Komatsu PC290LC-6K Operation & Maintenance Manual page 111

1. Turn on the active mode selector switch (lights up).
2. While in this condition, press and hold the knob switch of the left-
hand work equipment lever once (single click).
3. Since the machine returns to the normal active mode in 8.5 sec
after the switch is pressed, use the active power-max function ef-
fectively for heavy and quick work.
Function Suitable work
Digging and loading
Active
(Heavy load)
power-max
Rock raising
function
(Heavy load)
The load sensing function is installed to the active mode. If the
machine is set to the active power-max, however, the load sensing
function is turned off and the engine speed returns to full speed to
increase the speed of the work equipment.
Advantages in work
Since digging forces of arm and
bucket are increased, working
speed is increased.
12. OPERATION
2-67