CPO Operation and Maintenance Questions and Answers 2

Question 1

What daily operational checks should a CPO perform before opening a public pool?

Accepted Answer

Test water chemistry, inspect safety equipment, verify drain covers, and check circulation system

Answer

Only check water temperature

Answer

Just turn on the pumps

Answer

Only check the chlorine level

Question 2

How often should pool filter sand be replaced in a commercial pool?

Accepted Answer

Every 3 to 5 years or when backwashing no longer restores normal pressure

Answer

Every 6 months

Answer

Annually

Answer

Sand never needs replacement

Question 3

What is the proper procedure for cleaning a cartridge filter element?

Accepted Answer

Turn off the pump, release pressure, remove cartridge, rinse with a garden hose between each pleat

Answer

Blast it with a high-pressure washer

Answer

Simply shake off debris and reinstall

Answer

Soak in muriatic acid for 24 hours

Question 4

What preventive maintenance should be performed on a pool heater annually?

Accepted Answer

Inspect heat exchanger for scale, clean burner assembly, check gas connections, and verify safety controls

Answer

No maintenance required if working

Answer

Only check the thermostat

Answer

Replace the entire heater annually

Question 5

What is the recommended practice for managing a pool during a thunderstorm?

Accepted Answer

Clear the pool and deck when thunder is heard, wait 30 minutes after the last thunder or lightning

Answer

Continue if lightning is more than 5 miles away

Answer

Only close if lightning strikes within 1 mile

Answer

Thunderstorms do not affect pool safety

Question 6

What is the proper procedure for acid washing a plaster pool?

Accepted Answer

Drain the pool, apply diluted muriatic acid solution in sections, scrub, rinse, and neutralize

Answer

Fill the pool with acid and let it sit

Answer

Pour acid into a full pool and circulate

Answer

Acid washing is never recommended