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-800-497-4524 EIC SOLUTIONS, INC
.
215-443-5190
3.
OPERATION
3.1 THERMOSTAT SET POINTS AND HEATING/COOLING UNITS
SETTING THE THERMOSTAT
Your EIC air conditioner is equipped with an adjustable thermostat. The set point you
choose should be based on the desired internal temperature of the enclosure. The air conditioner
will run until the set point temperature is achieved within the enclosure and then the hot side fans
and the thermoelectric cooling modules will shut down. The cold side fan will continue to run,
circulating the air to maintain a uniform temperature within the enclosure.
HEATING AND COOLING UNITS
If you purchased an HC unit (heating and cooling), the heater operation is controlled by a
fixed-point thermostat. This thermostat is set to turn the heaters on when the temperature within
the enclosure falls to approximately 45
°
F and turn the heaters off when the temperature rises to
approximately 55
°
F.
The cooling operation is controlled by the adjustable thermostat just as it is with a cooling
only unit. To avoid having the heating and cooling on at the same time, do not set the cooling
thermostat below 65
°
F.
3.2 MAINTENANCE
MAINTENANCE
EIC Thermoelectric Air Conditioners are virtually maintenance-free. The only time
maintenance is required is when a unit is installed in an extremely dirty environment. In these
cases, the hot side heat sinks (outside the enclosure) should be inspected regularly for a build-up
of dust or dirt. If a build-up is present on the heat sink fins, it can be easily removed as follows:
1.
Disconnect the power from the unit.
2.
Dry dust/dirt can be removed using compressed air to blow out the heat sinks. Do not
direct any high-pressure air at the fans.
3.
Your AAC-120-4XT-xxx air conditioner is appropriate for NEMA 4X installations and is
designed to allow for water wash down of the hot side of the unit, which is outside of the
enclosure
(never the cold side, which is inside the enclosure).
A pressure washer can be
used to carefully clean the hot side heat sink fins when compressed air will not provide
adequate cleaning. Never direct high-pressure water at the fans. Never direct high-
pressure water at the joint formed by the mounting flange, gasket and enclosure. Never
allow the cold side of your unit to get wet
Keeping the hot side heat sink fins free from any insulating build-up of dirt or dust will ensure
long, trouble-free operation of your air conditioner.
ONLY NEMA 4X UNITS, WITH MODEL NUMBERS CONTAINING “4XT”, ARE DESIGNED FOR THE HOT
SIDE OF THE AIR CONDITIONER (OUTSIDE THE ENCLOSURE) TO TOLERATE EXPOSURE TO WATER.
NEVER EXPOSE THE COLD SIDE OF THE AIR CONDITIONER (INSIDE THE ENCLOSURE) TO WATER.
If you have any questions about any aspect of your EIC air conditioner, don’t hesitate to call us at
our toll-free number listed below or at 215-443-5190.
