Grant Instruments LTC2 - Manual (Page 17)

LTC2 30933 V2
Operating Manual Page 16
www.grantinstruments.com
Note: the LTC2 will continue to control at the set temperature after the timer
reaches zero – the heater will not switch off.
5.2.14 Cancelling the timer
The countdown timer can be easily cancelled.
1. Press the F button twice – the display will show “Cloc”.
2. Press the S button to select.
3. Use the main dial to select “Off” and press the S button to select. The display will
revert to the bath temperature and the timer will be cancelled.
5.2.15 Setting a high temperature warning alarm
The high temperature alarm sets a warning buzzer to sound if the bath temperature
exceeds a defined level.
1. Press the F button three times – the display will show ”Alar”.
2. Press the S button to select.
3. Use the main dial to select “On” and press the S button to select. The display flashes
the high temperature alarm value. Rotate the dial to set the high temperature alarm
required.
4. Press the S button to save and return to liquid temperature.
If the high temperature alarm value is exceeded then LTC2 will sound the buzzer
intermittently and show “-Al-” on the display. The alarm can be acknowledged by
pressing either the F or S buttons. However, the alarm is persistent and will trigger again
if the temperature still exceeds the high temperature value. The alarm can be cancelled
by following the steps above but using the dial to select “Off” in step 3 and pressing the S
button to confirm.
Note: the high temperature alarm will not switch off the heater.