BANDELIN Sonorex Digiplus DL 102 H User manual

3 L
Ultrasonic baths for aqueous fluids
Instructions for Use
Valid for:
DL 102 H, DL 156 BH, DL 255 H,
DL 510 H, DL 512 H, DL 514 BH, DL 1028 H
1586d GB/2019-02

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Copyright & limitation of liability
This document may not be reproduced, either in full or in extracts, without prior approval of BANDELIN electronic GmbH & Co. KG,
hereinafter referred to as BANDELIN.
The German original is the binding version of this document. Any differences in the translation are not binding and have no legal
effect. In case of any discrepancies between the translation and the original of this document, the original version has priority.
BANDELIN accepts no responsibility or liability for damages caused by improper handling or usage contrary to the intended
purpose.
The documentation was prepared with great care. Liability for indirect or direct damages arising because of incomplete or
erroneous information in this documentation, as well as in its delivery and usage, is excluded.
All images are provided as examples and are not true to size. Decorative elements are not included in the scope of delivery.
© 2019
1 2 GmbH & Co. KG, Heinrichstraße 3–4, Germany, 12207 Berlin,
Tel.: [phone] - 0, Fax: [phone], [email protected]

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General
The equipment, the accessories and the preparations are to be used in accordance with the
operating instructions and/or the product information.
The instructions are part of the scope of delivery and are to be stored in the vicinity of the device
for later reference. This also applies if possession of the device is transferred elsewhere.
Before the device is put into operation, these Instructions for Use are to be read carefully and
completely in order for the user to become familiarised with all functions.
The warnings and safety precautions (Section 1.5) are always to be heeded during use.
The manufacturer will not assume any responsibility for the device's safety or functional ability
in the event of improper handling or usage contrary to the intended purpose. In the event of
unauthorised alterations/modifications, both the warranty claim and the CE conformity will expire.
If Service is required, please contact the specialist dealer in charge or the manufacturer.
Symbols used:
Symbol Significance Explanation
Danger Identifies information that could signify a risk to life and limb,
especially through electric shock, if not observed.
Caution
Identifies information that is to be observed and adhered to
without fail, to prevent damage to the device and danger to
the user.
When device parts are labelled with this symbol, reference
must be made to the documentation.
Warning Warning of hot surface.
Important Identifies information that is important for execution.
Note Identifies information provided for explanatory purposes.
Do not grip inside For health reasons, touching the oscillating fluid is prohibited.
Wear ear protectors For health reasons, standing for long periods of time in the
vicinity of the device without ear protectors is prohibited.
Operating sequence
instructions
Identifies instructions that are to be followed in the described
sequence.

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Contents
1 Product description .........................................................................................................6
1.1 Mode of operation ..........................................................................................................6
1.2 Purpose ..........................................................................................................................7
1.3 CE conformity .................................................................................................................7
1.4 Technical data ................................................................................................................8
1.4.1 Electromagnetic ambient conditions (EMC) ...................................................................9
1.5 Warnings and safety precautions ................................................................................. 10
2 Preparation ................................................................................................................... 11
2.1 Scope of delivery .......................................................................................................... 11
2.2 Set-up / assembly ......................................................................................................... 11
2.3 Start-up ......................................................................................................................... 11
3 Operation ......................................................................................................................12
3.1 Operating elements ......................................................................................................12
3.1.1 Ultrasound ....................................................................................................................12
3.1.2 Power ...........................................................................................................................13
3.1.3 Heating .........................................................................................................................13
3.2 Special functions ..........................................................................................................14
4 Use ...............................................................................................................................15
4.1 Instructions for use .......................................................................................................15
4.2 General use ..................................................................................................................17
4.3 Further information .......................................................................................................20
4.3.1 Degassing ....................................................................................................................20
4.3.2 Disposal of sonication fluids .........................................................................................20

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5 Cleaning and maintenance of the ultrasonic bath ........................................................21
5.1 Cleaning and care ........................................................................................................21
5.2 Warehousing / storing ................................................................................................... 21
6 Maintenance and repair ................................................................................................22
6.1 Maintenance .................................................................................................................22
6.2 Functional checks .........................................................................................................22
6.3 Error analysis ...............................................................................................................22
6.4 Repairs and service ......................................................................................................23
7 Accessories ..................................................................................................................24
7.1 Required accessories ...................................................................................................24
7.2 Preparations .................................................................................................................24
8 Taking the unit out of service ........................................................................................25
Informative appendices
A Dosing table
B Accessories
C Foil test

SONOREX DIGIPLUS DL 102 H
15
4
6
8
9
2
3
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1 Product description
Ultrasonic bath of type SONOREX DIGIPLUS DL... .
The exact type specification and serial number are found on the type plate, on the rear side of the
ultrasonic bath.
Product features:
• Stainless steel oscillating tank (1) with transducers, ultrasound frequency 35 kHz
• Digital timer for 1, 2, 3, 4, 5, 10, 15, 30 min and continuous operation (2)
• Digital power setting from 20% to 100% in 10% increments (3).
• Digital heating setting from 20°C to 80°C in 5°C increments (4).
• Filling level mark for safe filling (5)
• Compact, easy-to-clean stainless steel housing (6)
• Rubber feet for safe positioning (7)
• Outlet with ball valve (8) for easy draining of the bath fluid and handles (9)
1.1 Mode of operation
SONOREX ultrasonic baths use the effect of cavitation. Under their oscillating tank bottoms
they contain piezoelectric transducers, the energy of which is transferred to the bath liquid with
ultrasound frequency as mechanical oscillations. As a result, microscopically small bubbles
are continuously formed in the bath liquid, which release energy upon imploding and generate
local microcurrents. This process is called cavitation. During the cleaning process, it causes
contamination to be regularly "blasted" from the hard surfaces of the objects being treated. At
the same time, dirt particles are removed and fresh bath liquid flows in. During sonochemical
processes, cavitation may have a catalytic effect, e.g. with the production of stable emulsions or
the rapid degasification of fluids with a high gas content.
SONOREX ultrasonic baths are efficiently supported by SweepTec®automatic frequency control.
SweepTec®immediately balances load-dependent working point fluctuations to the optimal
working point using fast frequency modulation. This produces an especially homogeneous and
uniform ultrasound field in the bath for constantly reproducible results.

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1.2 Purpose
General use
SONOREX ultrasonic baths are intended for the sonication of aqueous fluids. They work on the
basis of low-frequency ultrasound and can be used in versatile ways. Their main application is
gentle and intensive cleaning of objects of diverse shapes, types and sizes. Alternatively, chemical
processes can be favourably supported and accelerated in an ultrasonic bath, e.g. when preparing
or treating samples.
Sonication is always carried out in connection with a suitable preparation that is added to the bath
liquid. In order to use the device as intended, a basket or another inset beaker, into which objects
are placed during sonication, is also required. Only in this manner is the optimum diffusion of the
ultrasound guaranteed.
The ultrasonic bath is operated from the front. The operation is usually carried out on a table.
1.3 CE conformity
The SONOREX ultrasonic baths fulfil the CE marking criteria of the European Directives.
- "Low-voltage directive"
- "Electromagnetic compatibility" directive
- WEEE – Directive
in their currently valid versions.
A declaration of conformity can be requested from the manufacturer by providing the serial
number.

Protected against access by
instruments to dangerous
components,
protected against solid
foreign bodies with a
diameter of 2.5 mm or larger
Protected from splashes
up to 60° from its vertical
axis
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1.4 Technical data
SONOREX ultrasonic baths are interference-suppressed and CE marked.
Safety: EN 61010-1,
EMC: EN 61326-1
Mains supply: 230 V~ (± 10%) 50/60 Hz, (115 V upon request),
mains cable length 2 m
Protection class: Class I
Frequency 35 kHz
Oscillating tank: Stainless steel
Serial number (SN): See type plate
Degree of protection: IP 33 according to DIN 60529
/* In order to improve the effect, the ultrasound is modulated, whereby a 4-fold utrasonic nominal output value is obtained as
ultrasonic peak power, in connection with SweepTec.
Environmental conditions pursuant to EN 61 010-1
Overvoltage category: II
Degree of contamination: 2
Permissible ambient temperature: 5 to 40°C
Permissible relative humidity up to 31°C: 80%
Permissible relative humidity up to 40°C: 50%
No condensation allowed.
Only for indoor operation.
Bath type Order
No.
Interior dimensions
(L × W × D)
Operat-
ing
volume
Outlet
(valve)
Ultrasonic peak
power/* / Ultra-
sonic nominal
output
Weight
(net)
Heating
capacity
Current
consump-
tion
(230 V)
Current
consump-
tion
(115 V)
mm l W / Weff kg W A A
DL 102 H 7180 240 × 140 × 100 2.0 G ¼ 480 / 120 4.3 140 1.2 2.3
DL 156 BH 7181 500 × 140 × 150 6.0 G ¼ 860 / 215 7.3 600 3.6 7.1
DL 255 H 7182 300 × 150 × 150 3.8 G ¼ 640 / 160 5.3 280 2.0 3.9
DL 510 H 7183 300 × 240 × 150 6.6 G ½ 640 / 160 7.6 400 2.5 4.9
DL 512 H 7184 300 × 240 × 200 8.7 G ½ 860 / 215 8.0 400 2.7 5.4
DL 514 BH 7185 325 × 300 × 200 12.5 G ½ 860 / 215 9.8 600 3.6 7.1
DL 1028 H 7186 500 × 300 × 200 19.0 G ½ 1200 / 300 14.7 1300 7.0 14.0

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1.4.1 Electromagnetic ambient conditions (EMC)
The device was tested to DIN EN 61326-1 for electromagnetic compatibility (EMC) and complies
with the requirements for class B devices according to EN 55011.
It is suitable for use in facilities and areas which are directly connected to a public low-voltage
supply network, e.g. medical laboratory facilities.

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1.5 Warnings and safety precautions
General
• Keep the ultrasonic bath out of the reach of children and persons who have not been instructed
in its operation by reference to these instructions.
• We will not offer a guarantee for damages to the ultrasonic bath or oscillating tank, or to the
objects to be treated, as a result of use of inadequate disinfection agents or detergents.
• Keep the surface of the ultrasonic bath and operating elements clean and dry.
• Do not expose the ultrasonic bath to corroding influences.
• Move the ultrasonic bath only when it is empty.
• Empty the ultrasonic bath only while turned off.
• Ultrasonic baths adhere to prescribed EMC limit values, such that it can be assumed that the
electromagnetic radiation emanating from the units is harmless to humans. A binding statement
for wearers of implants can only be made at the place of work and together with the implant
manufacturer. In case of doubt, information regarding the allowable electromagnetic exposure
level is to be obtained from the implant manufacturer.
Operation
• Observe ambient and set-up conditions, see Section 1.4.
• Only plug in the ultrasonic bath to an outlet with a grounded socket.
• Do not operate the ultrasonic bath without fluids.
• Do not stand or lay any objects on the tank bottom, accessories must be used, see Section 7.
• Do not immerse any parts of the body (e.g. hands, feet) or living beings (animals or plants) into
the tank; in particular, do not immerse them in the ultrasonic fluid during ultrasound operation.
Danger: Ultrasound has a cell-destroying effect.
• In the event of continuous activity within a 2 m radius, adequate hearing protection must be
worn. Danger: Hearing disturbances during operation when not wearing hearing protection - the
typical ultrasound cavitation noise can be very uncomfortable.
• When preheating the bath liquid, stir at least every 15 min. or switch on the ultrasound. Danger:
Scalding due to delayed boiling.
• Do not leave the ultrasonic bath unattended while in operation.
Damage
• If damage to the ultrasonic bath is detected, do not connect the ultrasonic bath to the mains.
• In the event of defects, disconnect the mains plug immediately.
• Repairs are only to be conducted by authorised skilled personnel or by the manufacturer.
• Defective parts may only be replaced with original SONOREX parts.

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2 Preparation
Carefully unpack the ultrasonic bath and accessories and inspect them for completeness
or possible transportation damages. If any damages or defects are found, these are to be
immediately notified in writing to the transportation company and to the supplier.
Before startup, the ultrasonic bath is to be left to stand at its operating location for 2 hours so that
it may adapt to the ambient conditions.
2.1 Scope of delivery
1 Ultrasonic bath – see delivery note
1 Ball valve (brass, galvanized) with hose, packaged separately with sealing tape and assembly
instructions
1 Instruction manual
Additional accessories according to order – see delivery note
2.2 Set-up / assembly
• Place the ultrasonic bath atop a firm, level and dry surface. In doing so,
- observe the maximum weight of the ultrasonic bath, including fluid.
For net weight, see technical data, Section 1.4.
- do not block the air supply below the ultrasonic bath.
- guard against moisture and wetness - risk of electric shock.
• Mount the ball valve, hose socket and hose, which are included in the delivery, pursuant to the
enclosed assembly instructions.
2.3 Start-up
Thoroughly rinse the ultrasonic bath's oscillating tank with water before its first use.
Connect the ultrasonic bath up to the power supply (grounded socket).
Conduct function test - switch on ultrasonic bath, briefly switch on and turn off the ultrasound
(maximum of 1 to 2 seconds), a hissing noise should be heard. Then switch the device off
again.
It is recommended that a foil test be conducted as part of quality assurance prior to the first
use.
This test is to be saved for later comparison, see appendix for information.
If applicable, hang accessories in the ultrasonic bath and place lid on top.

1 Ultrasonic bath ON/OFF button
2 Temperature setting button with temperature
scale above
3 Power setting button with output scale above
4 Time setting button with time scale above
5 Start/Stop button – Ultrasound
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3 Operation
3.1 Operating elements
The ultrasound, the power and the heating system are operated from the front:
3.1.1 Ultrasound
With the ultrasonic bath turned on – ON/OFF button – the ultrasound output
is turned on with the Start/Stop button after the time is set.
Timed operation:
• Setting via pressing buttons
Time 1, 2, 3, 4, 5, 10, 15 or 30 minutes
- Following pressing of the Start/Stop button, a running light displays the
remaining time optically.
- Once the time expires, the ultrasonic output is stopped automatically.
• Premature pressing of the Start/Stop button ends the ultrasound output.
Continuous operation:
•Setting via pressing buttons
LED lights up
- Following pressing of the Start/Stop button, the top (green) LED lights up
constantly.
- The ultrasonic bath does not turn off automatically:
press the Start/Stop button to switch it off.
Notes
• For safety reasons, the ultrasound bath is turned off automatically if no button is pressed for
more than 12 hours.
• While turned off, the ultrasonic bath may remain connected to the mains.
It can be disconnected from the mains by pulling the mains plug.

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3.1.2 Power
The power is controlled by the power setting button.
When the ultrasonic bath is switched on, the LED "100" lights up.
• Set the required power by pressing the buttons
Power range 20-100%
- The set power goes up or down with every button pressed
For example.: Power is set to 100%
Next button presses = 90 - 80 - 70 - 60...
When the 20% setting is reached, the scale starts rising again
30 - 20 - 30 - 40 - 50... (in other words: up, down, up...)
Notes:
• The last selected power setting is saved when the unit is switched off and used again
when it is switched back on again.
• The power should be set to 100% for foil tests and degassing the bath fluid.
3.1.3 Heating
The heating is controlled by the temperature setting button.
When the ultrasonic bath is switched on for the first time, the green LED "0" lights up.
• Set the required temperature by pressing the buttons
Temperature range 20-80°C.
- Set temperature = yellow illuminated LED.
- Actual temperature = yellow flashing LED.
It flashes
slowly above the set temperature (= heating is off) and
rapidly (= heating is on) above it.
- Once the set temperature is reached, only
the corresponding LED lights up.
The LED "!" flashes red if the temperature
exceeds 80 °C.
- Switching off the heating manually:
Keep the temperature setting button depressed for more than 2 seconds.
The green LED "0" lights up.
Notes:
• The heating system works independently from the ultrasound.
• The last selected temperature is not saved.
Once the ultrasonic bath is switched off (ON/OFF), the temperature "0" is set.
• The heating will automatically turn on every time that the bath temperature drops below the set
temperature.
• The temperature scale display is accurate to ± 2.5 °C.
The red LED is triggered at around 80 °C + 5K.
• The heat automatically switches off to protect the ultrasonic bath from overheating.
The ultrasonic bath will need to cool down sufficiently (water temperature around 50 °C) and be
disconnected from the mains power briefly before it can be used again.

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Avoid retardation of boiling:
If a temperature is set, the ultrasonic bath attempts to reach the selected temperature immediately.
When heating (without the ultrasound switched on), the ultrasound is automatically switched on for
3 seconds per minute to agitate the liquid and consequently avoid retardation of boiling.
- This function is always active at temperatures > 60 °C and cannot be switched off!
- The function can be switched off for temperatures < 60 °C. It must be reactivated again
every time the unit is switched on. Activating the function:
By pressing the temperature setting button when you switch the unit on (ON/OFF).
3.2 Special functions
Degas ( – in the time scale area)
• The DEGAS function is used to degas the unit before the treatment. The required time can be
set with the time setting button if desired. Then keep the Start/Stop button depressed for at least
2 seconds.
The system can be stopped prematurely by pressing the Start/Stop button.
During the degassing, the top green LED ( ) also flashes until the time expires.
• Switching between ultrasound – degas: If the Start/Stop button is kept depressed for a long
time when ultrasound is running, the ultrasound is firstly switched off and then after approx.
2 seconds the Degas function is reactivated.
Locking continuous operation ( – in the time scale range)
To avoid accidentally turning on the continuous operation, the continuous operation can be
deactivated:
Pull the power plug out.
Press the time setting button, hold it depressed and insert the mains plug at the same time.
The yellow LED "1 min" lights up in confirmation.
The function can be reactivated in the same way. The green LED continuous operation ( ) lights
up in confirmation.

Sonication fluid
Insert basket
Contact
fluid
Sonication fluid
Inset beaker
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4 Use
Direct sonication
Normally, sonication takes place directly in the oscillating tank. For this
purpose, the objects to be treated are placed in a basket and hung inside the
oscillating tank which is filled with sonication fluid.
Indirect sonication
Indirect sonication in inset beakers is to be conducted for special applications
or to protect the stainless steel oscillating tank in the case of:
- Sonication of sample fluids.
- Use of chemically aggressive fluids (e.g. using acids as cleaning agents).
- Removal of chemically aggressive soiling (e.g. cleaning of developing
machine racks).
- Removal of abrasive contamination (e.g. polishing pastes, quartz, sand).
For indirect sonication, a contact liquid (water + surfactants) must be filled in
between the inset beaker and the oscillating tank.
4.1 Instructions for use
Instructions – filling
• Verify that the ball valve is closed.
• Ultrasound and heating must be turned off.
• Do not fill oscillating tank with hot water. Maximum filling temperature: 50°C.
• Water of at least drinking quality must be used to fill the oscillating tank.
• Water without additives is not suited for sonication. BANDELIN recommends the TICKOPUR or
STAMMOPUR preparations.
• Only use distilled or deionised water without additives in inset beakers or insert tubs.
• The fill level must always be at or slightly above the filling level mark.
A low fill level will damage the ultrasonic bath!
• Do not use any combustible, explosive, non-aqueous liquids or azeotropic mixtures directly in
the stainless steel oscillating tank (e.g. benzine, solvents). Furthermore, chemicals that contain
or that separate chloride ions (some disinfectants, household cleaners, and dish detergents),
may not be used directly in the stainless steel tank.
• When working with aggressive preparations in inset beakers or insert tubs: Prevent the contact
liquid or stainless steel surfaces from being sprayed. If necessary, replace the contact liquid,
clean the surfaces and wipe dry.
• When using strongly acidic preparations, the hard chromium plating of the ball valve may
become corroded and the ball valve start to leak.
If the use of a strongly acidic cleaning agent cannot be avoided, the use of a stainless steel ball
valve is recommended.
• When using preparations, the safety instructions included in the product leaflets are to be
fundamentally adhered to.
• Replace used sonication fluids, do not refresh by adding fluids.

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Notes - Inserting objects
• Fully remove air bubbles from cavities (e.g. blind holes).
Indirect sonication
Remove any air bubbles from underneath the
vessels.
Notes - Temperature and heating
• Warmed-up fluids intensify the ultrasound effect. Experience has shown that the best results are
obtained with a bath temperature of 50 to 60 °C. With high temperatures, however, the effect of
the ultrasound cavitation decreases again /1.
• In order to save time during use, the bath fluid may be preheated during degassing.
• Ultrasound energy warms up the sonication fluid (even without additional heating).
- In case of continuous sonication and/or covering the oscillating tank, the fluid temperature
will increase, even rising above the value set on the thermostat. For this reason, check the
temperature when treating temperature-sensitive components.
- Non-aqueous fluids can heat up many times faster than water. A possible flashpoint can be
reached and/or exceeded after a very short sonication time. In the case of high-boiling liquids
(with and without a flashpoint), the bath temperature can increase to >120 °C due to the
energy input of the ultrasound. This leads to irreparable damage to the ultrasonic bath.
• For an optimum bath temperature, observe the specifications of the specimen manufacturer!
• To protect the electronic components inside the ultrasonic bath, the ultrasound output is
reduced upon reaching a critical temperature in order to inhibit a further increase in the interior
temperature.
• The fluid in the oscillating tank must not exceed a maximum operating temperature of 100°C.
/1 MILLNER, R.: Wissenspeicher Ultraschalltechnik, Fachbuchverlag publishing house, Leipzig 1987

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4.2 General use
Step 1: Fill oscillating tank
The oscillating tank is filled with water and a suitable preparation to reduce the surface tension,
see Section 7.2.
Direct sonication
Fill 1/3 of oscillating tank with water.
Add dosed preparation to the oscillating tank.
See appendix for dosage information.
Fill carefully up to the filling level mark, avoid as
much as possible the formation of foam.
Indirect sonication
When using aggressive acidic liquids (e.g., sulfuric acid, hydrochloric acid), we recommend using
alkaline contact liquid such as 5% TICKOPUR R 33.
Fill 1/3 of oscillating tank with water.
Surfactant.
Fill carefully, avoid as much as possible the
formation of foam.
The oscillating tank must be filled depending on
the inset beaker since inset beakers displace the contact liquid.
Step 2: Degassing the fluid
Freshly-filled bath fluid or fluid that has remained in the oscillating tank for a longer period of time
must be degassed prior to use. See also Section 4.3.1.
Remove basket and other accessories from the oscillating tank.
Place lid on top.
Set the power to 100%, see Section 3.1.2.
For degassing, set the time and start the ultrasound (Press START/STOP button for 2 sec),
see Sections 3.1.1 and 3.2.
- up to 10 litres bath volume: 10 min
- more than 10 litres bath volume: 30 min
Turn on the ultrasonic bath.
Time need to be extended with acidic cleaning solutions.
Step 3: Preheat fluid
In ultrasonic baths with built-in heating, the fluid may be preheated independently of the
ultrasound. This increases the ultrasound effect, especially when removing fats, oils and polishing
paste residue, and shortens the duration of the subsequent ultrasound.
Remove basket and other accessories from the oscillating tank.
Place lid on top.
Set the desired temperature, see Section 3.1.3. The ultrasonic bath begins heating
immediately.
For an even warming of fluids, stir the fluids or switch on the ultrasound for a few minutes now
and then, otherwise there will be delayed boiling - risk of scalding!

2/3
Oscillating tank with
inset basket
2/3
≥2cm
Oscillating tank with
positioning lid and inset
beakers
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Step 4: Insert objects to be treated
Before every sonication it is necessary to check whether the sonication fluid needs to be cleaned
or replaced.
Direct sonication
Hang the insert basket with the goods to be treated, or place the basket
holder in the oscillating tank. Place the inset basket on the basket holder.
Check that the objects to be treated are fully covered with fluid.
With every object inserted, the fill level is to be controlled.
Indirect sonication
Place the positioning lid atop the oscillating tank and hang the inset
beakers from the positioning lid, or hang the insert tub directly in the
oscillating tank.
Immersion depth for inset beakers is min. 2 cm.
Control the fill level (contact liquid).
For cleaning tasks
Place the objects to be cleaned in the appropriate accessories, in doing so please note:
• Evenly distribute parts, do not stack them.
• An overloading of the basket or inset beaker reduces the ultrasound effect (the ultrasound is
absorbed).
• Place the more heavily soiled side facing downward.
• Parts with joints are to be fully opened before placing inside.
• Delicate parts are not to come into contact with one another - for positioning, use special
accessories such as silicone knob mats if necessary, see Section 7.
• Due to the design, the ultrasound effect is weaker on the outlet side. Heavily contaminated
objects should not be placed in the basket over the outlet.
For indirect sonication of fluids
Fill sample vessel(s), in doing so please note:
• It is possible to treat multiple sample vessels with different fluids at the same time.
• When treating small quantities of combustible fluids in sample vessels, the country-specific
guidelines/regulations that are currently in effect are to be observed.
Step 5: Ultrasound - Operation
Fundamentally, the sonication time is to be as short as possible in order to protect the objects to
be treated and the oscillating tank.
In the case of stubborn residue, conduct sonication for a longer time if necessary.
Place lid on top.
Set the power accordingly as necessary, see Section 3.1.2.
Set the required sonication period and start the ultrasound, see Section 3.1.1.

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Step 6: Removing treated objects
After sonication, the objects are to be removed from the ultrasonic bath. Allowing them to remain
any longer in the bath fluid may damage them.
Switch off the ultrasound.
Remove the basket or inset beaker from the tank and set down atop a level surface.
Caution
Depending upon the set temperature or the duration of sonication, the baskets and objects
may be hot!
After the cleaning processes, rinse the treated objects with water of at least drinking quality.
Visually review the sonication results.
Before the next sonication, verify the service life (see Section 4.3.2) of the bath fluid. Heed the
specifications of the preparation manufacturer. If necessary, empty the oscillating tank.
Step 7: Empty the oscillating tank.
Layers of contamination on the tank bottom reduce the ultrasonic output.
The oscillating tank is to be emptied after a long period of use or sonication of heavily soiled
objects, see Section 4.3.2.
Switching off the ultrasonic bath (ON/OFF button).
Pull the power plug.
Do not place the ultrasonic bath in the sink.
Empty the oscillating tank by setting the ball valve handle in the
discharge direction.
After emptying the oscillating tank, thoroughly rinse it. Then dry with a
soft cloth.
For further care instructions, see Section 5.

20 / 36 1586d GB/2019-02
1electronic GmbH & Co. KG • Heinrichstraße 3-4 • 12207 Berlin • Deutschland • [email protected]
4.3 Further information
4.3.1 Degassing
Degassing the sonication fluid increases the ultrasound effect.
Freshly filled-in fluid or fluid that has remained in the oscillating tank for a longer period of time
must be degassed prior to use. Gases released in the fluid (e.g. oxygen) are reduced through
degassing and the ultrasound effect is thus significantly improved.
The cavitation noise changes during degassing, loud degassing noises disappear at the end of the
degassing process, the ultrasonic bath appears to work more quietly.
A lower noise level, however, does not mean a reduction in ultrasonic power. It rather means the
end of the degassing process and an improvement in the ultrasound effect.
4.3.2 Disposal of sonication fluids
The working solution is disposed of pursuant to the specifications in the product leaflet and the
label supplied by the manufacturer of the preparations employed. All aqueous preparations made
by DR H. STAMM GmbH are prepared pursuant to the regulations of the German Washing and
Cleansing Agents Act, are biodegradable and as working solutions may be disposed of in the
wastewater. Strongly acidic and strongly alkaline fluids are to be previously neutralised pursuant
to technical data sheet specifications. The manufacturer’s specifications for the respective
preparations should be observed.
During cleaning, materials hazardous to water such as oils, heavy metal compounds, etc.,
depending on the type of contamination, may enter the working solution. If the limit values are
exceeded, the working solution must be reconditioned (removal of contaminants) or be disposed
of as toxic waste.
Disinfection and cleaning agents that become contaminated when used are considered
“waste material” pursuant to the German Waste Act (AbfG) and may not be taken back by the
manufacturer. In other countries, the relevant supplementary/divergent national regulations should
be taken into account.
In every case, the statutory provisions and regulations of municipal wastewater plants must be
adhered to. Information is provided by municipal wastewater plants as well as by environmental
agencies.