47EXCAVATOR OPERATION
To avoid personal injury or death:
A Stop the engine before removing/changing the
equipment.
A Release pressure in the hydraulic system
before removing/changing the equipment. (See
"HOW TO RELEASE PRESSURE TRAPPED IN
THE HYDRAULIC SYSTEM".)
A Position the selection valve to the correct
position (either 1-way or 2-way circuit
selection) before mounting the equipment.
A Always select the correct valve position before
mounting the equipment (1-way or 2-way
circuit selection) to avoid sudden movement of
the equipment.
A Leaving the selection valve to 1-way circuit selection
and attaching 2-way circuit equipment may cause the
equipment to move (drop) suddenly due to its own
weight, as the tank line remains open, even with the
engine off.
AUTO IDLE (AI) OPERATION
1. Throttle potentiometer
With this potentiometer the operator can adjust the
engine speed when the auto idle control is activated.
2. Auto idle (AI) control switch
With this switch the auto idle control is turned on or off.
The auto idle control allows the engine speed to drop
to idle speed when the control levers are left in neutral
for longer than four seconds. If the control is activated,
the engine speed rises immediately to the preset rpm.
If the auto idle is not activated the throttle
potentiometer can be utilized to control engine speed
in a similar way to a conventional throttle control lever.
A It is possible that the auto idle may not function until
hydraulic oil warms up in the cold weather. Therefore
it is not recommended that the Auto Idle be activated
until the machine is completely warmed up.
A Before operating the control lever, check the auto idle
lamp.
A When operating in confined spaces or when loading
onto a vehicle, turn the auto idle control switch off
(lamp off). This is to prevent unwanted engine speed
increases when control levers are activated.
A The auto idle control, when selected by a switch,
provides the operator with a way to control engine
speed without moving the throttle potentiometer,
simply by not activating any control levers for about
four seconds after stopping work, and then to simply
restore a preset (by potentiometer) engine speed by
activating any control lever to return to work.
A The purpose of the system is to reduce fuel
consumption, noise and operator fatigue.
(1) Throttle potentiometer
(2) Auto idle control switch
(3) Auto idle lamp
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