Pfaff C1100 Pro Owner's Manual - Page 92

Cause, Problem, Correction, Reference

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TROUBLE SHOOTING Problem Cause Correction Reference Seam puckering 1.The needle thread tension is too tight. 1.Loosen the thread tension. page 42 2.The needle thread is not threaded 2.Rethread the machine. correctly. page 27 3.The needle is too heavy for the fabric 3.Choose a needle to match the thread and page 41 being sewn. fabric. Stitches are distorted The machine jams 4.The stitch length is too long for the fabric. 4.Change the stitch length. page 43 5.The presser foot pressure is not correctly 5.Adjust the presser foot pressure. adjusted. page 45 1.The correct presser foot is not used. 1.Select the correct foot. page 92 2.The needle thread tension is too tight. 2.Loosen the thread tension . page 42 3.The stitch length is not suitable for the 3.Change stitch length. fabric being sewn. page 43 4.Feed balancing dial is not set properly. 4.Adjusting stitch balance. page 44 1.Thread is caught in the hook. 2.The feed dogs are packed with lint. Remove the upper thread and bobbin case, turn the handwheel backwards and forwards by hand and remove the thread remnants. page 88 1.Lint or oil have collected on the hook or 1.Clean the hook and feed dog. needle bar. page 88 The machine is noisy 2.Poor quality oil has been used. 2.Only use good quality sewing machine -- oil. 3.The needle is damaged. 3.Replace the needle. page 33 4.Slight humming sound coming from 4.Normal. -- internal motor. 5.Thread is caught in the hook. 6.The feed dogs are packed with lint. Remove the upper thread and bobbin case, turn the handwheel backwards and forwards by hand and remove the thread remnants. page 88 Uneven stitches, uneven feed 1.Poor quality thread. 2.The bobbin case is threaded wrong. 3.Fabric has been pulled. 1.Select a better quality thread. page 41 2.Remove the bobbin case, then thread page 26 and reinsert correctly. 3.Do not pull on the fabric while sewing, -- let it be taken up by the machine. 1.The machine is not turned on. 1.Turn on the machine. page 19 The sewing machine doesn't operate 2.The START/STOP button or foot control 2.Press the START/STOP button or the page 8/9 pedal was not pressed. foot control pedal. 3.The presser foot lever is raised. 3.Lower the presser foot lever. page 36 4.A thread is caught in the hook race. 4.Remove the upper thread and bobbin case, turn the handwheel backwards and forwards by hand and remove the thread remnants. page 88 5.The machine is not plugged in. 5.Connect the power cord plug to the page 18 electrical outlet. 91 APPENDIX

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91
Stitches are
distorted
1.The needle thread tension is too tight.
2.The
needle
thread
is
not
threaded
correctly.
3.The needle is too heavy for the fabric
being sewn.
4.The stitch length is too long for the fabric.
5.The presser foot pressure is not correctly
adjusted.
1.The correct presser foot is not used.
2.The needle thread tension is too tight.
3.The stitch length is not suitable for the
fabric being sewn.
4.Feed balancing dial is not set properly.
1.Lint or oil have collected on the hook or
needle bar.
2.Poor quality oil has been used.
3.The needle is damaged.
1.Poor quality thread.
2.The bobbin case is threaded wrong.
3.Fabric has been pulled.
Cause
5.Thread is caught in the hook.
4.Slight
humming
sound
coming
from
internal motor.
6.The feed dogs are packed with lint.
1.Thread is caught in the hook.
2.The feed dogs are packed with lint.
1.The machine is not turned on.
2.The START/STOP button or foot control
pedal was not pressed.
3.The presser foot lever is raised.
4.A thread is caught in the hook race.
5.The machine is not plugged in.
Seam
puckering
1.Select the correct foot.
2.Loosen the thread tension .
3.Change stitch length.
4.Adjusting stitch balance.
1.Loosen the thread tension.
2.Rethread the machine.
3.Choose a needle to match the thread and
fabric.
4.Change the stitch length.
5.Adjust the presser foot pressure.
The
machine
jams
Remove
the
upper
thread
and
bobbin
case, turn the handwheel backwards and
forwards by hand and remove the thread
remnants.
The
machine is
noisy
1.Clean the hook and feed dog.
2.Only use good quality sewing machine
oil.
3.Replace the needle.
Uneven
stitches,
uneven feed
1.Select a better quality thread.
2.Remove the bobbin case, then thread
and reinsert correctly.
3.Do not pull on the fabric while sewing,
let it be taken up by the machine.
Problem
Correction
Reference
4.Normal.
Remove
the
upper
thread
and
bobbin
case, turn the handwheel backwards and
forwards by hand and remove the thread
remnants.
page 42
page 27
page 41
page 43
page 45
page 92
page 42
page 43
page 44
page 88
page 88
--
page 33
--
page 41
page 26
--
The sewing
machine
doesn't
operate
1.Turn on the machine.
2.Press the START/STOP button or the
foot control pedal.
3.Lower the presser foot lever.
4.Remove the upper thread and bobbin
case,
turn
the
handwheel
backwards
and forwards by hand and remove the
thread remnants.
5.
Connect
the
power
cord
plug
to
the
electrical outlet.
page 19
page
8/9
page 36
page 88
page 18
page 88
APPENDIX
TROUBLE SHOOTING