Cleaning And/Or Replacing Air Filter; Blower Motor And Wheel - Carrier 58CVA Installation, Start-Up, Operating And Service And Maintenance Instructions

equipment. Consult your local dealer about proper frequency of
maintenance and the availability of a maintenance contract.
Never store anything on, near, or in contact with the furnace,
such as:
1. Spray or aerosol cans, rags, brooms, dust mops, vacuum
cleaners, or other cleaning tools.
2. Soap powders, bleaches, waxes or other cleaning com-
pounds, plastic or plastic containers, gasoline, kerosene,
cigarette lighter fluid, dry cleaning fluids, or other volatile
fluids.
3. Paint thinners and other painting compounds, paper bags,
or other paper products.
A failure to follow this warning could result in corrosion of
the heat exchanger, fire, personal injury, or death.
Turn off the gas and electrical supplies to the unit before
performing any maintenance or service. Follow the operating
instructions on the label attached to the furnace. A failure to
follow this warning could result in personal injury.
The minimum maintenance on this equipment is as follows:
1. Check and clean air filter each month or more frequently if
required. Replace if torn.
2. Check blower motor and wheel for cleanliness each heating
and cooling season. Clean as necessary.
3. Check electrical connections for tightness and controls for
proper operation each heating season. Service as necessary.
4. Inspect burner compartment before each heating season for
rust, corrosion, soot or excessive dust. If necessary, have
furnace and burner serviced by a qualified professional.
5. Inspect the vent pipe/vent system before each heating season
for rust, corrosion, water leakage, sagging pipes or broken
fittings. Have vent pipes/vent system serviced by a qualified
professional.
6. Inspect any accessories attached to the furnace such as a
humidifier or electronic air cleaner. Perform any service or
maintenance to the accessories as recommended in the acces-
sory instructions.
Personal injury can result from sharp metal edges, etc. Be
careful when removing parts. Gloves and safety glasses
should be worn when servicing equipment.

CLEANING AND/OR REPLACING AIR FILTER

The air filter arrangement may vary depending on the application.
NOTE: If the filter has an airflow direction arrow, the arrow must
point towards the blower.
Never operate unit without a filter or with filter access door
removed. A failure to follow this warning could result in fire,
personal injury, or death.
Media cabinet filter procedures:
NOTE: Media cabinet is included with variable speed furnace.
1. Turn off electrical supply to furnace before removing filter
access door.
2. Remove filter cabinet door.
3. Slide filter out of cabinet.
4. If equipped with permanent, washable 1" filter, clean filter by
spraying cold tap water through filter in opposite direction of
airflow. Rinse filter and let dry. Oiling or coating of the filter
is not recommended. See Table 12 for size information.
Table 12—FILTER SIZE INFORMATION (IN.)
FURNACE
CASING WIDTH
Side Return
14-1/2 16 X 25 X 1
17-1/2 16 X 25 X 1
21 16 X 25 X 1
24 16 X 25 X 1
* Recommended
5. If equipped with factory-specified disposable media filter,
replace only with media filter having the same part number
and size. For expandable replacement media, refer to the
instructions included with the replacement media. If equipped
with accessory KGAFR0301ALL external filter rack, See
Table 12.
6. Slide filter into cabinet.
7. Replace filter cabinet door.
8. Turn on electrical supply to furnace.

BLOWER MOTOR AND WHEEL

The following steps should be performed by a qualified service
technician.
To ensure long life and high efficiency, clean accumulated dirt and
grease from blower wheel and motor annually.
The inducer and blower motors are pre-lubricated and require no
additional lubrication. These motors can be identified by the
absence of oil ports on each end of the motor.
Clean blower motor and wheel as follows:
1. Turn off electrical supply to furnace.
2. Loosen the thumbscrew on outer door and then remove outer
door.
3. For downflow or horizontal furnaces having vent pipes within
the furnace that pass in front of the blower access door:
a. Disconnect vent connector from furnace vent elbow.
b. Disconnect and remove short piece of vent pipe from
within furnace.
4. Remove 2 screws from blower access door and remove blower
access door.
5. Disconnect blower leads from furnace control. Notice wire
color and location for reassembly. All other factory wires can
be left connected, but field thermostat connections may need
to be disconnected depending on their length and routing.
6. Remove 2 screws from control box to blower shelf.
7. Hang control box from front of furnace casing and away from
blower compartment.
8. Remove 2 screws holding blower assembly to blower deck
and slide blower assembly out of furnace.
9. Clean blower wheel and motor using a vacuum with soft brush
attachment. Blower wheel blades may be cleaned with a small
paint or flux brush. Do not remove or disturb balance weights
(clips) on blower wheel blades.
10. Vacuum any loose dust from blower housing, wheel and
motor.
38
FILTER SIZE
FILTER
TYPE
Bottom Return
14 X 25 X 1 Cleanable*
16 X 25 X 1 Cleanable*
20 X 25 X 1 Cleanable*
24 X 25 X 1 Cleanable*