Komatsu PC30MR-5 Operation & Maintenance Manual page 93

OPERATION
REMARK
• The overheat prevention system is actuated when the graduation of gauge goes in red range (A).
The engine runs at low idle.
Engine coolant temperature caution lamp (D) lights up in red.
The alarm buzzer sounds.
It keeps sounding until the graduation of gauge goes in green range (B).
• When starting the engine, if the engine coolant temperature gauge is in white range (C) and engine coolant
temperature caution lamp (D) lights up in white, the engine coolant temperature is low. Accordingly, perform
the warm-up operation.
FUEL GAUGE
Fuel gauge displays the fuel level in 19 graduations.
When the graduation of gauge is in green range (A) during op-
erations, it is normal.
When the graduation of gauge goes in red range (B) during op-
erations, the remaining fuel level is 9 ℓ or less {2.4 U.S.Gal or
less} , so check the fuel level and add it.
(A) Green range: Normal
The remaining fuel level is over 9 ℓ {over 2.4 U.S.Gal} .
Fuel level caution lamp (C) lights up in blue.
(B) Red range: The remaining fuel level is low
The remaining fuel level is 9 ℓ or less {2.4 U.S.Gal or less} .
Fuel level caution lamp (C) lights up in red.
OFF: Abnormal
If communication error occurs or data is not received, the graduation of gauge goes out.
REMARK
• The graduation of gauge may not indicate correctly for a short time after the starting switch is turned to ON
position, but this is not a trouble.
• The graduation of gauge may not indicate correctly when the machine is operated on a slope or it is stop-
ped, but this is not a trouble.
SERVICE METER / CLOCK
The service meter/clock shows the total hours of operation of the machine or the present time.
When the engine is running, the service meter advances even if the machine is not moving.
The service meter advances 0.1 every 6 operation minutes, regardless of the engine speed.
• Service meter display
WENAM00150
EXPLANATION OF COMPONENTS
3-27