Service manual

EBS - MARK II
2-4 Revised:05/2013
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TROUBLESHOOTING
FAULT DESCRIPTION FAULT LOCATION FAULT ELIMINATION
Wrong tension of the
thread when sewing -
TENSION
Damaged or dirty
mechanism TENSION.
Check the tensioning mechanism. Clean
the possible dirt between the chucks of
the tensioner, polish the damaged parts
or replace them.
Wrongly adjusted
TENSION
-mechanically.
Adjust the chucks TENSION by using
the catches so as the bearing surfaces
are joined in the same level - according
to chapter no. C 3.
Wrongly adjusted
TENSION
-electronically
Adjust the positions and the pressure
of chucks TENSION, use the display
according to chapter no. E 1.5.
Wrong thread feeding The threads do not go
through the threading
hose.
Clean the hose with an air brush, event.
mechanically remove the dirt from the
hose.
Short end of the
thread.
Prolong the time of feeding on the
control display - blowout of the thread
according to chapter no. E 1.5.
Button torn from the
chucks
Wrongly placed button. Reload the button. If the failure
occurs again, adjust the button loading
mechanism again according to chapter
no. C 4.
Wrongly adjusted
height of the lower
needle bar.
Check the adjustment of the needle bars
height so as the lower needle bar dos
not hit the button. Adjust according to
chapter no. E 3, E 4.
High tension of the
thread when wrapping
the neck.
Decrease the tension of the thread when
wrapping the neck. Adjust on the display
according to chapter no. D 2.8.
Mechanically damaged
chuck.
Repair the chuck or replace the damaged
part.
Wrongly adjusted
operational pressure
of the machine.
Decrease the pressure to the specified
value.