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VIII. Maintenance
Kooltronic Air-Cooled Air Conditioners require routine cleaning of the condenser coil (if necessary) and the air
filters (if they are supplied) to assure unimpeded airflow through the condenser heat exchanger. It is not possible to
recommend specific condenser coil or filter cleaning intervals, since the level and the nature of airborne particulate
matter differs widely with each installation. It is generally sufficient to clean the condenser coil and/or the aluminum
mesh filter when the outer surfaces appear covered with a thin layer of dust, lint or other foreign matter. The
condenser coil can be washed or blown out with air, depending on the foreign matter involved. The aluminum mesh
filter can be washed with warm water. Appropriate disposable replacement filters are available from Kooltronic.
If routine condenser coil or filter service is neglected or delayed, the air conditioner will not perform at its design
capacity. The first indication of an excessively clogged condenser coil or air filter is usually a gradual increase of
temperature within the equipment cabinet. If operation is continued under these conditions, the compressor will be
shut off by the thermal overload device. The compressor will restart when its external temperature drops below the
protector threshold setting and the compressor will continue to cycle on and off. Continued operation under these
conditions will cause damage, shorten compressor life and void the warranty.
CAUTION
A. Filter Removal and Service
Remove the screw from the filter holder. Remove the filter from the filter holder. After removal, flush filter
under warm running water with the clean side up. If accumulated dirt is oily, wash in a detergent bath,
followed by a warm water rinse as above.
CAUTION
B. Blowers
The design life of the blowers used in all Kooltronic Air Conditioners is substantially in excess of 20,000
hours. All Kooltronic condenser and evaporator blowers are equipped with automatic-reset thermal
overload protectors.
If field replacement of a blower motor is necessary, most blower assemblies, including the mounting plate, are
readily removable. Each of the blower mounting plates is held to the air conditioner cabinet structure by screws
and nuts. For installation of the replacement blower, electrical connections may be broken at the terminal
block, or power leads may be cut and appropriately spliced together.
Before opening the air conditioner, disconnect all power.
Do not operate the air conditioner for extended periods of time with the
filter removed. The condenser coil may become clogged with dust or
lint from the air entering the face. A clogged condenser coil is not
readily detected and will give the same reaction as a clogged filter. A
clean filter is the best protection.
