3
51902190402
Specifications are subject to change without notice.
Routine Maintenance
All routine maintenance should be handled by skilled, experienced
personnel. Your dealer can help you establish a standard procedure.
To assure proper functioning of the unit, flow of condenser air
must not be obstructed from reaching the unit. Clearance from the
top of the unit is 48 in. (1219 mm). Clearance of at least 36 in.(914
mm) is required on sides except the power entry side (42 in. [1067
mm] clearance) and the duct side (12 in. [305 mm] minimum
clearance).
Maintenance and Care for the Equipment Owner
Before proceeding with those things you might want to maintain
yourself, please carefully consider the following:
FIRE, EXPLOSION, ELECTRICAL SHOCK AND
CUT HAZARD
Failure to follow this warning could result in personal
injury, death or property damage.
1. TURN OFF ELECTRICAL POWER TO YOUR UNIT
BEFORE
SERVICING
OR
PERFORMING
MAINTENANCE. Lock out and tag switch with a suit-
able warning label.
2. When
removing
access
panels
or
performing
maintenance functions inside your unit, be aware of
sharp sheet metal parts and screws. Although special care
is taken to reduce sharp edges to a minimum, be
extremely careful when handling parts or reaching into
the unit. Wear safety glasses, glove, and appropriate pro-
tective clothing.
!
WARNING
Air Filters
The air filter(s) should be checked every 3 or 4 weeks and
changed or cleaned whenever it becomes dirty. Dirty filters
produce excessive stress on the blower motor and can cause the
motor to overheat and shut down.
This unit must have air filters in place before it can be operated.
These filters can be located in one of at least two places. In many
applications, the installer will provide return air filter grilles
mounted on the wall or ceiling of the conditioned structure. In the
instance of filter grilles, the filters can simply be removed from the
grille and replaced.
The other typical application is an accessory filter rack installed
inside the unit itself. The following information is given to assist in
changing filters used in these internal filter racks.
Table 1 indicates the correct indoor filter size for your unit. Refer
to Fig. 2 to access filters installed in the accessory filter rack. If
using an Accessory Filter Rack, refer to the Installation Instructions
provided with it for correct filter sizes and quantities.
Table 1 – Indoor Air Filter Data
Unit Size
Filter Size in. (mm)
24
20x20x1 (508x508x25)
30
20x24x1 (508x610x25)
36---42
24x30x1 (610x762x25)
48---60
24x36x1 (610x914x25)
To replace or inspect filters in accessory filter rack (See Fig. 2):
1. Remove the filter access panel using a 5/16--in. nut driver.
2. Remove the filter(s) by pulling it out of the unit. If the
filter(s) is dirty, clean or replace with a new one.
When installing the new filter(s), note the direction of the airflow
arrows on the filter frame, which should be pointed at the indoor
coil.
3. Reinstall filter access panel ensuring opening is air and
water tight.
If you have difficulty locating your air filter(s) or have questions
concerning proper filter maintenance, contact your dealer for
instructions. When replacing filters, always use the same size and
type of filter that was supplied originally by the installer.
UNIT OPERATION HAZARD
Failure to follow this caution may result in
property
damage.
Never operate your unit without filters in place. An
accumulation of dust and lint on internal parts of your unit
can cause loss of efficiency and blower motor and/or
compressor damage.
!
CAUTION
Access Panels
Filter Access Panel
For Accessory Filter Rack
A09044
Fig. 2 -- Unit Access Panel
Fans and Fan Motors
Periodically check the condition of fan wheels and housings and
fan--motor shaft bearings. Contact your dealer for the required
annual maintenance.
Indoor and Outdoor Coils
Cleaning of the coils should only be done by qualified service
personnel. Contact your dealer for the required annual
maintenance.
Condensate Drain
The drain pan and condensate drain line should be checked and
cleaned at the same time the cooling coils are checked by your
dealer.
Compressor
All compressors are factory shipped with a normal charge of the
correct type of refrigeration grade oil. A compressor should rarely
require additional oil.
Condenser Fan
PERSONAL
INJURY
AND
UNIT
DAMAGE
HAZARD
Failure to follow this warning could result in personal
injury, death or property damage.
Do not poke sticks, screwdrivers, or any other object into
revolving fan blades.
!
WARNING
