3
NOISY OPERATION:
•
AMBIENT TEMPERATURE:
Is the ambient temperature about 90°F or above? The unit will
need to run more at these elevated temperatures, therefore you will become more aware of
sound generated by the compressor and the fans.
•
REQUIRED RUN TIME:
Is the unit running continuously for long periods of time? As the
ambient temperature rises, the refrigerator requires more cooling, therefore sound from the
compressor and fans will become more noticeable.
•
RESIDUAL HEAT:
Is the unit located outdoors on a concrete or paved slab, or in a sunny
area? Residual heat present in the concrete or paving will raise the temperature of the intake
air entering the front of the unit. Consequently, the air moving through the condenser coil may
be relatively hot and therefore less efficient at cooling, causing the unit to run longer in order to
maintain the proper refrigerating capacity.
•
DEBRIS IN THE FAN BLADES:
Is there debris in the condenser fan blades? Not only can
debris physically stop the fan from rotating (as previously discussed), it can also block or
restrict air flow, thus preventing the unit from cooling. The fan blades may, in some cases,
continue to rotate, causing a rattling or similar sound as the blades contact debris trapped in
close proximity to the fan.
•
FULLY STOCKED:
is the unit fully stocked? If the unit is not fully stocked, or only partially
filled, then the unit will need to work harder. Air does not hold temperature, products do. If
there is no product inside the refrigerator, the unit will cycle ON and OFF several times per
hour. If the unit is fully stocked, the run-time will be extended but also the off-time, allowing
the compressor to cool down properly between cycles. This will help the unit to run more
efficiently.
PERFORMANCE ENVELOPE:
The ARDI has a performance envelope up to 110°F ambient temperature. This means that the
unit is capable of maintaining an internal cabinet temperature of between 22°F and 40°F when
exposed to 110°F ambient air temperature. In order to maintain the internal cabinet temperatures
stated above, the unit will operate without shutting off when the ambient air temperature exceeds
85 to 90°F These peak temperatures occur at least for a few hours per day in hot weather
locations and should be considered normal. The unit will return to normal cyclic operation after
the ambient air temperature falls back below 85 to 90°F. Please note, ambient air temperature is
a complex measurement to establish, especially outdoors. Your local weather forecaster, when
reporting current conditions, will be referring to a temperature measured in a shaded and
ventilated box located at least four feet above the ground. If the reported temperature is 100°F,
and your unit is sat on a concrete slab in full sunlight, then the ambient temperature around your
unit will be substantially higher than the reported 100°F.
