE FEEDER Adjustements: 1- Loosen the screw 1 on the driver pulley Fig Press the 2 key on the display, enter the menu "stitch length" and set both values of upper limit and the lower point of "0". If they are stored over a sequence of points, press the key 31 and set "1". 3- Loosen the screw 2 4- Align the links of transport support B 5- Tighten the screw 2 6- Place a sheet of paper between the presser foot and the feed dog and run the sewing machine. The needle should enter and exit in the same hole on the sheet and this must remain stationary. If there is even a slight movement of the sheet, repeat the steps described in points and repeat the test with the paper. 7- Tighten the screw 2 8- Turn off the sewing machine. 9- Turn on the sewing machine, the motor automatically goes to the transport position to "0" electronic encoder.

19 14 ADJUSTING THE LOWER FEEDER Positioning and timing: 1) Exactly centre the plate needle hole (28) with the needle making sure the plate is perpendicular Fig ) Set the upper and lower stitch length to the maximum on the sewing machine display. 3) Loosen the screws of the jaw lifting eccentric (83) and screw of the stitch lengthener fork (84) Fig ) Transversally and longitudinally centre the jaw (85) in the needle plate, making sure that at the limits of its stroke the two ends of the jaws are equidistant from the internal parts of the needle plate rake. To obtain this adjustment use the fork (86) ad eccentric (83) keeping the connection rod (87) aligned. Tighten the screws of the jaw lifting eccentric and stitch lengthener fork Fig ) Loosen the screws that secure the stitch lengthener eccentric (91) Fig.40. Turn the hand wheel bringing the needle bar to the P.M.I. Activate the stitch lengthener support (80) by hand making sure that the jaw does not move. Fig. 40. If the jaw moves, turn the stitch lengthener eccentric ( 91 ) until finding the right position. Tighten the eccentric screws keeping the connection rod (92) aligned. 6) Turn the hand wheel bringing the jaw (85) Fig.41 to its highest point outside the plate and using the screws (88-90) Fig.39 adjust its height, around 0.8 mm, while with the screw (89) position it parallel to the plate at the time when it comes out of the plate. 7) The needle must be at the same height compared to the plate, both in the phase when the jaw starts to protrude from the plate and in the phase when it retracts under the plate. To obtain this phase use the jaw lifting eccentric (83) keeping the connection rod (87) aligned Fig.39.

20 15 ADJUSTING THE UPPER FEEDER AND PRESSER FOOT Assembly and timing: Insert the driven foot (107) in the support (112), in a machine cycle where the jaw is under the needle plate. Fig. 42. Use the knee pedal to obtain a distance of round 0.3 mm between the guide lever (116) and presser foot feeder (108). Align the driven foot with the jaw. In this position lock the guide lever Allen screws, so that when the knee pedal is released, the driven presser foot sits on the needle plate. Bring the needle bar to the P.M.S., secure the jointed foot at round 1.6 mm from the needle plate and make sure it is parallel with the driven foot, make sure that the two feet raise by the same height from the plate, adjustments can be made with the screw (141) Movement of the feet must be coordinated and centred, compared to the jaw, by using the fork feeder lever (110) and changing the position of the joint (114) in the groove of the driven foot drive lever (113). The screw for adjusting the joint(114) is accessible from the hole on the right part of the support. Fig Make sure that when the fork feeder lever is locked, that the dowel snap ring (111), just touches the lever without blocking its movement. Turn the hand wheel to make sure that with the stitch length at the maximum the moving parts do not run into each other. Replacement of a series of light sewing PL with heavy MP one requires a new longitudinal centring of the jaw. Time the foot lifting eccentric so that the driven foot descends on the jaw at the time when it starts to protrude from the needle plate. The alignment between the eccentric and connection rod is very important. The eccentric can be reached from the plastic cover housed on the upper part of the machine arm. Turn the hand wheel to bring it into the threading position. Use the knee pedal to lift the feet to the maximum, making sure that the needle is not lower than the presser foot. This adjustment is made with the foot lifting lever which can be reached from the plastic cover housed in the rear part of the machine arm.

21 16 ADJUSTING THE SLOW STITCH DEVICE Assembly and timing: In P.M.I. needle position check the distance show in fig. 45 between part 127 and casting. Turn the wheel by bringing the machineto the position where the upper hook 46 fig. 28 start its stroke towards the needle in the 1st cycle. Adjust the height and orthogonal position of the clamp 127. The height must be adjusted obtaining a distance of 3 4 mm. between the control lever and shank of the upper hook. The orthogonal position must by adjusted by placing the longitudinal axis of the machine parallel with the shaft attached to the control lever. Both there adjustements are made with the clamp screw 127. Adjust the spring compression by turning the ring nut 128 so that it exert enougth force to bring the device safety back to its starting position. Position the height of the drift 129 so that there is a distance of 1 1,5 mm. between the lower part and the needle plate with the needle bar in the P.M.I. Slightly tilt the drift by rotatine the tip towards the jointed foot, then tighten the screw that locks the drift. The soft stitch effect will be estabilished by the operator in compliance with particolar requirements by turning the knob 142. Turn the hand wheel bringing the needle bar to the P.M.S. in the phase where the upper hook start its thread pick-up stroke towards the needle. In the position the opposite ends of the drift and upper hook are 3 mm. on their vertical axis Fig. 44. To obtain this distance use the screw 140 by moving the thread return lever radially 130. The adjustable stop 143 Fig. 44 Sez. L-L, is used to adjust the end position of the drift behind the needle. Adjust the stop so that there is enough distance between the drift and jointed foot for unhooking the thread, when it gets stuck behind the needle. Make sure that the drift does not come into contact with other moving parts along its entire stroke. The soft stitch device sets the tension of the upper stitch.

22 Description: 17 INSTRUCTIONS FOR ADJUSTING THE SYNCHRONISED SLOW STITCH KIT The P.L.S. device is used to adjust the upper stitch tension in two times. If we use a short long stitch at times we find two different thread tensions when the stitch inverter is enabled. The longer stitch is slower than the short stitch. With the P.L.S. we can adjust the tension of the long and short stitches separately and automatically. An additional knob adjusts the tension of the inverted stitch. A pneumatic cylinder synchronised with the feeder moves the P.L.S. lever in order to adjust the tension of the upper stitch when the inverter is enabled Basically, if we adjust the looseness of the short stitch and by inverting the stitch the long stitch is too slow, with the P.L.S. it is possible to give the right tension to both the short and long stitch. The features of P.L.S. are most used in garments for men s shoulders. Adjustment: - Use the stop knob A to adjust drift B bringing it to its point closer to the presser foot until it almost touches it - Adjust the drift to a height of 1 mm from the needle plate, with the needle bar at the P.M.I. - Adjust the drift transversally using the knob C so that it picks up only the thread to the right of the needle while it returns to its standby position - Adjust the stop knob B after having enabled to stitch inverter, the adjustment varies based on the stitch length, find the position where the stitch has the best tension - The stitch is looser if the drift B is close to the presser foot. - The position of the drift must be within the space between the needle guide and presser foot, with the needle bar at the P.M.I. - Make sure the drift does not run into the needle while sewing

23 18 ADJUSTING TENSION STARTING Positioning: The thread brake tension unit (135) is used to hold the thread during the first stitches, before it is cut. The tension must only start when the knee pedal is used. Adjustment of the tension unit is obtained by adjusting the height of cam (136) installed inside the arm on the foot lifting connection (137) or by moving the unit (135) along its axis, after having loosened the locking screw (138). When the machine is ready for threading make sure that the tension starts before the feet lift, when the knee pedal is used. Fig. 47

24 19 MAINTENANCE AND LUBRICATION The lubrication and cleaning of the machine must be effected periodically at least once a month. Remove machine operation, except for the ball bearings and various areas where the thread passes. The cam must be lubricated with special grease for gears, for all the other moving parts use dense seed oil for industrial sewing machine type TERESSO 32 E/50 C. SUPERIOR LUBRICATION

25 LUBRICATION LOWER

26 LUBRICATION LOWER

27 20 TECHNICAL SPECIFICATIONS Sewing motor: brushless Motor transport:: brushless Speed up to 600 rpm Needles: Schmetz system 780C - 780C03-780SPI - 780DH Stitch length: long stitch max 7,0 mm. short stitch minimum 0,8 mm. Electronic conveying Stitch attachment Programmable sewing Synchronised slow stitch Complett dedicated electrinics Thread section: maximum length 80 cm. Air pressure: 5 atmospheres. Lamp: Led Dimension: support 60x90 table 94,5 x 120 work surface height cm. 83.

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