C.B.S. Scientific TTGEK-2401-220 - Manual (Page 20)

20
www.cbsscientific.com
3.2 Heater/Stirrer Set-Up and Programming – continued
3.2s Setting High/Low Temperature and Alarms
The Limits/Alarms sub-menu allows you to establish temperatures at which either power to the temperature control
components (heater/condenser) will be disconnected (Limits) or which Controller’s audible alarm will sound (Alarms).
Limit High Temperature — This feature provides additional safety and protection by allowing a selectable upper
temperature limit set point. To avoid an unwanted shutdown during regular operation, the high limit value should be
set at least 5°C higher than the selected control temperature. It should never be set higher than the Safety Set Point
temperature
If you attempt to enter a set point value that exceeds the Limit High value, the audible alarm will sound and a Warning
message will flash on the display when the Limit High value is reached. You will also be prevented from increasing
the set point value any further.
To clear a Limit High warning, enter a higher value for the Limit High or reduce the control temperature set point.
If the Limit High value is exceeded during operation (due to a Controller fault, excessive heat load, etc.), a Fault
message will appear on the display and power to the heater and compressor will be disconnected. The pump will
continue to run.
Alarm High Temperature — This feature is useful if you are using the bath to cool an external device. It alerts you
when bath temperature exceeds your programmed alarm high temperature setting (due to insufficient cooling,
blocked lines, etc.).
When the Alarm High value is exceeded, a Warning message flashes on this display and the audible alarm sounds.
Heater, compressor, and pump operation continue.
To clear an Alarm High warning, correct the problem or increase the Alarm High temperature value.
Alarm Low Temperature — This feature is useful if you are using the bath to warm an external device or need to
maintain the bath at a minimum temperature. It alerts you when bath temperature falls below your programmed alarm
low temperature setting.
When bath temperature falls below the Alarm Low value, a warning message flashes on the display and the audible
alarm sounds. Heater, condenser, and pump operation continue.