BANDELIN DT 31 H User manual

1686-001 en/2022-05
Operating Manual
SONOREX DIGITEC
SONOREX DIGITEC-RC
High-performance ultrasonic baths
Applies to:
DT 31, DT 31 H, DT 52, DT 52 H
DT 100, DT 100 H, DT 102 H, DT 102 H-RC, DT 103 H, DT 106
DT 156, DT 156 BH
DT 255, DT 255 H, DT 255 H-RC
DT 510, DT 510 H, DT 510 H-RC, DT 512 H
DT 514, DT 514 H, DT 514 BH, DT 514 BH-RC
DT 1028, DT 1028 H, DT 1028 CH
DT 1050 CH
Dokument: 1686-001Sprache: enVersion:2022-05

2/52 1686-001 en/2022-05
© 2022
1 2 GmbH & Co. KG, Heinrichstr. 3–4, 12207 Berlin, Germany
Phone: [phone], Fax: [phone], [email protected]om
Certified in accordance with ISO 9001 and ISO 13485

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Table of contents
Table of contents
1 About this operating manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Use of the ultrasound bath . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 To be used in the medical sector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Prevention of cross-contamination and infection . . . . . . . . . . . . . 8
2.4 Keep out of reach of children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 Danger of electric shock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.6 Harmful to health due to ultrasound noise . . . . . . . . . . . . . . . . . . . 9
2.7 Hazards due to high temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.8 Danger due to ultrasound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.9 Danger due to preparations used . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.10 Disposing of sonication fluid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.11 Erosion of the oscillating tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.12 Preventing damage to the ultrasound bath . . . . . . . . . . . . . . . . . . . 12
2.13 Disturbance of wireless communication. . . . . . . . . . . . . . . . . . . . . . 13
2.14 Safety stickers on the ultrasound bath . . . . . . . . . . . . . . . . . . . . . . . 13
3 Design and function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.4 Remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4 Preparation for operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Installation site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 Fitting ball valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3 Performing a function test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4 Rinsing out the oscillating tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table of contents
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5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1 Direct and indirect sonication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2 Sonication fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.3 Sonication time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.4 Pour in sonication fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.5 Switching sonication on and off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.6 Switching the heating on and off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.7 Avoiding retardation of boiling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.8 Degassing the sonication fluid – DEGAS . . . . . . . . . . . . . . . . . . . . . . 26
5.9 Adding goods to be treated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.10 Remove treated objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.11 Empty the oscillating tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.12 Enabling and blocking continuous operation . . . . . . . . . . . . . . . . . . 29
5.13 Troubleshooting a malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.1 Cleaning and maintaining the ultrasound bath . . . . . . . . . . . . . . . . 31
6.2 Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.3 Performing the foil test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.4 Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
7 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8 Device information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.2 Ambient conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.3 CE conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9 Dosing table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
10 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

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About this operating manual/1
1 About this operating manual
These instructions for use contain necessary and useful informa-
tion on how to operate the ultrasound bath safely and efficiently.
• Read these instructions for use before using the ultrasound
bath.
• Pay special attention to chapter 2Safety.
• If you pass this ultrasound bath on to others, please enclose
these instructions for use.
• Contact your specialist dealer or BANDELIN if any of your ques-
tions are not answered in these instructions for use. Information
on service can be found in chapter 6.4Repair.
Illustrations are provided as examples and are not to scale.

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2 Safety
2.1 Use of the ultrasound bath
The following applications are possible with the ultrasound bath:
• Ultrasonic cleaning of objects of various shapes, types and sizes,
• Homogenising, emulsifying,
• Rapid degassing of liquids,
• Sonochemical applications, e.g. for radical production or
improved material transport,
• Sample preparation for analysis.
A solution of water and a special ultrasound preparation is used as
the sonication fluid. Information on the sonication fluid can be
found in chapter 5.2Sonication fluid.
Objects to be treated may not be placed on the bottom of the oscil-
lating tank. They must be placed in the sonication fluid in an insert
basket or another suitable container. An overview of suitable
accessories can be found in chapter 10Accessories.
In the case of stains, discolouration, rust, etc., a deep cleaning can
be performed using special detergents and indirect sonication.
Do not operate the ultrasound bath while unattended.
2.2 To be used in the medical sector
The medical purpose of the ultrasound bath is to clean instruments.
Ultrasonic cleaning takes place in the context of further steps
needed for the reprocessing of medical ultrasound baths. In doing
so, observe the hygiene requirements according to the applicable
regulations. The ultrasound bath is a Class I medical ultrasound
bath pursuant to Regulation (EU) 2017/745.
EMDN nomenclature: V0799
Indications/areas of application
Medical instruments can be cleaned in the ultrasound bath as part
of manual processing, and before or after automated reprocessing.

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Safety/2
The information supplied by the instrument manufacturer specifies
whether the instruments are suited for ultrasonic cleaning.
Contraindications/exclusions
• Lenses, camera systems, light cables, mirrors, or objects made
of or containing elastic materials (e.g. catheters, respiratory sys-
tem functional parts, flexible endoscopes) are not suitable for
sonication, or are only suitable under certain conditions. The
specifications of the respective manufacturer provide informa-
tion on suitability for ultrasonic cleaning.
• The ultrasound bath is not suitable for cleaning or disinfecting
contact lenses.
• The direct sonication of flammable liquids is not permitted.
Possible side effects/restrictions
• Ultrasound does not disinfect. However, processes such as
chemical disinfection may be accelerated in the ultrasound bath.
• Cavitation erosion can cause surfaces to be mechanically cor-
roded and their coatings to dissolve.
User group
The ultrasound bath may be used by persons who have been quali-
fied and trained for their work, e.g. the reprocessing of instruments.
Pregnancy is not a contraindication for using the ultrasound bath.
Serious incidents must be reported to
BANDELIN electronic GmbH & Co. KG and to the competent author-
ities.

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2.3 Prevention of cross-contamination and infec-
tion
If the ultrasound bath is used in the medical field, regularly clean
and disinfect the surfaces of the device with a surface disinfectant
that has at least bactericidal, yeasticidal and limited virucidal prop-
erties, in order to avoid cross-contamination. Process accessories
such as holders, carriers or baskets in a cleaning and disinfection
device.
At higher temperatures, vapours and aerosols that are contami-
nated with introduced impurities may escape from the ultrasound
bath. This can lead to infections and disease. When cleaning medi-
cal instruments, avoid bath temperatures above 40 °C. If neces-
sary, use a lid, suction device or protective equipment.
2.4 Keep out of reach of children
Children cannot identify hazards posed by the ultrasound bath.
Therefore, keep the ultrasound bath out of the reach of children.
2.5 Danger of electric shock
The ultrasound bath is an electrical device. Failure to follow safety
rules can result in a life-threatening electric shock.
• Protect the ultrasound bath from moisture and wetness. Keep
the surface and controls clean and dry.
• Only transport the ultrasound bath in empty condition.
• Only drain the ultrasound bath when it is switched off.
• Do not spray or expose the ultrasound bath to splashing water.
• Always disconnect the ultrasound bath from the mains before
cleaning or maintenance.
• Only connect the ultrasound bath to a power outlet with a
grounded socket.
• If you notice a defect in the ultrasound bath, disconnect the
mains plug immediately. Do not connect a defective ultrasound
bath to the mains.

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Safety/2
• Repairs should only be carried out by the manufacturer. See
chapter 6.4Repair.
• Position the ultrasound bath so that it is easy to unplug the
mains connection at any time and without difficulty.
2.6 Harmful to health due to ultrasound noise
The ultrasound noise typical of the process can be perceived as
very unpleasant. Remaining within a radius of 2 m for an extended
period of time may cause damage to health.
• Wear suitable hearing protection.
• Use a lid to reduce noise. The ultrasound bath can also be used
in a sound proof box.

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2.7 Hazards due to high temperature
The ultrasound bath, the sonication fluid and the sonication objects
can become hot during operation. Contact with these products may
cause burns. The temperature can be set at up to 80 °C.
Ultrasound energy warms up the sonication fluid even without
additional heating. Prolonged ultrasound operation can lead to very
high temperatures. In an ultrasound bath with heating, the set
temperature can be significantly exceeded by the energy of the
ultrasound.
• Observe the treatment times recommended by the manufac-
turer of the ultrasound preparation. Do not leave the ultrasound
switched on for longer than necessary.
• Do not reach into the sonication fluid with your hand. Remove
sonication objects with the insert basket or forceps.
• Allow the sonication objects to cool before touching them.
• Lifting from the handles can cause the hands to touch the edge
of the oscillating tank, which can be very hot. After operation,
allow the ultrasound bath to cool down before lifting it for emp-
tying.
Non-aqueous fluids can heat up many times faster than water. A
possible flashpoint can be reached or exceeded after a very short
sonication time. In the case of high-boiling liquids, the bath tem-
perature can rise to over 120 °C due to the energy input of the
ultrasound. This can lead to fires and severe burns.
• Do not use combustible, explosive, non-aqueous liquids (e.g.
petrol, solvents) or mixtures with combustible liquids (e.g. alco-
holic solutions) directly in the stainless steel oscillating tank.
• Small quantities of flammable liquids in sample containers can
be sonicated indirectly. Before sonication of flammable liquids,
familiarise yourself with the necessary safety measures and
applicable regulations for handling these liquids.
2.8 Danger due to ultrasound
The strong ultrasound in the ultrasound bath destroys cell struc-
tures. If a body part is immersed in the sonication fluid during oper-
ation, this can lead not just to skin damage, but also to internal
tissue damage. On fingers, the periosteum can become damaged.

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Safety/2
• Do not touch the sonication fluid during operation.
• Never sonicate living beings.
2.9 Danger due to preparations used
Preparations used in the ultrasound bath may be toxic or corrosive.
They can irritate the eyes, skin and mucous membranes. Vapours
and aerosols can also be dangerous.
• Wear gloves and safety goggles when handling hazardous
preparations.
• Do not ingest the preparations and do not allow them to come
into contact with the eyes or skin. Do not lean over the ultra-
sound bath, in order to avoid vapours from coming into contact
with the eyes or from being inhaled.
• Place a lid on the ultrasound bath during operation. In case of
dangerous vapours, use a suction device.
• Observe the information on the label and in the safety data
sheet of the preparation.
• Keep the preparations away from children and untrained per-
sons.
2.10 Disposing of sonication fluid
Dispose of the sonication fluid according to the information pro-
vided by the manufacturer of the ultrasound agents used. The rec-
ommended ultrasound agents from the TICKOPUR, TICKOMED and
STAMMOPUR product ranges from DR. H. STAMM GmbH are bio-
degradable according to the articles of Regulation (EC) no. 648/
2004 (Detergents Regulation). If necessary, the sonication fluid
needs to be neutralised before disposal.
During cleaning, water-polluting substances, e.g. oils or heavy-
metal compounds, can contaminate the sonication fluid depending
on the type of soiling. If the limit value for these substances is
exceeded, the sonication fluid must be reprocessed or disposed of
as special waste.
Observe the local waste water regulations.

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2.11 Erosion of the oscillating tank
The surface of the oscillating tank is subject to erosion. How quickly
this erosion takes place depends on the use of the ultrasound bath.
The erosion leads to leakage in the oscillating tank. Bath liquid can
thus penetrate into the interior of the ultrasound bath. Moisture on
electrical components can cause an electric shock or fire.
• Stop using the ultrasound bath if you notice a leak. Disconnect
the mains plug immediately. Empty the oscillating tank.
You can extend the lifespan of the oscillating tank by observing the
following instructions:
• Replace sonication fluid that is visibly contaminated by particles.
• Only use demineralised water (DI water) with an ultrasound-
compatible preparation.
• Do not use chemicals that contain or release chloride ions in the
oscillating tank. This is the case with some disinfectants, house-
hold cleaners and dishwashing detergents. Chloride ions will
corrode stainless steel.
• Only use the ultrasound bath with accessories that are suitable
for the device and the objects to be treated, e.g. a basket. Do not
place any objects to be treated directly on the bottom of the
oscillating tank. An overview of suitable accessories can be
found in chapter 10Accessories.
2.12 Preventing damage to the ultrasound bath
• Only use aggressive preparations in inset beakers or insert tubs.
When working with aggressive preparations, avoid splashing in
the contact liquid or on the stainless steel surface. Immediately
replace contaminated sonication fluid. Clean surfaces and wipe
them dry.
• If strongly acidic preparations are used, the ball of the ball valve
can become corroded. The ball valve will leak. If the use of a
strongly acidic detergent cannot be avoided, use a stainless
steel ball valve.
• Do not operate the ultrasound bath without sonication fluid in
the oscillating tank. Make especially sure that the heating is
switched off when the oscillating tank is empty. The fill level
must always be at or slightly above the filling level mark.

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Safety/2
2.13 Disturbance of wireless communication
The ultrasound bath may interfere with other wireless communica-
tion ultrasound baths in the immediate vicinity, such as:
• mobile phones,
•WLANdevices,
•Bluetoothdevices.
If interference occurs with the operation of a wireless device, move
it further away from the ultrasound bath.
The ultrasound bath meets the requirements for class B devices
according to EN 55011.
2.14 Safety stickers on the ultrasound bath
• Observe all safety labels on the ultrasound bath.
• Keep the safety stickers in legible condition. Do not remove
them. Replace them if they are no longer legible. To do so,
please contact our Customer Service. See chapter 6.4Repair.

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3 Design and function
3.1 Structure
Fig. 1 Overview of the device
1 Handles (depending on model)
2 Oscillating tank
3 Control panel
4 Filling level mark
5 Drain with ball valve (depending on model)
6Housing
7 Device feet
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567

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Design and function/3
3.2 Control panel
Fig. 2 Controls for devices with heating
Fig. 3 Controls for devices without heating
1 On/off button for switching the device on and off
2 Button for setting the heating temperature with temperature scale
3 Button for setting the sonication time with time scale
4 Start/stop button for ultrasound
3.3 Function
The ultrasound bath uses cavitation triggered by low-frequency
ultrasound. Piezoelectric oscillating systems are located on the
underside of the oscillating tank. The ultrasound generates strong
pressure fluctuations in the sonication fluid. Cavitation bubbles are
formed at the pressure minima. At higher ambient pressure around
the bubbles, they collapse very quickly. This results in strong local
microcurrents on the surfaces of the objects being treated. This
removes dirt from the surface of the objects. Dirt particles are
removed and fresh sonication fluid flows in.
SONOREX ultrasound baths use SweepTec®, a technology in which
the ultrasonic frequency often fluctuates around the value of the
operating frequency. The optimal operating frequency depends on
the load, filling level, temperature and type of sonication fluid. The
21 3 4
31 4

3/Design and function
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operating frequency can deviate significantly from the nominal fre-
quency. SweepTec® creates an especially homogeneous ultrasonic
field in the bath volume for consistently optimal results.
3.4 Remote control
The devices with the additional designation "RC" are equipped with
an infrared interface for remote control from a PC. For communica-
tion, you require the WINSONIC-DT remote control, which consists
of the infrared adapter IR 1 and software (order no. 3090).
Various additional functions allow easy operation using a PC to
control processes and for quality control. The WINSONIC DT soft-
ware required for this is not part of the standard scope of delivery
of the devices. You can install the software on operating systems
from Windows 2000. For further information, refer to the user
manual for the WINSONIC DT software.
The command set for the infrared interface will be provided free of
charge by the manufacturer on request. The user is responsible for
the program-related implementation required for communication.
This is not supported by the manufacturer. The manufacturer only
guarantees the correct functioning of the infrared interface.

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Preparation for operation/4
4 Preparation for operation
4.1 Installation site requirements
The installation location of the ultrasound bath must meet the fol-
lowing conditions:
• The installation surface must be horizontal, firm and dry.
• The load-bearing capacity must be sufficient for the ultrasound
bath with the sonication fluid. For weight and work content, see
chapter 8.1Technical data.
• Adequate ventilation must be ensured. The air supply under the
bottom of the unit may not be obstructed. If a sound proof box
is used, it must also ensure sufficient ventilation.
• A water connection should be available nearby to fill the ultra-
sound bath. A basin must be available to drain or pour out the
sonication fluid.
4.2 Fitting ball valve
Concerns devices from DT 102 H / DT 102 H-RC.
Fit the supplied ball valve, the hose grommet and the hose as
described in the assembly instructions included with the ball valve.

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4.3 Performing a function test
Requirement
• The device has adapted to the climatic conditions at the setup
location for at least 2 hours.
Procedure
1. Insert the mains plug for the device into an earthed mains
socket.
2. Press the on/off button to switch on the device.
3. Switch the ultrasound on briefly. Do this by pressing the start/
stop button. After 1 to 2 seconds, press the start/stop button
again to switch off the ultrasound.
Result
» A noticeable noise can be heard when the ultrasound is
switched on.
Contact our service department if you cannot hear any noise.
A foil test should be performed before the first use. This is used to
document the effectiveness of the ultrasound. See chapter 6.3Per-
forming the foil test.
4.4 Rinsing out the oscillating tank
Thoroughly rinse the ultrasound bath’s oscillating tank with water
before first use.
In order to protect the surface during transport and storage, the
ultrasound bath is covered with an oily preservative. Before the
ultrasound bath is put into service, this preservative must be
removed with a suitable cleaning agent.

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Operation/5
5 Operation
5.1 Direct and indirect sonication
Objects can be sonicated directly or indirectly in the ultrasound
bath.
Direct sonication is the standard procedure. The objects to be
treated are introduced in the oscillating tank with suitable accesso-
ries, e.g. a basket. There they have direct contact with the sonica-
tion fluid.
Indirect sonication is used in the following cases:
• Sonication of sample fluids,
• Use of chemically aggressive or flammable liquids,
• Use of demineralised water without additives,
• Removal of chemically aggressive contamination,
• Removal of stains, discolouration and rust using acidic prepara-
tions.
The objects or liquids to be sonicated are introduced in the contact
liquid in an inset beaker, for transfer of the ultrasound in the oscil-
lating tank. The contact liquid in the oscillating tank must contain a
surfactant preparation.
For suitable accessories for direct and indirect sonication, see chap-
ter 10Accessories.
5.2 Sonication fluid
A solution made from water and a special ultrasound agent is used
as the sonication fluid. Drinking water or demineralised water can
be used for the water.
Water without any additives is unsuitable for sonication. Use of
demineralised water without an ultrasound agent leads to
increased erosion of the ultrasonic oscillating tank.
The ultrasound agent used must foster cavitation and be biode-
gradable, easy to dispose of, material-compatible and long-lasting.
BANDELIN recommends ultrasound agents from the TICKOPUR,
TICKOMED and STAMMOPUR product ranges from DR. H. STAMM
GmbH.

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20/52 1686-001 en/2022-05
• Telephone advice: [phone]
• Internet: www.dr-stamm.de
Observe the information on dosing provided by the ultrasound
agent manufacturer. Please refer to the dosing table for the
required quantities of ultrasound agent and water. See chapter
9Dosing table.
You can calculate the quantities yourself in the same way as the
following example:
10 l ready to use solution, 2.5%:
5.3 Sonication time
NOTICE
Risk of damage to the goods to be treated
Excessively long sonication can damage the surface of the goods to
be treated.
– Select a short sonication time where possible.
The ideal sonication time depends on several factors:
• Type and concentration of agent
• Working temperature of sonication fluid
• Type of soiling
• Type of goods to be treated, in particular materials
Note the information on the recommended sonication time from
the agent manufacturer. To begin with, select as short a sonication
time as possible to protect the objects to be sonicated and the
ultrasonic oscillating tank. Check the result. Lengthen the sonica-
tion time if the result is not sufficient.
10 l x 2,5 %
= 0,25 l agent
100 %
10 l - 0,25 l = 9,75 l water