🔍 Key Concepts

• Review the function of the sliding bowl / operating slide (F) in an automatic, self‑cleaning purifier centrifuge. • Understand the difference between sealing (closing) water and operating (opening) water, usually supplied through connections like P and Q. • Focus on what happens during normal separation operation versus during the self‑cleaning (sludge discharge) cycle.

💭 Think About

• Ask yourself: during steady, normal purification (not discharging sludge), should the bowl ports be open or closed, and what position must component F take to achieve that? • Which water line, P or Q, is typically used to keep the bowl CLOSED (in its normal operating condition), and which is used momentarily to shift the slide for the self‑cleaning cycle? • When water pressure is removed from a chamber, does the spring move component F, or does it stay where it was from the last water‑pressure action? How does that relate to the choices mentioning spring force versus water flow alone?

✅ Before You Answer

• Identify clearly whether normal operation means the bowl is closed (no sludge discharge) or open (ports uncovered). • Determine which connection, P or Q, supplies water that acts on the underside of F during normal running, and which is only used during the self‑cleaning cycle. • Confirm whether the spring on F is designed to move the slide to its operating (closed) position or to return it after discharge; this will help eliminate choices that claim the wrong cause for F’s up/down position.