Brother BE-438B, Service Manual

Page: 139 / 198

5. ADJUSTMENT
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３０
. Adjustment of air pressure (Pneumatic specifications)
2622Q
Increase pressure
Increase pressure
2621Q
1. Air pressure should be 0.5 Mpa.
The air pressure can be adjusted by pulling up
and turning the control knob (2) on the
integrator (1).
After adjustment is complete, push the control
knob (2) downward to lock it.
2. Adjust the air pressure for the reversal cylinder
to stay within such a range that the presser
crank (4) rotates reversely when pressing the
sewing material with the pressure plate (3).
(Approx. 0.3 Mpa)
For adjustment, pull up and, turn the control
knob (6) on the air regulator (5).
After adjustment is complete, push the control
knob (6) downward to lock it.
3. If water stands in the bottle of the integrator (1),
turn the drain cock (7) in the direction indicated
by an arrow to drain the water.
５
-
３１
. Adjustment of inner clamping device
Adjustment of the positioning plates
Loosen the screws (2), and adjust the position of
the positioning plate R (3) so that the label (1) can
be evenly laid out between the front and back
seams (A).
Next, loosen the screws (4), and adjust the position
of the positioning plate L (5) so that the presser
plate can be evenly laid out between the left and
right seams (B).
Adjustment of the presser crank horizontal
position
Loosen the nut (3) and push in or pull out the
adjusting bolt (4) so that the presser crank (2) can
be horizontal when the reversal cylinder piston rod
(1) is moved to the left extreme.
2623Q
2624Q
KE-430B, 430C series 132