Carrier 58CTS Service And Maintenance Procedures Manual Download

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furnace, and conditioned air is discharged upward. Since this
furnace can be installed in any of the 4 positions shown in Fig. 2,
you must revise your orientation to component location accord-
ingly.

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

PROCEDURE

Electrostatic discharge can affect electronic components.
Take precautions during furnace installation and servicing to
protect the furnace electronic control. Precautions will pre-
vent electrostatic discharges from personnel and hand tools
which are held during the procedure. These precautions will
help to avoid exposing the control to electrostatic discharge
by putting the furnace, the control, and the person at the same
electrostatic potential.

1. Disconnect all power to the furnace. DO NOT TOUCH THE

CONTROL OR

ANY

WIRE CONNECTED TO THE CON-

TROL PRIOR TO DISCHARGING YOUR BODY’S ELEC-
TROSTATIC CHARGE TO GROUND.

2. Firmly touch a clean, unpainted, metal surface of the furnace

chassis which is close to the control. Tools held in a person’s
hand during grounding will be satisfactorily discharged.

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 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 equip-
ment failure, periodic maintenance must be performed on this
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.

Personal injury can result from sharp metal edges, etc. Be
careful when removing parts.

Step 1—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.

To clean or replace filter, proceed as follows:
-Filters installed in media cabinet adjacent to furnace (See Fig. 3):

a. Turn off electrical supply to furnace before removing filter

access door.

b. Remove filter cabinet door.
c. Slide filter out of cabinet.

Fig. 2—Multipoise Orientation

A93041

UPFLOW

DOWNFLOW

HORIZONTAL

LEFT

AIRFLOW

HORIZONTAL