Maintenance; Homeowner Information - Lennox Merit Series 13ACX Installation Instructions Manual

Maintenance

WARNING
Electric shock hazard. Can cause
injury or death. Before attempting to
perform any service or maintenance,
turn the electrical power to unit OFF at
disconnect switch(es). Unit may have
multiple power supplies.
WARNING
Improper installation,
service or maintenance can cause personal injury,
loss of life, or damage to property.
Installation and service must be performed by a
licensed professional installer (or equivalent) or a
service agency.
At the beginning of each cooling season, the system
should be checked as follows:
OUTDOOR UNIT
1. Clean and inspect outdoor coil (may be flushed with a
water hose). Ensure power is off before cleaning.
2. Outdoor unit fan motor is pre−lubricated and sealed.
No further lubrication is needed.
3. Visually inspect all connecting lines, joints and coils for
evidence of oil leaks.
4. Check all wiring for loose connections.
5. Check for correct voltage at unit (unit operating).
6. Check amperage draw on outdoor fan motor.
UNIT NAMEPLATE: _________ ACTUAL: __________
7. Inspect drain holes in coil compartment base and
clean if necessary.
NOTE - If insufficient heating or cooling occurs, the unit
should be gauged and refrigerant charge should be
checked.
INDOOR COIL
1. Clean coil if necessary.
2. Check connecting lines, joints and coil for evidence of
oil leaks.
3. Check condensate line and clean if necessary.
INDOOR UNIT
1. Clean or change filters.
2. Blower motors are pre−lubricated and permanently
sealed. No more lubrication is needed.
3. Adjust blower speed for cooling. Measure the pressure
drop over the coil to determine the correct blower cubic
feet per minute (CFM). Refer to the unit information
service manual for pressure drop tables and procedure.
4. Belt Drive Blowers − Check belt for wear and proper
tension.
506081−01 09/08
adjustment, alteration,
5. Check all wiring for loose connections.
6. Check for correct voltage at unit. (blower operating)
7. Check amperage draw on blower motor.
UNIT NAMEPLATE: _________ ACTUAL: __________

Homeowner Information

Electric shock hazard. Can cause
injury or death. Before attempting to
perform any service or maintenance,
turn the electrical power to unit OFF at
disconnect switch(es). Unit may have
multiple power supplies.
IMPORTANT
Sprinklers and soaker hoses should not be installed
where they could cause prolonged exposure to the
outdoor unit by treated water. Prolonged exposure
of the unit to treated water (i.e., sprinkler systems,
soakers, waste water, etc.) will corrode the surface
of steel and aluminum parts
performance and longevity of the unit.
NOTE − A white residue may appear on the coil guards and
grilles on outdoor units. The residue is a non−toxic
byproduct of manufacturing the flexible coating. It can be
removed by wiping the coil guard with a cloth.
            Â
            Â
            Â
            Â
            Â
            Â
PUSH PIN
            Â
MESH
SCREEN
            Â
Figure 38. Cleaning debris from mesh
Maintenance and service must be performed by a qualified
installer or service agency. At the beginning of each
cooling season, the system should be checked as follows:
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WARNING
and
9 PINS USED ON −048
AND −060; 6 PINS ALL
OTHERS
diminish