Barudan BEVT Series, Instruction Manual

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TROUBLESHOOTING PROBLEMS
PROBLEM CAUSE SOLUTION
Thread Breaks Flow of top thread is obstructed Check the top tension, if it is too
tight, see if the thread is caught on
the tension disks, thread rack or
thread spindle and make sure it is
not looped around the take-up
spring.
Machine running too fast for the
particular application
Reduce speed.
Burr on bobbin case Buff burr with emery and crocus
cloth (available at hardware stores)
or replace bobbin case.
Burr or excessive wear on hook Hooks are not always repairable
and buffing the hook may alter the
timing. Replace the entire hook as-
sembly.
Scratches, needle marks or burrs
on throat plate top, hole, and un-
derside
Polish flat surfaces with fine em-
ery, then crocus cloth. Polish hole
with emery or crocus cord.
Burr on front edge of hook Polish with emery or crocus cloth.
Clean after polishing and re-oil it.
Undetected Thread
Breaks
Sensors are not detecting thread
breaks.
Check if contacts are dirty.
Or, the machine may be set for a
boring device in MC Parameter 1.
Check to make sure that the Borer
parameter is at Ø.
Thread Break Is Frayed Burr on eye of needle Replace the needle.
Eye of needle becomes worn (es-
pecially when using metallic
thread)
Replace the needle. Try an over-
sized needle with metallic thread.
Ceramic eyelet’s or ivory thread
guides are worn or burred (espe-
cially when using metallic thread)
Polish lightly with crocus cord or
replace if badly worn. For a tem-
porary solution, apply clear nail
polish over the worn spot.
Eye of needle too small Change to a larger needle. When
sewing with 40 weight rayon
thread, it is recommended you use
a 11/75 or 10/70 size needle.
Thread Frays and Breaks Weak spot or knots in thread (this
will show up as either a fray or a
clean break)
This will show up as an infrequent
break, if so, replace the thread.
Thread Looping The take-up spring adjustment is
incorrect.
Increase the take-up spring tension
slightly to eliminate looping on the
top of embroidery.
BE
V
T Series
Mechanical
Guide Troubleshooting
3
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