RECHARGEABLE BATTERY
•
In the event of a power failure, an integrated rechargeable battery monitors the electronics for a maximum of
48 hours.
•
This battery is recharged automatically when the unit is connected.
•
If the charge in the battery is insufficient to allow monitoring, the BAT LOW error message appears in the
display.
•
A BAT FAIL error message indicates that the battery is either defective or connected incorrectly.
•
The battery should be replaced every 2 years as a precaution. This replacement should only be carried out
by a recognised service engineer. The unit must be dead before the battery is removed.
•
The rechargeable battery is a lead accumulator which, if defective, must be disposed of separately.
LED TEST
•
Pressing the
key for 5 seconds starts an LED test. All the LEDs and all the seg-
ments of the display are switched on briefly one after the other.
•
In the event of a power failure, the display is switched on with the
Power Failure section). In this case, any available interior lighting is not switched on.
ALARM HISTORY
•
The Alarm History contains all the relevant values that occurred during a temperatu-
re alarm. If either of the two Alarm History LEDs comes on, this means that data can
be retrieved from the memory.
•
To retrieve data from the memory, the relevant Alarm History key
alarm) or
(for the cold alarm) must be pressed.
•
If the
or
key is pressed successively, the following values are displayed:
MAX or MIN
Maximum or minimum temperature value during the alarm
phase
AVG
Average temperature during the alarm phase
DUR
Duration of the alarm phase
•
Repeatedly pressing the
display.
•
If the Alarm History values have been called up and there is no new alarm situation,
the Alarm History LED goes out. The values remain stored, however, until there is a new temperature alarm.
•
Simultaneously pressing the Alarm History key
sage HIST DEL confirms the deletion.
•
If there has been no temperature alarm during a certain period, the stored Alarm History data is automati-
cally deleted.
ALARM SITUATION
The following alarm situations may occur:
T T e e m m p p e e r r a a t t u u r r e e a a l l a a r r m m
•
A temperature alarm is triggered when the inside temperature reaches either of the two preset alarm points.
•
The temperature indicator in the display starts flashing
•
The
LED flashes
•
The audible alarm sounds
or
key takes you back to the normal temperature
or
9
key (see the
(for the warm
and the reset key
clears the memory. The mes-