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4.2.3.
After starting the engine
A)
Engine warm-up and machine warm-up
The normal operating temperature of hydraulic oil is 50°C~80°C. Operation with
hydraulic oil below 20°C will damage the hydraulic components. Therefore, if the
oil temperature is below 20°C, the following warm-up procedure must be
followed before starting operation.
1)
The engine runs at 200rpm speed for 5min
2)
The engine throttle is placed in the middle position for 5~10min
3)
At this speed, extend and retract each cylinder several times and gently operate
the rotary and travel motors to warm them up. When the oil temperature reaches
20°C or above, operator can start work. If necessary, extend or retract the bucket
cylinder to the end of its stroke to warm up the hydraulic oil at full load, but not
more than 30 seconds at a time. Repeat until the oil temperature requirement is
reached.
B)
Check after starting the engine
1)
Check if the indicator lights are off.
2)
Check oil (lubricating oil, fuel) and water leaks.
3)
Check the sound, vibration, heating, smell and instruments of the machine for any
abnormalities. If any abnormalities are found, repair immediately.
4.2.4.
Shut down the engine
ATTENTION: If the engine is suddenly shut down before it cools down, it
will greatly shorten the engine life. Therefore, do not turn off the engine
abruptly except in an emergency.
If the engine is overheated, do not shut it down suddenly, but run it at idle
speed to cool it down gradually, and then shut it down.
1)
Run the engine at low idle speed for about 5 minutes to allow it to cool down
gradually.
