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Ⅲ CLEANING THE VENT AIR FILTER
1. Remove the unit chassis from wall sleeve as described
in the General Disassembly section of this manual.
See Figure 6.
2. Swing open vent door. The filter is located directly
behind the vent door. See Figure 23.
3. Remove the vent air filter by gently pushing on the
filter slot.
Once the vent air filter is removed, it may be cleaned
using either a vacuum cleaner, or a soft bristle brush
and a small amount of mild dish detergent. If deter-
gent is used, remove detergent residue with a gentle,
clean water stream. Let the filter air dry. Be sure to rein-
sert the filter into the unit.
Ⅲ REPLACING THE VENT AIR FILTER
Access and remove the vent air filter as detailed above
in Cleaning the Vent Air Filter. Use a filter replacement
with the Carrier Part No. 52SQ500204, available
through Replacement Components Division.
Ⅲ CHASSIS
As-needed cleaning of the unit’s exterior surfaces
(Figure 24) optimizes the unit’s appearance and removes
particles that may enter the air system. The 52S units
are built to resist corrosion. The indoor front panel
and wall sleeve are created from non-metallic compounds
that do not rust. Additional corrosion protection may
be factory installed on the partition, control box, and out-
side coil for use in highly corrosive environments. Mild
detergents reduce electrostatic charges on plastic sec-
tions on the grille and are good cleaners. Use such deter-
gent cleaners sparingly.
Use a clean cloth or brush to gently wipe exterior sur-
faces. Be careful not to push dirt or other fibers into the
unit’s interior. Accessible sleeve surfaces should also
be wiped clean.
VENT
DOOR
VENT
FILTER
FIGURE 23 — ACCESSING VENT AIR FILTER
FIGURE 24 — UNIT FRONT PANEL AND SLEEVE
52S
SERIES
12