Alfresco ARXE42 User Manual

ARXE-42

SERVICE AND PARTS MANUAL

File name: ARXE-42 Service Manual.pub Last revised: Tuesday, June 21, 2016

TROUBLESHOOTING AND SERVICE GUIDE

The following is intended as a brief service guide, designed to diagnose most common problems.
It is intended to be used only as a guideline. Should the unit require replacement of components,
those components must be replaced by a trained and licensed refrigeration professional. While
the unit is within the factory warranty period, all repairs require factory authorization before the
work is performed.

UNIT NOT COOLING:

 POWER TO THE UNIT: Is there power to the unit? Is the voltage within ± 10% of 115 VAC?

Low power conditions affect the amperage draw of the compressor, therefore requiring more
amperes at start up. If the amperage draw is too high, the compressor safety relay could trip,
leading to component premature failure. If the compressor is tripping on its safety relay at
startups, then the unit will not refrigerate as required.

 COMPRESSOR NOT RUNNING: When the unit calls for cooling to begin, power is supplied to

the compressor and condenser fan simultaneously, but the power to the compressor is via a
time delay set to ten minutes. Therefore, the fan will run for ten minutes before the
compressor starts; this is normal.

 CONDENSER FAN NOT RUNNING: Is the compressor running but not the condenser fan? If

the compressor is running, then the condenser fan should be running. Verify that power is
being supplied to the fan motor, and that the fan blades rotate freely. Check for debris
(leaves, paper, grass clippings, etc.) in the fan blades, these may prevent the fan from
rotating.

UNIT NOT HOLDING TEMPERATURE CORRECTLY:

 EVAPORATOR INTAKE: Is the evaporator coil intake blocked by product? The evaporator

unit has been designed to prevent products such as bottles, cans or other rigid packaging from
blocking the intake. However, products in soft flexible packaging may still be positioned in a
way which blocks some, or all of the air intake slots. If the air intake slots are obstructed, then
products must be rearranged to clear the slots, thereby permitting air to be drawn into the
evaporator coil.

 DIGITAL TEMPERATURE CONTROL: Is the control set correctly? Please refer to the

recommended settings in the user manual, and follow the instructions for setting the control. If
the thermostat is not set to suit the prevailing conditions, then the product may not be
refrigerated to your liking. The wrong setting may also cause condensation to form inside the
unit, or excessive ice to form in the evaporator coil, thereby blocking air flow through the coil.

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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 ARXE-42 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 or mounted just above a concrete slab in full sunlight, then the ambient
temperature around your unit will be substantially higher than the reported 100°F.

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