AZ ROC C-6 Swimming Pool Service And Repair Practice Questions - Arizona ROC C-6 Swimming Pool Service And Repair Examination Exam

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A technician is performing deep maintenance on heavily fouled cartridge filter elements covered in both organic oils and mineral scale. What is the correct order of chemical cleaning solutions to prevent permanently embedding scale into the fabric matrix?

Soak in degreasing solution first, rinse thoroughly, then soak in dilute muriatic acid solution Soak in dilute muriatic acid solution first, rinse thoroughly, then soak in degreaser Soak simultaneously in a mixed solution of muriatic acid and trisodium phosphate (TSP) Pressure wash at 3,500 PSI using cold water with no chemical pre-soak

Correct Answer:

Soak in degreasing solution first, rinse thoroughly, then soak in dilute muriatic acid solution

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