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Operation
The time (1) indicates the current time of day in hours and minutes.
The speed indicator display indication (2) indicates the current engine speed.
The hour of operation indicator (3) indicates the hours of operation of the excavator performed up to now, regardless of the engine speed.
1
2
3
Check the displays and indicators during operation (page 72).
Stopping the engine
If the engine is to be stopped to take the excavator out of operation, the services for placing the ex-
cavator out of operation (page 87) must be carried out.
Push throttle lever in the following direction
Raise the left control console.
.
Turn the starter switch to the STOP position and remove the key.
If the engine cannot be turned off, please operate the engine stop knob switch (page 26).
Observation of the displays after starting and during operation
The operator must observe the display indicators and displays after starting and during operation.
The warning light (1) flashes red when a system fault or technical malfunction occurs. Stop the engine immediately! The warning light flashes yellow when the system issues a warning. Additionally, the display may show an error as in the figure on the right.
Clear the messages by taking appropriate steps, see
Troubleshooting: Display indications (page 108), or
contact skilled personnel if necessary.
72 RH418-8135-3
07/2015
Operation
If the engine oil pressure becomes too low during operation, the engine must be stopped immediately. The engine oil pressure indicator (1) lights up, the warning light (2) flashes red and the display message as in the figure on the right appears.
(lit up)
(flash-
If a fault occurs in the charging system during operation, the engine must be stopped immediately. The charge indicator (1) lights up, the warning light (2) flashes red and the display message as in the figure on the right appears.
(lit up)
(flash-
The needle of the coolant temperature gauge (1) should be in the area between "C" (cold) and "H" (warm). If the needle rises up to range "H" (Red), cool down the engine by changing into idle.
Allow the machine to idle for five minutes before switching off the engine!
Check the level of the coolant in the expansion tank.
STOP
Do not open the radiator cap
Risk of scalding.
Check the cooling system for leaks; if necessary, contact skilled personnel.
Check if the V-belt is very loose or broken; if necessary, contact skilled personnel.
Check if the air intake in the side panel, the radiator, and the oil cooler are very dirty. If necessary: Clean the
When the machine is being operated at or close to full capacity, the temperature of the coolant can rise a little higher than normal. The indicator Coolant temperature (1) blinks and the message appears in the display as shown in the figure on the right.
The message fades out after a short time and the indicator Coolant temperature blinks as long as the temperature remains elevated.
Operate the machine only with reduced loads until the operating temperature is normal again.
(flash-
RH418-8135-3
07/2015
73
Operation
If the coolant temperature is too high, cool down the engine by changing into idle. The display message as in the figure on the right appears.
Allow the machine to idle for five minutes before switching off the engine!
Check the level of the coolant in the expansion tank.
STOP
Do not open the radiator cap
Risk of scalding.
(flash-
Check the cooling system for leaks; if necessary, contact skilled personnel.
Check if the V-belt is very loose or broken; if necessary, contact skilled personnel.
Check if the air intake in the side panel, the radiator, and the oil cooler are very dirty. If necessary: Clean the
Watch the fuel gauge (1).
The needle indicates the relative fuel amount in the tank. As fuel is used up during operation, the needle slowly descends.
When the fuel tank is full, the needle points to the top (A).
When the fuel tank is empty, the needle points to the bottom (B).
When the fuel reserve indicator (2) is lit, there is only a little fuel is
left in the tank, refuel excavator (page 97).
When operating the excavator on a slope, the fuel is displaced to one side of the fuel tank. In this situation, when the fuel level is low, the fuel pump may not deliver enough fuel, causing the engine to stall. The machine must be refuelled and the fuel system bled.
When the fuel tank is empty, the machine cannot be operated. The machine must be refuelled and the fuel system bled.
Also stop the engine immediately if
the engine speed rises or drops suddenly,
abnormal noises are heard,
the excavating devices do not respond to the control lever as expected or
the exhaust fumes are black or white. When the engine is still cold, white smoke for a short time is normal.
74 RH418-8135-3
07/2015
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