Komatsu 830E, Shop Manual

Page: 700 / 783

N5-12 Operator Controls N05056
PANEL GAUGES, INDICATORS, AND CONTROLS (Figure 5-7)
Refer to Figure 5-7 for the following descriptions.
(1, Figure 5-7) KEY SWITCH
The key switch is a three position (Off, Run, Start)
switch.
• When the switch is rotated one position
clockwise, it is in the "run" position and all
electrical circuits (except "start") are activated.
• When rotated fully clockwise to "start" position
and the Selector Switch is in "NEUTRAL", the
operator must hold this position until the engine
starts. "Start" position is spring loaded to return to
"run" when the key is released.
• With the truck stopped, turn counterclockwise to
OFF for normal engine shutdown.
An engine shutdown switch located on the center
console may be used if the key switch does not shut
down the engine.
NOTE: A ground level shutdown switch is located
near the diagonal ladder steps on right front corner of
the truck.
(2, Figure 5-7) ENGINE SHUTDOWN SWITCH with
TIMER DELAY)
The timer delayed, engine
shutdown switch is a 3-posi-
tion, rocker type switch with
OFF, ON and Momentary posi-
tions. When used, the engine
is allowed to idle for approxi-
mately 5 minutes before actual
shutdown occurs. The delayed
shutdown feature allows the
engine to cool down slowly, reducing internal temper-
atures as coolant is circulated through the engine.
Operation
1. Press the top of the switch to select the ON
(center) position.
2. Press top of switch again to activate the timer
delay (momentary position). Release switch
and allow it to return to the ON position.
3. Turn the key switch to the OFF position.
When the delay system has been activated, the "5
Minute Idle Delay" (amber) lamp on the overhead
display will illuminate, indicating the shutdown timing
sequence has started. The engine will then continue
to idle for approximately 5 minutes and then shut
down automatically, providing the key switch is OFF.
The Engine Shutdown Timer
DOES NOT turn off the
24VDC electrical power. The
keyswitch must be turned OFF
to cause the engine to shut
down after the timing sequence
is complete. When the engine
stops, the bleeddown timer will
activate and the 24VDC electrical circuits will turn
OFF.
To Cancel Delay Sequence
Press the bottom of the switch to select the OFF
position.
• If the keyswitch is
OFF , the engine will stop.
• If the keyswitch is ON , the engine will continue to
run.
(3, Figure 5-7) FOG LIGHTS (OPTIONAL)
Fog Lights are optional equip-
ment that are useful in foggy
conditions and heavy rain.
Pressing the top of the rocker
switch turns the lights ON.
Pressing the bottom of the
switch turns the lights OFF.
(4, Figure 5-7) LADDER LIGHT SWITCH
The switch turns the ladder
lights ON or OFF. Pressing the
top of the rocker switch turns
the lights ON. Pressing the bot-
tom of the switch turns the
lights Off. Another switch is
mounted at the front right of
truck near the base of ladder.
(5, Figure 5-7) BACKUP LIGHT SWITCH
The Manual Backup Switch
allows the backup lights to be
turned on, providing added vis-
ibility and safety when the
Selector Switch is not in
REVERSE position.
When the switch is pressed
toward the ON position, the
"Manual Back Up Light" indicator on the overhead
display panel will be illuminated.