🔍 Key Concepts

• Behavior of a high pressure cutout switch in a water‑cooled system • How condenser water flow or heat rejection affects discharge pressure • Effect of refrigerant charge and valve leakage on system pressures and cycling

💭 Think About

• Think about what specific condition will repeatedly drive the discharge pressure above the cutout setting, then let it fall back, over and over. • Which of the listed problems would most directly cause discharge pressure to rise too high in a water‑cooled system? • For each choice, ask yourself: would this more likely cause high head pressure, low suction pressure, or just loss of capacity without tripping the high‑pressure cutout?

✅ Before You Answer

• Identify which options would clearly cause high head (discharge) pressure, not low pressure or just inefficiency. • Consider whether a slightly or excessively leaking discharge valve would cause pressure to build up on the high side or bleed back to the low side. • Think about whether being low on refrigerant normally causes a high‑pressure safety to trip, or a low‑pressure condition instead.