iii
PRECAUTIONS TO
%
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.
EN IN
9
ARIOUS OPERATION STAGES
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– 9 –
18. ADJUSTING THE FEED MECHANISM
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be sure that the
motor has totally stopped rotating in prior.
1) Use the 3-phase 400 W AC clutch motor.
2) Use an M type V belt.
3) The following table shows the relationship among the motor pulley and the sewing speed.
Model
Sewing speed
Effective diameter of
handwheel
Number
of poles
Frequency
Rotational speed
of motor
Effective diameter
of motor pulley
LZH-1290
2,000 sti/min
φ
67.4
4
50 Hz
1,430 rpm
φ
95
60 Hz
1,715 rpm
φ
80
(Caution)
The effective diameter of the motor pulley is obtained by subtracting 5 mm from the outside diameter.
19. MOTOR PULLEY AND SEWING SPEED