SunStar SPS/D-BH-6000 Series User Manual page 36

No. Problem
Error in upper thread
6 6
trimming
Error in lower thread
7 7
trimming
8
Defect in cloth cutting
36
Cause
The blade groove of the upper thread
trimming copper mes is worn out
The weak air pressure of the upper
thread trimming cylinder prevents
proper operation of the upper thread
trimming copper mes
The wrong placement of the upper
thread trimming copper mes
The lower thread trimming copper mes
and the groove of the fixed mes' blade
are worn out
The weak air pressure of the lower
thread trimming cylinder prevents
proper operation of the upper thread
trimming copper mes
Wrong placement of the lower thread
trimming copper mes
The cutter pressure is weak
The poor contact of cutter and hammer
The blade of the cutter is worn out
Solution
Replace it with a new one
Adjust air pressure
Correct its position
Replace them with the new ones
Adjust air pressure
Put it at the right position
Adjust the cutter pressure
Grind the surface of the hammer
Replace the cutter