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14.1 IR FILTER
Check the system filter every ninety days or as often as found to be necessary and if
obstructed, clean or replace at once.
FILTER M INTEN NCE
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.
14.2 INDOOR COIL - DR IN P N - DR IN 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.
It is recommended that upon initial start up and annually thereafter, the coil should be
cleaned using an evaporator coil cleaner (Part # 85-401 or equivalent). This will help to
insure proper drainage of condensate from the coil assembly.
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.
14.3 BLOWER MOTOR ND 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.
14.4 LUBRIC TION
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.
14.5 BLOWER SSEMBLY REMOV L ND REPL CEMENT
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.
After extended use, removal of the blower assembly may become necessary for a thor-
ough cleaning of the blower motor and wheel.
W RNING
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 assembly.
Failure to do so can cause electrical shock resulting in personal injury or
death.
• Mark field power supply wiring (for replacement) attached to terminal block or circuit
breaker(s) on blower assembly. Remove wiring from terminal block or circuit break-
er(s).
• Mark low voltage control wiring (for replacement) where attached to unit control pig-
tails on right side of blower housing. Remove wire nuts attaching field control wiring to
unit control pigtails.
W RNING
To avoid electrical shock which can result in personal injury or death, use only
the screws furnished in the motor shell mounting holds. Screws are #8-18 x .25
in. long blunt nose thread forming. Screws longer than 1/4 in. may contact the
motor winding.
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