Freezestat Led; Low Reservoir Level Led; Compressor Recycle Led; High Refrigerant Pressure Led - Conair EP2 Series Original Instructions Manual

pump to establish flow. This safety will shut off the
pump and the compressor. If the chiller has been
shut down by the No Flow safety, the Start button
must be depressed in order to restart the pump and
reset the 5 second time delay.

Freezestat LED

If the coolant temperature being delivered to the
process drops below the Freezestat Limit (FLS)
setting, the compressor will shut off, the pump will
remain running, and the Freezestat LED will be
illuminated. The Freezestat Limit should be set 10°F
above the freezing point of the glycol solution and
10°F below the minimum operating temperature.
The Freezestat is factory set at 38°F. In order to reset
the Freezestat fault press the Alarm Reset button
after the temperature has risen 5°F above the
Freezestat Limit. See the Program Menu section for
instructions on how to adjust FLS.

Low Reservoir Level LED

When the water level in the reservoir drops below
the lower limit of the float switch, the Low Water
Level LED is illuminated and the pump will shut off.

Compressor Recycle LED

The number of compressor startups per hour is
limited in order to maximize compressor lifetime and
ensure proper return of oil to the compressor
crankcase. This light is illuminated yellow whenever
there is a wait period before the compressor can be
started.

High Refrigerant Pressure LED

If the compressor discharge refrigerant pressure
exceeds the setting on the high refrigerant pressure
safety, the compressor and pump will shut off and
the High Refrigerant Pressure LED will be
illuminated. Pressing the Alarm Reset button will
reset the High Refrigerant Pressure fault, as long as
the High Refrigerant Pressure switch located at the
discharge of the compressor has been manually
reset.
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Low Refrigerant Pressure LED

If the compressor suction pressure drops below the
setting on the low refrigerant pressure safety, the
compressor will shut off, the pump will remain
running, and the Low Refrigerant Pressure LED will
be illuminated. Pressing the Alarm Reset button will
reset the Low Refrigerant Pressure fault, as long as
the refrigerant pressure has risen back up above the
safety's cutout level.

Program Mode LED

The Program Mode LED will flash yellow while in the
programming menu.

Set Point Temperature Display

The Set Point Temperature Display normally displays
the set point temperature. An indicator light in the
lower right corner of this display area shows the
temperature unit of measure that has been set in the
programming menu. When the display is set to °F
there will be a green indication light, when the
display is set to °C there will be no green indicating
light. See the Program Menu section to change the
temperature scale units of measure.
In addition to displaying the set point temperature,
the Set Point temperature display shows other alarm
and programming information.

Process Temperature Display

The Process Temperature Display displays the
selected supply or return temperature. An indicator
light in the lower right corner of the display area
show the temperature displayed. When the display is
set to supply temperature there will be an orange
indicating light, when the display is displaying return
temperature there will be no orange indicating light.
To toggle the Process temperature display from
supply to return temperature, press and release the
Display/Program button. The display will return to
the default Supply temperature automatically after 5
seconds without a button press. The display will
return to the default Supply Temperature
automatically after 5 seconds. In addition to
displaying the selected temperature, the display
shows other alarm and programming information.