20
Step 2 — 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
season. 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 base.
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 clear water. Do not splash
water on the insulation, motor, wiring, or air filter(s). If the
drain trough is restricted, clear it with a plumbers snake
or similar probe device.
FIGURE 16
Cooling Charging Table -- Subcooling
