AMF S-4001 ISBH+I SM 30, Parts And Service Manual, Page: 85 / 90

S-4001 ISBH+I SM 30°
2-3
Revised: 10/2017
E-mail: service@amfreece.cz; webside: www.amfreece.com
Phone: +420 582 309 146; Fax: +420 582 360 606
TROUBLESHOOTING
FAULT POSSIBLE CAUSE PROBABLE SOLUTION
Thread not trim-
med at the end of
the cycle
Trimming knife damaged Replace knife
Wrong adjustment of pulling hook See section E 15 point 2
Throttle valve regulating tension disc
is too loose.
See section E14 point 3
Incorrect loopers timing See section E12
Incorrect setting of trimming delay Change Trim delay parameter D3
Trimming length incorrectly set Change Trim time parameter D3
Sewing motor
turns, machine
does not sew
Belt broken or loose See section E18 for changing
Machine sews
continually, does
not stop
Stopping sensor adjusted incorrectly
See section E17 for correct position
adjustment
Zero pressure on
regulator
Shut off valve closed Open shut off valve
Low air pressure
Filter element dirty Change the filter element
Air fitting or tubing obstruction Check supply lines