CPO Pool & Spa Maintenance & Operations 2

Question 1

What is the recommended turnover rate for a standard commercial swimming pool?

Accepted Answer

Every 6 hours

Answer

Most health codes require commercial pools to turn over the entire water volume every 6 hours through the filtration system.

Question 2

Which type of filter requires backwashing to clean it?

Accepted Answer

Both sand and DE filters

Answer

Both sand filters and diatomaceous earth (DE) filters use backwashing as their primary cleaning method, reversing water flow to flush out trapped debris.

Question 3

When should a CPO operator perform a full water chemistry test?

Accepted Answer

At least twice daily during peak season

Answer

Commercial pool operators should test water chemistry at least twice daily, especially during periods of heavy bather load.

Question 4

What is the primary purpose of a skimmer in pool operations?

Accepted Answer

To remove surface debris before it sinks

Answer

Skimmers draw water from the pool surface to remove floating debris such as leaves, oils, and insects before they sink and decompose.

Question 5

A pool operator notices the pressure gauge on the filter is reading 10 psi above the clean starting pressure. What action is required?

Accepted Answer

Backwash or clean the filter

Answer

A pressure increase of 8–10 psi above the clean starting pressure indicates a dirty filter that needs backwashing or cleaning.

(CPO) Certified Pool and Spa Operator Practice Test

(CPO) Certified Pool and Spa Operator Practice Test

CPO Pool & Spa Maintenance & Operations 2