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Operation
Safety, Operation and Maintenance Manual - Sep 2012
4-26
SY115C9/135C/155H Crawler Hydraulic Excavator
●
In case of emergency, abnormal running of engine, or other faults, turn the start switch
to OFF position and shut off the engine.
●
Never operate any control lever or pedal suddenly when temperature of hydraulic oil is
low. Make sure to preheat the machine till temperature of hydraulic oil rises to a suit-
able point.
●
Failure code 37 will be displayed when hydraulic oil becomes abnormal in tempera-
ture.
●
If the machine has not been preheated completely, it may fail to respond or move sud-
denly and quickly during operation, and cause serious accidents. Complete warming-
up is especially necessary in cold region.
●
Never accelerate your machine suddenly before finishing preheat operation. Never
continuously run the engine at low or high speed for more than 20 minutes, which
may cause leaks in oil supply pipe of turbo charger. If the engine has to be run at idle
speed, it is necessary to add load to it or run it at a moderate speed.
4.2.2 Warm-up operation
Never enter into operation immediately after starting the engine. Proceed and check the following
items:
1. Adjust fuel control dial to make the engine run unloaded at low speed (about 1,100 rpm) for
about
fi
ve minutes.
2. Adjust fuel control dial to make the engine run at moderate speed (about 1,400 rpm), and then
slowly operate the bucket for
fi
ve minutes.
3. Adjust fuel control dial to make the engine run at high speed, and operate the boom, arm and
bucket for 5-10 minutes.
4. Cycle each action of excavator for several times before ending the preheat operation.
5. Check all gauges for normal display after preheating the machine.
Continue to preheat the machine if coolant temperature (see display) and hydraulic oil tem-
perature (50~80
℃
) fail to reach normal values.
6. Check exhaust color, noise or vibration for abnormality. Repair it if any.
4.2.3 Selecting a working mode
Press the working mode selection key F1 on machine monitor to choose a mode you want.
For more information see
“
Working mode
”
on page 4-37
.
WARNING
Содержание SY115C9
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Страница 403: ...Specifications SY115C9 135C 155H Crawler Hydraulic Excavator 7 2 Safety Operation and Maintenance Manual Aug 2012 ...