Perma Pure Modular Board - Manual (Page 2)

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”.
Detailed LED Description
The LED indicators show the status of the cooler.
The top LED, which is green, will turn on when impinger temperature is
below the user set ‘Ready’ temperature.
The top LED will turn off when impinger temperature is above the user set
‘Ready’ temperature.
The middle LED, which is green, will turn on there is not a ‘Water Slip’
failure showing the system is working correctly.
The middle LED will turn off when water is detected.
The bottom LED, which is red, will turn off there is not a ‘TC Failure’
showing the system is working correctly.
The bottom LED will turn on when an open condition is detected on the
thermocouple.
The operation of the ‘Ready’ and Water Slip’ indicators changes if the
user selects the relay latching option. Once the ‘Ready’ temperature is
reached for the first time the latching option goes into effect. If an alarm
occurs after the first ‘Ready’ indication the relays will remain off until the
user supplies a contact closure to the board to reset the alarm. The LED
indicators will blink when the alarm condition has been removed but the
relay has not yet been reset.
1
St
Frozen
Basic Display Description
3 digit plus sign temperature display
Temperature is displayed in tenths of °C
Green LED to display ‘Ready’ status
Green LED to display ‘Valve’ status
Red LED to display ‘TC Fail’ status
Detailed Display Description