Unit Description
7
5.
Unit Description
This unit fulfills the requirements of safety class 2 according
to DIN 12879 and is thus suitable for unsupervised continu-
ous operation.
The circulator pump motor is protected against thermal over-
loading.
5.1
Safety features
The comprehensive safety system is designed on the princi-
ple of the concept of the “single fault” (EN 61010). This as-
sumes that two separate faults do not occur simultaneously.
This system therefore offers protection against
one (single)
fault. This one fault will effectively occur automatically if
you...
•
do not read this manual,
•
do not correctly set the excess temperature protection,
i.e. your safety reserves have already been used up.
Such faults can include e.g.:
Fault in the temperature control unit:
⇒
Excess temperature
⇒
poss. fire danger
Leakage in the liquid circuit or
Evaporation of heat transfer liquid:
⇒
Low liquid level
⇒
poss. fire danger,
Pump blocked or
Heat transfer liquid is too highly viscous:
⇒
Motor overheating
⇒
poss. fire danger
Or also:
Excess temperature protection level not correctly set:
⇒
poss. fire danger
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