25
Blower and Motor
NOTICE: The fan motor has sealed bearings that do NOT require lubrication.
The blower and fan motor will not normally require any service. This furnace is equipped
with a directly-driven blower. Therefore, it will not require any retensioning or
replacement of a drive belt.
Heat Exchanger
c
CAUTION: DO NOT attempt to clean the heat exchanger unless electrical power
and fuel flow to the furnace are turned off.
c
CAUTION: The combustion chamber refractory material is fragile and can be
easily damaged. Carfully remove the chamber from the heat exchanger before
attempting to clean the inner drum.
NOTICE: A qualified heating contractor MUST inspect the heat exchanger in this
furnace at least once a year. If heavy deposits are found, immediate cleaning is
required.
All heat exchanger surfaces should be as clean as possible for the most efficient
operation of the furnace. The heat exchanger may require cleaning after every heating
season, as combustion of fuel oil tends to produce soot, particulate matter, and scale,
due to corrosion.
NOTICE: Accumulation of heavy soot deposits over one heating season may
indicate the oil burner is out of adjustment.
The heat exchanger may be inspected and cleaned through an access, or cleanout, port
located in the burner compartment. Remove clean-out plugs, the vent connector pipe to
the chimney, the burner, and the burner mounting plates. When removing the clean-out
plugs, turn T-handle counterclockwise approximately two (2) full turns or just until the
plug is able to be pulled from tube. Take care not to remove T-handle from assembly.
See Fig. 6.
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