Operating Instructions for Ultrasonic Cleaners
Types UR 1 and UR 2
Retsch GmbH , 42781 Haan, Retsch-Allee 1-5, Germany, 2/8/2012 0002
Notes on the operating instructions
These assembly and operating instructions for the ultrasonic cleaners
of types UR 1 and UR 2 provide all the necessary information on the
topics listed in the table of contents.
They guide the target group(s) defined for the relevant subjects in safe
and proper handling. Knowledge of the relevant chapters by the
appropriate target group(s) is essential for safe and proper handling.
This technical documentation comprises a reference work and a
training guide. The individual chapters are self-contained units.
These operating instructions do not contain any instructions on repairs.
Should any repairs become necessary, please contact your supplier or
Retsch GmbH direct.
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Notes on the operating instructions .............................. 2
Safety .............................................................................. 4
Notes on safety .................................................................... 4
Warning symbols ................................................................. 5
Repairs ................................................................................... 5
Confirmation ........................................................................ 5
Technical data ............................................................... 6
Use for the intended purpose ............................................ 6
Emissions .............................................................................. 6
Rated voltage ........................................................................ 7
HF frequency ....................................................................... 7
Capacities .............................................................................. 7
Current consumption .......................................................... 7
Fuses ...................................................................................... 7
Dimensions ........................................................................... 7
Mounting surface required ................................................. 7
Transport and installation ............................................. 8
Packaging .............................................................................. 8
Transport .............................................................................. 8
Interim storage ..................................................................... 8
Parameters for the installation location ............................ 9
Installation ............................................................................ 9
Electrical connection .......................................................... 9
Assembly of the discharge hose ........................................ 10
Operation ....................................................................... 11
Controls and operation ....................................................... 11
Overview table ................................................................... 11
Operation of the ultrasonic cleaners ................................. 12
Switching on and off ........................................................... 12
Setting the time .................................................................... 12
Prior to cleaning operations with the ultrasonic cleaner 12
Degassing the cleaning fluid ......................................... 12
Cleaning duration ............................................................. 12
Cleaning with the ultrasonic machine............................... 13
Emptying the vibratory trough .......................................... 14
Notes on operation ........................................................ 15
Cleaning ................................................................................ 15
Homogenising ...................................................................... 15
Dispersing ............................................................................. 15
General ........................................................................... 16
Ultrasonic machine technology ......................................... 16
Accessories ........................................................................... 16
Cleaning the machine .......................................................... 16
Maintenance ......................................................................... 17
Copyright .............................................................................. 17
Modifications........................................................................ 17
Appendix ................................................ following pages
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Safety
No liability in any form will be accepted for damage or injury resulting
from failure to observe the following notes on safety.
Target group: All persons dealing with the machine in any way
The UR 1 and UR 2 are modern, powerful products from Retsch
GmbH. It reflects the state of the art. When the product is handled
correctly by persons familiar with this technical documentation, it is
completely safe and reliable in operation.
Notes on safety
You, as the operator, are responsible for ensuring that the persons
appointed to work with the ultrasonic cleaners UR 1 and UR 2:
have read and understood all the stipulations of the chapter on safety,
are familiar before commencing work with all instructions and
regulations for the relevant target group,
have access to the technical documentation for this machine at all times
and without difficulty.
Ensure that new staff have been familiarised with the rules for safe and
proper handling before commencing work with the UR 1 or UR 2
either by oral instruction by a competent person and/or by this
technical documentation.
Incorrect operation can lead to damage or injury. You are responsible
for your own safety and that of your staff.
Ensure that no unauthorised persons have access to the UR 1 and UR
2.
For your own protection, have your staff confirm that they have been
instructed in operation of the UR 1 and UR 2. A draft of an
appropriate form can be found at the end of the chapter on safety.
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Warning symbols
!
Personal injury
Damage to property
The Retsch agency in your country
Your supplier
Retsch GmbH direct
We use the following symbols to warn of:
Repairs
These operating instructions do not contain any instructions on repairs.
For your own safety, only have repairs performed by Retsch GmbH or
an authorised agent (service technicians).
In such a case, please inform:
Your service address:
Confirmation
I have read and understood the foreword and the chapter on safety.
___________________________________________
Signature of the operator
___________________________________________
Signature of service technician
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Technical data
Never operate ultrasonic equipment without liquid.
The machine may otherwise be damaged.
!
The ultrasonic cleaners are not suitable for cleaning living beings
(plants, animals).
!
Do not use flammable liquids in ultrasonic equipment.
Danger of fire and explosion.
!
Do not reach into the cleaning fluid in the ultrasonic unit during
operation.
Hazard to health.
Do not make any modifications to the machine and use only RETSCH
approved spares and accessories.
Failure to comply will invalidate the CE declaration and
guarantee.
Wear ear protectors when working continuously within a radius of 2
m around the ultrasonic unit to protect your health!
Machine type designation: UR1 and UR2
Use for the intended purpose
The ultrasonic cleaners are suitable for:
rapid, gentle cleaning with high efficiency,
intensive homogenisation, dispersion and degassing.
In detail, they:
are universally usable and take up little space,
save time and costs,
are maintenance-free, long-lived and environmentally friendly.
Furthermore, they are notable for their easy handling. The ultrasonic
baths are not production machines, but laboratory equipment designed
for 8 hour single shift operation.
Emissions
Cavitation noise is generated during ultrasonic operation.
Noise data for UR 1:
Noise measurement to DIN 45635-31-01-KL3
Sound power level LWA = 75 dB(A)
Workplace related emission level L
Service conditions:
Cleaning fluid: water
Filling: 100%
Object to be cleaned: Analysis sieve 200x50 in basket
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= 50 dB(A)
p eq
Noise data for UR 2:
Wear ear protectors when working continuously within a radius of 2
m around the ultrasonic unit to protect your health!
Noise measurement to DIN 45635-31-01-KL3
Sound power level LWA = 86 dB(A)
Workplace related emission level L
Service conditions:
Cleaning fluid: water
Filling: 100%
Object to be cleaned: Analysis sieve 400x65
= 80 dB(A)
p eq
Rated voltage
See type plate on rear of machine
HF frequency
35 kHz
Capacities
UR 1 = 5.7 l
UR 2 = 42 l
Current consumption
UR 1 = 0.5 A
UR 2 = 1.3 A
Fuses
UR 1 = F2A / 250V
UR 2 = F4A / 250V
Dimensions
UR 1 :
Height: approx. 260mm x 260mm // Weight: approx. 5 kg
Internal vibrating trough = 245 mm x H 130 mm
UR 2 :
Height: approx. 460mm x 570mm // Weight: approx. 21 kg
Internal vibrating trough = 515 mm x H 200 mm
Mounting surface required
UR 1 :
260 mm x 260 mm; no safety clearances necessary.
UR 2 :
570 mm x 570 mm; no safety clearances necessary.
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Transport and installation
Please keep the packaging for the duration of the guarantee
period, as your guarantee claim will be endangered in the case of
a complaint or return of the machine in inadequate packaging.
The ultrasonic cleaner must not be thrown, subjected to impact
or shock during transport. The electronic and mechanical
components may otherwise be damaged.
When there are severe temperature fluctuations (e.g. during air
transport) the ultrasonic cleaner is to be protected from
condensation. The electronic components may otherwise be
damaged.
Target group: Operators
Packaging
The packaging is suitable for the mode of transport selected. It
complies with the general packaging regulations.
Transport
Temperature fluctuations
Interim storage
Also ensure that the ultrasonic cleaner is stored in a dry place, even for
interim periods.
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Parameters for the installation location
When the ambient temperature exceeds or falls below that
specified, the electronic and mechanical components may be
damaged, and performance data changed to an unknown
extent.
At higher humidity, the electronic components
may be damaged.
A B
The voltage and frequency of the ultrasonic cleaner can be found
on type plate A on the rear of the machine.
Ensure that the levels match the available mains supply.
Connect the ultrasonic cleaner to the mains using the connecting
cable B supplied.
The mains socket must be fitted with a protective earth contact.
Ensure that there is an external fuse in accordance with the local
regulations when connecting the unit to the mains supply.
Failure to observe the values on the type plate can result in
damage to electrical or mechanical components.
!
When the machine is set up in the immediate vicinity of a water
supply, a residual current operated circuit-breaker must also be fitted
to the power connection.
Danger of electric shock.
Ambient conditions to EN 61 010-1
(IEC 1010-1)
Degree of contamination 2 to IEC 664
Overvoltage category II
Ambient temperature:
5°C to 40°C
Humidity:
Maximum relative humidity 80% at temperatures up to 31°C,
decreasing in a straight line to 50% relative humidity at 40°C.
Condensation is not permissible.
Site altitude:
max. 2000 m above sea level
Installation
Always set up the ultrasonic cleaner on a dry and firm base.
Electrical connection
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Assembly of the discharge hose
C D E
F G
Fit seal G around thread F on the machine.
Screw on ball valve C.
Fit seal G around connector D.
Screw connector D into ball valve C.
Slide hose E onto connector D.
Check the discharge hose connection for freedom from leakage.
Escaping water can lead to damage of objects in the vicinity.
!
Remove the mains plug from the socket before checking the discharge
hose connection for leakage.
Escaping water can cause electric shocks.
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Operation
No.
Description
Function
1
Power cord
Connects the ultrasonic cleaner to the mains power supply.
2
Ball valve
Open =
Liquid can flow off from the vibratory trough
Closed =
Liquid is prevented from flowing out of the vibratory trough.
3
Discharge hose
Connects the ultrasonic cleaner to a water collecting point.
4
Knob
Switches the ultrasonic cleaner ON or OFF, and permits the setting of machine running
times.
Anti-clockwise to position = Continuous operation
Clockwise = Running times of 0 to 15 mins. can be set
Target group: Operators
Controls and operation
Graphical representation of the controls:
1 4 2 3
Overview table
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The ON/OFF knob is located on the front of the ultrasonic cleaner.
Turn the knob to the position.
The signal lamp lights up in green.
The ultrasonic cleaner is in continuous operation and will not switch off
automatically.
Turn the knob to the 0 position.
The signal lamp goes out.
The ultrasonic cleaner is then switched off.
Running times of 0 - 15 mins. can be set by turning the ON/OFF
knob clockwise.
Turn the knob to the desired running time.
The signal lamp lights up in green.
On expiry of the set time, the ultrasonic cleaner switches off
automatically.
The signal lamp goes out.
The switch is once again in the 0 position.
The running time can be reduced or the ultrasonic cleaner switched off
at any time by turning the knob anti-clockwise.
Also observe the data on the labels for the cleaning or contact
fluid.
Operation of the ultrasonic cleaners
Target group: Operators
Switching on and off
Setting the time
Prior to cleaning operations with the ultrasonic
cleaner
In most cases, water with a 5-10% admixture of cleaning agent, e.g.
”TICKOPUR RW77” which is available as an accessory, is sufficient as
the cleaning fluid.
The cleaning fluid can be degassed in advance to achieve a higher
cleaning effect.
Degassing the cleaning fluid
Cleaning and contact fluids contain dissolved gases (e.g. oxygen).
Cleaning or contact fluid which is fresh or which has been left to stand
for some time in the vibratory trough should be ultrasonically treated
(degassed) for approx. 5 to 15 minutes without any parts to be cleaned,
or for approx. 30 minutes in vibratory troughs with over 10 l volume.
A reduction in the noise level during treatment does not indicate any
drop in ultrasonic performance, but rather the end of the degassing
process.
Cleaning duration
The cleaning duration is always to be set as short as possible. The
duration can be approx. 1 to 15 minutes, depending on the degree of
contamination and the cleaning or contact fluid used.
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Cleaning with the ultrasonic machine
Fill the vibratory trough to at least 2/3 capacity with fluid, e.g.
TICKOPUR RW 77, which is available as an accessory.
No fluid, or too low a level, can lead to damage to the machine.
Do not stack the material to be cleaned.
The ultrasonic waves are otherwise absorbed.
Fragile parts must not touch each other.
Parts may otherwise be damaged.
Ensure that no air bubbles can form in cavities.
Cleaning will otherwise not be sufficient.
Do not place any parts directly in the vibratory trough or on its base.
The machine could be damaged.
No liability is accepted for damage to machines or instruments caused
by the use of unsuitable cleaning or contact fluid.
Do not use flammable liquids such as petrol or acetone, or chemicals
which contain or split off halogen ions as the contact fluid.
!
Do not reach into the cleaning fluid during ultrasonic cleaning.
Hazard to health.
The UR1 is suitable for cleaning of analysis sieves up to 215 mm in
diameter, and the UR2 up to 450 mm diameter.
In each cleaning operation, ensure that the material to be cleaned is
completely covered by the cleaning and contact fluid.
Fill the vibratory trough to at least 2/3 capacity with
cleaning/contact fluid, with 5 - 10% ”TICKOPUR RW77” cleaning
fluid, available as an accessory, added.
Place the material to be cleaned in the perforated basket available
as an accessory, with the dirtier side facing downwards.
Insert the perforated basket.
Switch the ultrasonic cleaner on.
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Emptying the vibratory trough
2 3
Always remove the mains plug before emptying the vibratory trough.
There are two ways to empty the vibratory trough in the ultrasonic
cleaner.
Grip the UR with both hands and tip the liquid into a sink as with a
saucepan
or
place the ultrasonic cleaner near a sink in such a way that hose 3
reaches into the basin.
Allow the liquid to drain off by opening ball valve 2. The position is
shown in the figure.
!
Always remove the mains plug before emptying the vibratory trough.
Danger of electric shock
!
When the machine is set up in the immediate vicinity of a water
supply, we recommend that a residual current operated circuitbreaker be fitted to the power connection.
Danger of electric shock
!
Never operate your ultrasonic cleaner directly in a sink.
Danger of electric shock
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Notes on operation
Target group: Operators
Cleaning
The ultrasonic bath gently and intensively cleans analysis sieves,
microprecision sieves, glass and metal parts, and metallographic and
geological samples, spectacles, jewellery, coins and many other objects.
The ultrasonic bath can also be used for processes other than cleaning.
Homogenising
The RETSCH ultrasonic bath is used in particle metrology for
preparation of suspension samples for wet sieving or sedimentation
analysis. For this purpose, the initial sample is to be placed in the
ultrasonic machine’s perforated basket in a separate vessel, e.g. a beaker
or plastic bottle. The ultrasonic waves break down particle clumps and
distribute the individual particles in the liquid. The addition of
dispersants to the suspension accelerates the process. See also DIN
66111.
Dispersing
Dispersing in the ultrasonic machine means ultra-fine distribution of
solids in liquid phases. This means improved quality for dispersions
and emulsions.
The Retsch ultrasonic cleaners can also be used in chromatography for
dispersion of the packing material in the slurry, so as to achieve
reproducible separations.
Our application laboratory will be pleased to answer any questions or
provide examples of further applications.
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General
Lid in stainless steel for type UR 1
1 litre TICKOPUR RW 77 cleaning agent
Perforated basket in stainless steel for type UR 1
Perforated basket in stainless steel for type UR 2
!
Do not clean the ultrasonic machines with running water or immerse
them in a sink.
Risk of fatal electric shocks
Only use a cloth moistened with water.
Do not use steel wool, scrapers or other abrasive tools.
The vibratory trough can otherwise be damaged.
Target group: Operators
Ultrasonic machine technology
A high frequency generator produces approx. 35,000 oscillations per
second which are transmitted to the cleaning fluid and cause it to resonate.
The energy density of the sonic field is so high that cavitation takes place.
Countless small vacuum bubbles are created and collapse within
microseconds as a result of pressure and suction: they implode. The pulses
thus released remove contamination even from the deepest, inaccessible
points, or lead to homogenisation, dispersion and degassing.
The compact housing and the vibratory trough consist of stainless steel.
The cleaning/contact fluid can be easily and safely drained off through the
discharge ball valve located on the housing.
In conjunction with the spray water protected design of the unit, this
provides a maximum of operational reliability.
Below the vibratory trough, there is the powerful HF generator with a
continuous peak power of 2x 240 or 2x 600 watts. The wide beam
vibration system with PZT oscillators act on the cleaning fluid evenly, thus
achieving an excellent cleaning effect.
Accessories
Cleaning the machine
The mains plug is to be disconnected before each cleaning operation.
Thoroughly rinse the machine’s stainless steel trough from time to time
and rub it dry.
If strips of dirt remain on the stainless steel surface of the vibratory
trough after a long period of use, these can be removed with a standard
commercial steel cleaner without scouring additives.
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Maintenance
Target group: Operators
The ultrasonic machines are extensively maintenance-free.
Have any necessary repairs performed by authorised specialists or
direct by Retsch GmbH only.
Copyright
This documentation may only be duplicated or passed on to third parties,
its contents passed on or otherwise used with the express approval of
Retsch GmbH.
Violators will be liable for damages.
Modifications
We reserve the right to make technical modifications without notice.
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Authorized person for the compilation of technical documents:
J. Bunke (technical documentation)
The following records are held by Retsch GmbH in the form of Technical Documentation:
Detailed records of engineering development, construction plans, study (analysis) of the measures required for
conformity assurance, analysis of the residual risks involved and operating instructions in due form according to
the approved regulations for preparation of user information data.
In case of a modification to the machine not previously agreed with us as well as the use of not
licensed spare parts and accessories this certificate will lose its validity.
Retsch GmbH Haan, April 2007
Dr. Stefan Mähler
Manager technical services
R e t s c h G m b H R e t s ch - A l l e e 1 - 5 4 2 7 8 1 H a a n Ge rm a n y w w w .r e t s ch .c om
Ultrasonic Universal Bath
UR 1 and UR 2
FB-EW-805-023 (E) Änderungsstand H 01.2012
CERTIFICATE OF CE-CONFORMITY
Translation
Certificate of CE-Conformity according to:
EC Low-voltage Directive 73/23/EEC
Conformity of the product described with the regulations of the European Directive 73/23/EEC is
demonstrated by the complete compliance with the aforementioned, harmonized European Standards:
EN 61010-1
DIN VDE 0100T
EC Electromagnetic Compatibility 89/336/EEC
Conformity of the product described with the regulations of the European Directive 89/336/EEC is
demonstrated by the complete compliance with the aforementioned, harmonized European Standards:
EN 55011
EN 61000-6-1
EN 61000-6-3
EN 60601-1-2
EC Medicine products 93/42/EEC
Conformity of the product described with the regulations of the European Directive 93/42/EEC is
demonstrated by the complete compliance with the aforementioned, harmonized European Standards:
EN ISO 14971
Conformity of the Ultrasonic Universal Bath Type UR 1 is assured.
Copyright
® Copyright by
Retsch GmbH
Haan, Retsch-Allee 1-5
D-42781 Haan
Federal Republic of Germany
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