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• The filter in the unit is a cleanable type. Clean filter using cold water and allow filter to
dry. no oiling or coating of the filter is required or recommended.
• New filters to replace those supplied in unit are available from your local distributor.
TO ACCESS AIR FILTER:
1. Locate thumb screws on filter access door and remove.
2. Remove filter access door by tilting it down from the top.
3. Slide filter out.
• Internal filter is NOT used in downflow air configuration.
12.2 INDOOR COIL - DRAIN PAN - DRAIN LINE
Inspect the indoor coil once each year for cleanliness and clean as necessary. It is nec-
essary to remove the filter and check the return air side of the coil for debris.
• Generally, the coil can be easily cleaned when it is dry. If the coil is coated with dirt or
lint, blow compressed air or nitrogen through the supply side of the coil fins blowing
dirt or lint from the return air side of the coil onto the filter or cardboard placed
between filter and coil. Be sure lint and dirt is removed from the filter and return air
system.
• If the coil is coated with oil or grease, clean it with a mild detergent and water solu-
tion. Rinse the coil thoroughly with clear water. Be careful not to splash water exces-
sively into unit and system.
• Inspect the drain pan and condensate drain at the same time the cooling coil is
checked. Clean the drain pan and condensate drain by removing any foreign matter
from the pan. Flush the pan and drain tube with clear water.
• If the drain tube is restricted, it can generally be cleaned with high pressure water.
Remove the drain line from the unit away from the pan and coil to clear the drain line.
IMPORTANT: Do not use caustic household drain cleaners in the condensate 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. With the system air filter in place, 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 components such as motor, blower wheel and
electric heater(s). After extended use, removal of the blower assembly may become nec-
essary for a thorough cleaning of the blower motor and wheel.
WARNING
IF REMOVAL OF THE BLOWER ASSEMBLY IS REQUIRED, ALL DISCONNECT
SWITCHES SUPPLYING POWER TO THE AIRHANDLER MUST BE DE-ENER-
GIZED 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.
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