BANDELIN SONOREX TECHNIK W 65 User manual

Instructions for Use
3 4
Ultrasonic baths for aqueous fluids
valid for:
W 65
W 300
23486a GB/2017-10

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Copyright & limit 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-language 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 will
take precedence.
BANDELIN accepts no responsibility or liability for damage caused by improper handling or usage contrary to the intended pur-
pose.
The documentation has been prepared with great care. Liability for indirect or direct damage arising because of incomplete or
erroneous information in this documentation, as well as its delivery and usage, is excluded.
© 2017
1 2 GmbH & Co. KG, Heinrichstrasse 3 – 4, 12207 Berlin, Germany
Phone: [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 Instructions for Use 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 should be read
carefully and completely in order for the user to become familiarised with all functions.
The warnings and safety precautions (chapter 1.5) must always 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 become void.
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 in order to prevent damage to the device or 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 hearing
protection
For health reasons, remaining for long periods of time in the
vicinity of the device without ear protectors is prohibited.
Instructions Identifies instructions that must be followed in the described
sequence.

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Table of Contents
1 Product description ......................................................................................................6
1.1 Mode of operation ........................................................................................................7
1.2 Purpose ........................................................................................................................7
1.3 CE conformity ...............................................................................................................7
1.4 Technical data, general ................................................................................................8
1.4.1 Tank size W 65 .............................................................................................................9
1.4.2 Tank size W 300 ...........................................................................................................9
1.5 Warning and safety precautions .................................................................................10
2 Preparation .................................................................................................................11
2.1 Scope of delivery ........................................................................................................11
2.2 Set-up / assembly ......................................................................................................11
2.3 Start-up ......................................................................................................................12
3 Operation ...................................................................................................................13
3.1 Operating elements ....................................................................................................13
3.1.1 Ultrasound ..................................................................................................................13
3.1.2 Heating .......................................................................................................................14
3.2 Miscellaneous functions - not applicable - ...................................................................14
3.3 Device signals - not applicable - ..................................................................................14
4 Use .............................................................................................................................14
4.1 Instructions for use .....................................................................................................15
4.2 General use ................................................................................................................16
4.3 Further information .....................................................................................................19
4.3.1 Degassing ..................................................................................................................19
4.3.2 Disposal of sonication fluids .......................................................................................19

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5 Maintenance and cleaning .........................................................................................20
5.1 Cleaning and care ......................................................................................................20
5.2 Warehousing / storage ...............................................................................................21
6 Service and repair ......................................................................................................21
6.1 Service .........................................................................................................................21
6.2 Functional checks ......................................................................................................21
6.2.1 Inspection of the float switch for the W 300 ...............................................................22
6.3 Error analysis .............................................................................................................22
6.4 Customer service .......................................................................................................23
6.4.1 Repairs and service ...................................................................................................23
6.4.2 Decontamination certificate ........................................................................................23
6.4.3 Exchanging fuses .......................................................................................................24
7 Accessories ................................................................................................................25
7.1 Required accessories .................................................................................................25
7.2 Optional accessories - not applicable - ......................................................................25
7.3 Chemical preparations - Recommendations ..............................................................26
8 Consumable materials - not applicable - .....................................................................28
9 Taking the unit out of service ......................................................................................28
10 Key words - not applicable - ................................................................................................ 28
Informative appendices
A Decontamination - sample copy

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1 Product description
Ultrasonic bath of type SONOREX TECHNIK W... .
The exact type specification and serial number are found on the type plate, on the rear
side of the ultrasonic bath.
Product features W 65:
• Stainless steel oscillating tank (1) with high-grade PZT high-performance ultrasonic
systems, ultrasound frequency 40 kHz
• Timer for 1 - 15 min and continuous
operation (2)
• Heating for temperature regulation (3) in
the tank 30 - 80 °C
• Easy-to-clean stainless steel housing (4)
• Filling level mark for safe filling (5)
• Rubber feet for safe positioning (6)
• Outlet with ball valve (7) for easy
draining of the bath fluid
Product features W 300:
• Stainless steel oscillating tank (1) with high-grade PZT high-performance ultrasonic
systems, ultrasound frequency 40 kHz or 25 kHz
• Timer for 1 - 15 min and continuous operation (2)
• Heating for temperature
regulation (3) in the tank 30 -
80 °C
• Easy-to-clean stainless steel
housing (4)
• Filling level mark for safe filling
(5)
• Height-adjustable legs (6) for a
secure and level position
• Outlet with 3-way ball valve (7)
for easy draining/filling of the
bath fluid
SONOREX TECHNIK W 65
3
5
6
4
1
7
2
SONOREX TECHNIK W 300
3
5
6
4
1
7
2

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1.1 Mode of operation
SONOREX ultrasonic baths use the effect of cavitation. Under the bottom of the
oscillating tank they contain piezoelectric transducers, the energy of which is
transferred to the bath fluid with ultrasound frequency as mechanical oscillations. As a
result, microscopically small bubbles are continuously formed in the bath fluid, which
release energy upon imploding and generate local microcurrents. This process is
called cavitation. During the cleaning process, it causes contamination to be "blasted"
from the hard surfaces of the objects being treated. At the same time, dirt particles are
dispersed and fresh bath fluid 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.
1.2 Purpose
SONOREX TECHNIK ultrasonic baths are intended for the sonication of aqueous
liquids. They work on the basis of low-frequency ultrasound and can be used in
versatile ways. Their main application is the gentle and intensive cleaning of objects of
diverse shapes, types and sizes.
Sonication is always carried out together with a suitable preparation that is added to
the bath fluid. In order to use the device as intended, a basket or other inset beaker is
required, into which objects are placed during sonication. An optimum diffusion of the
ultrasound can only be guaranteed in this manner.
W 65:
The unit is operated from the front.
Operation is generally conducted on a table or on a rack.
W 300:
The unit is operated from the front. W 300 ultrasonic baths are designed as floor-
standing units.
1.3 CE conformity
The units fulfil the CE marking criteria in the following European Directives:
- Low-voltage directive
- Electromagnetic compatibility directive
in their currently valid versions.
A declaration of conformity can be requested from the manufacturer by providing the
serial number.

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1.4 Technical data, general
The ultrasonic baths are interference-free and CE - marked.
Safety: EN 61010-1,
EMC: EN 61326-1
Tank: Stainless steel, 2 mm
Housing: Stainless steel
Handles: on the sides
Heating: 30 – 80 °C
Timer: 1 – 15 min and 
Degree of
protection: IP 32 according to DIN EN 60529
Environmental conditions pursuant to EN 61 010-1
Overvoltage category: II
Degree of contamination: 1
Permissible ambient temperature: 5 to 40°C
Permissible relative humidity up to 31 °C: 80 %
Permissible relative humidity up to 40 °C: 50 %
Condensation not allowed.
Only for indoor operation.
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.
Protected against access
to hazardous parts with
tools; protected against solid
objects with a diameter of
2.5 mm or larger
Protected from dripping
water up to 15° from its
vertical axis

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1.4.1 Tank size W 65
Mains supply: 230 V~ (± 10 %) 50/60 Hz, alternatively 115 V~
Cable length: 2 m
Frequency: 40 kHz
Exterior dimensions: 560 × 360 × 650 mm (L × W × H)
Interior dimensions: 500 × 300 × 450 mm (L × W × D)
Contents: 67.5 l
Operating volume: 30 l
Outlet G ½, ball valve
Weight: 30.0 kg
Ultrasonic peak power*: 1200 W
Ultrasonic nominal output: 300 W
Heating power: 1450 W
Current consumption: 7.7 A
Fuses for generator: F2A
Fuses for heating system: F10A
* In order to improve the effect, the ultrasound is modulated, resulting in a 4-fold ultrasonic nominal output value as ultrasonic peak
power.
1.4.2 Tank size W 300
Mains supply W 300: 400 V 3N~ (± 10 %) 50/60 Hz
W 300-S: On-board power supply for ships
(acc. to specifications)
Cable length: 3 m
Frequency: 40 kHz (25 kHz upon request)
Exterior dimensions: 1180 × 600 × 1000 mm (L × W × H)
Interior dimensions: 1000 × 500 × 600 mm (L × W × D)
Contents: 320.0 l
Operating volume: 185.0 l
Outlet G 1, 3-way ball valve
Weight: 170.0 kg
Ultrasonic peak power*: 2 × 4000 W
Ultrasonic nominal output: 2 × 1000 W
Heating power: 7.2 kW
Current consumption: 14.8 A
Fuses for generator: T6A
Fuses for heating system: T12A
* In order to improve the effect, the ultrasound is modulated, resulting in a 4-fold ultrasonic nominal output value as ultrasonic peak
power.

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1.5 Warning and safety precautions
General
• Keep the ultrasonic bath out of the reach of children and of persons who have not
been instructed in its operation by reference to these instructions.
• We do not offer a guarantee for damage 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 corrosive influences.
• Only move the ultrasonic bath when it is empty.
• Empty the ultrasonic bath only while turned off.
The tank is emptied using the ball valve. To do so, turn the handle in the direction of
the outlet.
• Ultrasonic baths adhere to prescribed EMC limit values, so it can be assumed that
the electromagnetic radiation emanating from the units is harmless to humans.
However, 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.
• If the unit is passed on to others, the operating instructions with the safety
instructions must also be handed over.
Operation and transport
• 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
chapter 7.
• Do not immerse any parts of the body (e.g. hands, feet) or living beings (animals or
plants) in 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 5 m radius, adequate hearing protection
must be used. Danger: Hearing loss possible if not wearing hearing protection
during operation – the typical ultrasound cavitation noise can be perceived as very
unpleasant.
• When preheating the bath liquid, stir at least every 30 min. or switch on the
ultrasound. Danger: Scalding due to retardation of boiling.
• Do not leave the ultrasonic bath unattended while in operation.
Damage and defects
• If damage to the ultrasonic bath is detected, do not connect the ultrasonic bath to the
mains.
• In the event of defects, disconnect the power plug immediately.
• Repairs must only 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 damage. If any damage or defects are found,
these must be immediately notified in writing to the transportation company and to the
supplier.
Before operation, the ultrasonic bath should be allowed to stand for 2 hours at its
operating location so that it can adjust to the ambient conditions.
2.1 Scope of delivery
1 Ultrasonic bath, see delivery slip
1 Accessories kit
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 tank, including liquids.
For net weight, see technical data, chapters 1.4.1 and 1.4.2.
- do not block the air supply below the tank.
- guard against moisture and wetness – risk of electric shock.
• W 300:
Operation is not permitted if the legs are not screwed on, this will cause the built-in
fan cooling on the bottom of the device to become inoperable.
Minimum distance to the ground: 30 mm!
The ultrasonic bath will become critically damaged without cooling.
Set-up
Fully remove transportation aids (pallets, transport safety devices).
The height-adjustable legs provided should be mounted on the bottom of the tank.
The tank must then be horizontally levelled.
Set up the ultrasonic bath in a dry room.
Assemble the ball valve, hose sockets and hose included in the delivery, as follows:

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1. Screw the counter nut onto the threaded sleeves 1 at the
tank outlet, then seal with the white PTFE tape provided,
applying several turns of tape to the right.
2. Tape the hose socket threads 2 with PTFE sealing tape.
3. Screw the hose sockets 2 into the ball valve outlets 3,
using the appropriate spanner.
4. Screw the ball valve 3 onto the threaded sleeves and
tighten with the counter nut 4.
Caution: Do not screw the ball valve up to the limit stop
or back it off by rotating it slightly to the left, this will cause
the PTFE tape to lose its sealing effect.
5. Close ball valve, turn the lever 5 upwards.
2.3 Start-up
Thoroughly rinse the ultrasonic bath's oscillating tank with water before its first use.
Verify that the control buttons are in the "off" position, i.e. the switch indicator is at
the top, then connect the bath to the mains.
Conduct function test on the ultrasonic bath – briefly plug in the ultrasound
(maximum of 1 to 2 seconds), a hissing noise should be heard. Set to "0" once
again.
Hang accessories in the ultrasonic bath and place lid on top.
View from above:
4
13
25
openopen closed
2
screwed-in

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3 Operation
3.1 Operating elements
The ultrasound and the heating system are operated from the front:
3.1.1 Ultrasound
The ultrasound is operated through the turning knob (timer).
Timed operation:
• Turn knob to the right
range of time 1 - 15 minutes
- Green control light is illuminated.
- Once the time has elapsed, the timer automatically
turns off.
• By turning the knob back, the operating time is
shortened or the ultrasonic bath is turned off.
Continuous operation:
• Turn knob to the left
Setting ∞
- Green control light is illuminated.
- The ultrasonic bath does not turn off automatically; to switch it off turn the knob
to the right, back to "0".
Notes
• While turned off, the ultrasonic bath may remain connected to the mains.
It can be disconnected by pulling out the mains plug.
• The "latching" of the turning knob will be barely felt if mains voltage is not present,
e.g. if the mains plug is disconnected or the fuse is blown.
The timer only works if mains voltage is present.
1 Turning knob for heating ON / OFF incl. controller
2 Turning knob for ultrasound ON / OFF with preset time
3 White control light (heating is activated)
4 Yellow control light (heating in operation)
5 Green control light (ultrasound in operation)
green
34 5
12

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3.1.2 Heating
The heating is operated through the turning knob (heating).
• Turn knob to the right Temperature
range 30-80 °C:
- The yellow and white control lights are
illuminated.
- The yellow control light goes out when the set
temperature is reached.
- To turn it off, turn the knob to the left, back
to "°C".
Notes:
• The heating system works independently from the ultrasound.
• The heating automatically turns on every time the bath temperature drops below the
set temperature.
3.2 Miscellaneous functions - not applicable -
3.3 Device signals - not applicable -
4 Use
Sonication or rinsing always take place directly in the tank.
For this purpose, the objects are placed in a basket and hung
inside the tank which is filled with bath fluid.
yellow
white
Sonication fluid
Insert basket

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4.1 Instructions for use
Instructions - filling
• Verify that the ball valve is closed.
• Ultrasound and heating must be turned off.
• Do not fill ultrasonic tank with hot water. Maximum filling temperature: 50 °C.
• At least drinking-quality water must be used to fill the oscillating tank.
• Water without additives is not suited for sonication. BANDELIN recommends
TICKOPUR or STAMMOPUR preparations.
• The fill level must always be at or slightly above the filling level mark.
A low fill level will damage the ultrasonic bath!
This may occur, for example, through evaporation when used for extended periods.
In such cases, the ultrasound and possibly the heating must be switched off
(controller on 0). Once the tank is filled up, the ultrasound and the heating, if
applicable, can be switched back on.
W 300:
As a precaution, the ultrasonic bath is equipped with a fill level switch that protects
heaters and ultrasound systems from dry operation. Operation is not possible if the
level of liquid in the tank is too low.
• 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 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 respective product
leaflets must strictly be adhered to.
• Replace used sonication fluids, do not refresh by adding fluids.
Notes - Inserting objects
• Fully remove air bubbles
from cavities (e.g. blind
holes).
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. At higher temperatures,
the effect of the ultrasound cavitation decreases again, however1.
• In order to save time during use, the bath fluid may be preheated during degassing.
1 MILLNER, R.: Wissenspeicher Ultraschalltechnik, Fachbuchverlag publishing house, Leipzig 1987

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• Ultrasound energy warms up the sonication fluid (even without additional heating).
- In the case of continuous sonication and/or covering the oscillating tank,
the fluid temperature may increase more quickly and even rise above the
maximum adjustable value of the thermostat (80 °C). 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 may not exceed a maximum operating temperature of
100 °C.
• Cover the ultrasonic bath when in continuous operation so that not too much bath
liquid evaporates.
• For safety reasons, ultrasonic baths should be covered when not in operation, to
prevent operating and external personnel from inadvertently coming into contact with
the bath liquid and being injured by liquids that are still hot.
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 chapter 7.3.
Fill 1/3 of oscillating tank with water.
Add dosed preparation to the oscillating tank.
Fill carefully up to the filling level mark, avoid the formation of foam as much as
possible.
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 chapter 4.3.1.
Remove basket and other accessories from the oscillating tank.
Place lid on top.
Turn on the ultrasound with the turning knob and sonicate for 30 min for degassing,
see chapter 3.1.1.

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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.
Using the turning knob, set the desired temperature, see chapter 3.1.2.
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 a retardation of boiling – risk of
scalding!
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.
Hang the insert basket with the items to be sonicated.
Check that the objects to be treated are fully covered with fluid.
With every object inserted, the fill level is to be controlled.
For cleaning tasks
Place the objects to be cleaned in the appropriate accessories, in doing so please note:
• Distribute the objects evenly, do not stack them.
• Overloading the basket will reduce the ultrasound effect (the ultrasound is
absorbed).
• Place the more heavily soiled side facing downward.
• Parts with joints must be fully opened before being placed inside.
• Fragile parts must not touch each other.
• 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.
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, it may be necessary to conduct sonication for a longer
time.
Place lid on top.
Using the turning knob, set the desired sonication time, see chapter 3.1.1.

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Step 6: Remove 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.
Turn off the ultrasound.
Remove the basket from the tank and place it securely on a horizontal surface.
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. Next, visually check the sonication results.
Before the next sonication, verify the service life (see chapter 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 chapter 4.3.2.
Turn off the ultrasonic bath.
Empty the oscillating tank by turning the ball valve handle in the direction of the
discharge to open the outlet.
After emptying the oscillating tank, rinse it thoroughly. Wipe dry with a soft cloth.
For additional care instructions, see chapter 5.

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4.3 Further information
4.3.1 Degassing
Degassing the sonication fluid increases the ultrasound effect.
Freshly-filled fluid or fluid that has remained in the oscillating tank for a longer period
of time must be degassed prior to use. Gases dissolved 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 fade away at
the end of the degassing process and the ultrasonic bath appears to work more quietly.
A lower noise level, however, does not mean a reduction in ultrasonic power. Rather, it
signifies the end of the degassing process and an improvement in the ultrasound effect.
4.3.2 Disposal of sonication fluids
The working solution should be disposed of pursuant to the specifications of the
product leaflet and the label. 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 may be added to sewerage as working solutions.
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., may enter the working solution, depending on the type of contamination. If the
limit values are exceeded, the working solution must be reconditioned (removal of
contaminants) or be disposed of as toxic waste.
Disinfecting 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 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.

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5 Maintenance and cleaning
To achieve an optimum lifespan for the ultrasonic bath, cleaning and maintenance are
to be conducted regularly.
CAUTION!
Disconnect the bath from the mains before each cleaning / maintenance.
Do not rinse or immerse the ultrasonic bath in water and do not expose it to splash
water.
No guarantee is provided for damage caused by the use of unsuitable disinfection
agents or detergents.
5.1 Cleaning and care
Oscillating tank
The oscillating tank of an ultrasonic bath is a wearing part.
It is continuously exposed to cavitation during ultrasound operation. Dirt particles
remaining in the tank abrade and damage the tank surface due to the movement of the
fluid, therefore
• Thoroughly and frequently rinse the oscillating tank with water and wipe dry using a
soft cloth.
• Regularly remove residue from the edges of the oscillating tank using a commercial
stainless steel cleaning product without any abrasive additives.
• Do not use steel wool, scrapers or graters for cleaning / maintenance.
• Metal particles that remain on the stainless steel surface as well as rust particles
from the water pipe system penetrate the passive protective layer of the stainless
steel. The stainless steel is "activated" in this process and begins to rust. The
extraneous rust produces localised corrosion of the stainless steel. For this reason,
remove metal parts such as screws, filings, etc. from the oscillating tank, and
immediately remove rust stains using a soft cloth and a commercial stainless steel
cleaning product without abrasive additives.
• W 300:
The free movement and function of the float used for fill level control – on the front,
left – must be checked from time to time.
Housing
• Do not use any abrasive cleaners, only commercial care products without abrasive
additives.
• Wipe down only the exterior of the housing with a damp cloth and leave to dry or
wipe dry.