G Safety Clutch - Mitsubishi Electric LU2-4400-B0B Instruction Manual

HOW TO USE

G Safety clutch

● A safety clutch is installed to prevent the
hook or timing belt damage if the thread is
caught in the hook when the machine is loaded
abnormally during operation.
1 ） Function of the safety clutch
( 1 ) When the safety clutch functions, the timing
belt pulley will be freed, and the lower shaft
rotation will stop. The upper shaft only will
rotate. Stop the operation of the machine.
( 2 ) Completely remove the thread, etc. caught in
the hook.
( 3 ) Turn the bushing by hand, and check
whether the lower shaft rotates lightly and
properly, then install the clutch device as
before.
2 ） How to set safety clutch
( 1 ) While pushing down the pushbutton on the
opposite side of bed with your left hand, turn
the pulley slowly with your right hand away
from you as shown in the figure.
( 2 ) The pulley will be stopped by the gear plate,
but turn the pulley more firmly.
( 3 ) Release the pushbutton.
( 4 ) The clutch device will be set as shown in the
figure.
3 ） Force applied to the safety clutch
( 1 ) The force applied to the safety clutch is
the smallest when the white mark of the
eccentric pin faces the center of the lower
shaft. The force proportionally increases as
the white mark faces the outside.
( 2 ) To adjust the force, slide the timing belt,
loosen the set screw, and turn the eccentric
pin.
( 3 ) After adjusting, fully tighten the set screw.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
White mark
Strengthen
Weaken
Lower shaft
— 11 —
Timing belt pulley
Safety clutch
Bushing
Gear plate
Eccentric pin
Timing belt
Set screw
Eccentric pin
Pulley
Pushbutton