In fact, the low temperature environment has brought a test to the engine and hydraulic system of the dynamic compaction machine. Low temperature directly leads to the increase of the viscosity of hydraulic oil and engine oil, resulting in poor liquidity, increased resistance and low work efficiency. Therefore, in order to improve the working efficiency and service life of the dynamic compaction machine, it is very necessary for the dynamic compaction machine to conduct cold start preheating.
The dynamic compaction machine must be preheated step by step before winter construction. The construction can be started only when the hydraulic oil temperature reaches above 20 ℃ and the engine cooling water temperature reaches above 60 ℃.
Pre use inspection: check the engine coolant level, engine oil level and hydraulic oil level to ensure that the liquid volume is sufficient. Check the water accumulation in the oil-water separator and drain the water in time.
Preparation before preheating: remove the ram from the coupler (the whole machine has no load), insert the key and power on without starting the engine. Check whether there is any fault alarm on the display screen in the cab, ensure that there are no pedestrians and obstacles around the vehicle, and sound the horn.
Turn the ignition switch to start the engine, and the engine will idle at no load (about 800 RPM) for about 3 minutes (without operation). Preheat the engine and fully lubricate all engine parts.
Step on the accelerator pedal (or adjust the hand throttle), gradually increase the engine speed to about 1500 rpm, and run for about 5 minutes under no-load state (no operation action).
Keep the engine speed at about 1500 rpm, open the pilot switch upward, operate the handle of the main winch, lift and lower the empty hook, and quickly preheat the hydraulic oil.
Observe the information on the display screen. When the hydraulic oil temperature reaches 20 ℃ and the engine water temperature reaches 60 ℃, the preheating can be stopped and normal construction can be carried out.
The lessor of the dynamic compaction machine reminds you that for different ambient temperatures and service conditions, you need to use specific types of hydraulic oil and engine fuel.
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