Putting unit into operation
© Elma Schmidbauer GmbH
BA_ Elmasonic xtra ST 1900S_EN_Vers.04.2019
19
6.3
Degassing of cleaning liquid
Freshly mixed cleaning liquids are saturated with air which
reduces the cleaning effect of the ultrasonic activity. Operating
the ultrasound over a period of several minutes before the
cleaning process will eliminate the tiny air bubbles in the liquid.
1. Activate the ultrasound at the key
ultrasound
(
Fig. 4.11.I
).
The green LED in the key is lighted.
2. Set the required frequency to 45 kHz at the selector key
frequency
(
Fig. 4.11.G
). The green LED in the key is lighted.
3. Press the key
pulse
(
Fig. 4.11.H
). The green LED in the key
is lighted.
After approx. 5 to 10 minutes the cleaning liquid is degassed.
You can carry out the degassing during the heating process.
6.4
Setting of ultrasonic frequency
The present unit can be operated at two different ultrasonic
frequencies.
The ultrasonic frequency is set by means of the selector key
frequency
. (
Fig. 4.11.G.
). The following two frequencies are
available:
For the removal of coarse and tenacious contaminations, and
for the pre-cleaning of robust surfaces.
For the fine cleaning, and for the removal of contaminations
from sensitive surfaces.
The frequency can be changed during operation.
How to proceed
25 kHz
45 kHz
