Operation; Operating And Display Elements - VWR T Series Operating Instructions Manual

4.

OPERATION

The units have a digital operator interface which allows comfortable setting and operation.
Depending on the version there are different configurations available:
Configuration
Table top cleaning unit with digital control and display, ultrasonic
frequency approx. 45kHz
Table top cleaning unit with digital control and display, ultrasonic
frequency approx. 132kHz
Timer for ultrasonic operation adjustable from 1 to 99 minutes in steps
of 1 minute or continuous
Integrated heater, liquid temperature adjustable in steps of 1K up to
80degC
Ultrasonic power adjustable in nine steps from approx. 40% to 100 %
power
DEGAS-function
DEGAS-function:
For degasification of the cleaning fluid the unit can be operated in a so-called DEGAS mode. The cleaning liquid will
be also degassed during standard cleaning operation but this can be considerably speeded up in the DEGAS mode.
With degassing the cleaning result during the following cleaning process is considerably more effective and uniform.
During the DEGAS mode, the ultrasound is automatically switched on and off in short intervals. This causes the
entrapped air to form into larger bubbles during the acoustic irradiation of the fluid. The bubbles can then rise freely to
the surface in the pauses between the acoustic irradiation.
4.1.

Operating and display elements

Button 'Sonic / Ultraschall / Ultrasons'
With this button you can switch on and off the ultrasonic operation. The operating status 'Ultrasonic ON' is indicated
by the green light-emitting diode (LED) in this button.
Button 'Heater / Heizung / Chauffage' (TH, THD and THD/HF types only)
With this button you can switch on and off the liquid heater. The operating status 'Heating ON' is indicated by the
green LED in this button.
Button 'Degas / Dégazage' (THD and THD/HF types only)
With this button you can switch on and off the DEGAS mode (see description below). The operating status is
indicated by the green LED in this button.
Button Taste 'Select / Auswahl / Choix'
With this button the following operating parameters can be selected and set (time, temperature, power):
0160.8131 / 141219
Operation
Series
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THD/HF
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