MAINTENANCE
To ensure continuing high performance, and to reduce the
possibility of premature equipment failure, periodic 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 cooling of units, refer to Troubleshooting chart in
back of book.
NOTE: TO EQUIPMENT OWNER: Consult your local dealer
about the availability of a maintenance contract.
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 than those procedures recommended in the Owner's
Manual.
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, outdoor 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. For first heating
season, inspect blower wheel bimonthly to determine proper
cleaning frequency.
4. Check electrical connections for tightness and controls for
proper operation each cooling season. Service when
necessary.
5. Check the drain channel in the top cover periodically for
blockage (leaves, insects). Clean as needed.
ELECTRICALSHOCK HAZARD
Failure to follow these warnings could result in personal
iniury or death:
1. Turn off electrical power and install lockout tag to the
unit 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.
Step 1 -- 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 or whenever the filters become clogged with
dust and lint.
Replace filters with the same dimensional size and type as
originally provided, when necessary.
Step 2 -- Unit Top Removal (Condenser-Coil
Side)
NOTE: When performing maintenance or service procedures that
require removal of the unit top, be sure to perform all of the routine
maintenance procedures that require top removal, including coil
inspection and cleaning, and condensate drain pan inspection and
cleaning.
ELECTRICALSHOCK HAZARD
Failure to follow this warning could result in personal
iniury or death.
Disconnect electrical power, and install lockout tag to the
unit before removing top.
Only qualified service personnel should perform maintenance and
service procedures that require unit top removal.
Refer to the following top removal procedures:
1. Remove 7 screws on unit top cover surface. (Save all
screws.)
2. Remove 2 screws on unit top cover flange. (Save all
screws.)
3. Lift top from unit carefully. Set top on edge and make sure
that top is supported by unit side that is opposite duct (or
plenum) side.
4. Carefully replace and secure unit top to unit, using screws
removed in Steps 1 and 2, when maintenance and/or service
procedures are completed.
Step 3 -- Evaporator Blower and Motor
For longer life, operating economy, and continuing efficiency,
clean accumulated dirt and grease from the blower wheel and
motor annually.
ELECTRICALSHOCK HAZARD
Failure to follow this warning could result in personal
iniury or death.
Disconnect electrical power, and install lockout tag to the
unit before cleaning and lubricating the blower motor and
wheel.
To clean the blower wheel:
1. Access the blower assembly as follows:
a. Remove top access panel.
b. Remove 3 screws that hold blower orifice ring to blower
housing. Save screws.
c. Loosen setscrew(s) which secure wheel to motor shaft.
2. Remove and clean blower wheel as follows:
a. Lift wheel from housing. When handling and/or
cleaning blower wheel, be sure not to disturb balance
weights (clips) on blower wheel vanes.
b. 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 a soft
brush attachment. Remove grease and oil with a mild
solvent.
c. Reassemble blower into housing. Place upper orifice
ring on blower to judge location of the blower wheel.
Blower wheel should be approximately 0.2-in. (5 mm)
below bottom of orifice ring when centered correctly.
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