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GENERAL CLEANING
Maintaining proper performance of 52S systems
(Figure 21) requires conscientious cleaning and care of
components. Specific components require periodic clean-
ing and/or replacement, including the following:
COMPONENT CLEANING SCHEDULE
Indoor Air Filter Monthly
Vent Air Filter Monthly
Indoor Coil Seasonally
Indoor Fan Seasonally
Outdoor Coil Seasonally
CLEANING AND SAFETY
Before starting to clean a unit, read the instructions
thoroughly and gather the necessary tools for the job.
Review all safety information on unit and in literature.
Before cleaning, servicing, performing maintenance,
or removing the chassis from the wall sleeve, discon-
nect all power to the unit to avoid the possibility of
electrical shock and personal injury. Only trained
and qualified service personnel should perform
installation and service procedures on these units.
Untrained personnel may perform basic maintenance
tasks such as cleaning and replacing filters. Refer to
General Disassembly section of this manual for
proper procedures to disconnect power to 52S units.
Consider the following safety issues before
beginning:
• New and unfamiliar tasks should be performed
under the supervision of an experienced service
technician.
• Personal protective equipment, such as safety glasses
and work gloves, should be used.
• The floor around the work area should be clean and
free of debris.
• The 52S unit weighs up to 150 pounds. Use a lifting
device or ask for assistance if the unit must be moved.
• Make sure tools are the correct tools for the job,
and that they are working properly and in good
condition.
OFF
ON
FRONT COVER
CHASSIS
WALL SLEEVE
FIGURE 21 — FRONT PANEL, CHASSIS, AND SLEEVE
52S
SERIES
10