CFESA Food Equipment Maintenance 2 — Questions and Answers
Question 1: What NSF standard governs the design, construction, and material requirements for commercial food equipment?
- NSF/ANSI 2 (Correct answer)
- NSF/ANSI 3
- NSF/ANSI 51
- NSF/ANSI 169
Correct answer: NSF/ANSI 2
NSF/ANSI 2 covers the minimum food zone design and fabrication requirements for commercial food equipment to ensure cleanability and sanitation.
Question 2: A commercial steam kettle is producing inconsistent temperatures. The first component to check is:
- The steam trap
- The jacket pressure gauge and steam inlet pressure (Correct answer)
- The drain valve
- The mixer attachment
Correct answer: The jacket pressure gauge and steam inlet pressure
Inconsistent steam kettle temperatures are often caused by low or fluctuating steam supply pressure; checking the jacket pressure gauge and inlet pressure is the first diagnostic step.
Question 3: What is the primary purpose of a grease trap on commercial cooking equipment drain connections?
- Prevent drain odors from entering the kitchen
- Collect fats, oils, and grease to prevent sewer system blockage (Correct answer)
- Filter food particles from drain water
- Reduce water pressure in drain lines
Correct answer: Collect fats, oils, and grease to prevent sewer system blockage
Grease traps intercept fats, oils, and grease (FOG) from wastewater before it enters the sewer system, preventing blockages and regulatory violations.
Question 4: When calibrating a commercial convection oven thermostat, a technician finds it reads 25°F high. The correct action is:
- Replace the thermostat immediately
- Adjust the calibration screw per manufacturer specification to correct the offset (Correct answer)
- Advise the operator to set the temperature 25°F lower
- Replace the temperature probe
Correct answer: Adjust the calibration screw per manufacturer specification to correct the offset
Most commercial oven thermostats have an adjustment screw that allows the technician to calibrate the setpoint to match actual oven temperature.
Question 5: A commercial refrigerator evaporator fan motor runs but the unit is not maintaining temperature. After checking refrigerant charge, the next item to inspect is:
- The condenser fan motor
- The evaporator coil for ice blockage and defrost system operation (Correct answer)
- The door hinges
- The compressor oil level
Correct answer: The evaporator coil for ice blockage and defrost system operation
An evaporator coil blocked with ice restricts airflow and heat transfer; a faulty defrost system is a common cause of inadequate cooling despite a properly charged system.
Question 6: What does a commercial warewasher's booster heater do?
- Preheat the wash water
- Raise incoming water temperature to the required 180°F final rinse temperature (Correct answer)
- Heat the detergent solution
- Maintain water temperature in the tank between cycles
Correct answer: Raise incoming water temperature to the required 180°F final rinse temperature
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.
CFESA Food Equipment Maintenance 2
What NSF standard governs the design, construction, and material requirements for commercial food equipment?