CAMT Pool and Spa Maintenance 2

Question 1

What is the purpose of backwashing a sand or DE pool filter?

Accepted Answer

To remove trapped debris and restore flow rate

Answer

Backwashing reverses water flow through the filter to flush out accumulated dirt and debris, restoring its filtration capacity.

Question 2

What is the recommended total alkalinity range for residential pool water?

Accepted Answer

80–120 ppm

Answer

Total alkalinity of 80–120 ppm acts as a pH buffer, preventing rapid pH swings in pool water.

Question 3

Which chemical is used to raise the pH of pool water?

Accepted Answer

Sodium carbonate (soda ash)

Answer

Sodium carbonate (soda ash) is the standard chemical added to pool water to increase pH when it falls below the ideal range.

Question 4

How should pool chemicals be stored in an apartment maintenance facility?

Accepted Answer

In a cool, dry, well-ventilated area, separated by chemical type

Answer

Pool chemicals must be stored separately by type in a cool, dry, ventilated space to prevent dangerous reactions between incompatible chemicals.

Question 5

What does a pool's 'turnover rate' refer to?

Accepted Answer

The time it takes to circulate the entire pool volume through the filter

Answer

Turnover rate is the time required for the pump and filter to circulate and filter the entire volume of pool water once.

CAMT - Certified Apartment Maintenance Technician Practice Test