Warning, Caution, Care and maintenance – Carrier 58MCB User Manual

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person’s hand during grounding will be satisfactorily dis-
charged.

3. After touching the chassis, you may proceed to service the

control or connecting wires as long as you do nothing that
recharges your body with static electricity (for example; DO

NOT move or shuffle your feet, DO NOT touch ungroun-
ded objects, etc.).

4. If you touch ungrounded objects (recharge your body with

static electricity), firmly touch furnace again before touch-
ing control or wires.

5. Use this procedure for installed and uninstalled (ungroun-

ded) 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 con-
trol or yourself into contact with the furnace. Put all used

AND new controls into containers before touching un-
grounded 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.
Consult your local dealer for maintenance 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.

WARNING

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 an-

nually.

6. Check burners for cleanliness annually.

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, gloves, and safety glasses when

removing parts.

CAUTION

Step 1 — Cleaning and/or Replacing Air Filter

The air filter arrangement may vary depending on the application
or orientation. See Table 1 or 2 for filter size and type.

FILTER

FILTER
SUPPORT

FILTER
RETAINER

A08586

Fig. 3 -- Bottom Filter Arrangement

FILTER

RETAINER

FILTER

A08587

Fig. 4 -- Filter Installed for Side Inlet

FIRE, CARBON MONOXIDE POISONING

HAZARD
Failure to follow this warning could result in personal injury,

death or property damage.
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.

WARNING

NOTE: If the filter has an airflow direction arrow, the arrow must
point toward the blower.
To clean or replace filters, proceed as follows:
If filter is installed in filter cabinet adjacent to furnace:

58MC