Translation: Manual Vibratory Sieve Shaker AS 200 Basic
Translation: Manual Vibratory Sieve Shaker AS 200 Basic
Translation: Manual Vibratory Sieve Shaker AS 200 Basic
Translation
© Retsch GmbH, 42781 Haan, Retsch-Allee 1-5, Germany | 30.01.2018 Version 0006
Copyright
© Copyright by
Retsch GmbH
Retsch-Allee 1-5
42781 Haan
Germany
2
Table of Contents
1 Notes on the Manual ............................................................................................................................. 6
1.1 Disclaimer .......................................................................................................................................... 6
1.2 Copyright............................................................................................................................................ 6
1.3 Explanations of the Safety Instructions ............................................................................................. 7
1.4 General Safety Instructions ............................................................................................................... 8
1.5 Repairs............................................................................................................................................... 9
2 Confirmation Form for the Managing Operator ................................................................................ 10
3 Technical Data ..................................................................................................................................... 11
3.1 Degree of Protection ........................................................................................................................ 11
3.2 Emissions......................................................................................................................................... 11
3.3 Electromagnetic Compatibility (EMC) .............................................................................................. 12
3.4 Rated Power .................................................................................................................................... 12
3.5 Dimensions and Weight ................................................................................................................... 12
3.6 Required Floor Space ...................................................................................................................... 12
3.7 Receptacle Volume.......................................................................................................................... 12
3.8 Feed Grain Size ............................................................................................................................... 13
3.9 Payload ............................................................................................................................................ 13
3.10 Suitable Sieve Diameters ................................................................................................................ 13
4 Packaging, Transport and Installation .............................................................................................. 14
4.1 Packaging ........................................................................................................................................ 14
4.2 Transport.......................................................................................................................................... 14
4.3 Temperature Fluctuations and Condensation ................................................................................. 14
4.4 Conditions for the Installation Site ................................................................................................... 15
4.5 Electrical Connection ....................................................................................................................... 15
4.6 Type Plate Description ..................................................................................................................... 16
4.7 Removing the Transportation Lock .................................................................................................. 17
5 First Commissioning ........................................................................................................................... 19
5.1 Sieve Clamping Unit "economy" and "standard" ............................................................................. 20
5.2 Sieve Clamping Unit "comfort" ......................................................................................................... 20
6 Operating the Device .......................................................................................................................... 23
6.1 Use of the Device for the Intended Purpose .................................................................................... 23
6.2 Principle of Operation ...................................................................................................................... 24
6.3 Views of the Instrument ................................................................................................................... 25
6.3.1 Front ............................................................................................................................................. 25
6.3.2 Back ............................................................................................................................................. 26
6.4 Switching On / Off ............................................................................................................................ 27
6.5 Selection of the Test Sieves ............................................................................................................ 27
6.6 Performing a Sieving ....................................................................................................................... 27
7 Controlling the Device ........................................................................................................................ 29
7.1 Operating Controls, Displays and Functions ................................................................................... 29
7.2 Start Process ................................................................................................................................... 29
7.3 Stop Process ................................................................................................................................... 29
7.4 Pause Process ................................................................................................................................. 30
7.5 Amplitude ......................................................................................................................................... 30
7.5.1 Amplitudes in Dependence on the Load ...................................................................................... 31
7.6 Time ................................................................................................................................................. 33
7.7 Optimisation of Time and Amplitude ................................................................................................ 34
7.8 Operating Hours .............................................................................................................................. 35
7.9 Software Version ............................................................................................................................. 35
8 Wet Sieving .......................................................................................................................................... 36
8.1 Installing the Slash Protection ......................................................................................................... 36
8.2 Performing the Wet Sieving ............................................................................................................. 37
3
9 Error Messages and Information Notes ............................................................................................ 40
9.1 Error Messages ............................................................................................................................... 40
9.2 Information Notes ............................................................................................................................ 40
10 Return for Service and Maintenance ................................................................................................. 41
11 Cleaning, Wear and Maintenance ...................................................................................................... 42
11.1 Cleaning ........................................................................................................................................... 42
11.1.1 Cleaning of Test Sieves ........................................................................................................... 42
11.1.1.1 Cleaning of Test Sieves with Mesh Sizes > 500 µm ....................................................... 42
11.1.1.2 Cleaning of Test Sieves with Mesh Sizes < 500 µm ....................................................... 42
11.1.1.3 Drying of Test Sieves ....................................................................................................... 43
11.2 Wear ................................................................................................................................................ 43
11.3 Maintenance .................................................................................................................................... 43
11.3.1 Replacing the Fuses ................................................................................................................ 44
12 Accessories ......................................................................................................................................... 45
12.1 Test Sieves ...................................................................................................................................... 45
12.1.1 Certificate ................................................................................................................................. 45
12.1.2 Calibration Service ................................................................................................................... 46
12.2 Sieving Aids ..................................................................................................................................... 46
12.3 Add-on Weight ................................................................................................................................. 47
13 Disposal ................................................................................................................................................ 48
14 Index ..................................................................................................................................................... 49
4
Notes on the Manual
5
Notes on the Manual
This manual is a technical guide on how to operate the device safely and it contains all the
information required for the areas specified in the table of contents. This technical
documentation is a reference and instruction manual. The individual chapters are complete in
themselves. Familiarity (of the respective target groups defined per area) with the relevant
chapters is a precondition for the safe and appropriate use of the device.
This manual does not contain any repair instructions. In case of any obscurities or questions
with regards to this document or the device, as well as if faults arise or repairs are necessary,
please contact your supplier or get in touch with Retsch GmbH directly.
Revision status:
This document revision 0006 refers to the manual "Vibratory Sieve Shaker AS 200 basic" in
compliance with the Directive of Machinery 2006/42/EC.
1.1 Disclaimer
This document has been prepared with due care. Technical and software based modifications
are reserved. No liability is assumed for data loss, personnel injury or damage to the device
which results from the failure to observe the instructions and/or warnings in this document.
1.2 Copyright
This document or parts of it or its content may not be reproduced, distributed, edited or copied
in any form without prior written permission of Retsch GmbH. Damage claims shall be asserted
in the case of infringements.
6
Notes on the Manual
In this document the following safety instructions warn of possible dangers and damages:
DANGER D1.0000
Life-threatening personal injuries may result from disrespecting the safety instruction for
danger. There exists a very high risk of hazard of life or permanent injury to personnel.
Additionally, in continuous text or action instructions the signal word DANGER is used.
WARNING W1.0000
Serious personal injuries may result from disrespecting the warning notice. There exists an
elevated risk of an accident or severe or possibly fatal injury to personnel. Additionally, in
continuous text or action instructions the signal word WARNING is used.
CAUTION C1.0000
Moderate or mild personal injuries may result from disrespecting the safety instruction for
caution. There exists a medium or low risk of an accident or injury to personnel. Additionally, in
continuous text or action instructions the signal word CAUTION is used.
7
Notes on the Manual
NOTICE N1.0000
Property damages may result from disrespecting the notice. However, there exists no risk of
an injury to personnel. Additionally, in continuous text or action instructions the signal word
NOTICE is used.
CAUTION C2.0002
Target group:
All persons concerned with this device in any form.
This device is a modern, high performance product from Retsch GmbH and complies with the
state of the art. Operational safety is given if the device is handled for the intended purpose and
attention is given to this technical documentation.
Safety manager:
The managing operator himself must ensure that the people entrusted with working on the
device…
have noted and understood all the regulations regarding safety,
are familiar before starting work with all the operating instructions and specifications for
the target group relevant to their work,
have unrestricted and free access to the technical documentation of this device,
are familiar before starting work with the safe handling of the device and its use for its
intended purpose either by verbal instructions from a competent person and/or by means
of this technical documentation.
CAUTION Improper operation can result in personal injuries and material damage. The
managing operator himself is responsible for his own safety and that of his employees. The
managing operator himself is responsible that no unauthorised person has access to the device.
8
Notes on the Manual
CAUTION C3.0015
NOTICE N2.0012
1.5 Repairs
This manual does not contain any repair instructions. For safety reasons, repairs may only be
carried out by Retsch GmbH or an authorised representative or by qualified service technicians.
Service address:
9
Confirmation Form for the Managing Operator
The user of the device herewith confirms to the managing operator (owner) that he has received
sufficient instructions about the operation and maintenance of the system. The user has
received the manual, has read and taken note of its contents and consequently has all the
information required for safe operation and is sufficiently familiar with the device.
The managing operator should for legal protection have the user confirm the instruction about
the operation of the device.
I have read and taken note of the contents of all chapters in this manual as well as all
safety instructions and warnings.
User
10
Technical Data
3 Technical Data
3.1 Degree of Protection
IP54 (IP20 in the area of the sieve carrier passage)
3.2 Emissions
CAUTION C4.0011
CAUTION C5.0017
Hearing damage
A high sound level may be generated depending on the type of material, the
number of sieves, the sieving aid used, the amplitude set and the duration of the
sieving
Excessive noise in terms of level and duration can cause impairments or
permanent damage to hearing.
• Ensure suitable noise protection measures are taken or wear ear
protection.
Sound parameters:
The sound parameters are also influenced by the set amplitude, the number of test sieves and
the properties of the sample material.
Example 1:
Number of test sieves: 5
Amplitude: 1.5 mm
Feed material: Quartz sand (< 1 mm)
Sieve clamping unit: "comfort"
At these operating conditions, the workplace related equivalent continuous sound level
Leq = 51.2 dB(A).
Example 2:
Number of test sieves: 5
Amplitude: 3 mm
Feed material: Quartz sand (< 1 mm)
Sieve clamping unit: "comfort"
At these operating conditions, the workplace related equivalent continuous sound level
Leq = 61.6 dB(A).
11
Technical Data
Strong electromagnetic interference fields, such as high-power radio transmitters, can have an
adverse influence on the amplitude control of the AS 200 basic. Once the source of the
interference is eliminated, the AS 200 basic will return to normal operation by itself.
CAUTION C6.0047
Location requirements:
The device must be placed on a vibration-free, plane, stable and free surface to avoid
transmission of vibrations. A level base ensures the uniform distribution of the sample over the
sieve mesh fabric, as well as the stability of the device.
Examples for the maximum feed quantity according to DIN 66165 for test sieves of 200 mm in
diameter are listed in the following table:
12
Technical Data
Examples for the maximum feed grain size according to DIN 66165 are listed in the following
table:
Max. feed grain size Max. feed grain size
Mesh size Mesh size
according to DIN 66165 according to DIN 66165
22 µm 710 µm 4 mm 25 mm
45 µm 1 mm 8 mm 45 mm
63 µm 1.4 mm 16 mm 71 mm
125 µm 2.5 mm 22.4 mm 90 mm
250 µm 4 mm 45 mm 150 mm
500 µm 6 mm 63 mm 180 mm
1 mm 10 mm 90 mm 230 mm
2 mm 16 mm 125 mm 300 mm
The Vibratory Sieve Shaker AS 200 basic is designed for the measurement range of 20 µm to
25 mm.
3.9 Payload
Maximum sample quantity: 3 kg
Maximum sieve stack weight: 4 kg
Maximum payload: 7 kg (sample material plus test sieves)
Maximum sieve stack height: 510 mm
Maximum number of fractions: 9 (height of test sieves and collecting pan: 50 mm (2")) /
18 (height of test sieves and collecting pan: 25 mm (1"))
13
Packaging, Transport and Installation
NOTICE N3.0001
4.2 Transport
NOTICE N4.0017
Transport
Mechanical or electronic components may be damaged.
• The device may not be knocked, shaken or thrown during transport.
NOTICE N5.0014
Complaints
Incomplete delivery or transport damage
The forwarding agent and Retsch GmbH must be notified immediately in
the event of transport damage. It is otherwise possible that subsequent
complaints will not be recognised.
• Please check the delivery on receipt of the device for its
completeness and intactness.
• Notify your forwarding agent and Retsch GmbH within 24 hours.
NOTICE N6.0016
Temperature fluctuations
The device may be subject to strong temperature fluctuations during transport
(e.g. aircraft transport)
The resultant condensed water may damage electronic components.
• Wait before commissioning until the device has been acclimatised.
Temporary storage:
Also in case of an interim storage the device must be stored dry and within the specified
ambient temperature range.
14
Packaging, Transport and Installation
NOTICE N7.0021
Ambient temperature
Temperatures outside the permitted range
Electronic and mechanical components may be damaged.
The performance data alter to an unknown extent.
• Do not exceed or fall below the permitted temperature range (5 °C to
40 °C ambient temperature) of the device.
For ambient temperatures UT between 31 °C and 40 °C, the maximum relative humidity value LF
linearly decreases according to LF = –(UT – 55) / 0.3:
Ambient temperature Max. rel. humidity
≤ 31 °C 80 %
33 °C 73.3 %
35 °C 66.7 %
37 °C 60 %
39 °C 53.3 %
40 °C 50 %
NOTICE N8.0015
Humidity
High relative humidity
Electronic and mechanical components may be damaged.
The performance data alter to an unknown extent.
• The relative humidity in the vicinity of the device should be kept as
low as possible.
WARNING W2.0015
15
Packaging, Transport and Installation
NOTICE N9.0022
Electrical connection
Failure to observe the values on the type plate
Electronic and mechanical components may be damaged.
• Connect the device only to a mains supply matching the values on
the type plate.
WARNING When connecting the power cable to the mains supply, use an external fuse that
complies with the regulations applicable to the place of installation.
Check the type plate for details on the necessary voltage, frequency, and maximum
external current source fuse for the device.
The listed values must agree with the existing mains supply.
Only use the supplied power cable to connect the device to the mains supply.
2
6
3
4
8 7
9 10
11 12 13 14
1 Device designation
2 Year of production
3 Part number
4 Serial number
5 Manufacturer’s address
6 CE marking
7 Disposal label
8 Bar code
9 Power version
10 Mains frequency
11 Capacity
12 Amperage
13 Number of fuses
14 Fuse type and fuse strength
In the case of queries please provide the device designation (1) or part number (3), as well
as the serial number (4) of the device.
16
Packaging, Transport and Installation
WARNING W3.0005
NOTICE N10.0018
Transportation lock
Transport without transportation lock, or operation with transportation lock
Mechanical components may be damaged.
• Only transport the device with mounted transportation lock.
• Do not operate the device with built-in transportation lock.
SM
SM
ST
17
Packaging, Transport and Installation
GM
ST
The transportation lock consists of two long hexagonal screws (SM) securing the drive through
the sieve plate (ST).
Loosen the hexagonal screws (SM) on both sides of the sieve plate (ST) by means of a
13 mm open-end wrench and remove them.
Keep the transportation lock for later transport.
Remove the protective foil from the adhesive tape located on the underside of the rubber
disc (GM).
Position the rubber disc (GM) centrally on the sieve plate (ST) and press it down firmly.
NOTICE The weight without sieve stack and sieve clamping unit amounts approx. 35 kg. The
device must only be lifted by two people.
18
First Commissioning
5 First Commissioning
WARNING W4.0002
NOTICE N11.0002
NOTICE N12.0004
The AS 200 basic is suitable for test sieves of 100 mm to 203 mm outer diameter. Up to 18
fractions (17 test sieves plus collecting pan with a height of 25 mm), or 9 fractions (8 test sieves
plus collecting pan with a height of 50 mm) can be clamped.
NOTICE A high number of test sieves can significantly increase the total weight of the load
(sieve stack and sample material). Make sure not to exceed the maximum payload of 7 kg.
Different sieve clamping units and lids are available for the test sieves.
19
First Commissioning
A B1
SB ST
NOTICE To clamp a maximum of five test sieves and a collecting pan, shorter threaded rods
are available for the sieve clamping units "economy" and "standard". For sieving processes with
only one to three test sieves, the shorter threaded rods should be used. Long, projecting
threaded rods disturb the spreading of the sample material due to their natural vibration
behaviour.
20
First Commissioning
Place the assembly aid ring (MH1) on the assembly aid (MH2) and slide it down. This
presses the O-ring on the quick clamping unit and fixes the clamping lid.
Repeat this procedure for the other side.
MH1
D
MH2
OR F2
F1 F
Screw one hexagonal nut (G) on the thread of each of the support rods (E).
Screw both support rods (E) into the designated threaded holes (SB) in the sieve plate (ST)
and lock them with the hexagonal nuts (G).
Firmly tighten the hexagonal nuts (G) by means of a 19 mm open-end wrench.
SB ST
Place the desired sieve stack including the sample material centrally on the sieve plate (ST).
Place the assembled clamping lid on the support rods (E) with the quick clamping units
facing upwards.
Lift the red quick clamping levers (F2) of both quick clamping units (F) for freely sliding the
clamping lid up and down the support rods. Be sure not to push down the green quick
clamping levers when doing so.
Slide the quick clamping units with the clamping lid down the support rods (E) onto the top
test sieve.
When the clamping lid is correctly positioned on the sieve stack, press down the green quick
clamping levers (F1) 1 – 2 times in order to fix the clamping lid tightly on the sieve stack.
21
First Commissioning
NOTICE Always use both quick clamping units simultaneously! Do not activate both quick
clamping levers (red and green) of one quick clamping unit at the same time.
To loosen the clamping lid after the sieving process, lift the red quick clamping levers (F2).
Keep them lifted and slide the clamping lid upwards until the sieve stack can be removed.
There is no need to take off the clamping lid completely from the support rods.
CAUTION C7.0012
22
Operating the Device
CAUTION C8.0005
CAUTION C9.0006
CAUTION C10.0003
This Vibratory Sieve Shaker of the Retsch GmbH is a laboratory device. It is suitable for both,
dry and wet sieving of free-flowing, disperse materials in the grain size range from 20 µm to
25 mm.
The particle size distribution of soils, building materials, chemicals, fertilizers, fillers, grains,
coffee, plastics, flour, metal powders, minerals, nuts, seeds, sand, washing powder, cement
clinker and many other substances can be easily and quickly analysed.
The Vibratory Sieve Shaker of the Retsch GmbH is successfully deployed in almost all areas of
industry and research within the scope of quality control, especially where there are high
demands regarding easy operability, speed, precision and reproducibility.
The AS 200 basic is specially designed for test sieves with an outer diameter from 100 mm to
203 mm. For an optimum measurement result it is recommended to exclusively use test sieves
from Retsch GmbH.
23
Operating the Device
WARNING W5.0010
NOTICE N13.0007
24
Operating the Device
E
A
B F1
D
F2
C
G
G
Fig. 8: Front view of the device with different sieve clamping units
25
Operating the Device
6.3.2 Back
M
J
N
I
26
Operating the Device
When the device is switched off, it is completely disconnected from the mains.
Setting mode:
After switching on, the device is in the setting mode and the LED of the button (H1) is lit.
The displays "time" (H5) and "amplitude" (H4) show the last used values.
Standby mode:
By pressing the button (H1) after power on, the device can be put into standby mode. In
this mode, only the LED of the button (H1) is lit. All other displays are off. Except for the
button (H2), all buttons are inoperable.
Each test sieve is provided with an O-ring, which serves as a seal to prevent dust emission
during the sieving.
Weigh the sample and put it on the uppermost test sieve (biggest mesh size). Make sure not
to exceed the maximum feed quantity.
Place the complete sieve stack centrally on the device and clamp the sieve stack
( Chapter "Sieve Clamping Unit "economy" and "standard"" or "Sieve Clamping Unit
"comfort"").
Set the optimum amplitude value and sieving time ( Chapter "Controlling the Device").
Start the sieving process.
27
Operating the Device
After the end of the sieving process, weigh the individual test sieves and the collecting pan
including the particle size fractions present therein.
Determine the mass of the particle size fractions (weight after the sieving less the respective
empty weight).
28
Controlling the Device
H5
H4
H3 H2 H1
To start the sieving process in the setting mode, press the button (H2).
If the device is in standby mode, press the button (H2) twice to start the sieving
process.
The green LED lights up and the sieving process is started. If a process time has been set
beforehand, the time in the display "time" (H5) starts to count down on pressing the button.
29
Controlling the Device
By pressing the button, the sieving process stops, the red LED lights up and the green
LED of the button (H2) turns off.
Press the button (H1) a second time to put the device into standby mode.
The process time is stopped and the green LED of the button (H3) flashes.
7.5 Amplitude
The amplitude display (H4) shows the set amplitude value in %. The amplitude value is
adjustable between 1 % and 100 %. When the device is switched on, the last used amplitude is
preset.
Press the "+" or "-" button to set the desired amplitude.
Press and hold the "+" or "-" button to increase or decrease the amplitude in steps of 10 %,
respectively.
The amplitude can also be changed during operation by pressing the "+" or "-" button. An
exceeding or falling below of 1 % or 100 %, respectively is not possible.
NOTICE N14.0026
The set amplitude serves as a guide value, but cannot be taken as effectively reached
amplitude. Also, the set amplitude cannot be taken as a reproducibility aid. The effective
amplitude is displayed optically on the front face of the sieve plate (ST). The three vertical lines
mark the amplitude at 1, 2 and 3 mm. When the device is running, the intersection of the two
horizontal lines indicates the effective amplitude.
30
Controlling the Device
Only the amplitudes specified within the following load diagrams can be achieved. The
diagrams are to be seen as guidelines for the voltage rated on the type plate (M). Mains voltage
fluctuations or mains voltage deviations lead to increased tolerances. For physical reasons, the
60 Hz types have lower load capacities than the 50 Hz types.
31
Controlling the Device
Fig. 12: Load diagram for the sieve clamping units "economy" and "standard"
Fig. 13: Load diagrams for the sieve clamping unit "comfort"
32
Controlling the Device
The diagrams illustrate the amplitude "A" in millimetre in dependence of the load "g" (sieve
stack mass) in gramme. The tolerance of the sieve stack mass amounts ± 5 %. To increase the
load at a too low sieve stack mass and hence to reach the maximum amplitude, an add-on
weight of 2 100 g can be additionally mounted.
NOTICE Since for the AS 200 basic the amplitude highly depends on the weight of the load, it is
in general recommended to slowly ramp up the power in percent for each single sieving
process, until the optimum amplitude is reached. The best results are generally achieved with
amplitudes from 1.0 to 1.5 mm (optical display of the amplitude).
Example 1:
Type: 120 V; 60 Hz
Sieve stack mass: 1 500 g
Sieve clamping unit: "standard"
Add-on weight: no
Under these conditions the maximum attainable amplitude amounts ~ 0.7 mm.
Example 2:
Type: 230 V; 50 Hz
Sieve stack mass: 1 500 g
Sieve clamping unit: "comfort"
Add-on weight: no
Example 3:
Type: 230 V; 50 Hz
Sieve stack mass: 560 g
Sieve clamping unit: "comfort"
Add-on weight: yes
By using the add-on mass, the maximum attainable amplitude amounts 3 mm. Without the add-
on mass, the maximum attainable amplitude would only be ~ 1 mm.
7.6 Time
Fig. 14: Time setting for continuous operation (left) or with a process time (right)
The AS 200 basic can be operated either in continuous operation or for a certain time between
1 and 99 minutes. When the device is switched on, the last used setting is displayed.
33
Controlling the Device
Press the "+" or "-" button of the time display (H5) to set the desired process time.
Press and hold the "+" or "-" button to extend or reduce the process time in steps of ten
minutes, respectively.
To change to the continuous operation, fall below the duration of 1 min by pressing the "-"
button, or exceed the duration of 99 min by pressing the "+" button. The time display (H5)
now indicates " ".
The process time can also be changed during operation by pressing the "+" or "-" button.
With the AS 200 basic the amplitude is defined as the total lifting height (SH) of the test sieve.
For example, with a set amplitude of 1.2 mm, the test sieve is displaced in the range of -0.6 mm
and +0.6 mm around the zero point (= stationary sieve plate (ST)).
An optimum amplitude has been found, when a state of statistical resonance is being reached
during the sieving process. Then, the particles have the biggest probability of passing, as the
throw time of a particle corresponds to the oscillation period of the test sieve. In this case, the
particle (PA1) will be moved with a different orientation to a different mesh every time the test
sieve (SH) lifts. At too low amplitudes, the particles (PA2) do not lift off high enough from the
sieve mesh fabric, and are therefore not able to orientate freely and move freely over the sieve
mesh fabric. At too high amplitudes, the particles (PA3) are thrown up very high, and thus have
fewer opportunities to compare themselves with the sieve meshes. The best results are
generally achieved with amplitudes from 1.0 to 1.5 mm.
The optimum sieving time is in accordance with DIN 66165 achieved, if less than 0.1 % of the
feed quantity passes the test sieve after one minute of sieving duration. In practice, the
individual test sieves are weighed after the sieving process including the respective particle size
fraction. Then, the sieve stack is sieved again for one minute. The weights of the individual test
sieves of the second weighing must not differ substantially from those of the first weighing.
34
Controlling the Device
PA3
PA2
PA1
SH
Simultaneously press the button (H3) and the "-" button of the time display (H5).
The time display (H5) indicates "bS" (Betriebsstunden = operating hours) and the amplitude
display (H4) displays the complete runtime (corresponds to the accumulated sieving duration) of
the device in hhh format. All buttons, except for the button (H1) are now locked.
Press the button (H1) to exit the display of the operating hours.
Simultaneously press the button (H3) and the "+" button of the time display (H5).
The time display (H5) indicates "S" (software) and the amplitude display (H4) displays the
current number of the software version. All buttons, except for the button (H1) are now
locked.
Press the button (H1) to exit the display of the software version.
35
Wet Sieving
8 Wet Sieving
WARNING W6.0001
WARNING W7.0008
NOTICE N15.0049
The splash protection (SP) is supplied together with the wet sieving lid.
LS
SP
Fig. 16: Installing the splash protection
36
Wet Sieving
Loosen the two upper M4 oval-head screws (LS) on the backside of the AS 200 basic.
Slide the splash protection from below up behind the top edge of the housing.
Retighten the two upper M4 oval-head screws (LS).
For wet sieving, a liquid, preferably water, is supplied to the sample material during the sieving
process. A condition for wet sieving, however, is that the material to be sieved does not swell,
dissolve or otherwise change in the liquid. Wet sieving is particularly suitable for materials which
are already in suspension and may not be dried.
In addition to the test sieves, a collecting pan (AB1) with an outlet (AB2) and a wet sieving lid
(ND1) with spray nozzle (ND2) are required for wet sieving. During the sieving process liquid is
introduces via the spray nozzle (ND2) situated on top of the upper most test sieve into the sieve
stack and, subsequently, leaving it again together with the last fraction via the outlet (AB2) of
the collecting pan (AB1).
Position the device in the vicinity of the drain point (e.g. drain in the floor). The distance
between the outlet (AB2) and the drain point should not be too large.
Connect the spray nozzle (ND2) of the wet sieving lid (ND1) with the liquid supply (e.g. water
tap). The inner diameter of the hose must be 13 mm.
Connect the outlet (AB2) of the collecting pan (AB1) with the drain point or a corresponding
receptacle. The inner diameter of the hose must be 20 mm. Make sure that the drain point or
the receptacle are located below the collecting pan (AB1) and that the hose has a
continuous slope down.
37
Wet Sieving
ND2
ND1
AB2
AB1
Suspend the sample material in a beaker containing the liquid intended for the wet sieving.
To reduce the surface tension and to facilitate the screenings of the material later on, a few
drops of surfactant may be added.
Moisten each test sieve with the liquid intended for wet sieving.
Place the sieve stack with increasing mesh size on the collecting pan with outlet.
Place venting rings (ER) between test sieves of mesh size < 100 µm to avoid air cushions.
Place the complete sieve stack centrally on the device.
Enter the sample suspension on the uppermost test sieve with the clamping lid open.
Clamp the sieve stack ( Chapter "Sieve Clamping Unit "comfort"").
Set the optimum amplitude value and sieving time ( recommended parameters).
Start the sieving process.
Turn on the liquid supply. The quantity of liquid applied should only be of such amount that
the sieve mesh area is completely sprayed. A flow rate of 200 to 300 ml per sieve surface in
dm2 and minute is recommended (e.g. 0.5 to 1 litre per minute for sieve diameters of
200/203 mm).
The sieving process is considered as terminated when the exiting liquid shows no turbidity
anymore.
38
Wet Sieving
ER
If the smallest fraction, that leaves the collecting pan should also be weighted, it must be
appropriately collected. After the sieving process, the individual fractions are transferred on
suitable tared filters (paper filter) and dried in an oven at 80 °C until the weight remains
constant.
NOTICE Used test sieves must be cleaned immediately after the sieving process ( Chapter
"Cleaning of Test Sieves"). Depending on the sample material flash rust can form in the sieve
mesh fabric.
The load diagrams are invalid for the wet sieving. Due to the non-defined quantity of liquid in
the sieve stack, binding statements are not possible for the wet sieving.
39
Error Messages and Information Notes
40
Return for Service and Maintenance
The acceptance of devices and accessories of the Retsch GmbH for repair, maintenance or
calibration can only be effected, if the return form including the decontamination declaration
service has been correctly and fully completed.
Download the return form located in the download section "Miscellaneous" on the Retsch
GmbH homepage (http://www.retsch.com/downloads/miscellaneous/).
When returning a device, attach the return form to the outside of the packaging.
In order to eliminate any health risk to the service technicians, Retsch GmbH reserves the right
to refuse the acceptance and to return the respective delivery at the expense of the sender.
41
Cleaning, Wear and Maintenance
WARNING W8.0003
NOTICE N16.0009
Clean the housing of the device with a damp cloth and if necessary, with a household
cleaning agent. Pay attention that no water or cleaning agent enters the interior of the
device.
Before cleaning or drying the test sieves, the O-rings have to be removed. Before using and
after the cleaning the test sieves should be visibly inspected for possible damages and
impurities.
Near-mesh or clamped particles can be often removed dry after the sieving process by slightly
tapping the test sieve upside down with the sieve frame on a table. For test sieves with mesh
sizes > 500 µm a fine hair brush can be used to sweep over the outer side of the mesh fabric.
42
Cleaning, Wear and Maintenance
are thoroughly rinsed with water and dried. The cleaning with strong bases or acids is generally
not recommended.
Additional information concerning ultrasonic cleaning-baths and drying ovens can be found on
the Retsch GmbH homepage (http://www.retsch.com). Also ask for the free expert guide Sieve
Analysis – Taking a close look at quality.
NOTICE N17.0028
11.2 Wear
Even with the proper handling of the test sieves, a wearing of the sieve mesh fabric depending
on the frequency of the sieving operation and on the sample material is unavoidable. The test
sieves should be regularly checked for wear and damage and be replaced if necessary.
Likewise, all existing sealing gaskets should be checked for wear on a regular basis and
replaced if necessary.
CAUTION C11.0013
Personal injury
Improper repairs
This manual does not contain any repair instructions.
• For safety reasons, repairs may only be carried out by Retsch GmbH
or an authorised representative or by qualified service technicians.
11.3 Maintenance
The AS 200 basic is largely maintenance-free.
When using the sieve clamping unit "comfort" it is recommended to clean the support rods from
time to time. Furthermore, after a certain time the sieve clamping unit "comfort" produces
unavoidable, function-related clamping grooves on the support rods, which may impede secure
clamping. Therefore, it is necessary to examine the support rods in regularly intervals for
clamping grooves in the clamping area and, if required, to turn them by 90°.
Loosen the hexagonal nut (G) by means of a 19 mm open-end wrench.
Turn the support rod by 90°.
Then, tighten the hexagonal nut again.
43
Cleaning, Wear and Maintenance
If the rotation of the support rods does not expose a clamping groove free area, the support
rods should be replaced.
If wet sieving is executed, a quarterly examination for tightness of the fluid hoses should be
performed.
WARNING W9.0014
NOTICE Depending on the mains supply different fuses are used. The correct electrical
protection is listed on the type plate (M).
Voltage Fuse
100 – 120 V 5 A delay-action
200 – 240 V 4 A delay-action
Two fuses are located in the fuse drawer (L) on the backside of the device. Fuses can be
replaced by trained qualified personnel.
Remove the fuse drawer by pressing the latch on the bottom side of the fuse drawer.
Replace the defective fuse in the fuse drawer.
Slide the fuse drawer back in again, until is audibly locks in place.
44
Accessories
12 Accessories
Information on available accessories as well as the respective manuals are accessible directly
on the Retsch GmbH homepage (http://www.retsch.com) under the heading "Downloads" of the
device.
Information on wear parts and small accessories can be found in the Retsch GmbH general
catalogue also available on the homepage.
In case of any questions concerning spare parts please contact the Retsch GmbH
representative in your country, or Retsch GmbH directly.
The different versions of the test sieves of Retsch GmbH are supplied in accordance with all
current national and international standards:
available standards: DIN, ISO, ASTM, BS, NF, CGSB
available diameters: 100 mm / 150 mm / 200 mm / 203 mm (8") / 305 mm (12") /
400 mm / 450 mm (18")
available sieve surfaces: sieve mesh fabric (20 µm to 125 mm) and perforated screens
(round, elongated or square holes) of stainless steel
on request with an individual test certificate for the inspection of measuring and testing
equipment monitoring according to ISO 9000 ff.
Among the various test sieves matching collecting pans, collecting pans with outlet,
intermediate pans, intermediate rings, venting rings and sieve lids are available.
12.1.1 Certificate
Before delivery, each test sieve is optically surveyed according to the standards DIN ISO
3310-1 and ASTM E 11, and provided a certificate of compliance with the order.
45
Accessories
On request, an additional acceptance test certificate with a calibration protocol can be provided,
documenting the measurement results in tabular and graphical form, hence representing a
calibration certificate with more detailed statistics.
NOTICE N18.0027
By electrostatic and Van-der-Waals forces, as well as by fluid bridges, single particles can
combine to form agglomerates. Since in this case not the individual primary particles, but
particle collectives are measured, there is a distortion of the particle size distribution (a higher
coarse fraction results). In order to prevent the formation of agglomerates or dissolve them,
sieving aids can be used.
NOTICE For very soft sample material, an undesired crushing of primary particles might occur.
Solid additives:
Solid additives, such as talcum or Aerosil® can be admixed to fatty, moist, sticky or oily sample
materials. They attach themselves to the particle surface and counteract the formation of
agglomerates. Their particle size is so small that they have no sustainable influence to the
actual particle size analysis of the sample material. However, the measurement results will be
distorted depending on the added amount of additive.
46
Accessories
47
Disposal
13 Disposal
In the case of a disposal, the respective statutory requirements must be observed. In the
following, information on the disposal of electrical and electronic devices in the European
Community are given.
Within the European Community the disposal of electrically operated devices is regulated by
national provisions that are based on the EU Directive 2012/19/EU on Waste Electrical and
Electronic Equipment (WEEE).
Accordingly, all devices supplied after August 13th 2005 in the business-to-business area, to
which this product is classified, may no longer be disposed of with municipal or household
waste. To document this, the devices are provided with the disposal label.
Since the disposal regulations worldwide and also within the EU may differ from country to
country, the supplier of the device should be consulted directly in case of need.
This labelling obligation is applied in Germany since March 23rd 2006. From this date on, the
manufacturer must provide an adequate possibility of returning all devices delivered since
August 13th 2005. For all devices delivered before August 13th 2005 the end user is responsible
for the proper disposal.
48
Index
14 Index
49
Index
50
Index
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53
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Copyright
© Copyright by
Retsch GmbH
Retsch-Allee 1-5
42781 Haan
Germany