Nordyne O5LD-091A-12-R, Installation, Operation And Maintenance Manual

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19. MAINTENANCE AND SERVICE
8
A: Routine Maintenance By Home Owner
Other than remembering to arrange for the annual
professional servicing of the furnace by the service or
installation contractor, the most important routine
service performed by the homeowner is to maintain the
air filter or filters. A dirty filter can cause the furnace to
over-heat, fail to maintain indoor temperature during
cold weather, increase fuel consumption and cause
component failure.
The furnace filter(s) should be inspected, cleaned or
replaced monthly. The furnace is factory equipped with
a semi-permanent type filter. If the filter is damaged,
replace with filters of the same size and type. (See
Appendix A, Table A-8).
During the routine service, inspect the general
condition of the furnace watching for signs of oil leaks
in the vicinity of the oil burner, soot forming on any
external part of the furnace, soot forming around the
joints in the vent pipe, etc. If any of these conditions
are present, please advise your service or installation
contractor.
Annual Service By Contractor
THE COMBUSTION CHAMBER (FIREPOT) IS
FRAGILE. USE CARE WHEN INSPECTING
AND CLEANING THIS AREA.
The heat exchanger should be inspected periodically
and cleaned if necessary. If cleaning is necessary,
SHUT OFF POWER TO THE FURNACE
and remove
the burner. Using a stiff brush with a wire handle,
brush off scale and soot from inside the drum and flue
pipe. To clean the radiator, remove the clean-out caps
screws, and remove the caps carefully to avoid tearing
the gaskets. A wire brush can be used to loosen dirt
and debris on the inside surfaces of the radiator. Clean
out all accumulated dirt, soot and debris with a wire
handled brush and an industrial vacuum cleaner.
Before replacing the clean-out caps, inspect the
gaskets. If the gaskets are broken, remove the
remnants and replace with new gaskets.
The blower motor is factory oiled and permanently
sealed.
DO NOT LUBRICATE.
Excess oil causes
premature electric failure.
Inspect the blower fan. Clean if necessary.
Oil Burner Maintenance: Follow the instructions of the
oil burner manufacturer. (See oil burner manufacturer's
instructions supplied with furnace or burner). It is
advisable to change the oil burner nozzle and oil filter
on an annual basis.
The venting system should be cleaned and inspected
for signs of deterioration. Replace pitted or perforated
vent pipe and fittings. The barometric damper should
open and close freely.
All electrical connections should be checked to ensure
tight connections. Safety controls such as the high limit
controls should be tested for functionality. The fan
control should be checked to ensure that the fan on
and off delay function continues to start and stop the
blower fan at the optimal settings.