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11
EXTERNAL PARTS
■
EXTERNAL PARTS
include the polymer sleeve and
grilles. The sleeve manufacturer recommends cleaning
the surface, including the grilles, with household
detergent and water.
INTERNAL PARTS
■
INTERNAL PARTS
should be cleaned at least once
during the year. The outdoor vent filter should be
cleaned at least once during a cooling or heating
season.
Internal parts that should be cleaned include the fol-
lowing (see Figures 6, 18, and 19):
• Outdoor vent filter
•Basepan
• Outdoor orifice and fan
• Indoor and outdoor refrigeration coils
• Indoor blower wheel
• Wire screen
• Scroll
• Wall sleeve internal surfaces
• Outdoor grille
SCROLL
BLOWER
WHEEL
FIGURE 19 — BLOWER WHEEL AND SCROLL
VENT
DOOR
VENT
FILTER
MAGNET
OPEN
C
L
O
S
E
VENT HANDLE
FIGURE 18 — OUTDOOR VENT FILTER
(Left Side of Chassis)