53
54
No.
Symptoms of
breakdown
Checking factors
Cause
1
When the machine
operates or drives in
an odd situation
The tension of the belt was released in
excess or the belt was damaged
Control of the belt tension
Change of the belt
Short circuit of the fuse for the power or
the circuit.
Change after checking out if the main
motor drive fuse in the control box is
short circuit.
The feed bracket is deviated from the
limit position of X or Y.
Move the feed bracket to the normal
position (within the limit of switch)
2
Wrong position of stop
Release of the main driving belt
Control the belt tension
Wrong position of the upper shaft
sensor plate or error of the photo
sensor
Control the upper shaft sensor plate’s
position or Change the photo sensor
3
Needle breaks
Damaged needle
(the needle is bended or the needle
hole is damaged, the end of the needle
is abrasive or transformed)
Change the needle
Wrong mount of the needle
Proper mounting of the needle
The needle and the shuttle were met
Control the distance between the
needle and the shuttle
4
Thread is cut
Wrong insert of thread
Insert the thread properly
Wrong mounting of thread
(Height of the needle, direction of the
needle, etc)
Mount the needle again
Damaged needle
(the needle is bended or the needle
hole is damaged, the end of the needle
is abrasive or transformed)
Change the needle
Strong tension of lower thread and
upper thread
Control of the tension
Excessive tension and operating
amount of the thread take up spring.
Control of the thread take up spring’s
tension and operating amount.
The thread adjusting hole of the shuttle
upper face spring was damage
Change the shuttle upper face spring.
5
Sewing is skipped.
The bended needle was used
Change the needle
Inappropriate size of the needle was
used compared to the thread
Change the needle
Wrong mounting of the needle
Mount the needle again
10
Problem solution
Содержание SPS/F-1811 Series
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