Carrier 58CTA/CTX Filter Size Information In. / Mm, Cleaning And/Or Replacing Air Filter

58CT

TABLE 17 – FILTER SIZE INFORMATION (IN. / MM)

			FILTER SIZE
FURNACE CASING WIDTH		SIDE			BOTTOM		FILTER TYPE
		RETURN			RETURN
14---1/2 (368)		16 x25 x 3/4			14 x25 x 3/4		Washable*
		(406 x635 x 19)			(356 x635 x 19)
17---1/2 (445)		16 x25 x 3/4			16 x25 x 3/4		Washable*
		(406 x635 x 19)			(406 x635 x 19)
	21 (533)	16 x25 x 3/4			20 x25 x 3/4		Washable*
		(406 x635 x 19)			(508 x635 x 19)
	24 (610)	16 x25 x 3/4			24 x25 x 3/4		Washable*
		(406 x635 x 19)			(610 x635 x 19)
* Recommended
** Some furnaces may have 2 filters.
CLEANING AND/OR REPLACING AIR FILTER				To ensure long life and high efficiency, clean accumulated dirt
The air filter arrangement will vary depending on the application.				and grease from blower wheel and motor annually.
				The inducer and blower motors are pre-lubricated and require no
NOTE: If the filter has an airflow direction arrow, the arrow
must point towards the blower.				additional lubrication. These motors can be identified by the
				absence of oil ports on each end of the motor.
!	CAUTION			Clean blower motor and wheel as follows:
			1.		Turn off electrical supply to furnace.
CUT HAZARD			2.		Loosen the thumbscrew from outer door and remove outer
					door.
Failure to follow this caution may result in personal injury.
			3.		For downflow or horizontal furnaces having vent pipes
Sheet metal parts may have sharp edges or burrs. Use care
					within the furnace that pass in front of the blower access
and wear appropriate protective clothing, safety glasses and					door:
gloves when handling parts and servicing furnaces.
					a. Disconnect vent connector from furnace vent elbow.
					b. Disconnect and remove short piece of vent pipe from
Media cabinet filter procedures:					within furnace.
NOTE: Media Cabinet is included with two-stage furnace.			4.		Remove 2 screws from blower access door and remove
1. Turn off electrical supply to furnace before removing filter					blower access door.
			5.		Disconnect blower leads from furnace control. Record
access door.
2. Remove filter cabinet door.					wire color and location for reassembly. All other factory
					wires can be left connected, but field thermostat connec-
3. Slide filter out of cabinet.
					tions may need to	be disconnected depending on their
4. If equipped with permanent, washable 3/4-in. (19 mm) fil-
					length and routing.
ter, clean filter by spraying cold tap water through filter in
			6.		Remove 2 screws holding control box to blower shelf.
opposite direction of airflow. Rinse filter and let dry. Oil-
			7.		Hang control box from front of furnace casing and away
ing or coating of the filter is not recommended. See Table
					from blower compartment.
17 for size information.
			8.		Remove 2 screws	holding blower assembly to blower
5. If equipped with factory-specified disposable media filter,
					deck and slide blower assembly out of furnace.
replace only with media filter having the same part num-
			9.		Clean blower wheel and motor using a vacuum with soft
ber and size. For expandable replacement media, refer to
the instructions included with the replacement media. If					brush attachment. Blower wheel blades may be cleaned
equipped with accessory KGAFR0301ALL external filter					with a small paint or flux brush. Do not remove or disturb
rack. See Table 17.					balance weights (clips) on blower wheel blades.
6. Slide filter into cabinet.			10.		Vacuum any loose dust from blower housing, wheel and
7. Replace filter cabinet door.					motor.
			11.		If a greasy residue is present on blower wheel, remove
8. Turn on electrical supply to furnace.

BLOWER MOTOR AND WHEEL	wheel from the blower housing and wash it with an appro-
	priate degreaser. To remove wheel:

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Blower access door switch opens 115-v power to control. No component operation can occur unless switch is closed. Caution must be taken when manually closing this switch for service purposes.

NOTE: The blower wheel should not be dropped or bent as balance will be affected.

The following steps should be performed by a qualified service agency.

NOTE: Before disassembly, mark blower mounting arms, motor, and blower housing so motor and each arm is positioned at the same location during reassembly.

a.Disconnect capacitor wires (if equipped) and ground wire attached to blower housing.

b.Remove screws securing cutoff plate and remove cutoff plate from housing.

c.Loosen set screw holding blower wheel on motor shaft (160+/-20 in.-lb. when reassembling).

d.Remove bolts holding motor to blower housing and slide motor out of wheel (40+/-10 in.-lb. when reassembling).

e.Remove blower wheel from housing.

f.Clean wheel and housing.

12.Reassemble motor and blower by reversing steps 11e, through 11a. Be sure to reattach ground wire to the blower housing.

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