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• ALARM RESET
Press this button to open the optional relay for the remote alarm. This does not
correct the alarm condition which is indicated by the flashing alarm light.
• DRAIN TEST
Press this button to verify drain operation.
• °F/°C
This button selects Fahrenheit or Celsius temperature scale for the display.
• UP/DOWN ARROWS
These buttons raise or lower the exchanger temperature and increase or
decrease the drain open and drain close settings.
COMPUSTAT CONTROLLER LIGHTS
• SYSTEM ENERGIZED
Indicates when power is applied to unit.
• DRYER ON
Illuminated when the ON/OFF switch has been pressed to place the unit in
operation. The refrigerant system may start at any time when the light is on.
• REFRIGERATION COMPRESSOR ON
This light comes on when the refrigeration compressor is operating.
• DRAIN OPEN
This light comes on when power is applied to open the timed solenoid drain.
• DEG. F
Illuminated when readings are in degrees Fahrenheit.
• DEG. C
Illuminated when readings are in degrees Celsius.
• HIGH TEMP. ALARM
When this light is on, it indicates that the exchanger temperature has risen to
12°F or 7°C above the exchanger temperature set point.
• LOW TEMP. ALARM
When this light is on, it indicates that the exchanger temperature has dropped
below 29°F or -2°C. This condition stops the compressor and it will not restart
until the temperature has risen two degrees above exchanger set point.
COMPUSTAT CONTROLLER DISPLAY
The display is composed of two 3/4” letters. These are used to display tempertures
in the 15°F to 99°F range. Temperatures outside this range will be displayed as
“EE”. The display also informs you of fault or delay conditions.
•
PF
indicates a probe failure. This is usually caused by a probe being unplugged,
damage to the probe lead or a defective probe.
•
cd
indicates that the refrigerant compressor will not start until the end of a three
(3) minute safety delay. The display of “cd” is immediately followed by the
number of minutes left in the delay.
