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1566g GB/2019-02
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electronic GmbH & Co. KG • Heinrichstraße 3-4 • 12207 Berlin • Deutschland • [email protected]
6
Maintenance and repair
6.1 Maintenance
SONOREX ultrasonic baths require no maintenance.
For purposes of regular control, the following functional checks may be carried out.
6.2
Functional checks
Checking control lights
A test routine can be started in order to carry out an internal function test:
For this, the ultrasonic bath must be switched off. With the key Start/Stop pressed switch on the
unit with the key ON/OFF.
One after the other, all LEDs will light up for one third second. Afterwards, the last selected values
will reappear.
With this, the test has been completed successfully.
In case of deviations, the unit has to be sent in for inspection/repair.
Checking the ultrasound and/or heating
Function can be checked using a standard wattmeter. It is to be inserted between the ultrasonic
bath's power plug and the power outlet.
• Fill the oscillating tank with
fl
uid, see chapter 4.2.
• For testing purposes, only the ultrasound or only the heating system are to be plugged in.
Next, the value displayed is to be compared with the corresponding value in the technical data
(chapter 1.4) (tolerances ± 20 %).
Checking the ultrasound effect
• For this check, it is recommended that a foil test be conducted.
A suitable frame for a foil test can be requested from the manufacturer. Customary aluminium
foil is used to conduct the test. Next, a comparison is made with previously-generated foils.
For more detailed information, please see the appendix.
• A measurement procedure is described in DIN SPEC 40170:2013-11 (Measurement and
evaluation of cavitation noise).
6.3
Error analysis
SONOREX ultrasonic baths are robustly constructed and designed for a high level of reliability.
Nevertheless, the possibility of a malfunction due to a defective component can never be fully
discounted.
The following overview of possible sources of error should serve as an aid for error detection and
elimination.
Ultrasonic bath oscillates weakly, unevenly, or noise is too loud:
- Has
fl
uid been properly degassed?
- Is it overloaded with objects to be treated?
- Uneven noises (wobbling)
Sonicate for 15 min.
Remove a few parts.
No error - slightly adjust the
fi
lling
level of the
fl
uid.
Heating system defective?
The ultrasonic bath can be readily operated
without heating.
Emergence of light erosion on the bottom of the
tank?
Natural wear.
Ultrasonic bath OK.
Any malfunctions are to be communicated in writing to the manufacturer.
