Butterfly B1501B/T, Operation And Service Manual

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Butterfly B1501B/T - Single Head 15 Needle Embroidery Machine Manual
breaks, then the tensions need to be loosened. It is recommended during the first run of a design to
slow the machine speed down as slow as possible and make minor adjustments to the tension while
slowly speeding the machine up until the tensions are correct. If bobbin thread is coming up on the top
of the embroidery then the upper thread may be too tight assuming the bobbin is set correctly. If the
bobbin is not set correctly, then the bobbin might be too loose.
There are several other ways to test tensions. One is referred to as the ‘H’ or ‘I’ or ‘Column’
test. In this test, once the embroidery is completed, look underneath the embroidered item. Columns
of embroidery such as the column of an ‘I’ should be 1/3 bobbin with 1/3 thread on each sides of the
bobbin.
- If the bobbin is correctly set
o
Too much bobbin (more than 1/3 of the column)? – Loosen upper thread
o
Too little bobbin (less than 1/3 of the column)? – Tighten upper thread
- If the bobbin is not set
o
Too much bobbin (more than 1/3 of the column)? – Tighten bobbin
o
Too little bobbin (less than 1/3 of the column)? – Loosen bobbin