CPO Pool Equipment and Mechanical Systems Questions and Answers Flashcards
6 cards from real CPO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CPO Pool Equipment and Mechanical Systems Questions and Answers flashcards as text
What is the main advantage of a variable-speed pump over a single-speed pump?
Answer: Energy savings of up to 90% at low speeds
Because power consumption varies with the cube of speed, running a pump at half speed uses only about one-eighth the energy.
What type of pool heater is generally considered most energy efficient?
Answer: Heat pump heater
Heat pump heaters move heat from the ambient air into the water rather than generating it, achieving COP (coefficient of performance) values of 3–6.
What does a pool heater's BTU rating indicate?
Answer: The amount of heat output per hour
BTU (British Thermal Unit) per hour measures the heater's heat output capacity, which determines how quickly it can raise pool water temperature.
What is the purpose of a pressure gauge on a pool filter?
Answer: To monitor filter pressure and signal when backwashing is needed
The pressure gauge indicates filter head pressure; a rising pressure means the filter media is collecting debris and will soon need backwashing or cleaning.
What is the purpose of a multiport valve on a sand filter?
Answer: To direct water flow for different operations such as filter, backwash, and rinse
The multiport valve has several positions (Filter, Backwash, Rinse, Waste, Recirculate, Closed) that redirect water through different paths in the filter.
What is the minimum recommended turnover rate for most commercial swimming pools?
Answer: Every 6 hours
Most state health codes require the entire pool volume to pass through the filtration system at least once every 6 hours for adequate sanitation.