Care And Maintenance; Cleaning And/Or Replacing Air Filter; Blower Motor And Wheel Maintenance - Carrier 58MCB Service And Maintenance Instruction

FILTER
FILTER
RETAINER
SUPPORT
Fig. 3—Bottom Filter Arrangement
NOT move or shuffle your feet, DO NOT touch ungrounded
objects, etc.).
4. If you touch ungrounded objects (recharge your body with
static electricity), firmly touch furnace again before touching
control or wires.
5. Use this procedure for installed and uninstalled (ungrounded)
furnaces.
6. Before removing a new control from its container, discharge
your body's electrostatic charge to ground to protect the
control from damage. If the control is to be installed in a
furnace, follow items 1 through 5 before bringing the control
or yourself into contact with the furnace. Put all used AND
new controls into containers before touching ungrounded
objects.
7. An ESD service kit (available from commercial sources) may
also be used to prevent ESD damage.

CARE AND MAINTENANCE

For continuing high performance and to minimize possible furnace
failure, it is essential that maintenance be performed annually on
this equipment. Consult your local dealer about proper mainte-
nance and maintenance contract availability.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in 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.
The minimum maintenance that should be performed on this
equipment is as follows:
1. Check and clean or replace air filter each month as needed.
2. Check blower motor and wheel for cleanliness annually.
3. Check electrical connections for tightness and controls for
proper operation each heating season. Service as necessary.
4. Check for proper condensate drainage. Clean as necessary.
5. Check for blockages in combustion-air and vent pipes annu-
ally.
6. Check burners for cleanliness annually.
WASHABLE
FILTER
A93046
WASHABLE
FILTER
Fig. 4—Filter Installed for Side Inlet
CUT HAZARD
Failure to follow this caution may result in personal injury.
Be careful of sharp metal edges, etc. Use care and wear
protective clothing, safety glasses, and gloves when removing
parts.
Step 1—Cleaning and/or Replacing Air Filter
The air filter arrangement may vary depending on the application
or orientation.
FIRE, CARBON MONOXIDE AND POISONING
HAZARD
Failure to follow this warning could result in fire, personal
injury, or death.
Never operate unit without a filter or with the blower access
panel removed. Operating a unit without a filter or with the
blower access door removed could cause damage to the
furnace blower motor. Dust and lint on internal parts of
furnace can cause a loss of efficiency.
NOTE: If the filter has cross-mesh binding, the binding must face
the blower. If the filter has an air direction arrow, the arrow must
point toward the blower.
To clean or replace the filters, proceed as follows:
1. Turn off electrical supply to furnace.
2. Remove main furnace door and blower access panel.
3. Release filter retainer wire. (See Fig. 3 or 4.)
4. Slide filter out of furnace.
5. Furnaces are equipped with permanent, washable filter(s).
Clean filter by spraying cold tap water through filter in
opposite direction of airflow.
6. Rinse filter and let dry. Oiling or coating of filter is not
recommended.
7. Slide filter into furnace.
8. Recapture filter retainer wire.
9. Replace blower access panel and main furnace door.
10. Turn on electrical supply to furnace.
Step 2—Blower Motor and Wheel Maintenance
To ensure long life, economy, and high efficiency, clean accumu-
lated dirt and grease from blower wheel and motor annually.
3
FILTER
RETAINER
A93045