Installation guide

--CS3-- --CSY--

A99442

Fig. 31--Defrost Control

4. Check electrical connections for tighmess and controls for

proper operation each cooling season. Service when neces-

sal'y.

Step 1--Air Filter

IMPORTANT: Never operate the unit without a suitable air filter

in the return-air duct system. Always replace the filter with the

same dimensional size and type as originally installed. See Table

1 for recommended filter sizes.

Inspect air fiherls) at le:t_t once each month and replace

(throwaway-type) or clean (cleanable-type) at least twice during

each cooling season and twice during the heating season, or

whenever the filter becomes clogged with dust and lint.

Step 2--.Indoor Blower and Motor

NOTE: All motors are prelubricated. Do not attempt to lubricate

these motors.

For longer life. operating economy, and continuing efficiency,

clean accumulated dirt and grease from the blower wheel and

motor annually.

Step 3--Outdoor Coil, Indoor Coil, and Condensate

Drain Pan

Inspect the condenser coil, evaporator coil. and condensate drain

pan at least once each year.

The coils are easily cleaned when dry; therefore, inspect and clean

the coils either before or after each cooling sea.son. Remove all

obstructions, including weeds and shrubs, that interfere with the

airflow through the condenser coil.

Straighten bent fins with a fin comb. If coated with dirt or lint,

clean the coils with a vacuum cleaner, using the soft brush

attachment. Be careful not to bend the fins. If coated with oil or

grease, clean the coils with a mild detergent-and-water solution.

Rinse coils with clear water, using a garden hose. Be careful not to

splash water on motors, insulation, wiring, or air filter(s). For best

results, spray condenser coil fins from inside to outside the unit.

On units with an outer and inner condenser coil, be sure to clean

between the coils. Be sure to flush all dirt and debris from the unit

b_.se.

Inspect the drain pan and condensate drain line when inspecting

the coils. Clean the drain pan and condensate drain by removing all

foreign matter from the pan. Flush the pan and drain trough with