Be sure setscrews are tightened on motor and are not on
round part of shaft.
d. Set upper orifice ring in place with 3 screws removed in
step 1.
e. Replace top access panel.
Step 4 -- Condenser Coil, Evaporator Coil, and
Condensate Drain Pan
Inspect the condenser coil, evaporator coil, and condensate drain
pan at least once heating and cooling season. Proper inspection and
cleaning requires the removal of the unit top. See []nit Top
Removal section above.
Remove all obstructions (including weeds and shrubs) that
interfere with the airflow through the outdoor coil. Straighten bent
fins with a fin comb. If coated with dirt or lint, clean the coils with
a vacuum cleaner, using a 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 tube with
clear water. Do not splash water on the insulation, motor, wiring, or
air filter(s). If the drain tube is restricted, clear it with a "plumbers
snake" or similar probe device. Ensure that the auxiliary drain port
above the drain tube is also clear.
Step 5 -- Condenser Fan
[]NIT OPERATION HAZARD
Failure to follow this caution may result in damage to unit
components.
Keep the condenser fan free from all obstructions to ensure
proper cooling operation. Never place articles on top of
unit.
1. Shut off unit power supply and install lockout tag.
2. Remove condenser-fan assembly (grille, motor, motor
cover, and fan) by removing screws and flipping assembly
onto unit top cover.
3. Loosen fan hub setscrews.
4. Adjust fan height as shown in Fig. 22 or 23.
5. Tighten setscrews.
6. Replace condenser-fan assembly.
Step 6 -- Electrical Controls and Wiring
Inspect and check the electrical controls and wiring annually. Be
sure to turn off the electrical power to the unit and install lockout
tag.
Remove the top panel to locate all the electrical controls and
wiring. Check all electrical connections for tightness. Tighten all
screw connections. If any smoky or burned connections are
noticed, disassemble the connection, clean all the parts, restrip the
wire end and reassemble the connection properly and securely,
Check to ensure no wires are touching refrigerant tubing or sharp
sheet metal edges. Move and secure wires to isolate from tubing
and sheet metal edges,
15
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