Perma Pure Modular Board - Manual (Page 5)

If both a ‘TC Failure’ and a ‘Water Slip’ failure are detected the display
will switch between showing the letters “tcF” and a symbolic “SLP”.
The display switches every second between “tcF” and “SLP”.
The single ‘Water Slip’ alarm will be displayed on both channels.
A single channel, channel 1, can be constantly displayed be selecting the
switch option in set up and omitting the switch.
Detailed LED Description
The LED indicators show the current channel being displayed.
The top LED, which is green, will turn on when channel 1 is displayed.
The lower LED, which is green, will turn on when channel 2 is displayed.
NJ Thermocouple Display
Basic Display Description
3 digit plus sign temperature display
Temperature is displayed in tenths of °C
Green LED indicate 1 channel displayed
Green LED indicate 2 channel displayed
Detailed Display Description
The digital display shows both temperature and status of the cooler.
The display can be set to constantly switch between the two channels or to
work with an external dry contact to select channel to be displayed.
The display functions the same for both channels.
The display will display temperature constantly when impinger
temperature is below the user set ‘Ready’ temperature and no other faults
are present. One fault is the ‘Water Slip’, the sensing of liquid water
downstream of the sensor, though the use of a water slip sensor. The other
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 ‘Water Slip’ failure is detected the display will switch between
showing the measured temperature and a symbolic “SLP”. The display
switches every second between “SLP” and the temperature.