NV A-10C Pool And Spa Repair Practice Questions - Nevada A-10C Repair Of Pools And Spas Contractor Examination Exam

Before draining a residential pool for plaster replacement, why must a working hydrostatic relief path be confirmed?

To increase filter pressure during the drain To keep the spa jets primed while the pool is empty To vent air from the heater exchanger To relieve groundwater pressure that can float or crack an empty shell

Correct Answer:

To relieve groundwater pressure that can float or crack an empty shell

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