Certified Pool Operator CPO Exam Study Guide

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Certified Pool Operator (CPO) Exam Study Guide Expected Questions and Answers (Verified Answers)

• Ideal bromine level in a pool and spa is

Ans 3ppm to 6ppm

• Ideal chorine level for a pool is

Ans 1ppm to 5ppm

• Maximum level of chlorine in a pool is

Ans 5ppm

• If you see bubbles coming up from a return, the possible cause could be

Ans a bad seal on the hair/lint strainer - it is not properly closed, or air is in the filter, or water level is too low

• The hypochlorinator doesn't work. What could be a possible cause for this?
• no chlorine in the vat 1 / 2

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• the injection fitting is clogged
• the tube assembly needs to be changed
• all of the above

Ans d) all of the above

• You go to the pool in the morning and notice the chlorine is at zero. You hand-feed

chlorine, how long to do you have to wait to allow people to go into the pool.

• no time
• 15 minutes
• 30 minutes

d) One day

Ans c) 30 minutes

• When doing the pH test and the sample turns yellow, what does it mean?

Ans pH is too low

• When doing the pH test and the sample turns purple, what does it mean?

Ans pH is too high

• What do you do if a patron complains of a chlorine smell and their eyes are

stinging?Ans Raise the chlorine to Breakpoint Level.

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