SWDM40 OPERATION & MAINTENANCE MANUAL
3.3 ENGINE USE
3.3.1 Precautions for Engine Use
1. When air temperature is over -10℃, engine can start without starting auxiliary device
(such as air intake preheater); When air temperature is lower than -10
℃
,engine will preheat
automatically, after that it’s able to start. Air intake preheating can be used with the temperature
over than -20℃.
2. Check coolant level, engine oil level and fuel level.
3. Starting time should not over than 30s. The interval between twice starting should more
than 2 minutes. If fail three times continuously, inspection should be done prior to next starting.
4. Within 15 seconds after starting, pay attention to check the prompt of engine oil pressure
alarm icon on the monitoring interface. If there’s an alarm, please stop the machine to check
causes immediately.
5. When air temperature is low, the machine should be preheated after initial starting, and it
should be operated till engine water temperature up to 60℃.
6. If there’s air in the fuel system, that may result in difficulty for starting. Restart after air is
exhausted completely.
3.3.2 Precautions for Engine Preheating and Idling
1. It’s forbidden to run engine at fast speed when the machine is not warmed up. When
starting at low temperature, engine speed should be increased gradually.
2. Don’t run engine at idling speed more than 10 minutes. If too long time for idling, oil
nozzle may be clogged by the carbon deposition and cause the sticking of piston ring and air
valve, affecting engine performance.
3.3.3 Precautions for Engine Shutdown
After running for a long time or with large load, the machine should be idled for 3 to 5
minutes before shutdown. Failure to comply may result in engine component overheating,
damaging the bearing of supercharger.
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