Qi-Series Operating Manual
25
C6027205
Technical information
The need to degas
In order to allow optimum ultrasonic activity, the gases present in ordinary
tap water need to be driven out of the cleaning solution.
The time needed to degas the liquid varies depending on the amount of gas
present in the liquid and the quantity of water in the tank. Ultrawave
recommend a degas period of at least 10 minutes without a basket or load.
During the degas cycle, you will see bubbles of gas forming on the inside of
the bath, and slowly rising to the surface. Degassing is complete when you
can no longer see these bubbles.
Another indication of increased “cold-boiling” at the liquid surface indicates
that the liquid is degassed.
Once the liquid is degassed, the bath is immediately useable and will run the
cleaning cycle.
The effect of heat
Heating the liquid in the bath
will aid the cleaning process.
Normally a temperature of
between
30
to
60°C
is
sufficient to accelerate the
process. You will see from the
graph below that optimum
cleaning will be obtained at
60°C
If you are using your bath to clean medical equipment, it is recommended
to limit the liquid temperature to 40°C. This will avoid the coagulation of
protein and other bio burden which can then bake onto the equipment.
Ultrasonic activity itself will heat up the liquid at a rate of approximately 10-
15°C per hour if in continuous use.
Cleaning time
The Qi-Series ultrasonic bath is factory preset with a cleaning time of 15
minutes. Some components may take longer or shorter to clean effectively
depending on the contaminants and the level of contamination.
Average power
0
20
40
60
1
5
2
5
3
5
4
5
5
5
6
5
7
5
8
5
Temp (Deg C)
P
o
w
e
r
(W
a
tt
s
/I
n
c
h
^2
)
Av Power
-3dB point
