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Maintenance
/6
Procedure
1. Hold down the start/stop button and press the on/off button.
» All LEDs light up briefly one after the other. Then all LEDs light up at the
same time.
2. Press the start/stop button twice.
» The sonication time that was set last is then displayed again on the time
scale. The "0" LED lights up on the temperature scale.
» The ultrasonic bath is ready for operation again.
Check the output of the ultrasound.
The output can be checked with a wattmeter between the ultrasonic bath mains
plug and the socket.
Procedure
1. Fill the ultrasonic oscillating tank with water.
2. Switch the ultrasound on and off again. Read the output.
3. Compare the readings with the technical data. See chapter
8 Technical data
.
The measured values may deviate by a maximum of ± 20% from the values in the
technical data.
Checking ultrasonic effect
Check the effect of the ultrasound upon commissioning and at regular intervals.
We recommend a check every 3 months. See chapter
6.3 Performing the foil test
.
6.3 Performing the foil test
A foil test should be performed before the first use and at regular intervals, e.g.
every 3 months. This is done to ensure the consistent effectiveness of the ultra-
sound. You are responsible for how often the test is performed.
The foil test is a simple method for determining the intensity and distribution of
the cavitation in an ultrasonic bath. This done by inserting some aluminium foil
stretched over a foil test frame. The foil is perforated or destroyed by cavitation
up to a certain degree depending on the sonication time.
To be able to compare results, it is
important that the conditions of the foil test
are always the same
:
• Ultrasonic oscillating tank is filled up to the filling level mark
• Working temperature of sonication fluid
• Degassing time
• Position of frame
• Foil type (brand, thickness)
• Sonication time
• Type and concentration of ultrasound agent
Fluid for the foil test
