Komatsu WA500-6H, Operation & Maintenance Manual, Page: 127 / 412

Operation 3.2 Explanation of components
WA500-6H – VEAM430100
3-61
27. Rpm set on-off switch
Use this switch (27) to turn the RPM SET system ON-OFF.
Position (a): System ON
Indicator lamp lights up.
Position (N): System OFF
Indicator lamp goes out.
Position (b): System ON, auto deceleration ON
Indicator lamp lights up.
In this case, if the transmission shift is at neutral and the work
equipment control lever is not operated for a certain time (5-10
seconds), the engine automatically returns to low idling speed. If
the accelerator pedal is depressed and the engine speed
exceeds the set speed, the engine will return to its original
speed.
In addition, even if the work equipment control lever is operated,
the engine will return to its original speed.
28. Rpm set idle up-down selector switch
CAUTION
If the RPM set ON-OFF switch or engine starting switch are
turned OFF, the idle-up or idle-down speed data in memory are
cleared. When setting again, start the procedure from the begin-
ning. To actuate this switch, check that the RPM set ON/OFF
switch is at the ON position or the auto deceleration is at the ON
position. If they are at the ON position, the ON/OFF switch indi-
cator lights up. The setting can be cancelled by turning the RPM
set ON-OFF switch or by depressing the right brake.
Use this switch (28) to hold the engine speed at the desired
speed.
Position (a):
Use this position when setting the engine speed and when rais-
ing the set speed.
z When using the accelerator pedal
Depress the accelerator pedal to raise the engine speed to
the desired speed, then press portion (a) of the switch. The
speed is recorded in memory.
z When using the RPM set idling up/down selector switch
Keep portion (a) of the switch pressed for at least 0.5 sec to
raise the engine speed. When the engine reaches the
desired speed, release the switch. The new speed is
recorded to memory and the setting is made.
GK050067
a
b
N
GK050068
a
b