1.14 Structure of warnings
Warning signs Type of danger
Warning – danger zone.
Signal word Meaning
DANGER! This combination of symbol and
signal word indicates an imminently
dangerous situation that will result
in death or serious injury if it is not
avoided.
WARNING! This combination of symbol and
signal word indicates a potentially
dangerous situation that can result
in death or serious injury if it is not
avoided.
CAUTION! This combination of symbol and
signal word indicates a possible dan-
gerous situation that can result in
minor injury if it is not avoided.
NOTICE! This combination of symbol and
signal word indicates a poten-
tially dangerous situation that can
result in material and environmental
damage if it is not avoided.
1.15 Safety fittings on the device
1.15.1 Overtemperature protection
The overtemperature protection is a safety unit that prevents combustible
heat transfer liquid from igniting due to high temperatures. All safety com-
ponents on the device are shut down to prevent fire from posing a danger.
An alarm signal also indicates that the overtemperature protection has been
activated. The temperature at which the safety fitting is activated must be
set in line with the heat transfer liquid used.
Repeat the checks of the overtemperature protection at regular intervals.
Further information Ä Chapter 9.2 “Maintenance intervals”
on page 141 and Ä Chapter 9.6 “Checking the overtempera-
ture protection” on page 144.
1.15.2 Low-level protection
The low-level protection is a safety unit that prevents damage to the device
and prevents the hot heater from igniting combustible heat transfer liquid. If
the fill level of heat transfer liquid level in the device falls below a specified
level, a warning is issued initially. If the fill level continues to fall, an alarm is
triggered. All safety components on the device are switched o as a result.
V6
Integral Process Thermostats and High-Temperature Thermostats14 / 198
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