单项选择题

（）can cause oil flow from sludge outlet of self cleaning separator.

A.Too much sludge accumulated in separator bowl
B.Diameter of gravity disc too large
C.High level tank lack of water
D.Oil input too rapidly

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单项选择题

A.Oil temperature too high
B.Diameter of gravity disc too large
C.Oil temperature too low
D.High level tank out of water

单项选择题

A.Oil inlet valve opening too quickly
B.Oil temperature too high
C.Diameter of gravity disc too small
D.Viscosity of oil too low

单项选择题

A.cut off the power
B.cut off the oil inlet
C.open guide water valve
D.close oil outlet value