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Lervia KH 4000 Manual

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f) Storing
Keep the sewing machine ...
-at a dry location so that no rust forms on
the metal mechanical parts,
- always under the supplied covers to prevent
dust from entering the sewing machine,
- outside the reach of small children or elderly
persons, so that they cannot endanger
themselves through unsupervised operation.
13. Troubleshooting
If something is not working, you can use the
table below to try and correct the fault. If you
are unable to remedy the problem yourself,
please contact the customer service department
(see warranty card).
Warning:
Make sure that the sewing machine is switched
off and the plug has been pulled out of the
socket to prevent accidents caused by uninten-
tional switching on.
Lervia KH 4000
Fault / Problem: Check: Possible remedy:
Material is not being moved
through
Machine is not sewing - is only the
handwheel turning?
Stitch length wheel set to "0"?
Is the contact pressure of the sewing
foot too low?
Press in the hadnwheel!
Set it at a value from "1“ to "4".
Increase the contact pressure of
the sewing foot!
Needle is breaking
Needle set incorrectly?
Needle is bent?
Do the needle + thread + material
comply with the table in Chapter 10?
Set flat end towards the rear!
Insert a new needle.
Select the right needle for the
thread and the material!
Upper thread is breaking
Was it threaded correctly?
Zigzag setting too wide?
Upper thread tension too firm?
Scoring / scratches on the gripper?
It's best to re-thread from the
beginning!
Try with a smaller width!
Select the middle setting.
Replace the gripper.
Lower thread is breaking
Lower thread tension too taut?
Needle set incorrectly?
Was it threaded correctly?
Dust and fluff in the gripper?
Reduce the thread tension.
Set flat end towards the rear!
It's best to re-thread from the
beginning!
Clean the gripper area
Ripples in the material
Too much tension?
Contact pressure sewing foot too
high?
Do the needle + thread + material
comply with the table in Chapter 10?
Reduce the tension!
Reduce the contact pressure!
Select the right needle for the
thread and the material!
IB_SewingMachine_UK 12.06.2006 14:52 Uhr Seite 30
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