Cleaning Instructions
WARNING
Fire, Burn and Explosion Hazard
■ This heater contains electrical and mechanical
components in the gas management, safety and
airflow systems.
■ Such components may become inoperative or
fail due to dust, dirt, wear, aging, or the corrosive
atmosphere of an animal confinement building.
■ Periodic cleaning and inspection as well as
proper maintenance are essential to avoid seri-
ous injury or property damage.
1. Before cleaning, close the fuel supply valve to the
heater and disconnect the electrical supply. Allow
heater to cool.
2. The heater should have dirt or dust removed
periodically:
a. After each flock or between building re-
population, give the heater a general cleaning
using pressurized air or a soft brush on its
burner box, reflectors, and tubes.
b. At least once a year, give the heater a thor-
ough cleaning. At this time, open the burner
box and brush or blow off control components,
and fan motor assembly. Ensure the burner air
inlet venturi ports and the throat of the casting
are free of dust accumulation.
c. When washing with water, do not spray water
into the burner box or the tubes. Observe
and obey the Warning within these Cleaning
Instructions. This same Warning is supplied on
the heater.
Sentry Tube Heaters
WARNING
This heater may be washed only on its external
areas provided:
■ The burner box is disconnected from the
electrical supply.
■ The burner box access panel is closed and
securely latched.
■ Water spray nozzle shall not discharge within 6
feet of the burner box and its tubes.
■ The water pressure does not exceed 45 PSIG
for 10 seconds on each side of burner box.
■ The burner box is not reconnected to electrical
supply for a minimum of 1 hour or until the it is
thoroughly dry.
Improper cleaning can cause severe personal
injury or property damage due to water and/or
cleaning solution:
■ In electrical components, connections and wires
within the burner box causing electrical shock or
component failure.
■ On gas control components causing corrosion
which can result in gas leaks and fire or explo-
sion from the leak.
Clean internal components of the burner box with a
soft, dry brush or cloth, or compressed air.
Owner's Manual • Sentry
19