CB CB Equipment Maintenance and Sanitation 1 — Questions and Answers
Question 1: How often should a portafilter basket be backflushed with a cleaning tablet on a commercial espresso machine?
- Once a week
- At the end of each shift or daily (Correct answer)
- Once a month
- Only when visibly dirty
Correct answer: At the end of each shift or daily
Commercial espresso machines should be backflushed with a cleaning tablet (such as Cafiza) at the end of each shift or daily to remove coffee oil buildup and prevent rancidity.
Question 2: What is the correct procedure for cleaning a steam wand after each use?
- Wipe with a dry cloth only
- Purge steam briefly, then wipe with a damp cloth (Correct answer)
- Soak in cold water for 10 minutes
- Run cold water through the steam tip
Correct answer: Purge steam briefly, then wipe with a damp cloth
After each use, the steam wand should be purged with a brief burst of steam to clear milk from the tip, then immediately wiped down with a dedicated damp cloth to prevent milk from hardening.
Question 3: What chemical is most commonly used for espresso machine group head backflushing?
- Bleach solution
- Espresso machine cleaner tablets (e.g., Cafiza/Puly Caff) (Correct answer)
- Dish soap
- White vinegar
Correct answer: Espresso machine cleaner tablets (e.g., Cafiza/Puly Caff)
Food-safe espresso machine cleaners like Cafiza or Puly Caff are specifically formulated to dissolve coffee oils and residues during backflushing without damaging machine components.
Question 4: How frequently should the grinder burrs be inspected or replaced in a high-volume café?
- Every 10 years
- Every 500–1,000 lbs (225–450 kg) of coffee ground (Correct answer)
- Every week regardless of volume
- Only when grind time increases by 1 second
Correct answer: Every 500–1,000 lbs (225–450 kg) of coffee ground
Grinder burrs typically need replacement every 500–1,000 lbs of coffee ground, as dull burrs produce inconsistent particle size, leading to uneven extraction and poor espresso quality.
Question 5: Which part of the espresso machine must be descaled regularly in areas with hard water?
- The portafilter handle
- The boiler and internal water passages (Correct answer)
- The drip tray
- The group head gasket
Correct answer: The boiler and internal water passages
Mineral scale from hard water accumulates in the boiler and water passages over time, reducing heating efficiency and potentially damaging the machine if not descaled regularly.
Question 6: What is the recommended method for cleaning the group head gasket and screen?
- Replace weekly without cleaning
- Brush with a group head brush during daily cleaning and soak periodically in cleaning solution (Correct answer)
- Rinse with cold water only
- Clean with steel wool to remove deposits
Correct answer: Brush with a group head brush during daily cleaning and soak periodically in cleaning solution
The group head screen and gasket should be scrubbed with a dedicated group head brush during daily cleaning and periodically soaked in cleaning solution to remove compressed coffee puck residue.
CB CB Equipment Maintenance and Sanitation 1
How often should a portafilter basket be backflushed with a cleaning tablet on a commercial espresso machine?