Pfaff coverlock 4852 User Manual
coverlock 4852
Owner´s manual
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
10 Standard presser foot
11 Needle plate
12 Swivel plate
13 Adjusting knob for seam width
14 Seam width viewing window
15 Needle holder
16 Sewing light cover
17 Adjusting knob for presser foot pressure
18 Upper overedge looper
19 Lower overedge looper
20 Two-thread chainstitch looper
21 Threading aid for the two-thread chainstitch looper/cover stitch
looper
22 Swiveling stitch width latch
23 Movable upper blade
24 Fixed lower blade
25 Clamp spring for serging thread chains
26 Needle plate disengaging lever
27 Handwheel for lowering the upper blade
28 Converter
29 Tweezers
30 Allen key
This household sewing machine is designed to comply with IEC/EN 60335-2-28 and UL1594
IMPORTANT SAFETY INSTRUCTIONS
When using an electrical appliance, basic safety precautions should always be followed,
including the following:
Read all instructions before using this household sewing machine.
DANGER - To reduce the risk of electric
shock:
• A sewing machine should never be left unattended when plugged in. Always unplug this
sewing machine from the electric outlet immediately after using and before cleaning.
• Always unplug before relamping. Replace bulb with same type rated 15 Watt.
WARNING - To reduce the risk of burns, fi re,
electric shock, or injury to persons:
• Do not allow to be used as a toy. Close attention is necessary when this sewing machine is
used by or near children and infi rm persons.
• Use this sewing machine only for its intended use as described in this manual. Use only
attachments recommended by the manufacturer as contained in this manual.
• Never operate this sewing machine if it has a damaged cord or plug, if it is not working
properly, if it has been dropped or damaged, or dropped into water. Return the sewing
machine to the nearest authorized dealer or service center for examination, repair, electrical
or mechanical adjustment.
• Never operate the sewing machine with any air openings blocked. Keep ventilation
openings of the sewing machine and foot controller free from the accumulation of lint, dust,
and loose cloth.
• Keep fi ngers away from all moving parts. Special care is required around the sewing
machine needle and blades.
• Always use the proper needle plate. The wrong plate can cause the needle to break.
• Do not use bent needles.
• Do not pull or push fabric while stitching. It may defl ect the needle causing it to break.
• Switch the sewing machine off (“0”) when making any adjustment in the needle 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 insert any object into any opening.
• Do not use outdoors.
• Do not operate where aerosol (spray) products are being used or where oxygen is being
administrated.
• To disconnect, turn all controls to the off (“0”) position, then remove plug from outlet.
• Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.
SAVE THESE INSTRUCTIONS
Simple, up-to-date sewing
Congratulations! You have bought a high-quality product 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 start sewing, please take the time to read these instructions
carefully. It is certainly time well spent, and is the best way to fi nd out just
what your machine can do and make full use of all its features.
If you have any further questions, just ask your authorized PFAFF dealer.
Your dealer is happy to be of service with any help or advice.
Lets get started! We wish you many enjoyable hours creating your very
own fashions and projects!
Contents
Page
Accessories ................................................................................................................6
Accessories, optional ................................................................................................62, 63
Accessory box .............................................................................................................6
Adjusting the machine to Prog. 01, 02 ...................................................................... 34, 35
Changing a spool on a threaded machine ............................................................... 24
Clamp spring ...............................................................................................................29
Cleaning the machine ................................................................................................. 58
Cone thread adapter ...................................................................................................10
Converter, attaching ................................................................................................... 32
Cover stitch, important notes on sewing .................................................................. 44, 45
Differential feed ..........................................................................................................36, 37
Edge guide .................................................................................................................45
Electrical connection .................................................................................................7
Electrical power master switch ................................................................................. 7
Foot control, connecting ........................................................................................... 7
Light bulb (sewing lamp), changing ........................................................................60
Loopercover ................................................................................................................ 8
Lubricating the machine ...........................................................................................58
Machine cover ............................................................................................................ 6
Maintenance ............................................................................................................... 58 - 60
Needle holder ............................................................................................................ 13
Needle inserting tool ................................................................................................. 13
Needle plate disengaging lever .................................................................................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 width adjusting knob ........................................................................................33
Seam width viewing window ................................................................................... 33
eam width, setting ..................................................................................................... 33
Sewing light cover .....................................................................................................60
6
Contents
Page
Sewing problems and their solutions ...................................................................... 61
Specifi cations .............................................................................................................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 chart ............................................................................................................... 57
Thread guide, clip on .................................................................................................. 10
Thread net ................................................................................................................... 9
Thread tensions, setting ............................................................................................. 39
Thread unreeling disc ................................................................................................. 9
Threading aid for the 2 thread chain stitch looped/cover stitch looped ............... 19, 21
Threading paths/overview ........................................................................................ 26 - 28
Threading the 2 thread chain stitch looped/cover stitch looped (violet) ..............18 - 21
Threading the lower overedge looper (yellow) ....................................................... 16, 17
Threading the needle(s) ............................................................................................ 22,23
Threading the upper overedge looper (pink) ........................................................... 15
Threading, important note ......................................................................................... 24
Threading/Thread guides ...........................................................................................14
Upper blade, changing ...............................................................................................59
Upper blade, disengaging ......................................................................................... 30
Upper blade, securing ............................................................................................... 39
Waste container ......................................................................................................... 8
7
Accessory box
Open the accessory box 49 by gently
pressing the bottom of the box 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
9 Needlethreader
10 Needle inserting tool
11 Wrench
12 Replacement upper blade
13 Edge guide
Further accessories
The following accessories can be found
behind the swivel plate 12:
1 Converter
2 Tweezers
3 Allen key
Machine cover
The machine cover protects the machine
from dust and dirt. When the sewing
process is fi nished, push the telescopic
thread guide 32 together. The spool stand
34 must be pushed to its full extent in to the
machine, regardless of whether a spool is
attached. Place the cover over the machine.
The accessories should be stored in the
accessory box or compartments behind the
swivel plate.
88
Connecting the foot control
Connect the plug of the foot control to the
connection socket 39 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 fi nal speed
Setting 8 = full fi nal speed
Master switch
When you turn on the master switch 38 the
sewing lamp is illuminated. The machine is
now operational.
Electrical connection
Connect the foot control cord with the wall
outlet.
Foot controls to be used:
AE040 - EU
AE044 - Australia
AE046 - United Kingdom
AE043 - USA/Canada
For the USA and Canada
This appliance has a polarized plug (one
blade wider than the other).
To reduce the risk of electric shock, it is
designed to fi t into a plorized outlet only one
way. If the plug does not fi t correctly into the
outlet, reverse the plug. If it still does not fi t,
contact a qualifi ed electrician to install the
proper outlet.
Do not modify the plug in any way.
99
Looper cover
Push the looper cover 7 fully to the right and
then swivel it down. Five types of stitches
and their threading paths are portrayed in
color on the inside of the looper cover.
Note: The electricity supply of the machine
is cut off as soon as the looper cover 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 fl ick into
place in the lower slots of the looper cover.
1010
To remove the waste container, repeat this
procedure in the reverse order.
Spool holder
Before placing thread cones/spools on
machine you must pull the spool holder 34
fully away from the back of machine.
Telescopic thread guide
Pull the telescopic thread guide 32 upwards
to its highest position.
To ensure optimum thread feed, turn the
telescopic parts slowly until you hear the
locking balls fl ick 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 spool from
below. Place the spool on the spool holder
catching the bottom of the thread net with
the spool pin.
Thread unreeling disc
The thread unreeling disc (in the accessory
box) is used for small spools/spools with
notched or rough ends. Place the spool on
the spool pin 35. Place the thread unreeling
disc on top of the spool. Make sure the spool
dise 37 is used under the spool.
1111
Spool disc/cone thread adapter
It is advantageous to use the spool dise
37 when sewing with large spools (5,000
10,000 m). To do this, place the cone thread
adapter 36 onto the spool pin 35. With
synthetic threads, the spool discs help
eliminate vibration of the cones/spools
aiding in smoother feeding of the threads.
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 be raised and lowered
using the presser foot lifter 43. The
maximum vertical lift of 6.5 mm for the
presser foot for particularly thick fabrics can
be achieved by pressing the presser foot
lifter towards the rear.
1212
Once an initial thread chain has been
created, the presser foot lifter no longer
needs to be raised if you continue working
with the same thread and presser foot. It is
suffi cient to gently lift the front part of the
presser foot using your thumb. Slide the
fabric under the raised part of the presser
foot. The fabric is automatically taken up and
fed into the machine when you activate the
foot control.
Presserfoot
With standard presser foot 10 use setting
”A” on the spring loaded presser foot latch
for the cover stitch (Prog. 02), the 2 thread
chainstitch (Prog. 01), the 5 thread safety
stitch seam (Prog. 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 electrical power
To remove: Raise the needle(s) to the
highest position by turning the hand wheel
towards you. Raise the presser foot and
press lever A at the rear of the presser foot
holder. The presser foot will be released
automatically from the holder. Pivot the
presser foot clockwise until the front half of
presser foot clears holder and remove by
sliding foot away from you towards back of
machine.
To attach: Place the presser foot behind and
perpendicular to the presser foot holder.
Pivot the presser foot counterclockwise
until the pin of the foot is directly under the
presser foot holder clamp. Lower the presser
foot lever and press lever A, if necessary,
until the foot then clicks into place.
Check: Please lift the presser foot lever to
ensure that the presser foot is properly
locked into place.
1313
Needle position
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.
Note: If the needles 1 11 and L2 have been
inserted, the left needle will be somewhat
lower than the right needle.
The different needle positions are depicted
in a schematic drawing in the instruction
manual. Also refer to the examples above
and below. Insert the needle(s) as shown on
the program overview (see pages 40-43).
Note: If the needles R2 and 131 have been
inserted, the left needle will be somewhat
higher than the right needle.
1414
Changing the needle
Switch off the electrical 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 Allen
key (behind the swivel plate) and pull the
needle down to remove.
To insert: Insert the needle into hole E of the
needle inserting tool, so that the fl at needle
shank K faces the fl at side L of the inserting
tool. Insert the needle fully into the holder
and tighten the fastening screws. Remove
the needle inserting tool.
Overlock needles types EL X 705, cat. no.
2002 are required for this machine.
1515
Threading the thread guides
Place the spools on the spool pins 35. You
will fi nd information on the thread net,
thread unreeling disc, spool disc and cone
thread adapter on pages 9 and 10. Thread
through the thread guides 31 from the back
to the front following the colored threading
paths.
Lift the carry handle 3 upwards. Thread
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 fi rmly between
the tension discs. Return the carrying handle
to its original position.
1616
Note:
Thread in a sequence of 1 to 5.
Threading the upper overedge looper (pink)
Turn the handwheel towards you until the
upper overedge looper 18 is in its highest
position. Thread in a sequence of 1 to 8.
Note:
To make this task easier, use the tweezers
which 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.
1717
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.
1818
Note:
To make this task easier, use the tweezers
which can be found behind the swivel plate.
Thread through the thread guides 1 to 8,
marked yellow.
Press lever A downwards and hook the
thread into guide B. Please also refer to the
drawing 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.
1919
Threading the two thread 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.
2020
Note:
To make this task easier, use the tweezers
which can be found behind the swivel plate.
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