CFESA Study Guide 2026

A booster heater raises the building hot water supply (typically 120°F) to the 180°F minimum required for sanitizing the final rinse in high-temperature dishwashers.

The CFESA certification exam evaluates a technician's technical knowledge across refrigeration, gas, electrical, and mechanical systems used in commercial food service equipment.

Bearings are mechanical components designed to support moving parts and allow them to rotate or slide smoothly with minimal friction. By reducing friction, they decrease energy loss, minimize wear and tear on components, and extend the lifespan of the equipment. They are crucial for the efficient operation of motors, shafts, and other rotating assemblies.

Ice machine PM includes cleaning condenser coils, sanitizing the water distribution system, and inspecting filters and float valves to maintain performance and sanitation.

Before attempting any repairs, a technician must first understand the problem. A thorough visual inspection allows for the identification of obvious issues like leaks, loose connections, or unusual wear, while observing symptoms helps narrow down potential causes. This initial diagnostic step is crucial for efficient and accurate troubleshooting, guiding subsequent testing and repair actions.

A low refrigerant charge can cause the low-pressure control to cycle the compressor on and off rapidly as pressures equalize quickly.