Performing Routine Maintenance - Carrier 58VLR User's Information Manual

SHUTTING DOWN YOUR FURNACE
Should you need to shut down your furnace for service
or maintenance, you will need to turn the furnace off.
The fl)llowing procedures must be followed:
1. Set the thermostat to the lowest setting.
(See Fig. 8.)
f
2. Turn off all electrical power to the appliance.
(See Fig. 9.)
3. Close the oil supply valve. (See Fig. 10.)
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4. If applicable, turn off water supply to humidifier.
5. If furnace blower will be necessary fl)r cooling sys-
tem, remember to turn electric power back on when
needed fl)r air conditioning.
6. If the furnace is being shut down because of a mal-
function, call your dealer as soon as possible.
ALWAYS KEEP MAIN OIL VALVE TURNED OFF
IF BURNER IS SHUT DOWN FORAN EXTENDED
PERIOD OF TIME.
PERFORMING ROUTINE
MAINTENANCE
With proper maintenance and care, your furnace will
operate economically and dependably. Instructions fl)r
basic maintenance fl)llow. However, befl)re beginning
maintenance, fl)llow these safety precautions:
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ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in
personal injury or death.
Turn off all electrical power to furnace before
performing any maintenance or service on
unit.
CUTS HAZARD
Failure to follow this caution may result in
minor personal injury.
Although special care has been taken to mini-
mize sharp edges, be extremely careful when
handling parts or reaching into the furnace.
FILTERING OUT TROUBLE
Dirty air filters will cause a loss of airflow in your duct
system. When excessive loss of airflow occurs, the fur-
nace may cycle on its safety controls. If this condition
is left unattended, the furnace will eventually lock out.
It is recommended that the furnace air filters be checked
every 3 or 4 weeks and cleaned or replaced as necessary.
UNIT OVERHEAT HAZARD
Failure to follow this caution may result in
damage to the furnace blower motor, over
heat the heat exchanger and reduce the effi-
ciency.
Never operate your furnace without the air
filters in place.
The air filters are located in the blower compartment
installed in an internal filter rack which is provided as
standard equipment with furnace. (See Fig. 2.) To
inspect, clean, and or replace air filters, fl)llow these
steps: