Pfaff coverlock 4852 Owner's Manual
Pfaff coverlock 4852 Manual
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- Pfaff coverlock 4852 | Owner's Manual - Page 1
coverlock 4852 Owner´s manual - Pfaff coverlock 4852 | Owner's Manual - Page 2
- Pfaff coverlock 4852 | Owner's Manual - Page 3
Parts of the coverlock 4852 1 Upper needle-thread tension 2 Upper needle-thread tension 3 Carry handle 4 Thread tension/upper looper thread 5 Thread tension/lower looper thread 6 Thread tension/two-thread chainstitch looper/cover stitch looper 7 Looper cover 8 Blade guard 9 Looper disengaging lever - Pfaff coverlock 4852 | Owner's Manual - Page 4
- Pfaff coverlock 4852 | Owner's Manual - Page 5
area, such as threading needle, changing needle, threading bobbin, or changing presser foot, etc. • Always unplug sewing machine from the electrical outlet when removing covers, lubricating, or when making any other user servicing adjustments mentioned in the instruction manual. • Never drop or - Pfaff coverlock 4852 | Owner's Manual - Page 6
- Pfaff coverlock 4852 | Owner's Manual - Page 7
that provides unique advantages. Your new coverlock 4852 can take any material in its stride and will sew through thick and thin for you. Your PFAFF coverlock features the very latest in design and technology, and it is just as simple to operate as this instruction manual is to follow. Before you - Pfaff coverlock 4852 | Owner's Manual - Page 8
38 Needle plate, removing 38 Needle position ...12 Needle threader ...25 Needle, changing ...13 Power table ...35 Presser foot lifter ...10 Presser foot pressure 28 Presser foot ...11 Presser foot, changing 11 Program overview ...40 - 43 Rubber feet, cleaning 58 Safety instructions...1, 2 eam - Pfaff coverlock 4852 | Owner's Manual - Page 9
Sewing problems and their solutions 61 Specifications ...64 Spool dise ...10 Spool holder ...9 Stitch formation correction measures 46 - 56 Stitch length adjustment knob 38 Stitch length, adjusting 38 Stitch width latch, swivelling 31 Telescoping thread guide 9 Thread chain cutter ...29 Thread - Pfaff coverlock 4852 | Owner's Manual - Page 10
inwards. The following accessories can be found in the box: 1 Thread nets (5) 2 Overlock needle system EL X 705, cat. no. 2002 3 Thread unreeling discs (5) 4 Transparent presser foot (F) for cover stitch and two thread chainstitch 5 Clip on thread guide 6 Cleaning brush 7 Screw driver 8 Machine oil - Pfaff coverlock 4852 | Owner's Manual - Page 11
of the machine. The sewing speed is regulated by activating the foot control. You may also regulate the sewing speed by adjusting the slide on the front side of the foot control. Setting 3 = half of final speed Setting 8 = full final speed Electrical connection Connect the foot control cord with the - Pfaff coverlock 4852 | Owner's Manual - Page 12
or swivel plate 12 is opened, for safety reasons, i.e. sewing with the machine is no longer possible. Waste container Insert the upper latch of the waste container 45 into the upper slot of the looper cover 7. Apply pressure to the lower part of the container until the lower latches flick into place - Pfaff coverlock 4852 | Owner's Manual - Page 13
feed, turn the telescopic parts slowly until you hear the locking balls flick into place. Thread net Synthetic threads generally unwind too quickly from the thread spool. Thread nets have been included to allow easy use of these threads. Pull the thread net (located in the accessory box) over the - Pfaff coverlock 4852 | Owner's Manual - Page 14
Clip on thread guide Use the clip on thread guide accessory when sewing with decorative thread. Clip this onto the telescoping thread guide 32 and thread the machine as shown in the illustration. Use the thread net and/or the thread unreeling disc if needed. Presser foot lifter The presser foot can - Pfaff coverlock 4852 | Owner's Manual - Page 15
. 09) and the 4 thread safety stitch seam (Prog. 08). Transparent presser foot F from the accessories can also be used for the cover stitch (Prog. 02). For all other programs use standard presser foot 10 and setting "B" on the springloaded presser foot latch. Changing the presser foot Switch off the - Pfaff coverlock 4852 | Owner's Manual - Page 16
This machine has 4 needle positions and can sew with a maximum of two needles at any one time. The needle positions are 1 1, L2, R11 and R2. The fastening screw is located directly above the corresponding needle. The different needle positions are depicted in a schematic drawing in the instruction - Pfaff coverlock 4852 | Owner's Manual - Page 17
power To remove: Lower the presser foot and move the needle(s) to the highest position by turning the handwheel towards you. Push the needle inserting tool (from the accessory box 49) from below upward fully over the needle. Loosen the fastening screw of the needle (without removing it) with the - Pfaff coverlock 4852 | Owner's Manual - Page 18
through the underside of the carrying handle and through the rear thread guides 44 using both hands to pull the thread down until it slips under the thread guide. Guide the thread through the tension discs and pull it down until it is positioned firmly between the tension discs. Return the carrying - Pfaff coverlock 4852 | Owner's Manual - Page 19
can be found behind the swivel plate. Thread through the thread guides 1 to 7, which are marked with a pink dot. Thread from the front through the eye of the upper overedge looper 8. Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot. 17 - Pfaff coverlock 4852 | Owner's Manual - Page 20
Threading the lower overedge looper (yellow) Turn the handwheel towards you until the lower overedge looper 19 is on the extreme right. Thread in a sequence of 1 to 10. Note: To make this task easier, use the tweezers which can be found behind the swivel plate. 18 - Pfaff coverlock 4852 | Owner's Manual - Page 21
below. Note: The lever returns automatically to its position as soon as you start sewing. Thread from the front through the eye of the lower overedge looper C (= threading point 10). Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot. 19 - Pfaff coverlock 4852 | Owner's Manual - Page 22
chainstitch looper and cover stitch looper (violet) for the chainstitch Turn the handwheel towards you until the two thread chainstitch looper 20 is on the extreme right. Thread in a sequence of 1 to 11. Note: To make this task easier, use the tweezers which can be found behind the swivel plate. 20 - Pfaff coverlock 4852 | Owner's Manual - Page 23
automatically to its position as soon as you start sewing. Thread from the front through eye C of the two thread chainstitch looper and the cover stitch looper (= threading point 11). Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot. 21 - Pfaff coverlock 4852 | Owner's Manual - Page 24
looper and cover stitch looper for the cover stitch (violet) (Prog. 02) Turn the handwheel towards you until the two thread chainstitch looper 20 is on the extreme right. Thread in a sequence of 1 to 10. Note: To make this task easier, use the tweezers which can be found behind the swivel plate. 22 - Pfaff coverlock 4852 | Owner's Manual - Page 25
automatically to its position as soon as you start sewing. Thread from the front through eye C of the two-thread chainstitch looper and the cover stitch looper (= threading point 10). Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot. 23 - Pfaff coverlock 4852 | Owner's Manual - Page 26
: To make this task easier, use the tweezers which can be found behind the swivel plate. The thread must be guided through the lower slot of thread guide 4. Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot. Note: For the cover stitch the - Pfaff coverlock 4852 | Owner's Manual - Page 27
in a sequence of 1 to 9. Note: To make this task easier, use the tweezers which can be found behind the swivel plate. The thread must be guided through the upper slot of thread guide 5. Pull approximately 4" (10 cm) of thread through the looper and place it to the left under the presser foot . 25 - Pfaff coverlock 4852 | Owner's Manual - Page 28
new spools. Tie together the threads which are still in the machine with the new threads, and pull the threads out of the needle eyes. Raise the presser foot. Pull on the needle threads until the knots are about 6 inches (15 cm) past the last thread guide in front of the needles. Cut the knots off - Pfaff coverlock 4852 | Owner's Manual - Page 29
and lower the presser foot. Place the thread from right to left in notch A of the needle threader (to be found in the accessory box). One of the two triangles must point upwards. Place the needle threader onto the front groove of the needle. Slide the needle threader down to the needle eye and press - Pfaff coverlock 4852 | Owner's Manual - Page 30
Overview of the threading paths and threading sequences Program 01: 2-thread chainstitch Program 02: cover stitch Program 03: 2-thread flatlock, narrow Program 11: 2-thread serging, narrow Program 12: 2-thread rolled hem Program 13: folded 2-thread rolled hem 28 Program 04 2-thread flatlock, wide - Pfaff coverlock 4852 | Owner's Manual - Page 31
of the threading paths and threading sequences Program 05: 3-thread overedge. narrow Program 14: 3-thread rolled hem Program 15: folded 3-thread rolled hem Program 16 3-thread flatlock, narrow Program 06: 3-thread overedge, wide Program 17: 3-thread serging, wide Program 18: 3-thread flatlock, wide - Pfaff coverlock 4852 | Owner's Manual - Page 32
Overview of the threading paths and threading sequences Program 09: 5-thread safety-stitch seam Program 10: 2-needle 3-thread assembly seam Presser foot pressure The pre-set presser foot pressure on the machine is suitable for medium heavy fabrics. The presser foot pressure does not need to be - Pfaff coverlock 4852 | Owner's Manual - Page 33
against the front of the needle(s). If necessary, make an approx. 1.5" (3 cm) cut into the fabric along the cut line using a pair of scissors. Lower the presser foot and start sewing. The thread chain pulls automatically into the inside of the seam. Note: This feature cannot be used for either the - Pfaff coverlock 4852 | Owner's Manual - Page 34
Disengaging the upper blade Switch off the electrical power Move the movable upper blade 23 into its highest position by turning the handwheel towards you. Remove the waste container and open the looper cover and the swivel plate. Push the knob for lowering the upper blade 27 fully to the right. To - Pfaff coverlock 4852 | Owner's Manual - Page 35
Swiveling stitch width latch For standard overlock seams: The swiveling stitch width latch 22 remains in the basic position when sewing all types of standard overlock seams (exception: Program 01, 02). For rolled hems: Pull knob (A) to the right and swivel the swiveling stitch width latch 22 - Pfaff coverlock 4852 | Owner's Manual - Page 36
Attaching the converter Switch off the electrical power The converter 28 must be attached for all two thread seams (exception: Program 01) and the two needle three thread assembly seam. Open the swivel plate and remove the converter 28 from its storage place. Position the upper overedge looper 18 - Pfaff coverlock 4852 | Owner's Manual - Page 37
on the dial refers to the seam width of a standard 3 thread overedge seam. The width settings 3.5 mm through 6.0 mm are measured from needle R1 to the outer fabric edge. This width is decreased by 2.0 mm when only using needle R2, i. e. you have a seam width that is completely adjustable from - Pfaff coverlock 4852 | Owner's Manual - Page 38
Adjusting the machine to the cover stitch (Prog. 02) and two thread chainstitch (Prog. 01) This is only necessary if you do not want to trim the fabric edge. Insert the needle(s) (see page 13) according to the overview of the threading paths and threading sequences (see page 26). Open the looper - Pfaff coverlock 4852 | Owner's Manual - Page 39
that the upper overedge looper is disengaged before attaching the power table 50. To return the machine to its previous settings after sewing with the cover stitch or two thread chainstitch: Open the looper cover and remove the power table. Move the looper disengaging lever to the right, thus re - Pfaff coverlock 4852 | Owner's Manual - Page 40
the other, which feed the fabric. The movement of the front feed dog (A) and thus the amount of material to be fed can be regulated using the regulator wheel 41. The setting range is between 0.5 and 2.0. The standard setting is 1.0, where the movement of the front feed dog (A) is synchronized with - Pfaff coverlock 4852 | Owner's Manual - Page 41
be achieved. You can also achieve decorative effects with the differential feed dog. For example the gathering effect when using very light fabrics (B). The following table contains information on the differential feed settings. However, you should always test your setting first on a piece of scrap - Pfaff coverlock 4852 | Owner's Manual - Page 42
mm to 4.0 mm by turning the stitch length adjustment knob (42). Note For the two thread chainstitch, the setting should be 3.0 or higher. Removing the needle plate Raise the presser foot and move the needle(s) to the highest position. Remove the presser foot and open the swivel plate. Press down the - Pfaff coverlock 4852 | Owner's Manual - Page 43
the needle(s) to its highest position and open the swivel plate. Tighten the screw fully using the Allen key. This screw should always be slightly loosened again after sewing heavy fabrics. Note: The seam width can no longer be adjusted once the upper blade is secured. Setting thread tension The - Pfaff coverlock 4852 | Owner's Manual - Page 44
seam is required. Also works well as a basting stitch for test fitting garments. Sewing hems and fancy stitches. Needle Stitch Stitch position length width 3-4 3.5 3-4 3.5 Program 03 2-thread flatlock, narrow Serging light fabrics. Joining stretch fabrics with a flatiock seam. 2 5.5 Program - Pfaff coverlock 4852 | Owner's Manual - Page 45
Stitch width latch 22 ■ = top ® = bottom Looper disengaging level 9 Power table 50 ● = with ° = without Converter 28 ■ = with ® = without Thread tension The value refer to medium-heavy fabrics and normal polyester thread blue green pink yellow violet ® ▼ ● 5.0 ® 2.0 ® ▼ ● ® 6.0 6.0 - Pfaff coverlock 4852 | Owner's Manual - Page 46
Program Program 10 2-needle, 3-thread assambly seam Application Needle position Joining and simultaneous serging of light, very stretchy fabrics. Stitch length 2 Stitch width 5.5 Program 11 2-thread serging, narrow Serging light fabrics. 1.5 5.5 Program 12 2-thread rolled hem Serging very - Pfaff coverlock 4852 | Owner's Manual - Page 47
Stitch width latch 22 ■ = top ® = bottom Looper disengaging level 9 Power table 50 ● = with ° = without Converter 28 ■ = with ® = without Thread tension The value refer to medium-heavy fabrics and normal polyester thread blue green pink yellow violet ■ ▲ ° ■ 5.0 4.0 1.0 ■ ▲ ° ■ 4.0 - Pfaff coverlock 4852 | Owner's Manual - Page 48
width at 3.5 cm. To start sewing: Raise the presser foot and place the fabric under the presser foot so the needles pierce the fabric for the first stitch. Position the fabric at the desired width using the marked guidelines on the power table. When starting to sew, pull the fabric taut towards the - Pfaff coverlock 4852 | Owner's Manual - Page 49
the presser foot (this will release the tension on the threads). Hold the threads tightly at the end of the seam and pull the fabric from the machine. Cut the threads. Pull the threads through to the back of the fabric and knot them. Edge guide Push the edge guide (included in your accessory box - Pfaff coverlock 4852 | Owner's Manual - Page 50
cover stitch Program 02 When all tensions are correctly set, the needle threads (green and blue) are just slightly visible on the underside of the fabric. The looper thread (violet) is situated loosely in between. The right needle thread (green) is too loose, causing large loops on the underside of - Pfaff coverlock 4852 | Owner's Manual - Page 51
see page 32), when sewing a 4-thread safety stitch seam. 2-thread chainstitch Program 01 When all tensions are correctly set, the needle thread (blue) is just slightly visible on the underside of the fabric. The needle thread (blue) is too loose, causing larger needle thread loops on the underside - Pfaff coverlock 4852 | Owner's Manual - Page 52
overedge seam Program 07 When all tensions are correctly set, the loops of both looper threads (pink and yellow) are directly on the edge of the fabric. The needle threads (blue and green) are too loose, causing larger loops of needle thread on the underside of the fabric. Set the blue and green - Pfaff coverlock 4852 | Owner's Manual - Page 53
on the edge of the fabric. The needle thread is too loose, causing loops on the underside of the fabric. Set the relevant needle thread tension to a higher value. The upper looper thread (pink) appears on the underside of the fabric. Set the pink thread tension to a higher value and/or the - Pfaff coverlock 4852 | Owner's Manual - Page 54
and wide Program 16 and 18 The needle thread is too tight. Set the needle thread tension (blue) to a lower value. The upper looper thread (pink) appears on the underside of the fabric. Set the pink thread tension to a higher value. The lower looper thread (yellow) is too loose. Set the yellow - Pfaff coverlock 4852 | Owner's Manual - Page 55
to sew the 2-thread flatlock seam. The needle thread is too loose or the lower looper thread (yellow) is too tight. Set the relevant needle thread tension to a higher value and/or the yellow thread tension to a lower value. The lower looper thread (yellow) is too loose and/or the needle thread is - Pfaff coverlock 4852 | Owner's Manual - Page 56
rolled hem Program 14 The upper needle thread (green) is too loose. Set the green thread tension to a higher value The upper looper thread (pink) appears on the underside of the fabric. Set the pink thread tension to a higher value and/or the yellow thread tension to a lower value. The lower - Pfaff coverlock 4852 | Owner's Manual - Page 57
hem (folded) Program 15 The upper needle thread (green) is too loose. Set the green thread tension to a higher value. The upper looper thread (pink) only partly loops around the fabric edge. Set the pink thread tension to a lower value and/or the yellow thread tension to a higher value. The lower - Pfaff coverlock 4852 | Owner's Manual - Page 58
page 32) must be attached to sew the 2 thread rolled hem. The upper needle thread (green) is too tight. Set the green thread tension to a lower value and/or the yellow thread tension to a higher value. The lower looper thread (yellow) is too tight. Set the yellow thread tension to a lower value and - Pfaff coverlock 4852 | Owner's Manual - Page 59
32) must be attached to sew the 2 thread rolled hem. The upper needle thread (green) is too loose. Set the green thread tension to a higher value and/or the yellow thread tension to a lower value. The lower looper thread (yellow) is too loose. Set the yellow thread tension too a higher value. 57 - Pfaff coverlock 4852 | Owner's Manual - Page 60
Note: The converter (see page 32) must be attached to sew the 2-needle 3-thread assembly seam. The lower needle thread (blue) is too loose. Set the blue thread tension to a higher value. The upper needle thread (green) is too loose. Set the green thread tension to a higher value. The lower looper - Pfaff coverlock 4852 | Owner's Manual - Page 61
organdy, fine knitwear, taffeta, silk, lining fabrics Cotton no. 50 - 70 Synthetic thread no. 70 - 140 2.0 - 4.0 mm Medium heavy fabrics: cotton, tricot, linen, dress fabrics Cotton no. 40 - 60 Synthetic thread no. 70 - 140 2.0 - 4.0 mm Heavy fabrics: tweed, suit fabrics, denim, heavy cloth - Pfaff coverlock 4852 | Owner's Manual - Page 62
the upper blade (see page 30) and remove the presser foot and the needle plate. Use the accessory brush provided to remove any waste thread from the upper and lower blades, the differential feed and the looper area. Lubricating the machine Switch off the electrical power Move the upper overedge - Pfaff coverlock 4852 | Owner's Manual - Page 63
knob for seam width to 3.5 mm. Fasten the upper blade (see page 39) before loosening the fastening screw (A) with the wrench provided in the accessory box. Then remove the upper blade. To insert: Attach the new upper blade and gently tighten the fastening screw. Then turn the handwheel until the - Pfaff coverlock 4852 | Owner's Manual - Page 64
bulb Switch off the electrical power Using the screw driver in the accessory box loosen the fastening screw to the sewing light cover 16 until the cover can be removed. Push the light bulb fully into its socket. Rotate counter clockwise through half a turn and remove. Guide the new light bulb (max - Pfaff coverlock 4852 | Owner's Manual - Page 65
(see page 13). Do not pull on the fabric when sewing. Thread breaks Incorrectly threaded. Thread has caught. Thread tension is too tight. Needle not fully insert. Incorrect needle used. Thread properly (see page 14 - 23). Check if the thread is caught on the spool stand etc. Correct the tension - Pfaff coverlock 4852 | Owner's Manual - Page 66
. Guide for sewing flat-felled seams. Use transparent presser foot F from the accessory box. For serging pintucks with the cording tomgue K1 and the guide K2 Cording tongue Kl 29 924 993 82-012 For serging pintucks. Cording guide K2 29 924 993 82-010 For serging pintucks with gimp thread. Strap - Pfaff coverlock 4852 | Owner's Manual - Page 67
924 993 82-020 29 924 993 82-028 For sewing on bands and braiding. Gimp cords and thread and bands with decorative threads can be stitched over using this foot together with guide K2. Presser foot for guiding and sewing in piping and welting. Accessory holder Retaining screw 29 924 993 82-021 29 - Pfaff coverlock 4852 | Owner's Manual - Page 68
length Presser foot Lubrication Presser foot height Overedge stroke Needle system Needle siw Number of threads Dimensions (width x height x depth) Weight Packing contents 1 machine 1 foot control 1 instruction manual/guarantee card 1 waste container 1 machine cover 1 accessory box 1 power table - Pfaff coverlock 4852 | Owner's Manual - Page 69
Intellectual property Patents protecting this product are listed on a label positioned underneath the sewing machine. PFAFF and IDT (image) are registered trademarks or trademarks of VSM Group AB. - Pfaff coverlock 4852 | Owner's Manual - Page 70
power master switch 39 Machine socket, foot control 40 Handwheel 41 Regulator wheel for differential feed 42 Stitch length adjustment knob 43 Presser foot lifter 44 Rear thread guides 45 Waste container 46 Foot control 47 Foot control plug for machine 48 Power cord 49 Accessory box 50 Power table - Pfaff coverlock 4852 | Owner's Manual - Page 71
- Pfaff coverlock 4852 | Owner's Manual - Page 72
VSM Group AB • SE-561 84 Huskvarna • SWEDEN www.pfaff.com 29 629 000-20D • English • Inhouse • © 2004 VSM Group AB • Printed in Sweden on environmental-friendly paper
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Owner´s manual
coverlock 4852