Adjusting The Speed Controller - Brother BAS-300G-484/484SF Instruction Manual

3-8. Adjusting the speed controller

<Adjusting the lifting and lowering speeds for the work clamp>
Valve 2
<Adjusting the thread wiper operating speed>
Valve 3
<Adjusting the thread take-up lever operating speed>
Valve 4
You can adjust the lifting and lowering speeds for the work
clamps using the knobs (1) and (2) on valves 1 and 2.
Valve 1 adjusts the right work clamp (3), and valve 2 adjusts
the left work clamp (4).
The knobs (1) and (2) should be adjusted so that the left and
right work clamps operate at the same speed.
• When the upper knob (1) is tightened, the lifting speed
becomes slower. When it is loosened, the lifting speed
becomes faster.
• When the lower knob (2) is tightened, the lowering speed
becomes slower. When it is loosened, the lowering speed
becomes faster.
You can operate the work clamp when the power is turned off
by pressing the manual buttons (5).
Valve 1
4646M
Valve 3 is used for adjusting the operating speed of the thread
wiper (1).
To use, fully tighten both the upper and lower knobs (2) and (3),
and then loosen them both by 6 turns.
NOTE:
If the knobs (2) and (3) are tightened more than the settings
mentioned above, upper thread wiping may not be carried
out correctly.
4647M
Valve 4 is used for adjusting the operating speed of the thread
take-up lever (1).
To use, fully tighten both the upper and lower knobs (2) and (3),
and then loosen them both by 6 turns.
NOTE:
If the knobs (2) and (3) are tightened more than the settings
mentioned above, the upper thread trailing length may not
be maintained correctly.
4648M
BAS-300G-484, BAS-300G-484 SF
3. INSTALLATION
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