Preventive Maintenance Procedures Flashcards
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Read the first 7 Preventive Maintenance Procedures flashcards as text
How often should pressure relief valves on water heaters be manually tested as part of preventive maintenance?
Answer: Annually
Pressure relief valves should be tested annually to ensure they open and reseat properly under pressure.
What is the primary purpose of flushing a water heater tank during preventive maintenance?
Answer: Remove sediment buildup from the bottom
Flushing removes mineral sediment that accumulates at the tank bottom, which reduces efficiency and can cause premature tank failure.
During a preventive maintenance inspection of a sewer line, a plumber finds minor root intrusion. What is the recommended first action?
Answer: Perform hydro-jetting to clear roots and schedule follow-up camera inspection
Hydro-jetting removes roots and a follow-up camera inspection confirms line clearance and assesses potential pipe damage.
What does inspecting the anode rod in a water heater help prevent?
Answer: Corrosion of the tank interior
The anode rod sacrificially corrodes to protect the steel tank walls from rust and corrosion.
A preventive maintenance checklist for a building's plumbing system should include checking backflow preventer operation. How frequently is annual testing typically required by code?
Answer: Once per year
Most jurisdictions require backflow preventers to be tested annually by a certified tester to ensure they are protecting potable water supplies.
When performing preventive maintenance on a sump pump, which test verifies the pump will activate properly?
Answer: Pour water into the pit to trigger the float switch
Pouring water into the sump pit raises the float, simulating normal operation and confirming the pump activates and removes water.
What is the recommended maintenance interval for lubricating the packing nuts on gate valves in a commercial plumbing system?
Answer: Annually or per manufacturer specifications
Annual lubrication of packing nuts prevents stem corrosion and ensures gate valves can be fully opened or closed when needed.