Cause Of Breakdown And Troubleshooting - SunStar SPS/E-BS1202 Series User Manual

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Cause of Breakdown and Troubleshooting

No. Trouble
Error on operation or
1
drive of machine
2
Needle bent
Thread is cut
3
Stitch skipping
4
Cause
Loosing of belt tension and damage on belt
Fuse shortage for main power or circuit
Deviation from Y and Y limit of feed bracket
Damage on needle(Bending of needle,
cracks on needle hole or groove, and
abrasion or transformation of needle tip)
Wrong installation of needle
Contact of needle with shuttle
Wrong insertion of thread
Wrong installation of needle (Height of
needle or direction of needle)
Damage on needle (Bending of needle,
cracks on needle hole or groove, and
abrasion or transformation of needle tip)
Excessive tension of upper thread and
under thread
Excessive tension and stroke of take-up
lever spring
Crack on the controlling hole of shuttle
surface spring
Use of bending needle
Use of improper sized needle compared
with using thread
Wrong installation of needle
Improper timing for needle and shuttle
Improper gap between groove and shuttle
point
Excessive tension of take-up lever spring
and stroke
Corrective Action
Adjust the belt tension or exchange it
Check the fuse shortage of main shaft drive
motor in a controller box or exchange it
Move the feed bracket to normal place
(inside limit switch)
Exchange the needle
Install the needle properly
Adjust the distance properly between a
needle and shuttle
Insert the thread properly
Reinstall the needle.
Exchange the needle.
Adjust the tension
Adjust the tension and stroke of take-up
lever spring
Exchange the shuttle surface spring
Exchange the needle.
Exchange the needle.
Reinstall the needle.
Readjustment of the needle and shuttle timing
Readjustment of the distance between
needle and shuttle
Adjust the tension of take-up lever spring
and stroke
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