Retsch UR 2 - Manual (Page 12)

2/8/2012 Retsch GmbH
12
0002
Operation of the ultrasonic cleaners
Target group: Operators
Switching on and off
The ON/OFF knob is located on the front of the ultrasonic cleaner.
Turn the knob to the position.
The signal lamp lights up in green.
The ultrasonic cleaner is in continuous operation and will not switch off
automatically.
Turn the knob to the 0 position.
The signal lamp goes out.
The ultrasonic cleaner is then switched off.
Setting the time
Running times of 0 - 15 mins. can be set by turning the ON/OFF
knob clockwise.
Turn the knob to the desired running time.
The signal lamp lights up in green.
On expiry of the set time, the ultrasonic cleaner switches off
automatically.
The signal lamp goes out.
The switch is once again in the 0 position.
The running time can be reduced or the ultrasonic cleaner switched off
at any time by turning the knob anti-clockwise.
Prior to cleaning operations with the ultrasonic
cleaner
In most cases, water with a 5-10% admixture of cleaning agent, e.g.
”TICKOPUR RW77” which is available as an accessory, is sufficient as
the cleaning fluid.
The cleaning fluid can be degassed in advance to achieve a higher
cleaning effect.
Degassing the cleaning fluid
Cleaning and contact fluids contain dissolved gases (e.g. oxygen).
Cleaning or contact fluid which is fresh or which has been left to stand
for some time in the vibratory trough should be ultrasonically treated
(degassed) for approx. 5 to 15 minutes without any parts to be cleaned,
or for approx. 30 minutes in vibratory troughs with over 10 l volume.
A reduction in the noise level during treatment does not indicate any
drop in ultrasonic performance, but rather the end of the degassing
process.
Cleaning duration
The cleaning duration is always to be set as short as possible. The
duration can be approx. 1 to 15 minutes, depending on the degree of
contamination and the cleaning or contact fluid used.
Also observe the data on the labels for the cleaning or contact
fluid.