Ammann AVH 5020 Originalbetriebsanleitung Seite 42

3. Operation
3.5.5 Automatic engine cut-off (AVH 5020 – 6030)
Machines are equipped with a safety engine cut-off. The engine
switches-off automatically if
• the oil pressure is too low
• the film of lubrication oil is unstable as a result of
• excessively high oil temperature
• incorrect baisc viscosity
• dilution of the oil by fuel or water
• the lubricating oil filter is blocked
• a leakage in the oil relief valve
• leakages in pipes and seals
• the oil pumps and bearings are worn.
If the oil level is too low or the machine is tilted too
much, it can lead to an admixture of air and thus to
a loss of viscosity.
Attention
If the engine cuts-out because the supply of lubricating oil is in-
sufficient, proceed as follows :
• Locate the fault and have it rectified.
• Press the lever few seconds.
• Start the engine.
3.5.6 Air filter maintenance indicator
The motors are equipped with a maintenance indicator for air fil-
ters. In case of pollution of the filter element the rubber bellow
contracts by underpressure.
In this case, switch-off the motor and clean or replace the air-fil-
ter.
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