CFESA Food Equipment Maintenance 1 — Questions and Answers
Question 1: How often should commercial dishwasher spray arm nozzles be inspected and cleaned?
- Annually
- Monthly
- Daily or per manufacturer PM schedule (Correct answer)
- Only when problems are reported
Correct answer: Daily or per manufacturer PM schedule
Commercial dishwasher spray arms should be inspected and cleaned daily or per the manufacturer's PM schedule to ensure effective warewashing.
Question 2: What is the minimum final rinse temperature required for a commercial high-temperature dishwasher to sanitize tableware?
- 140°F
- 160°F
- 180°F (Correct answer)
- 200°F
Correct answer: 180°F
High-temperature commercial dishwashers must achieve a minimum 180°F rinse temperature at the rack surface to sanitize tableware per food safety codes.
Question 3: During a preventive maintenance visit on a commercial ice machine, a technician should routinely perform:
- Replace the compressor every PM
- Clean condenser coils, sanitize water system, and inspect water filters and float valve (Correct answer)
- Replace refrigerant charge
- Replace all water hoses
Correct answer: Clean condenser coils, sanitize water system, and inspect water filters and float valve
Ice machine PM includes cleaning condenser coils, sanitizing the water distribution system, and inspecting filters and float valves to maintain performance and sanitation.
Question 4: What is the purpose of the deliming procedure on a commercial combi oven?
- Remove grease buildup from burners
- Remove mineral scale deposits from steam-generating components (Correct answer)
- Clean the convection fan blades
- Calibrate the cooking thermostat
Correct answer: Remove mineral scale deposits from steam-generating components
Deliming removes calcium and mineral scale deposits from steam generators and water circuits to maintain steam output and prevent equipment damage.
Question 5: On a commercial walk-in cooler, door gaskets should be replaced when:
- Every 6 months regardless of condition
- They show cracks, tears, or fail to create a proper seal (Correct answer)
- The door hinges are replaced
- Only when the cooler fails to maintain temperature
Correct answer: They show cracks, tears, or fail to create a proper seal
Door gaskets must be replaced when they are cracked, torn, or no longer create an airtight seal, as this causes excessive energy consumption and temperature fluctuation.
Question 6: What is the recommended maintenance interval for changing the oil in a commercial floor-type mixer?
- Every 30 days
- Every 6 months or per manufacturer specification (Correct answer)
- Only when noise is detected
- Annually regardless of use
Correct answer: Every 6 months or per manufacturer specification
Commercial mixer gearboxes require oil changes every 6 months or per the manufacturer's schedule to maintain lubrication and prevent gear wear.
CFESA Food Equipment Maintenance 1
How often should commercial dishwasher spray arm nozzles be inspected and cleaned?