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Gemsy GEM1900A - Machine Maintenance Procedures; Adjusting Mechanical Components

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6.使用时的注意 Cautions in operation
使Operation Instruction
物/机线/机
Sewn product /thread/needle
格/缝
Head type/ Sewing speed
8层/棉线#5 0/DPx 5#16
8-layered denim/Cotton thread
#50/DPx5 #16
S )/300 0rpm
S (Standard)/3,000 rpm
8层/涤纶#50 /DPx5 #14
8-layered woolen gabardine/
Tetoron #50/DPx5 #14
S )/230 0rpm
S (Standard)/2,300rpm
8层/棉线#2 0/DPx 17#19
8-layered denim/Cotlon thread
#20/DPx17 #19
H )/300 0rpm
H (l-leavy+veighi
material)/3,000rpm
6x1 2缝/棉线
#20/D Px17# 19
Overlapped sewing of 6 x 12-
layered denim/Cotton thread
#20/DPx17#19
H )/300 0rpm
W )/27 00rpm
H (Heavy-weight
maieriao)/3,000 rpm
W (Double-capacicy
hook)/2,700rpm
料+肩3 +1层/亮线
#60/D Px5#1 1
Tricot + shoulder strap (3 + 1)
layered section/Spun #60/DPx5
#11
F )/200 0rpm
F(Foundation)/2,000 rpm
1
2使
2
3
线
线
使照[针度]的p.32
(1) When the error indicator lamp lights up, be sure to check
the cause of trouble and take a proper corrective measure.
(2) Do not draw, by hand, the material being sewn during
sewing. Doing so will cause the needle shift from the correct
position. If the needle moves from the correct position, press
the key two times. This will return the needle to the normal
origin.
(3) Do not turn OFF the power in a state that the needle is
lowered. The presser comes down and the wiper interferes
with needle. As a result, there is a danger of needle breakage
or the like.
* To prevent the thread breakage due to the needle heat, set
the sewing speed referring to the above table in accordance
with the sewing conditions.
* For sewing the foundation or the like, lower the height of the
needle bar to prevent the stitch skipping. (Refer to the item "
Adjusting the height of the needle bar", (P. 32.))
1.针杆高度 Adjusting the height of the needle bar
[7].维 MAINTENANCE
CAUTION
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
A:DP×5用刻线
A:Engraved line
for DP×5
B
B:Engraved line
for DP×17
:DP×17用刻线
B为H规格专用
B is for H type only
线
upper engraved line
线
线
0.5mm-1mm
Bring needle bar to the lowest position of its stroke. Loosen
needle bar connection screw and adjust so that upper
marker line engraved on the needle bar aligns with the
bottom end of needle bar bushing, lower .
(NOTE) After the adjustment, make sure that there is no uneven
torque.
When stitch skipping occurs in accordance with the sewing
conditions, adjust the height of the needle bar so as to lower it
by 0.5 to 1 mm from the needle bar engraved line .
31

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