HiGH-LiFT YL-3600-H, Руководство по установке и эксплуатации

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c. The hydraulic system works as follows:
When pressing the start button on the hydraulic station , the motor starter to drive the pump
suction pressure from the tank and oil is carried into the serial A9 fuel tank, so that the piston rod
to move. The A4 flood valve closed, the pressure is fine before leave factory . To ensure that the
requirements of lifting rated load. However, the system pressure exceeds the limit, automatic flood
valve unloading. Release the start button, stop oil supply to enhance the end, began operations
work. If you decline, the first point of action to rise a little, after the mechanical safety lock is
opened, pressing the manual valve A8 and began unloading decreased.