Return Stroke - Baileigh Industrial SH-120250-HD Operator's Manual

Return Stroke

When the cutting beam reaches the return point, coil YA2 is deenergized.
With no valve energized the hydraulic pump will run at idle with fluid flowing back to tank.
At the same time pressurized oil from the accumulator will reverse the flow of oil into the
cylinders causing the beam to rise back to the TDP.
Rake Angle Adjustment
The rake angle is changed be adding or removing oil from the
upper chamber of the right cylinder while keeping the left
cylinder stationery.
1. With the pump running, move the handle for the manual
change-over valve (No.15) to position 2 (up) to direct flow
into or out of the upper chamber of the right cylinder and
block oil flow into or out of the lower chamber of the left
cylinder.
2. On the control panel at the front of the machine, press the
pushbutton for rake angle increase or decrease as needed
for the material to be cut.
3. When the decrease button is pressed the YA1 coil is
energized and oil will enter the upper chamber of right
cylinder and the oil in the lower chamber of the right cylinder
will flow back to the tank through the valve (No.13). With the
left cylinder stationery, the right cylinder comes downward while the rake angle decreases.
4. When the increase button is pressed the YA2 coil is energized and oil will flow across the
valve (No. 3) and enter the lower chamber of right cylinder and the oil in the upper chamber
of the right cylinder will flow back to the tank through the valve (No.11). With the left cylinder
stationery, the right cylinder moves upward while the rake angle increases.
5. When the rake angle is set, place the manual change-over valve (No. 15) back to position 1
(lower) for normal operation.
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