SWDM40 OPERATION & MAINTENANCE MANUAL
3.3.4 Correct Filling of Coolant
1. Don’t fill in coolant too rush. Failure to comply, air in the engine water sleeve may can’t
be exhausted.
2. After filling, check expansion tank level after idling for 1 minute, and then fill it up to the
limit.
3. After filling, tighten up the cap of expansion tank. Change the expansion tank cap when
change coolant regularly. The coolant of same type should be used.
3.3.5 Other Operation Precautions
1. Check water temperature in the monitoring interface, if coolant is still lower than 60℃
or 100℃, stop the machine and find causes.
2. Always check engine oil value, prohibit engine running when engine oil pressure is too
low. Engine oil pressure should be not lower than 138 Kpa, and 330Kpa—380KPa when at rated
rotation speed. The minimum engine oil pressure for protection at idling speed is 69 Kpa.
3. Always check engine oil level, coolant level and fuel level.
4. Avoid running engine when there’s a failure. Pay attention to engine performance, sound
and some predictable changes. If there’s any abnormal condition, stop the engine to check.
5. It’s not allowed to run engine at peak speed with full load for 30 seconds. Failure to
comply may damage the engine.
6. It’s not allowed to run engine beyond maximum rotation speed. Failure to comply may
damage the engine.
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