8
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8
】
ADJUSTING THE SPEED CONTROLLER AND AIR PRESSURE
8888----1 Adjusting the speed controller
1 Adjusting the speed controller
1 Adjusting the speed controller
1 Adjusting the speed controller
Speed controller F controls the speed when the thread
trimming knife holder projects.
Speed controller G controls the speed when the thread
trimming knife holder retracts.
If the speed is too fast, the knife holder will be greatly
shocked. This will cause trouble such as a thread is
trimmed before it is caught in the knives or it is not
clamped correctly by the thread clamp.
If screw F is too loosened, the holder will protrude too
fast and then the position of the movable knife will
become unstable, causing cutting error.
If screw G is too loosened, the holder will retract too
fast and then a looper thread may not be held properly.
8888----2 Air pressure
2 Air pressure
2 Air pressure
2 Air pressure
Set the regulator at 4~5kg/cm2.
An air pressure of more than 5.0kg will cause trouble.
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9
】
ADJUSTING THE NEEDLE THREAD WIPER
1. Tighten screw E to position lever B horizontally.
There should be a 0 to 0.3mm clearance between
bracket C and stopper ring D.
2. Secure shaft F with screw G.
There should be 1mm clearance between lever B
and secure shaft F.
3. Position thread wiper K with screw H.
The distance between the left end of the thread
wiper and the center of the needle bar should be
approximately 19mm when the thread wiper is all
the way to the left and clearance between the
needle center and point P of the thread wiper
should be approximately 1mm.
4. The distance between the left needle and thread
wiper K should approximately 0.5mm with screw A.
5. Position thread wiper K parallel with flat spring M
with screw L.
