a.) Switch On/Off
You switch on the ultrasonic unit by setting the timer or turning the timer
knob to the infinity position.
The green lamp (not available on all units) indicates the operation of the
unit.
b) Setting of the timer
For cleaning periods of up to 15 minutes use the timer with automatic
switch-off. The required cleaning period is set by turning the knob. After the
set period the ultrasound is switched off automatically. If you need to switch
off the unit before the set period is over turn the timer knob back to the OFF
position.
Permanent Operation
If you require a cleaning period longer than 15 minutes turn the knob to the
infinity position. In this operation mode the unit has to be switched off by
hand.
c.) Power regulation
The ultrasonic power is variable from 10 to 100% and is regulated by knob (2).
Turning the knob clockwise increases the power. The power is automatically
kept at the set level.
d.) Operation modes
You can choose between the operation modes sweep, standard and degas by
means of knob (3).
Sweep
: The frequency varies permanently within a defined range. This shifts
the minima and maxima of the sound field within the bath. It also allows a more
even load of the ultrasound transformer. The cleaning effect is more
homogeneously distributed in the bath than during standard operation.
Standard
: The frequency is regulated against the mechanical resonance of the
ultrasound transformer. This optimises the performance in the distributed
maxima.
Degas
:
The set power is interrupted for a short period so that the bubbles are
not retained by the ultrasonic forces. The degassing effect is stronger with high
ultrasonic frequencies than with lower frequencies due to the directional
diffusion. We recommend this operation mode particularly for newly filled baths.
The operation modes can be changed during operation.
e.) Setting of frequency
On multi-frequency units you can choose between a low and a high ultrasonic
frequency by means of knob (4). When the knob is in neutral position 0, the
ultrasonic activity is switched off. The frequency can be changed during
operation.
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