Table of Contents
Advertisement
12.0 MAINTENANCE
For continuing high performance, and to minimize possible equipment failure, it is
essential that periodic maintenance be performed on this equipment. Consult your local
dealer as to the proper frequency of maintenance and the availability of a maintenance
contract
IMPORTANT: Before performing any service or maintenance procedures, see the
WARNING
Units with circuit breaker(s) meet requirements as a service disconnect
switch, however, if access is required to the line side (covered) of the circuit
breaker, this side of the breaker(s) will be energized with the breaker(s) de-
energized. Contact with the line side can cause electrical shock resulting in
personal injury or death.
"Safety Information" section at the front of this manual.
12.1 AIR FILTER (NOT FACTORY-INSTALLED)
Check the system filter every ninety days or as often as found to be necessary and if
obstructed, clean or replace at once.
FILTER MAINTENANCE
Have your qualified installer, service agency or HVAC professional instruct you on how
to access your filters for regular maintenance.
IMPORTANT: Do not operate the system without a filter in place.
• New filters are available from your local distributor.
12.2 INDOOR COIL - DRAIN PAN - DRAIN LINE
Inspect the indoor coil once each year for cleanliness and clean as necessary. In some
cases, it may be necessary to remove the filter and check the return side of the coil with
a mirror and flashlight.
IMPORTANT: Do not use caustic household drain cleaners, such as bleach, in the con-
densate pan or near the indoor coil. Drain cleaners will quickly damage the indoor coil.
12.3 BLOWER MOTOR AND WHEEL
Inspect the blower motor and wheel for cleanliness. It should be several years before it
would become necessary to clean the blower motor and wheel.
• If it becomes necessary to remove the blower assembly from the unit, see instructions
on removal and disassembly of motor, blower and heater parts.
• The blower motor and wheel may be cleaned by using a vacuum with a soft brush
attachment. Remove grease with a mild solvent such as hot water and detergent. Be
careful not to disturb the balance weights (clips) on the blower wheel blades. Do not
drop or bend wheel as balance will be affected.
12.4 LUBRICATION
The blower motor sleeve bearings are pre-lubricated by the motor manufacturer and do
not have oiling ports. Motor should be run for an indefinite period of time without addi-
tional lubrication.
12.5 BLOWER ASSEMBLY REMOVAL AND REPLACEMENT
Removing the blower assembly is not required for normal service and maintenance.
Removal is necessary for replacement of defective parts such as motor, blower wheel.
WARNING
If removal of the blower assembly is required, all disconnect switches supply-
ing power to the equipment must be de-energized and locked (if not in sight of
unit) so the field power wires can be safely removed from the blower assem-
bly. Failure to do so can cause electrical shock resulting in personal injury or
death.
43
Advertisement
Table of Contents
