Kompernass LERVIA KH 4000 User Manual
KH4000 Automatic Free-Arm Sewing Machine
Operating instructions
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Lervia Automatic Free-Arm Sewing Machine
Lervia KH 4000
1. Intended Use 4
2. Technical data 4
3. Package contents 4
4. Operating elements 4
5. Safety instructions 5
6. Setting up 6
7. Switching On / Off 6
8. Threading 7
a) Threading the lower bobbin 7
b) Threading the lower thread 8
c) Threading the upper thread 11
d) Retrieving the lower thread 12
e) Threading with 2 needles 12
9. Attaching accessories 13
a) Changing needles 13
b) Changing the stitch plate 13
c) Changing the snap-on foot 14
10. Settings 15
a) Setting the upper thread tension 15
b) Setting the lower thread tension 15
c) Setting the presser foot pressure 16
d) Setting the stitch width 16
e) Setting the stitch length 16
11. Sewing 17
a) To place the material 17
b) To start a seam 17
c) To finish off a seam 17
d) Guiding the material 18
e) Changing the sewing direction 18
f) Selecting a stitch pattern 19
g) Straight stitch 19
h) Zigzag 19
i) Stitch pattern table 20
j) Blind hem 21
k) Material-Thread-Needle Table 22
l) Seam guide 23
m) Overcast stitch 23
n) Stretch seams 23
o) Sewing buttonholes 24
p) Buttonhole table 24
q) Sewing on buttons 25
r) "Edge-to-edge" sewing 25
s) Decorative stitches 25
t) Sewing a zipper 26
u) Sewing with the twin needle 27
v) Embroidery 27
w) Thread cutter 27
12. Care 28
a) Clean the gripper area 28
b) Clean the feeder 28
c) Clean the casing 29
d) Oil the gripper track 29
e) What else needs oiling? 29
f) Storing 30
13. Troubleshooting 30
14. Warranty and service 31
15. Disposal 31
Keep this manual for future reference and pass it on with the equipment to any future users.
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Lervia KH 4000
Operating instructions
Lervia Automatic Free-Arm Sewing
Machine
1. Intended Use
The sewing machine is intended ...
- for use as a movable machine,
- for sewing of typical household textiles and ...
- only for private household use.
The sewing machine is not intended ...
- to be installed at a fixed location,
- for processing of other materials
(e.g. leather or other heavy materials
such as tent or sail fabrics)
- for commercial or industrial use.
2. Technical data
Power supply : 230 V / ~50 Hz
Motor output : 70 W
Bulb power : 15 W
Bulb voltage : 230 V / ~50 Hz
Bulb thread : E14 thread
Protection class : II
3. Package contents
(see front fold-out page)
● 1 sewing machine
1 blind hem foot
1 seam guide
1 zipper foot
1 buttonhole foot
1 button foot
1 sewing foot holder (attached)
1 finger protector (attached)
1 zigzag foot (attached)
1 knife
1 oil tube
1 set of needles (incl. twin needle)
3 screwdrivers
2 felt wheels
1 darning plate
3 bobbins
1 foot switch
● Operating instructions
● Warranty booklet
4. Operating elements
(see rear fold-out page)
Front cover
q
Selector wheel (contact pressure sewing foot)
w
Threading hook
e
Selector wheel (upper thread tension)
r
Upper thread guide
t
Selector wheel (stitch width)
y
Carrying handle
u
Thread spool carrier
i
Winder spindle
o
Spool stop
a
Handwheel
1!
Selector wheel (stitch length)
1@
ON / OFF switch
1#
Foot switch connection
1$
Stitch pattern selector
1%
Foot lever
1^
Adjusting foot
1&
Bobbin case
1*
Foot holder
1(
Needle retainer
2)
Stitch plate
2!
Box compartment
2@
Lever (reverse operation)
2#
Tension spring
2$
Lamp
2%
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Lervia KH 4000
5. Safety instructions
Like any other electrical device, a sewing
machine can cause serious, even life-threatening
injuries. To avoid this, and in order to work
safely:
• Before initial use of your sewing machine,
read these operating instructions thoroughly.
• Keep the operating instructions in a suitable
place near the machine. When passing the
appliance on to others, always enclose the
operating instructions.
• Always disconnect the power supply when
leaving the machine unattended. This will
prevent the risk of accidents if the machine
is switched on accidentally.
• First pull the power plug before changing
the bulb or performing maintenance work
on the machine.
This will prevent possibly life-threatening
electric shocks.
• Do not remove the plug from the socket by
pulling on the cable. Always grip the plug
and not the cable when pulling out the
power plug.
• Only use the sewing machine in dry rooms.
Warning
against injuries and material damages:
According to legislation, you as the user of
an electrical appliance are responsible for
preventing possible accidents through safetyconscious behaviour:
• Keep your work space tidy. An untidy
workplace can lead to accidents.
• Provide adequate lighting when working!
• Do not wear loose clothing or jewellery,
as these can be caught in the moving parts.
You should also wear a hair net if you have
long hair.
• Avoid abnormal posture. Remain steady
and in a well-balanced position at all times.
• Be alert! Pay attention to what you are doing.
Always take a rational approach to your work.
Never work with the sewing machine if you
are unable to concentrate or if you are feeling
unwell!
If accidents occur as a result of handling the
machine with insufficient care, or failure to
follow the safety instructions in this manual,
then the manufacturer cannot accept liability.
• In case of any visible damage on the machine,
the foot switch or the power cable: Have the
damage repaired by Customer Service before
using the sewing machine again.
• Never let children or elderly persons handle
the machine unsupervised because they may
not properly appreciate the possible dangers.
Keep electrical appliances outside the reach
of children.
• Never use the machine when the ventilation
apertures are blocked. Keep the ventilation
apertures of the machine and the foot switch
free from fluff, dust and waste material.
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Lervia KH 4000
6. Setting up
• Place the sewing machine on a stabile table.
• Plug the foot switch into the connection
socket gof the machine and ...
• insert the plug into the wall socket.
If the worktop is not completely even, you can
compensate for slight unevenness as follows:
• Pull the box compartment 2@off to the
side, it is only slid on, not firmly attached.
• You can turn the adjusting foot 1&that
becomes visible underneath in order to
make the sewing machine rest properly.
You can simply slide the box compartment
back on – for instance if you need this as an
"extension table" for sewing large material.
You can also leave the box compartment
off, for example for free-arm sewing of arms,
trouser legs, etc. The box compartment 2@is
also used to store the accessories.
2@
2@
7. Switching On / Off
2@
You should familiarize yourself with these
methods of switching on and off, so that you
can take the correct action in the event of an
emergency:
• You can switch the sewing machine on
or off by pressing the switch1#. The bulb
indicates the operating state.
2%
• If you pull out the foot switch plug, the
machine is without power.
• If you pull the power plug from the socket,
the machine and the foot switch are without
power.
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8. Threading
Lervia KH 4000
t
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i
a
Warning:
Make sure that the sewing mahine is switched
off and the plug has been pulled out of the
socket when threading in order to avoid injury
if the sewing machine should be accidentally
switched on.
a) Threading the lower bobbin
To load the lower bobbin with thread:
• Pull out one of the two thread spool carriers
on top and place a spool of thread there.
i
• You can place a felt pad underneath the
spool of thread , so that the bobbin runs
evenly.
• Place an empty spool on the winder
spindleo.
• Pull the thread through the upper thread
guide t.
• Wind the loose end of the thread clockwise
a few times around the empty spool .
• When the first windings of thread are taut
against the spool, press the spool with the
winder spindle oagainst the spool stopa.
• Pull the handwheelson the right of the
machine slightly outward in order to disconnect the sewing mechanism from the motor.
• Now switch the sewing machine on and step
on the foot switch . Once the spool is full,
cut the thread.
• Press the winder spindle oback to the left
and remove the full spool.
• Do not forget to push the handwheelsback
in – otherwise the sewing mechanism remains
disconnected from the motor.
s
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18 a
Lervia KH 4000
18 a
b) Threading the lower thread
Turn the handwheel sin an anti-clockwise
direction to fully raise the needle.
• Pull the box compartment 2@off to the
side, it is only slid on, not firmly attached.
• Then open the gripper flap“situated
behind it.
“
2@
1*
• Fold out the folding lever of the bobbin
case l...
• and pull out the bobbin case las shown.
1*
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18 d
18 c
18 b
1*
18 c
18 b
18 d
Lervia KH 4000
• Unwind approximately 10 cm of thread from
the spool and slide this into the bobbin case
so that the spool unwinds anti-clockwise.
l
• Pull the unwound end of the thread through
the gap in the side wall of the bobbin
case ...
• under the tension spring ,
• until the thread comes out the slit in
the bobbin case.
For optimal setting of the lower thread
tension, see Chapter 10.
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18 e
Lervia KH 4000
18 e
• Put the bobbin case lback on the pin and ...
1*
”
• turn the bobbin case luntil the driver
catches in the notch.
• Lay the excess thread such that it does not
bind anywhere ...
• then close the gripper flap ”.
2@
• You can simply slide the box compartment
back on – for instance if you need this
2@
as an "extension table" for sewing large
material. You can also leave the box compartment off, for example for free-arm sewing
of arms, trouser legs, etc.
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