Commissioning; Setting The Safety Circuit; Setting The Operating Modes; Heating Function - IKA HBR 4 digital Mode D'emploi

Observe the ambient conditions (temperature, humidity, etc.) listed
under Technical Data.
Please follow above directions to ensure safe operation and pre-
vent device from suffering damage.
When activating the HBR 4 control devices an automatic self-test
is carried out, all LEDs flash and all segments (Fig. 1) are visible on
the LCD display. After this, the LCD displays in Fig. 2 to Fig. 6 are
visible (standard factory setting).
When setting the safety circuit an upper temperature limit be-
tween 50 °C and 210 °C is set. The safety circuit can only be set
in operating mode A.
• Switch on the device.
The device can be operated in three different operating modes
(display see Fig. 9 to Fig. 11). To toggle from one operating mode
to the other keep the button "Mode" (D) depressed when switch-
ing on the device (min. 5 secs). Sequence A-B-C-A-B-C-A- etc.
Operating mode A
This operating mode is the factory setting of the device. When
switching on the device the heating and stirring functions are de-
activated. The set values last set are saved and are used when the
heating or stirring functions are switched on. The set values can
be changed.
With the button "Mode" (D) the correcting variable desired (set
temperature) can be preselected. The heating bath temperature of
the device is kept constant by the control circuit and is additionally
monitored by the safety circuit. In the event of a disturbance in
the control circuit, the heating bath is switched off permanently
by the safety circuit. In the event of a fault in the control circuit
or in the safety circuit, the LED "Temp." flashes yellow and green
alternately. The LED next to the reset button lights up red.

Commissioning

The unit is ready for service when
the mains plug has been plugged
in.

Setting the safety circuit

Setting the operating modes

Heating function

The device is switched on with the 2-pole ON/OFF mains switch (A).
When switched on the lamp in the rocker switch lights up green.
• Within 5 seconds of the display Fig. 7 appearing, keep the but-
ton "Mode" (D) pressed down and set the safety temperature
desired by simultaneously turning the control knob (B).
• Release the button "Mode" (D). For two seconds the safety tem-
perature is set and safe OK Fig. 8 is displayed; the safety tem-
perature set is saved.
The safety circuit is automatically checked each time the device is
restarted.
Operating mode B
When switching on the device the state of the heating and stirring
functions are taken over before the device was switched off last as
well as the last values set. The set values can be changed.
Operating mode C
When switching on the device the state of the heating and stirring
functions are taken over before the device was switched off last
as well as the last values set. The set values cannot be changed.
The error is also displayed on the LCD (see chapter "Error mes-
sages").
The heating function cannot be started.
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