Certified Pool Operator Test Review Questions with Verified Answers

Certified Pool Operator Test Review Questions with Verified Answers 12 Reasons why the health inspector will close your pool 1. pump filter not working for more than an hour 2. main drain is not visible 3. chemical readings out of range 4. no pool operator (15 minute grace period) 5. no lifeguard or cpr certs present 6. water is below the skimmer line 7. danger to the public 8. chlorinator is not working 9. health inspector is not allowed in 10. bathrooms + drains not working 11. flow rate is too low 12. no phone (landline) Measuring records as the CPO Operator must test the water for Cl and pH every hour, and Total Alkalinity, Calcium Hardness and Cyanuric Acid once per week. Records must be maintained on site and available for at least 2 years at the pool and 3 years total. 5 Factors of Water Balance pH, Total Alkalinity, Calcium Hardness, Temperature, and total dissolved liquids Corrosive water pH is too low, dissolves everything it contacts scaling water pH it too high, mineral deposits on walls or pipes Regulated pH range 7.2-7.8 pH reading is tested with Phenol Red To lower pH, add muriatic acid To raise the pH, add sodium carbonate (Soda Ash) 2. sodium bisulfate 3. carbon dioxide Total Alkalinity represents the amount of carbonates, bicarbonates, and hydroxides in a solution - you want this to be high, because the pH resists changes in fluctuating pH Bounce low alkalinity Regulated Total Alkalinity range 60-180 ppm ideal goal is 100ppm To lower Total Alkalinity, add muriatic acid To raise Total Alkalinity, add Baking Soda Calcium Hardness amount of calcium and magnesium in the water (mineral content in water) Regulated calcium hardness range 150-400ppm To raise Calcium Hardness, add calcium chloride