Start; Degassing; Cleaning - Bandelin SONOREX DIGITEC Mode D'emploi

Principle of ultrasonic cleaning
PZT oscillators underneath the tank convert electrical energy into mechanical vibrations.
SONOREX units produce oscillations of 35 kHz in the cleaning liquid. Tiniest vacuum bubbles are
formed which then implode (cavitation). This cavitation principle removes dirt and grease from the
deepest pores - "electronic scrubbing" - at all points that come into contact with the cleaning liquid.
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Start

- Make sure that the outlet of the unit – either ball cock or closing cap (DT 100 SH) - is closed!
- Fill the oscillating tank up to the fi lling mark.
- Connect the unit to a grounded socket.
2.1

Degassing

Degassing the cleaning liquid enhances the cleaning effect - see also lead for DEGAS function
under chapter 2.5.
Cleaning and contact liquids contain dissolved gases (for example, oxygen). Sonicate cleaning
and contact liquid, which have just been poured into the oscillating tank or have been left in it for
a longer period of time, for approx. 5 to 15 minutes before starting the cleaning process. Degas
oscillating tanks with a volume of more than 10 l for roughly 30 minutes. During the degassing
process the cavitation noise changes. As the loud degassing noise decreases towards the end
of the process, the unit appears to run more quietly. Lower noise levels indicate the end of the
degassing process and an improved cleaning impact. They do not mean a reduction of ultrasonic
energy.
2.2

Cleaning

• Be sure that the objects in the tank are completely covered with liquid.
• Normally the objects may be cleaned directly in the ultrasonic tank with an insert basket.
• In the following cases clean objects indirectly in inset beakers or non-perforated insert tanks to
protect the stainless steel oscillating tank:
- when chemically aggressive cleaning liquids (for example acids, etc.) are used.
- when chemically aggressive substances (for example when cleaning racks from fi lm
developing machines) or
- when abrasive substances (for example polishing paste, quartz, sand) are to be removed.
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