Retsch UR 1 User manual

Operating Instructions for Ultrasonic Cleaners
Types UR 1 and UR 2
©Retsch GmbH , 42781 Haan, Retsch-Allee 1-5, Germany, 5/11/2021 0002

5/11/2021 ©Retsch GmbH 2 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.

5/11/2021 ©Retsch GmbH 3 0002
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 cleaner12
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

5/11/2021 ©Retsch GmbH 4 0002
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.
No liability in any form will be accepted for damage or injury resulting
from failure to observe the following notes on safety.

5/11/2021 ©Retsch GmbH 5 0002
Warning symbols
We use the following symbols to warn of:
!
Personal injury
Damage to property
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:
The Retsch agency in your country
Your supplier
Retsch GmbH direct
Your service address:
Confirmation
I have read and understood the foreword and the chapter on safety.
___________________________________________
Signature of the operator
___________________________________________
Signature of service technician

5/11/2021 ©Retsch GmbH 6 0002
Technical data
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.
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.
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 Lp eq = 50 dB(A)
Service conditions:
Cleaning fluid: water
Filling: 100%
Object to be cleaned: Analysis sieve 200x50 in basket
Wear ear protectors when working continuously within a radius of 2
m around the ultrasonic unit to protect your health!

5/11/2021 ©Retsch GmbH 7 0002
Noise data for UR 2:
Noise measurement to DIN 45635-31-01-KL3
Sound power level LWA = 86 dB(A)
Workplace related emission level Lp eq = 80 dB(A)
Service conditions:
Cleaning fluid: water
Filling: 100%
Object to be cleaned: Analysis sieve 400x65
Wear ear protectors when working continuously within a radius of 2
m around the ultrasonic unit to protect your health!
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.

5/11/2021 ©Retsch GmbH 8 0002
Transport and installation
Target group: Operators
Packaging
The packaging is suitable for the mode of transport selected. It
complies with the general packaging regulations.
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.
Transport
The ultrasonic cleaner must not be thrown, subjected to impact
or shock during transport. The electronic and mechanical
components may otherwise be damaged.
Temperature fluctuations
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.
Interim storage
Also ensure that the ultrasonic cleaner is stored in a dry place, even for
interim periods.

5/11/2021 ©Retsch GmbH 9 0002
Parameters for the installation location
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
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.
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.
At higher humidity, the electronic components
may be damaged.
Site altitude:
max. 2000 m above sea level
Installation
Always set up the ultrasonic cleaner on a dry and firm base.
Electrical connection
A B
•The voltage and frequency of the ultrasonic cleaner can be found
on type plate Aon 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 Bsupplied.
•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.

5/11/2021 ©Retsch GmbH 10 0002
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 Garound 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.