Doosan DX700LC, Operation And Maintenance Manual

Page: 94 / 314

OP001121 Operating Controls
2-22
1. Fuel Gauge
Shows remaining fuel quantity in tank.
BLUE ZONE ( ) - Indicates a normal fuel quantity.
RED ZONE ( ) - Indicates that the fuel level is low.
If the gauge pointer moves into the red zone, the fuel level
symbol will turn "ON", and be display in the screen. Stop
operation and immediately and add fuel.
NOTE: See “Abnormal State Warning Symbols” on
page 2-29, for location of this warning symbol
and others.
Check the fuel level on firm, level ground.
2. Engine Coolant Temperature Gauge
The colored bands indicate the temperature of the engine
coolant.
WHITE ZONE ( ) - Indicates temperature is lower than
the normal operating temperature.
BLUE ZONE ( ) - Indicates temperature is within the
normal operating range.
RED ZONE ( ) - Indicates temperature is too high.
During operation, the pointer must be in the blue zone.
If the gauge pointer moves into the red zone, the engine
coolant temperature warning light will turn "ON", a warning
buzzer will sound, and the engine speed will be
automatically reduced. Allow the engine to run at low idle
speed until the temperature gauge registers in the blue
zone again. When the blue zone is reached, allow the
engine to idle for an additional three - five minutes before
shutting down the engine. If not allowed to idle, heat surge
may develop which will damage the engine. Allowing the
engine to idle will dissipate heat. Check the coolant level,
look for a loose fan belt, inspect for debris around radiator,
and so on.
When the temperature reaches the normal range, the
engine speed will automatically recover.
E F
FG013666
Figure 41
C H
FG013672
Figure 42