Instruction/ maintenance manual of the product coverlock 4772 Pfaff
Go to page of 81
PFAFF coverlock 4772 I:.t i:i L. cover10 4772 I Instruction manual.
For easier understanding of this instruction book please fold out this and the last page when reading. Safety rules For the United Kingdom only The leads must definitely not be connected to the safety lead terminal I nor to a plug with three pins.
.
Parts of the coverlock 4772 (1) Upper thread tension (2) Upper thread tension (3) Carrying handle (4) Thread tension/upper looper thread (5) Thread tension/lower looper thread (6) Thread tension/Two-t.
Important safety instructions For the United States only This sewing machine is designed and manufactured for HOUS EHOLD use only. When you use an electric appliance, the follo wing basic safety precautions should always be adhered to: Read all instructions before using this sewing machine.
Notes on safety Notes on safety for domestic sewing machines according to EN 60 335-2-28 or IEC 335-2-28. 1. The user must exercise adequate cau tion with regard to the up and down mo vement of the needle and keep the se wing area under constant observation while working.
Simple, up-to-date sewing Congratulations! You have bought a high-quality product that provides unique advantages. Your new coverlock 4772 can take any material in its stride and will sew for you through thick and thin.
Contents Page Accessories . 6 Accessories, special 59 - 69 Accessory box 6 Adjusting the machine to cover stitch and 2-thread chainstitch 30 - 33 Bed slide for stitch width latch, setting 25 Blade gua.
Contents Page Serging problems and their solutions 72, 73 Specifications 74 Spool centering piece 9 Spool holder 9 Spool net 9 Stitch length, setting 27 Stitch width latch, setting 25 Telescopic threa.
Accessory box Pull the accessory box (13) to the left and re move the accessories. Accessories The following accessories are included with the machine: 1 Machine oil 2 Power table 3 Cover-stitch needl.
Plug the foot control plug into the connec ting bush (31) of the machine and the plug socket. The sewing speed is regulated by activating the foot control. You may also re gulate the sewing speed by adjusting the slide on the front of the foot control.
Push the looper cover <8) fully to the right and then swivel it down. Each threading path and the mounting procedure for the converter are portrayed in color on the insi de of the machine. The threading method for the lower overedge looper 117) and the most common stitch types are shown sym bolically on the inside of the looper cover.
With synthetic threads which unwind too Use the spool centering piece (30) when se quickly from the spool, pull the spool net ac- wing with large spools (5000 10,000 ml, as cessory over the spool from below. Now shown in the illustration above. you can mount the spool on the spool hol der.
This machine has four different needle posi tions and can sew with a maximum of two needles at any one time. Retaining screw A belongs to the right overedge needle, retai ning screw B to the left overedge needle. Thread unreeling disc The thread unreeling disc (in the accessory box) is used for small spools.
To insert: Insert the needle into the hole of the needle changing aid, so that the flat needle shank (K) faces the flat side (LI of the aid accessory. Now insert the needle fully into the holder and tighten the fastening screw. Remove the needle changing aid.
Threading A color-coded threading diagram for quick reference is to be found behind the looper cover, i.e. inside the machine. Thread the individual threads - as shown - following steps 1 to 5. Place the spools on the spool stands (29). Notes on the spool net, thread unreeling disc and spool centering piece are to be found on pages 9 and 10.
Threading Upper overedge looper (pink) Thread by following the steps 1 to 8. Insert the thread from the front through the eye 8 of the upper overedge looper. Pull ab out four inches (10 cml of thread through the looper and lay it to the left underneath the presser foot.
Threading Lower overedge looper (yellow) Turn the hanc(wheel in the direction of the arrow until the lower overedge looper (17) is positioned at the extreme right. Insert the thread by following steps 1 to 11. Note: To facilitate threading, use the twee zers included in the accessory box.
Lay the thread from back to front over the right-hand side of the looper. Carefully pull the thread to the left and slightly down until it slips into notch B (= threading point 10) of the looper. Insert the thread from the front through the eye of lower overedge looper C (= threading point 11).
Threading 16 2-thread chainstitch looper (violet) Turn the handwheel in the direction of the arrow until the 2-thread chainstitch looper (18) is positioned at the extreme right. Insert the thread by following steps 1 to 11. Note: To facilitate threading, use the twee zers included in the accessory box.
Exception: Insert the thread along the path marked in pink through thread guides 4 to 12. Pull about four inches (10 cm) of thread through the looper and lay it to the left un derneath the presser foot. The thread guide 8 may only be used, when sewing the cover stitch.
Threading 18 Right and left overlock needle, Needle A and B (green and blue) Insert the thread by following steps 1 to 10. Note: To facilitate threading, use the twee zers included in the accessory box. Note: The thread must run below the thread Pull about four inches (10 cm) of thread guide 7 and above the thread guides.
Threading Note: The thread must run above thread guides 5 and 6. 2-thread chainstitch needle and cover-stitch needle Needles C and D (blue and green) Insert the thread following steps 1 to 8. Note: To facilitate threading, use the twee zers included in the accessory box.
The needles must always be threaded last so that the needle threads do not run under the looper thread as seen in drawing 1, but instead over the looper thread as depicted in drawing 2. Should this sequence not be followed, thread breakage or missed stit ches will occur.
The pre-set presser foot pressure on the machine is suitable for medium-heavy ma terials. The presser foot pressure does not need to be changed for most materials.
Changing the presser foot Switch off the electrical power To remove: Raise the needle(s) to the hig hest position and lift the presser foot. Press the white lever at the rear of the presser foot holder. The sewing foot will be released automatically from the holder and can be removed to the left.
Disengaging the upper blade Switch off the electrical power Raise upper blade (23) to its uppermost po sition by rotating the handwheel. Detach the trimming waste container and open the loo per cover. Now slide the holder of the mo vable upper blade fully towards the right.
The converter must be fitted for all 2-thread seams, for the 2-needle, 3-thread overedge closing seam and for the 4-thread safety- stitch seam. Detach the trimming waste container and open the looper cover. Con verter (7) is located in the front of the ma chine housing.
25 Setting the bed slide for the stitch width latch For standard overlock seams: Set the bed slide for stitch width latch (21) to position S. Stitch width latch A will be pushed forward.
Remove trimming waste container. The seam width can be continuously adjusted as desired from 1/8 to 3/16 inch (3.0 mm to 4.5 mm> by turning the seam width adjustment knob (20). The 2-thread chainstitch is sewn with an interval from 1/8 to 3/16 inch (3.
Setting the stitch length The stitch length can be set as desired from F (4 1 mm> to 4 mm by turning stitch length adjustment knob (35). For most sewing work, the stitch length ad justment knob should be set at 3 mm. When working with close-knit fabrics, set the ad justment knob to 4 mm.
Differential feed If differential feed adjustment lever (34) is set to 0.5, the front feed dog moves half as fast as the rear feed dog, i.e. the front feed dog feeds through only half as much fabric as the rear feed dog. As a result, the fabric is stretched.
ther Inc (tin tnd iu nt al alec- Set differential feed adjustment lever (34) to 2.0 so that the front feed dog moves twice as fast as the rear feed dog, i.e. the front feed dog feeds through twice as much fa bric as the rear feed dog. As a result, the fabric is gathered.
Adjusting the machine to the cover stitch and two-thread chainstitch. Switch off eIectrica power For cover stitch: Turn the handwheel in the direction of the arrow until the needle(s) is in the highest position. Remove the standard presser foot (see page 22).
ot For two-thread chainstitch: Turn the handwheel in the direction of the arrow until the needle(s) are in the highest position. Insert two-thread chainstitch need le C(see page 11). Remove the trimming waste container and open the looper cover (the bed slide for the stitch width latch is set at S).
For cover stitch and two-thread chainstitch: Remove blade guard (9) upward. Push the power table, from the accessory box, from above into the slot of the looper cover. Screw the edge guide tight onto the power table beforehand. Close looper cover. Note: It is absolute necessary to disengage the upper overedge looper, when attaching the power table.
stitch: the are in e to t at ge of rding For cover stitch and two-thread chainstitch: On completing cover stitch or chainstitch, set the machine in the basic position as fol lows: Open the looper cover and remove the po wer table upward.
The power table is marked with various units of measurement. The figures on the left are in mm and those on the right are in inches. These values show the distance to the need le, when the stitch width is set at 3.5 mm. Raise the presser foot and place the fabric under the presser foot so the needles pierce the fabric for the first stitch.
st a sr Sew 4 - 5 stitches on top of each other. Du ring the last stitch, turn the handwheel to wards you until the needles pierce the fabric and you have heard each needle “click” (just before the needles are in the lowest position). After the second “click” turn the handwheel back, until the needles are in the highest po sition.
Thread tension Stitch- Stitch- Position Converter The values refer to medium-heavy fabrics and length width of bed slide • = with normal polyester thread for stitch width E = with- latch out blue preen pink yellow violet - 1.5 -1.5 -1.5 3-4 4.5 R -1.
Program summary Programs Application Needle position stitches Cover-stitch seam Sewing hems and ornamental [ I 5-thread safety-stitch seam Joining and serging of tightly 1 woven fabrics simultaneously ç L-o 4-thread safety-stitch seam Joining and serging of tightly woven fabrics simultanously I w [.
Thread The val normal blue N - 4.5 -4 38.
2 39.
Application Serging lightweight fabrics. As flatlock seam for sewing stretch fabrics together. Serging delicate fabric. Decora tive finished edges. Sewing together and simultane ous serging of lightweight, highstretch fabrics.
I I Thread tension Stitch- Stitch- Position Converter The values refer to medium-heavy fabrics length width of bed slide • = with and normal polyester thread for stitch width LI = with- latch out blue green pink yelllow violet -4 -O5 3 3.5 S N -4 3 3.
a Adjusting the thread tension The following pages contain directions for setting thread tensions for all programs. Adjust the tension by turning the tensioning wheel until the dot marker is at the desired setting. The settings for adjusting thread tension are recommendations.
The needle threads (green and blue) are too tight and the material puckers. Set the green and blue thread tension to a lower value. blue green pink yellow violet -1.
blue green pink yellow violet -1.5 +3 When all tension units are correctly set, the needle thread blue is just slightly visible on the lower edge of the fabric. blue green pink yellow violet N -2 -2 -2 When all tension units are correctly set, the loops of both looper threads (pink and yel low) are directly on the edge of the fabric.
Set the green thread tension to a higher va lue. The lower looper thread (yellow> appears on the top side of the material. Set the yellow thread tension to a higher va lue and/or the pink thread tension to a lower value. 45 The left needle thread (blue> is too loose.
• blue green pink yellow violet wide N -3 -1.5 Set the relevant needle thread tension to a higher value. The lower looper thread (yellow> appears on the top side of the fabric. Set the yellow thread tension to a higher va lue and/or the pink thread tension to a lower value.
The needle thread is too loose. Increase the tension of the respective need le thread. The lower looper thread (yellow) is visible on the face side of the fabric. Set the yellow thread tension to a higher va lue and/or the pink thread tension to a lower value.
. green pink yellow violet wide . -1 +3 blue green pink yellow violet narrow -4.5 N +2 lue. lue. 3Thread Decorative Serging Seam The needle thread is too loose.
The right needle thread (green) is too loose. Set the green thread tension to a higher va lue. The lower looper thread (yellow) is visible on the top side of the fabric. Set the yellow thread tension to a higher va lue and/or the pink thread tension to a lower value.
blue green pink yellow violet -1 -1 +3.5 The upper looper thread (pink) only partly loops around the edge of the fabric. Set the pink thread tension to a lower value and/or the yellow thread tension to a higher value. The right needle thread (green> is too loose.
2-Thread Overedge Seam, FLATLOCK blue I green I pink yellow I viole I wide I I I I — I I I —1.5 I PoH blue I green I pink yellow violet I I I -0.5 Note: Attach the converter (see page 24), when sewing the 2-thread overedge seam (FLATLOCK). The needle thread is too loose or the lower looper thread (yellow) is too tight.
2-Thread Roiled Hem L wide j blue I green I pink 1 yellowI violet I N - I blue I green I pink Iyellow I violet I narrow I I N I-I I Note: Attach the converter (see page 24) when sewing 2-thread serging seams.
2-Thread Rolled Hem blue green pink yellow violet -3.5 -1 Note: Attach the converter (see page 24) when sewing 2-thread rolled hems. The right needle thread Igreen) is too tight. Set the green thread tension to a lower va lue and/or the yellow thread tension to a higher value.
Folded 2-Thread Rolled Hem blue green pink yellow violet -1 -1.5 Note: Attach the converter (see page 24) when sewing folded 2-thread rolled hems. The right needle thread (green) is too loose. Set the green thread tension to a higher va lue and/or the yellow thread tension to a lo wer value.
blue green pink yellow violet 1 2 4 Note Attach the converter (see page 241 when sewing the 2-needle, 3-thread overed e closing seam. The lower looper thread (yellow> is too tight. Set the yellow thread tension to a lower va lue. 55 2-Needle, 3-Thread Overedge Closing Seam The left needle thread (blue> is too loose.
Lubricating the machine Switch off the electrical power Move the upper overedge looper into its highest position. Lubricate the point shown above with the oil provided in the accessory box every time you clean the machine. One or two drops of PFAFF sewing machine oil are sufficient.
Changing the lower blade Switch off the electrical power To remove: Detach the trimming waste box and open the looper cover. Disengage the upper blade and move the needle(s) to the highest position. Use the large screwdriver from the accessories to loosen lower blade retaining screw A.
14 Changing the light bulb (sewing light) Switch off the electrical power Use the large screwdriver from the accesso ries to loosen the retaining screw of sewing light cover (15) until it can be removed. Push the light bulb fully into its socket. Ro tate anti-clockwise through half a turn and remove.
pecial accessories n the following pages you will find descriptions of all sewing feet available as special ac ssories to help you to get the best from your coverlock 4772. By using these presser feet, can perform various steps in one, thus saving time and ensuring perfect serging results.
Blindstitch foot The blindstitch foot is ideal for professiei. sewing of invisible seams on medium-hr vy and thick fabrics. The seam is trimmer’ serged and “blind” stitched in a single (Jr ration. Setting the machine Remove the left needle. Set your machr 3-thread overedge seam (narrow> and r-’i stitch length 4.
Cover-stitch guide set You can hem T-shirts, sweatshirts etc. with this accessory set. Setting the machine Set the machine to the cover stitch (see page 30 - 33). Note: Use guide C and D. Working: Loosen the needle plate screw by half a turn and open the looper cover.
Cover-stitch guide set Open-edged seams on T-shirts, sweatshirts, etc., can be bound with bias tape or band. Setting the machine Set the machine to the cover stitch (see page 30 - 33>. Note: Use guides B and C. Working: Place guide C, as shown in the illustration, onto the cover-stitch foot and tighten this using the small screw and washer.
Cover-stitch guide set Seams can be top-stitched with this special accessory. Setting the machine Set the machine to the cover stitch (see page 30 - 33>.
Gimp thread foot This presser foot is used for sewing in gimp threads (cords, synthetic threads) up to a thickness of 1.0 mm. It creates a wavelike hem finish in delicate fabrics e.g. for eve- fling dresses and bridal gowns of curtains. Setting the machine Set your machine to the folded 3-thread rol led hem.
Elastic tape foot This presser foot is used for sewing on elastic tape. In the same operation, the fa bric is trimmed and serged, and also gathe red by the contracting elastic tape. Setting the machine Set your machine to the 4-thread overedge seam. The seam width is determined by the width of the elastic tape.
Shirring foot The shirring foot enables two fabrics to be sewn together, whereby the bottom ply is automatically gathered. It is ideal for chil dren’s wear, as well as attaching gathered valances for curtains, table linen or tiered skirts. Setting the machine Set your machine to the 4-thread overedge seam and the differential feed to 2.
Cording foot This sewing foot allows you to sew together two fabric plies with a cording tape between them, in one operation. Ideal for casual wear, sports bags and upholstery covers. Setting the machine Set your machine to the 4-thread overedge seam and seam width 4.
Beading foot This presser foot is used for sewing on bea ding sequins and strass bands as well as lead and ordinary cords. Setting the machine Set your machine to the 3-thread overedge seam (narrow or.
Lace foot The lace foot enables you to sew lace and wide bands together or onto another work- Setting the machine Set your machine to 3-thread overedge seam (narrow) and select a stitch length bet ween F and 2. Working: Raise the needle to its uppermost position and insert the lace sewing foot.
Thread chart for 2-, 3- and 4-thread overedge seams Fabric Thread Stitch length Light fabrics: organdy, fine knitwear, Cotton no. 50 - 70 2.0 - 4.0 mm taffeta, silk, lining fabrics Synthetic thread no. 70- 140 Medium-heavy fabrics: coton, tricot Cotton no.
i.
Sewing problems and their solutions These machines have been developed with ease of operaticn in mind. No difficult or tricky settings need to be made. Sewing problems of the kind described below may occur as a re sult of minor adjustment and operating errors.
Problem Cause Solution Machine will not Power supply interrupted. Close looper cover operate although (see page 8>. master switch is on fabric not neatly Waste thread between Clean blades. trimmed, upper and lower blade. Lower blade is blunt. Replace lower blade (see page 57>.
Specifcations: Maximum sewing speed 1300 stitches/mm. Seam width 3 - 6.7 mm Stitch length F (= 1 mm) - 4 mm Presser foot exchangeable Lubrification manual Presser foot height 4.
Parts of the coverlock 4772 (24) Thread guides with color coding (25) Regulator screw for presser foot pressure (26) Telescopic thread guide (27) Thread chain cutter (28) Thread spool stand (29) Threa.
017 6e /1 o€:.
G. M. Pfaff Aktiengesellschaft Werk Karisruhe-Durlach GritznerstraIe 11 76227 Karlsruhe Printed in Germany IJruckerei Gablenz GmbH 76356 Weingarten, Stettiner Strafte 17 Information subject to change without notice Nr.
An important point after buying a device Pfaff coverlock 4772 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Pfaff coverlock 4772 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Pfaff coverlock 4772 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Pfaff coverlock 4772 you will learn all the available features of the product, as well as information on its operation. The information that you get Pfaff coverlock 4772 will certainly help you make a decision on the purchase.
If you already are a holder of Pfaff coverlock 4772, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Pfaff coverlock 4772.
However, one of the most important roles played by the user manual is to help in solving problems with Pfaff coverlock 4772. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Pfaff coverlock 4772 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
