Hotel Service Unit 12 Q3 Quiz

Hotel Service Unit 12 Air Con Q3

1 / 5

Which of the following is considered a primary breeding ground for legionella bacteria in air conditioning systems?

B) Cold water storage tanks where stagnant water may accumulate

A) High-temperature heating coils

C) Air filters in the ductwork

D) Main air intake vents

2 / 5

Why are cooling towers considered a risk area for legionella bacteria?

C) They have closed water circuits

B) They involve water evaporation, which creates mist that can spread bacteria if contaminated

A) They only process warm air

D) They do not allow any bacterial growth

3 / 5

Which of the following is an effective method to reduce the risk of legionella in air conditioning systems?

C) Using only warm water in humidifiers

B) Maintaining hot water at a minimum of 60°C and cold water below 20°C, with regular cleaning and disinfection of water storage areas

A) Increasing the overall system temperature to 10°C

D) Sealing all air ducts

4 / 5

Why might hot water systems in air conditioning be a breeding ground for legionella?

B) They maintain temperatures conducive to legionella growth if they fall below 60°C

A) They prevent any bacterial presence

C) They continuously circulate without stagnation

D) They always maintain extremely high temperatures

5 / 5

Why are humidifiers and misting devices in air conditioning systems potential breeding grounds for legionella?

C) They heat the air directly

D) They contain no water, preventing bacterial growth

B) They create fine water droplets that can spread bacteria if contaminated

A) They circulate water continuously

Your score is