Perma Pure Modular Board - Manual (Page 3)

The digital display shows both temperature and status of the cooler.
The display will display temperature constantly when impinger
temperature is below the user set ‘Ready’ temperature and no other faults
are present. The fault would be a ‘TC Failure’ indicating an open
thermocouple sensor.
The display will blink the temperature when impinger temperature is
above the user set ‘Ready’ temperature and no other faults are present.
The display switches every second between blank and the temperature, in
this condition.
If a ‘TC Failure’ is detected the display will switch between showing
blank and the letters “tcF”.
Detailed LED Description
The LED indicators show the status of the cooler.
The top LED, which is green, will turn on when active impinger
temperature is below the user set ‘Ready’ temperature. Since this is a
switching system the ‘Ready’ indication is tied to the active impinger.
The top LED will turn off when the active impinger temperature is above
the user set ‘Ready’ temperature.
The middle LED, which is green, will turn on the flow control valve is on.
The valve is used to switch the flow stream between the cycling
impingers. The valve is on when the stream is flowing through the 2
nd
impinger.
The bottom LED, which is red, will turn off there is not a ‘TC Failure’ for
the 1
st
frozen impinger only
The bottom LED will turn on when an open condition is detected on the
thermocouple.
2
nd
Frozen
Basic Display Description
3 digit plus sign temperature display
Temperature is displayed in tenths of °C
Detailed Display Description
The digital display shows both temperature and status of the cooler.