Hotel Service Unit 12 Q3 Quiz

Hotel Service Unit 12 Air Con Q3

1 / 5

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

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

C) They heat the air directly

D) They contain no water, preventing bacterial growth

A) They circulate water continuously

2 / 5

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

A) High-temperature heating coils

B) Cold water storage tanks where stagnant water may accumulate

D) Main air intake vents

C) Air filters in the ductwork

3 / 5

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

D) They always maintain extremely high temperatures

C) They continuously circulate without stagnation

A) They prevent any bacterial presence

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

4 / 5

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

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

C) They have closed water circuits

5 / 5

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

A) Increasing the overall system temperature to 10°C

D) Sealing all air ducts

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

C) Using only warm water in humidifiers

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