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Page 11 of 11506318-03C mrcool.com
Important System Information
• Your system should never be operated without a clean
• Return air and supply air registers should be free from
Regular Maintenance Requirements
service technician. These regular visits may include
(among other things) checks for:
• Motor operation
• Ductwork air leaks
• Coil & drain pan cleanliness (indoor & outdoor)
• Electrical component operation & wiring check
• Proper refrigerant level & refrigerant leaks
•
• Drainage of condensate
•
• Blower wheel alignment, balance & cleaning
• Primary & secondary drain line cleanliness
• Proper defrost operation (heat pumps)
There is some routine maintenance procedures you can do
to help keep your system operating at peak performance
between visits.
Air Filter
common cause of poor heating / cooling performance and
compressor failures.
Indoor Coil
it should require minimal cleaning. Use a vacuum cleaner
and soft brush attachment to remove any accumulation of
However, perform this maintenance only when the coil is
completely dry.
If the coil cannot be cleaned by this method, call your
dealer for service. It may need a detergent solution and
rinsing with water for cleaning, which may require coil
removal. You should not attempt this yourself.
Condensate Drain
of drainage and clean if necessary.
Condenser Coils
Grass cuttings, leaves, dirt, dust, lint from clothes dryers,
and fall off from trees can be drawn into coils by movement
of your unit and could cause damage to the condenser.
Periodically, debris should be brushed from the condenser
coils.
SHARP OBJECT HAZARD!
Condenser coils have sharp edges. Wear adequate
body protection on body extremities (e.g. gloves).
FAILURE TO FOLLOW THIS WARNING COULD
RESULT IN BODILY INJURY.
WARNING
Use a soft bristle brush with light pressure only. DO NOT
may affect unit operation.
Painted Surfaces
of automobile wax should be applied every year. In
geographical areas where water has a high concentration
of minerals (calcium, iron, sulfur, etc.). It is recommended
that lawn sprinklers not be allowed to spray the unit. In
such applications, the sprinklers should be directed away
from the unit. Failure to follow this precaution may result
components.
In sea coast areas, special maintenance is required due
to the corrosive atmosphere provided by the high salt
concentration in ocean mists and the air. Periodic washing
of all exposed surfaces and coil will add additional life to
your unit. Please consult your installing dealer for proper
procedures in your geographic area.
IF YOUR SYSTEM DOES NOT WORK, BEFORE
REQUESTING A SERVICE CALL:
1. Ensure thermostat is set below (cooling) or above
(heating) room temperature and that the system lever
is in the “COOL”, “HEAT” or “AUTO” position.
2.
conditioner may not function properly.
3. Check indoor and outdoor disconnect switches.
blown. Reset breakers/replace fuses as necessary.
4. Inspect the outdoor unit for clogged condenser coils,
(grass cuttings, leaves, dirt, dust or lint). Ensure that
branches, twigs or other debris are not obstructing the
condenser fan.
IF YOUR SYSTEM STILL DOES NOT OPERATE,
CONTACT YOU SERVICING DEALER.
Be sure to describe the problem, and have the model and
serial numbers of the equipment available.
If warranted replacements parts are required, the warranty
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