Maintenance Protocols Flashcards
7 cards from real CBI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Maintenance Protocols flashcards as text
How often should a fuel-burning furnace or boiler typically be professionally serviced?
Answer: Annually
Annual professional service checks combustion, venting, heat exchangers, and safety controls.
Why is a cracked furnace heat exchanger a serious maintenance concern?
Answer: It can let combustion gases, including carbon monoxide, enter the supply air
A breached heat exchanger can let carbon monoxide and other combustion byproducts into the living space.
Why should weep holes at the base of brick veneer be kept clear during maintenance?
Answer: They let water drain out of the wall cavity
Weep holes drain water that collects behind the veneer, and blocking them traps moisture against the sheathing.
What indoor relative humidity range does the EPA recommend to help prevent mold growth?
Answer: 30–50%
The EPA advises keeping indoor humidity between 30% and 50%, and below 60%, to limit mold growth.
Where must a bathroom exhaust fan duct terminate?
Answer: To the exterior of the building
Bath exhaust must vent to the outdoors, because venting into an attic or cavity deposits moisture that causes mold and rot.
Why can a frost-free sillcock still freeze and burst in winter?
Answer: A garden hose left attached traps water in the valve body
An attached hose keeps water from draining out of the barrel, so it can freeze; hoses should be disconnected before winter.
What is the main maintenance reason for keeping basement window wells clear of leaves and debris?
Answer: To allow drainage and prevent water from pooling against the window and foundation
Debris clogs the well drain, which lets water pond and leak through the window or foundation.