Pool Testing
what is Phenol Red Used for?
ph
How many hours is your swimming pool required to completely turn over?
6 (AZ is 8 now)
What is the oldest Filter known to be 1st used in the the US?
sand
If you cannot see the main drain of your pool upon opening what should you do?
close untill water clarity makes drain visable
What is the acceptable Alkalinity range in a swimming pool?
80 to 120
what does CYA Stand for?
cyanuric acid (stabilizer)
how often should your main drain be changed (per law)
5 years
What Filter System takes the least amount of water to clean or backwash? De,sand or cartridge
cartridge
What does ERP stand for
emergency response plan
When does your free Chlorine work at its highest? low pH or high pH?
low ph
What does TDS stand for in water testing
Total Dissolved Solids
what does OSHA Require you to have available to any Employee or emergency worker
SDS sheets on Any chemical Stored in your pump area or room
What Guage should you observe to know when to backwash or clean your filters?
pressure guage
What is a (lock out tag out) kit used for
to prevent electrocution in the workplace
what is the acceptable range of CYA (stabilizer) in your Commercial Swimming pool?
30 to 50
What is the acceptable PH range in your Commercial Swimming Pool?
7.2 to 7.8
What is the highest temperature Aloud in a Hot tub or therapy pool
104
Should you clean your filters on a schedule or when your pressure guage reads 8 to 10 lbs above Starting pressure?
8 to 10 lbs above Starting pressure
All gates entering pool or spa area must open in or open out?
always open out
What happens if you go above your alkalinity (80 to 120) into the 200 to 300 range? what do you get?
PH lock
what chemical would you use to raise your Alkalinity and your pH in your swimming pool?
sodium bicarbonate
how many hours are a Commercial Swimming pool required to run and Circulate in a day?
24
If your getting a constant amount of sand into your pool what could be the possible problem with your sand filter?
Broken latterals
What does VGB stand for in the pool industry?
Virginia Graeme Baker safety act
How does a low pH of 7.0 or less affect a gas pool heater?
dissolves the copper heat exchanger