SEASONAL CLEANING
The indoor and outdoor coils should be cleaned at least once during every season. Refer to ACCESSING UNIT COMPONENTS section to prepare unit.
■CLEANING THE INDOOR AND OUTDOOR COILS
Coil fins are sharp and may cut hands. Wear heavy protective gloves when cleaning coils.
Use only cleaning solutions that meet local codes.
1.Use a vacuum cleaner or soft bristle brush to remove surface fibers and dirt from the interior surface of evaporator coil and both surfaces of con- denser coil. See Figure 24. It is important to apply the tool in the same direction of the fins, not against them. Applying the tool against the fins may cause damage (fin edges may bend over).
2.With a tank sprayer or a trigger spray extension tube, spray coil cleaning solution evenly across the coils, making sure coils are thoroughly satu- rated. See Figure 25. Refer to instructions on the cleaning solution containers for best results. Do not use a
3.Rinse the coils thoroughly with
4.Repeat steps 2 and 3 for each coil surface.
5.Drain water and cleaning solution that may have collected in the basepan during the cleaning pro- cess by carefully tilting the chassis. This allows excess water to flow out of the overflow notches.
FIGURE 21 — LOCATION OF
TWO-PIECE INDOOR FILTER
Do not set unit on end to drain water from basepan, or at any other time. Oil will drain from the com- pressor sump, which could cause compressor failure.
6.Thoroughly clean the basepan and drain passages by rinsing with clean water. Be sure all debris is removed from the drain valve. See Figure 26.
7.Thoroughly clean outdoor fan assembly and all other mechanical components located in outdoor coil area. Be sure to remove all dirt and debris.
8.Clean wall sleeve.
■CLEANING THE INDOOR FAN AND FAN SCROLL — Dried debris and
1.ACCESS AND CLEAN INDOOR FAN AND FAN SCROLL
a.Reach behind the indoor coil and vacuum any loose debris from the condensate drain pan, fan and other areas accessible to the fan scroll, being careful to avoid damage to the coil fins.
b.Use mild detergent and a damp cloth to remove stubborn debris from surfaces around scroll and fan blades.
2.CLEAN HEATER ASSEMBLY — Use com- pressed air to blow off any dirt or dust that has accumulated on the heater coils.
NOTE: Do not direct air at the
VENT DOOR
OUTDOOR
AIR FILTER
FIGURE 22 — LOCATION OF OUTDOOR AIR
VENT FILTER
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