🔍 Key Concepts

• Operation of a purifier/centrifuge bowl and how clean oil should look when separation is correct • Effect of air entrainment or emulsified water on the visual appearance of discharged oil • Function of adjustable tension devices (H and Q) and sealing/wearing parts (like V) in maintaining correct separation inside the bowl

💭 Think About

• Compare what properly separated oil should look like versus oil that still contains air or water. Which answer choice actually describes a fault that would cause an emulsion or foamy, milky appearance? • Look at the illustration and locate items H, Q, and V. From their positions, decide whether each one would mainly affect drive/tension, bowl closing, or sealing. Which of those functions would most directly affect oil/water separation? • Ask yourself: is a milky-white appearance something you would normally want from correctly operating fuel or lube oil purification equipment, or is it usually a sign that something is wrong?

✅ Before You Answer

• Verify whether proper operation of a purifier normally produces clear and bright oil or milky oil. • Confirm from the diagram what item H and item Q are mechanically connected to, and whether too little or too much tension there would cause slipping, improper bowl closing, or poor separation. • Check the role of item V at the bottom of the bowl assembly: is it a sealing or wearing part whose condition could let water or air mix with the oil and create a milky discharge?