handi quilter HQ Sweet Sixteen QM30270, Руководство пользователя

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Page 26
HQ Sweet Sixteen User Manual
Needle Thread Breaks Corrective Measure
• Check the tension of the top tensioner and bobbin for proper balance (see
page 12).
• Top and bobbin tension not
balanced
• Look for severe twisting of threads when approximately 12 to 15 inches has
been pulled off, with ends pinched together. Cotton threads are particularly
susceptible to dry rot which makes thread brittle. Do not use poor quality
thread, or thread that is rotted or brittle.
• Thread cones/spools are poor
quality or may have severe
twisting or thread rot
• Check that the machine is threaded correctly. • The machine head has been
threaded incorrectly or thread
spools are not positioned
correctly
• Inspect for accidental double wrapping of thread on thread guides.
• Inspect the thread mast making sure the eyelets of the mast are directly over
the spools.
• Inspect the vertical positioning of the thread cones. Tipped cones can
dramatically affect thread tension and can cause breakage.
• Inspect for particles and remove any lint or debris. • Particles in tension discs
• Change the bobbin. The slightest hesitation of the bobbin rotation can be the
cause of dramatic tension change and thread breakage. Use ONLY HQ bobbins
• Bobbin rotation is not smooth
• Change the needle at least once per quilt. Make sure the needle is installed to
the top of the sight hole in the needle bar.
• Needle is burred, bent or dull,
or installed incorrectly
• Replace the needle with one better suited for the thread. Use the proper size
needle.
• Needle not suited for the
thread
• Move more quickly so stitches don’t overlap or build up. When starting the
machine, begin moving immediately. Sewing in one place too long will cause
the thread to break.
• Hesitating too long at one point
in the pattern
• Timing of the machine is improper. Consult a repair technician at your local,
authorized Handi Quilter representative.
• Improper needle/hook
relationship
• If the thread is shredding at the needle plate, check for burrs or jagged edges.
Gently rub with metal cloth to remove the sharp edge. Consult a repair
technician to polish any hard to reach or delicate areas, or if the burr is inside
the hole.
• Damage or burr at the needle
hole in the needle plate or any
other place along the thread
path
• Use needles recommended by Handi Quilter. Using the wrong needle with a
smaller shank diameter causes many problems. For example a system 1738 or
287WH needle with a shank diameter of 1.64mm will fit loosely into the clamp
at an angle. This may cause skipped stitches because the needle is positioned
too far away from the hook point. It can also cause the needle to hit the hook,
breaking the needle.
• Wrong type of needle
• The needle is too close to the hook, which causes friction and a possible
collision of the hook point and the needle.
• Other possible causes:
• Needle plate damage.
• Hook damage.
• Broken needle inside needle bar clamp, preventing the needle from insertion
to the top of the clamp.
• Damaged needle bar clamp.
No Visible Display
Corrective Measure
• Check the communication cable that connects the display to the machine and
make sure the connection is secure.
• Cable unplugged
Correcting Common Issues