🔍 Key Concepts

• High pressure cutout switch function in a refrigeration system • Relationship between condenser pressure and cooling water flow • How refrigerant charge and evaporator frost affect pressure on the high side vs. low side

💭 Think About

• Ask yourself: which condition would make the condenser unable to reject heat efficiently, causing pressure on the high side to rise? • Consider which options would more likely cause low pressure problems instead of high pressure problems. • Think about how increasing vs. decreasing condenser cooling water flow changes condenser temperature and pressure.

✅ Before You Answer

• Identify which components are on the high-pressure side of the system (compressor discharge and condenser). • Decide which listed problem would cause high condenser temperature and pressure, not low. • Eliminate any choices that would reasonably cause a low-pressure cutout rather than a high-pressure cutout.