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24 Cards in this Set
- Front
- Back
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Linton and hair catchers installed _____ of circ pump |
Ahead of circ pump |
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Common piping material in swimming pools |
PVC and copper |
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Chlorine is added in public swimming pools how? |
Gas feed |
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Greenish blue color associated with ? |
Algae growth or low ph |
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Residual chlorine in water ? |
Maintain minimum 0.5milli per liter |
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Chlorine dose of 2mg/l required for _____mg/l of free residual |
0.5mg/l of free residual |
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Super chlorination in ml/l ? |
6-10ml/l |
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Recc range fro swimming pools ? Precipitation forms above ph8 |
6.8-7.6ph |
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Addition of ________ helps maintain ph levels |
Soda ash (sodium carbonate) |
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3 forms of alkalinity ? |
Hydroxide Carbonate Bicarbonate |
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2 types algae? |
Free floating A type attaching itself to pool walls (Free floating are harmless) |
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Proper Water pool temp? |
24°c to 26c |
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City water outlet ____cm above rim of the tank to form air gap |
10cm |
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Filter aid pros and cons over gravel units ? |
Light,compact, requires less water But cost more to operate |
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Types of vaccum cleaners |
Built in Portable. Skimmers |
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Compressed air systems operate _____ atmospheric pressure |
Above atmospheric pressure |
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Compress air system>> |
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Pressure switch controls pressure cut in cut out. Compressed air psi diff should be |
15psi |
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Compressed air systems have pressure relief valve mounted on receiver set ____psi above cut out ? |
10psi |
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2 types of rotary vain compressor |
Single Multi |
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Min pipe of 1/2" should be used for Indv service ______?(inlet/outlet |
Outlet |
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Air distribution system req for grade? |
1/100 toward drain |
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P eumatic systems operate at pressures below ? |
200psi |
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Black pipe used most due to its low cost |
So yeah |
