Temperature Control (Stc) - Siemens EH70650 Repair Instructions

5.4

Temperature control (STC)

The STC allows the user to keep the temperature constant as from the
instant that the user turns power on, without using additional
temperature sensors.
The STC system can be applied to any container, although the control
tolerance can vary depending on the size, the material and the
temperature that has been activated.
The STC function can be very useful for maintaining the optimum
temperature for fried dishes, for deep frying and for keeping food hot:
all without abrupt temperature changes and while consuming the
minimum possible energy.
The STC system works by evaluating the variation of the inductor-
container coupling with the temperature.
fundamentally, to the variation of the electrical resistivity of the
container base with the temperature.
Important!
The STC function does not control boiling (bubbling). This is due to
the fact that it applies the minimum energy in order to keep the
container temperature constant. Therefore, if you activate STC for
boiling (for example, using an espresso coffee maker, when steaming
or when using a pressure cooker), it is possible to observe that the
water will stop bubbling, although the temperature will continue to be
at the boiling point temperature.
The STC system evaluates the coupling by always using a frequency
of 35 kHz. This evaluation is made during 600 ms, and it is repeated
every 6 seconds. For the remaining 5.4 seconds, the system applies
the power necessary to keep the temperature at the level at which the
STC function was activated.
206_58300000105199_ara_en_h – 15.03.a
This variation is due,
Therefore, depending on the quantity of the food, the container and
the temperature, these power variations could be noted..
Attention!
In the event that very small containers are used, and with very little
content, when the STC function is selected at very low levels, the
temperature of the container may be increased due to the minimum
power that the system has to apply in order to evaluate the coupling.
The STC function works with the limitations described in the user
manual as regards the type of applications, the power levels prior to
activation, etc. Likewise, the user manual describes the possible
solutions when the STC function does not satisfy user expectations.
The STC limitations described in the user manual are detailed below.
Boiling or cooking with a pressure cooker.
1. Position the pot or pressure cooker.
2. To boil, put the switch in the cooking zone at cooking level 7.7
or 8. If the dish boils or if pressure has already formed in the
pressure cooker and the valve is up, activate temperature
control
3. To do so, press the "+" and "-" symbols at the same time.
For dishes that contain hot liquids, adjust as aforementioned, and
at the end add the food to the broth.
Grilling
Never heat oil, butter or lard without monitoring. There is a risk of
fire!
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