Komatsu HB215LC-3, Operation & Maintenance Manual

Page: 101 / 492

ENGINE OVERRUN CAUTION LAMP
The engine overrun caution lamp warns about the overspeed of
engine.
When engine overspeeds
The caution lamp lights up in red, and action level “L02” is dis-
played.
The alarm buzzer sounds intermittently.
Since overspeed can damage the engine and hydraulic compo-
nents, stop the work immediately and operate the machine at
low travel speed until the engine overrun caution lamp goes
out.
RADIATOR COOLANT LEVEL CAUTION LAMP
Radiator coolant level caution lamp warns about low level of ra-
diator coolant.
When the coolant level is continuously low
The caution lamp lights up in red, the alarm buzzer sounds,
and the action level “L02” is displayed.
Stop the operation, move the machine to a safe place, check
the coolant level in the radiator, and add the coolant.
For details, see “METHOD FOR CHECKING COOLANT LEV-
EL, ADDING COOLANT”.
When the coolant level is low
The caution lamp lights up in yellow, and the action level “L01” is displayed.
The radiator coolant is insufficient.
Check the coolant level in the reservoir tank of the radiator and add coolant.
For details, see “METHOD FOR CHECKING COOLANT LEVEL, ADDING COOLANT”.
If the coolant level drops again in a short time, the coolant may be leaking from the radiator.
Ask your Komatsu distributor for the inspection and maintenance.
CHARGE LEVEL CAUTION LAMP
Charge level caution lamp warns about abnormality in the
charging system while the engine is running.
When abnormal
The caution lamp lights up in red and indicates action level
“L03”.
The alarm buzzer sounds intermittently.
Charging is not being performed normally while the engine is
running.
Stop the engine and check the alternator belt for damage, then
ask your Komatsu distributor for inspection and maintenance.
OPERATION EXPLANATION OF COMPONENTS
3-29