Industrial Sewing Machine SADE
109
7.4 Sewing speed table
Operate the sewing machine at a speed equal to or lower than maximum sewing speed
selected from those shown in the table below according to the sewing conditions.
The sewing speed is automatically set according to the amount of the alternating verti-
cal movement of the walking foot and the pressure foot.
In the case the stitch length exceeds 7 mm, change the maximum sewing speed refer-
ring to "6. Function setting of SC-922" in the Instruction Manual for the SC-922.
Amount of alternate vertical
movement of the walking
foot and pressure foot
Stitch length: 7 mm or less
7 mm and 9 mm or less
less than 3 mm 3000 sti/min 2000 sti/min
3,25 mm to less than 4 mm
4,25 mm to less than 5 mm 2000 sti/min 2000 sti/min
5,25 mm to less than 9 mm 1800 sti/min 1800 sti/min
To lift the presser foot manually, pull hand lifter
❶
in the direction of the arrow.
This makes the presser foot rise 10 mm and
stay at that position.
7.6 Resetting the safety clutch
WARNING!
To protect against possible personal injury due to abrupt start of the
machine, be sure to start the following work after turning the power off
and ascertaining that the motor is at rest.
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