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MAINTENANCE
To ensure continuing high performance, and to minimize the
possibility
of
premature
maintenance must be performed on this equipment. This
cooling unit should be inspected at least once each year by a
qualified service person. To troubleshoot unit, refer to Table 10,
Troubleshooting Chart.
NOTE TO EQUIPMENT OWNER: Consult your local dealer
about the availability of a maintenance contract.
WARNING
!
PERSONAL INJURY AND UNIT DAMAGE HAZARD
Failure to follow this warning could result in personal
injury or death and possible unit component damage.
The ability to properly perform maintenance on this
equipment requires certain expertise, mechanical
skills, tools and equipment. If you do not possess
these, do not attempt to perform any maintenance on
this
equipment,
other
recommended in the Owner's Manual.
WARNING
!
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow these warnings could result in
personal injury or death:
1. Turn off electrical power to the unit and install
lockout tag before performing any maintenance or
service on this unit.
2. Use extreme caution when removing panels and
parts.
3. Never place anything combustible either on or in
contact with the unit.
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Errors made when reconnecting wires may cause
improper and dangerous operation. Label all wires
prior to disconnecting when servicing.
The minimum maintenance requirements for this equipment are
as follows:
1. Inspect air filter(s) each month. Clean or replace when
necessary.
2. Inspect indoor coil, drain pan, and condensate drain
each cooling season for cleanliness. Clean when
necessary.
3. Inspect blower motor and wheel for cleanliness each
cooling season. Clean when necessary.
4. Check electrical connections for tightness and controls
for proper operation each cooling season. Service when
necessary.
5. Ensure electric wires are not in contact with refrigerant
tubing or sharp metal edges.
22
equipment
failure,
periodic
than
those
procedures
Specifications subject to change without notice.
Air Filter
IMPORTANT: Never operate the unit without a suitable
air filter in the return--air duct system. Always replace
the filter with the same dimensional size and type as
originally installed. See Table 1 for recommended filter
sizes.
Inspect air filter(s) at least once each month and replace
(throwaway--type) or clean (cleanable--type) at least twice
during each cooling season and twice during the heating
season, or whenever the filter becomes clogged with dust and
lint.
Indoor Blower and Motor
NOTE:
All motors are pre--lubricated. Do not attempt to
lubricate these motors.
For longer life, operating economy, and continuing efficiency,
clean accumulated dirt and grease from the blower wheel and
motor annually.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Disconnect and tag electrical power to the unit before
cleaning the blower motor and wheel.
To clean the blower motor and wheel:
1. Remove and disassemble blower assembly as follows:
a. Remove blower access panel (see Figure 16).
b. Disconnect 5 pin plug and 4 pin plug from indoor
blower motor. Remove capacitor if required.
c. On all units remove blower assembly from unit.
Remove screws securing blower to blower partition
and slide assembly out. Be careful not to tear
insulation in blower compartment.
d. Ensure proper reassembly by marking blower wheel
and motor in relation to blower housing before
disassembly.
e. Loosen setscrew(s) that secures wheel to motor
shaft, remove screws that secure motor mount
brackets to housing, and slide motor and motor
mount out of housing.
2. Remove and clean blower wheel as follows:
a. Ensure proper reassembly by marking wheel
orientation.
b. Lift wheel from housing. When handling and/or
cleaning blower wheel, be sure not to disturb balance
weights (clips) on blower wheel vanes.
c. Remove caked--on dirt from wheel and housing with
a brush. Remove lint and/or dirt accumulations from
wheel and housing with vacuum cleaner, using soft
brush attachment. Remove grease and oil with mild
solvent.
d. Reassemble wheel into housing.
e. Reassemble motor into housing. Be sure setscrews
are tightened on motor shaft flats and not on round
part of shaft. Reinstall blower into unit.
f. Connect 5 pin plug and 4 pin plug to indoor blower
motor. Reinstall capacitor if required.
g. Reinstall blower access panel (see Figure 16).
3. Restore electrical power to unit. Start unit and check for
proper blower rotation and motor speeds during cooling
cycles.
51901190402
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