Switching the appliance on and off
Connect the appliance to the mains - the display reads OFF.
To switch the appliance on: Keep the ON/OFF button pressed for approx. 5 seconds - the display reads ON.
No alarm is displayed or sounded when the appliance is switched on for the first time.
When it is switched on a second time the appliance is in a status that is the equivalent of an alarm status (power failure, interior temperature too high).
The HACCP LED at the bottom right of the display flashes. Press button 
.
Press 
+ 
for 5 seconds. The display will read 
. The HACCP LED will now light up permanently.
Press 
for 5 seconds.
The electronic control system will switch back to normal operat- ing mode.
To switch the appliance off: Keep the ON/OFF button pressed for approx. 5 seconds - the display reads OFF.
Setting the temperature
•Press button 
for 1 second. The temperature display flashes.
•To increase the temperature (warmer): press button 
.
•To reduce the temperature (colder): press button 
.
•Press button 
again.
The desired temperature setting is saved.
Adjustable temperature range
LGUex 1500 from
LGex 3410 from
Calling up the temperature history
The maximum and minimum interior temperature are stored elec- tronically. These temperatures can be called up.
To call up the temperature:
Press 
for 5 seconds. Display = 
Display = 
Display = 
Display = 
Press 
for 5 seconds. Display = 
Period in hours in which the interior tem- peratures were measured. In this example it was 3 hours.
Maximum (warmest) temperature measured during these 3 hours.
Lowest temperature measured during these 3 hours.
To set the observation period back to zero, proceed as follows.
Display = 
Display = 
Display = 
Display = 
Press 
for 5 seconds. Display = 
.
Press 
for 5 seconds.
The electronic control system will switch back to normal operat- ing mode.
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