External Inspection And Cleaning - A.O. Smith 12 40GPC T 100 Service Handbook

Cleaning the Air Intake Chamber Screen:
• At least twice annually the air intake chamber
screen should be inspected for any dust or
debris that may have accumulated on the
louvers.
NOTE: If the water heater is located in an area
that is subjected to lint, pet hair or dirt, it may be
necessary to check the air intake chamber screen
more frequently.
• Use a vacuum cleaner with a hose attachment
to remove any dust or debris that may have
accumulated on the screen.
Cleaning the Combustion Chamber and Air
Diverter Assembly:
• Follow procedure outlined in "Removing Inner
Door/Manifold/Burner Assembly", page 41.
• Use a vacuum cleaner/shop vac to remove
all loose debris in the combustion chamber.
Use compressed air to clear any dust or
debris that may have accumulated on the air
diverter assembly.
• Reassemble following the procedure under
"Installing Inner Door/Manifold/Burner
Assembly", page 42.

EXTERNAL INSPECTION AND CLEANING

Figure 24.
Figure 25.
INNER DOOR/
MANIFOLD/BURNER
ASSEMBLY
24
Air Intake Chamber
Screen
COMBUSTION
CHAMBER
AIR DIVERTER
ASSEMBLY