Hettich AG, Seestrasse 204a, 8806 Baech, Switzerland
Operator Manual_DancerPlus_EN_rev, 1.1
Page 22
3.0
Individual operating functions
3.0.1
Release valve
The release valve switch (Fig. 5 no. 4) is used to block or open the release inlet (Fig. 6 no. 3) on the rear side of
the DancerPlus.
The valve opens in a de-energised state so that the samples can be removed from the DancerPlus in the event of
a power interruption.
During operation with a Vacuubrand® diaphragm pump in AUTO mode, the release valve should
not be opened during the cycle, otherwise the cycle will have to be restarted from the very
beginning in order to prevent the samples from being overboiling.
3.0.2
Compartment heater
The compartment heater switch (Fig. 5 no. 5), switches the compartment heater, which heats the wall of the
vacuum chamber, on and off. When the vacuum chamber wall is heated, condensation formation on the cold
vacuum chamber wall by solvent gases is reduced or completely prevented.
The compartment heater is controlled in parallel to the IR lamp heating.
At temperatures of 70°C and above, the safety device may (switching hyst3.0°C/-5.0°C),
in certain circumstances, interrupt the compartment heating.
When removing individual samples or the rack, please note that the vacuum chamber wall,
temperature sensor, rack and individual sample vials / tubes may pose risks of burns.
During the evaporation of volatile solvents, the compartment heater should not be used due to
safety reasons; this is because the mixture of gas and air may ignite. Please consult the data
sheet of the pertinent solvent for advice.
3.0.3
IR-Lamp
The IR lamp switch, respectively Heater (Fig. 5 no. 6), switches the infrared lamp in the cover, which heats the
samples from above, on and off. The target value is set and displayed on the temperature controller (Fig. 5 no. 7),
as described in chapter 3.0.6.
3.0.4
Shaking motor
The shaking motor switch, respectively Shaker (Fig. 5 no. 8) is used to switch the orbital shaking drive (vortex) on
and off in conjunction with the turning knob. See chapter 3.5 (shaking speed).
