CSLB C-36 Plumbing ContractorFixture and Appliance InstallationMedium
A plumber is installing a water treatment system that includes a sediment filter, a carbon filter, and a UV sterilizer. After installation, the plumber needs to perform a leak test and ensure proper functionality. Which of the following is the most appropriate initial step in testing the system AFTER filling it with water?
- AOpen all downstream faucets to flush the system at maximum flow.
- BSlowly pressurize the system and visually inspect for leaks at all connections.
- CImmediately turn on the UV sterilizer to check its lamp.
- DBypass the filters and run water directly through the UV sterilizer.
Show answer & explanationAnswer & explanation
Correct answer: B. Slowly pressurize the system and visually inspect for leaks at all connections.
After installing any water treatment system, the first critical step is to slowly pressurize it and thoroughly check for leaks. This prevents water damage and ensures the integrity of all connections before full operation. Rushing to flush or activate components before confirming leak-free connections is risky.
Why the other options are wrong
- A. Flushing at maximum flow before checking for leaks increases the risk and severity of water damage if a connection is not secure.
- C. Turning on the UV sterilizer before checking for leaks could lead to water damage if a leak occurs or could damage the lamp if it's not fully immersed.
- D. Bypassing filters doesn't help test the integrity of the filter housings or connections and isn't the primary initial test after installation.
Water Treatment System Leak Test
The critical post-installation procedure to slowly pressurize a newly installed water treatment system and visually inspect all connections for leaks before full operation.
- Prevents water damage and ensures system integrity.
- Performed after filling the system with water.
- Involves slow pressurization and thorough visual inspection.
Memory trick: Pressurize slow, let the leaks show, then you know it's safe to go.