单项选择题

Before the oily water separator put into operation, it should be （）

A.filled with bilge water
B.filled with oil
C.filled with clean water
D.be emptied

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单项选择题

The time of discharging oil is short, but oily water separator discharges oil frequentlyThe possible reason is （）

A.the sensor of low oil level is fully covered by sludge
B.the coarse strainer before the pump in suction system is clogged
C.the screw pump is worn seriously and volumetric efficiency is decreased
D.bilge suction value is clogged

单项选择题

The pressure difference of the gauge on the oily water separator increases greatly, the reason is（）

A.the filter is clogged
B.bilge suction value is clogged
C.suction value and discharge value of the pump do not open fully
D.screw pump is worn seriously and volumetric efficiency is decreased

单项选择题

Oily water separator mis-alarms, the most possible reason is （）

A.separating oil too fast
B.the sensor flushed badly
C.the discharge solenoid value out of order
D.too low heating temperature