Fritsch PULVERISETTE 7 User manual

PLANETARY MICRO MILL
PULVERISETTE 7 classic line
Operang instrucons
Valid starng with: 07.4000/0487
Read the instrucons prior to performing any task!
Translaon of the original operang instrucons

Version 03/2014 Index 011
Fritsch GmbH
Milling and Sizing
Industriestraße 8
D - 55743 Idar-Oberstein
Telephone: [phone]
Fax: [phone]
Email: inf[email protected]
Internet: www.fritsch.de

Cercaons and CE conformity
Fritsch GmbH has been cered by the TÜV-Zerzierungsgemeinscha
e.V.
An audit cered that Fritsch GmbH conforms to the requirements of the
DIN EN ISO 9001:2008.
The enclosed Conformity Declaraon lists the guidelines the FRITSCH
instrument conforms to, to be able to bear the CE mark.
Cercaon
CE Conformity
Cercaons and CE conformity
- 3 -

Table of contents
1Basic structure............................................................................... 6
2 Safety informaon and use........................................................... 7
2.1 Requirements for the user..................................................... 7
2.2 Scope of applicaon............................................................... 7
2.2.1 Operang principle............................................................. 8
2.2.2 Drive motor and speed regulaon...................................... 8
2.3 Obligaons of the operator.................................................... 8
2.4 Informaon on hazards and symbols used in this manual..... 9
2.5 Device safety informaon.................................................... 12
2.6 Protecve equipment.......................................................... 13
2.6.1 Opening the hood without mains connecon.................. 13
2.6.2 Imbalance switch.............................................................. 14
2.7 Hazardous points................................................................. 16
2.8 Electrical safety.................................................................... 16
2.8.1 General informaon.......................................................... 16
2.8.2 Protecon against restart................................................. 16
2.8.3 Overload protecon.......................................................... 16
2.8.4 Imbalance detecon......................................................... 17
3 Technical data.............................................................................. 18
3.1 Dimensions.......................................................................... 18
3.2 Weight.................................................................................. 18
3.3 Operang noise.................................................................... 18
3.4 Voltage................................................................................. 18
3.5 Current consumpon........................................................... 18
3.6 Power consumpon............................................................. 18
3.7 Electrical fuses..................................................................... 19
3.8 Material................................................................................ 19
3.9 Final neness....................................................................... 19
4Installaon................................................................................... 20
4.1 Transport.............................................................................. 20
4.2 Unpacking............................................................................ 20
4.3 Seng up............................................................................. 21
4.4 Ambient condions.............................................................. 21
4.5 Electrical connecon............................................................ 22
4.5.1 Adjusng the mains voltage.............................................. 23
4.5.2 Seng device specicaon in setup mode....................... 25
5Inial start-up.............................................................................. 26
5.1 Switching on......................................................................... 26
5.2 Funcon check..................................................................... 26
5.3 Switching o........................................................................ 27
Table of contents
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6 Using the device........................................................................... 28
6.1 Choice of grinding bowls and grinding balls......................... 28
6.1.1 Size of the grinding balls................................................... 30
6.1.2 Number of balls per grinding bowl (independent of the
material quanty)............................................................. 30
6.1.3 Calculated weight of a ball................................................ 31
6.2 Filling quanes of grinding bowls...................................... 31
6.3 Filling the grinding bowl....................................................... 32
6.4 Factors with an impact on grinding...................................... 32
6.4.1 Running me (grinding duraon)...................................... 32
6.4.2 Speed................................................................................ 32
6.4.3 Reverse mode................................................................... 32
6.4.4 Number and size of the balls............................................. 32
6.4.5 Weight of the balls (type of material)............................... 33
6.4.6 Dry grinding....................................................................... 33
6.4.7 Wet grinding (grinding in a suspension)........................... 33
6.5 Clamping the grinding bowls................................................ 34
6.5.1 Clamping with the spindle clamping device (5)................ 34
6.6 Mass balance....................................................................... 34
6.7 Grinding duraon................................................................. 35
6.8 Seng the speed................................................................. 36
6.9 Seng the running me...................................................... 37
6.9.1 Changing the me unit in setup mode.............................. 37
6.10 Reverse mode.................................................................... 38
6.11 Repeon of grinding / pause cycles................................. 38
6.12 Conducng a grinding operaon....................................... 39
6.12.1 Overload......................................................................... 39
6.12.2 Switching o................................................................... 39
6.13 Cooling the grinding bowl.................................................. 39
6.14 Stand-by............................................................................. 40
7 Cleaning........................................................................................ 41
7.1 Grinding elements................................................................ 41
7.2 Mill....................................................................................... 42
8 Maintenance................................................................................ 43
9 Repairs......................................................................................... 45
9.1 Checklist for troubleshoong............................................... 45
10 Disposal........................................................................................ 47
11 Guarantee terms.......................................................................... 48
12 Exclusion of liability..................................................................... 50
13 Safety logbook............................................................................. 52
14 Index............................................................................................. 53
Table of contents
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1 Basic structure
1 Hood handle
2 Latch
3 Hood
4 Membrane keyboard
5 Spindle clamping device
6 Lock
7 Voltage rotary switch
8 Main switch
9 Mains connecon
10 Device fuse 2x 10 A T
11 RS232 - interface
12 Support disc
Basic structure
- 6 -

2 Safety informaon and use
2.1 Requirements for the user
This operang manual is intended for persons assigned with operang
and monitoring the Fritsch PULVERISETTE 7 classic line. The operang
manual and especially its safety instrucons are to be observed by all
persons working on or with this device. In addion, the applicable rules
and regulaons for accident prevenon at the installaon site are to be
observed. Always keep the operang manual at the installaon site of
the PULVERISETTE 7 classic line.
People with health problems or under the inuence of medicaon,
drugs, alcohol or exhauson must not operate this device.
The PULVERISETTE 7 classic line may only be operated by authorised per-
sons and serviced or repaired by trained specialists. All commissioning,
maintenance and repair work may only be carried out by technically
qualied personnel. Qualied personnel are persons who, because of
their educaon, experience and training as well as their knowledge of
relevant standards, regulaons, accident prevenon guidelines and oper-
ang condions, are authorised by those responsible for the safety of the
machine to carry out the required work and are able to recognize and
avoid possible hazards as dened for skilled workers in IEC 364.
In order to prevent hazards to users, follow the instrucons in this
manual.
Malfuncons that impair the safety of persons, the PULVERISETTE 7
classic line or other material property must be reced immediately. The
following informaon serves both the personal safety of operang per-
sonnel as well as the safety of the products described and any devices
connected to them: All maintenance and repair work may only be per-
formed by technically qualied personnel.
This operang manual is not a complete technical descripon. Only the
details required for operaon and maintaining usability are described.
Fritsch has prepared and reviewed this operang manual with the
greatest care. However, no guarantee is made for its completeness or
accuracy.
Subject to technical modicaons.
2.2 Scope of applicaon
The micro mill, PULVERISETTE 7 classic line, can be applied universally for
fast dry and wet grinding of inorganic and organic samples for analysis,
quality inspecon or material tesng.
During synthesis, the planetary micro mill is used for mixing and homoge-
nising dry samples, emulsions or suspensions.
Safety informaon and use
- 7 -

2.2.1 Operang principle
The grinding stock is crushed and ground by grinding balls in a grinding
bowl. The centrifugal forces from the rotaon of the grinding bowls
around their own axis and from the rotang support disc act on the con-
tents of the grinding bowl which consists of grinding stock and grinding
balls.
The grinding bowl and the support disc have opposite direcons of rota-
on, so that the centrifugal forces alternate in the same direcon and in
the opposite direcon. The result is that the grinding balls run down the
inside of the bowl's wall providing a fricon eect and the grinding balls
hit the opposite wall of the grinding bowl providing an impact eect. The
impact eect is amplied by the impact of the grinding balls against each
other.
aRotaon of the grinding bowl
b Centrifugal force
c Support disc movement
2.2.2 Drive motor and speed regulaon
A maintenance-free three-phase motor operated via a frequency con-
verter is used as the drive.
2.3 Obligaons of the operator
Before using the PULVERISETTE 7 classic line, this manual is to be care-
fully read and understood. The use of the PULVERISETTE 7 classic line
requires technical knowledge; only commercial use is permied.
The operang personnel must be familiar with the content of the oper-
ang manual. For this reason, it is very important that these persons
actually receive the present operang manual. Ensure that the operang
manual is always near the device.
The PULVERISETTE 7 classic line may exclusively be used within the scope
of applicaons set down in this manual and within the framework of
guidelines put forth in this manual. In case of non-compliance or
improper use, the customer assumes full liability for the funconal capa-
bility of the PULVERISETTE 7 classic line and for any damage or injury
arising from failure to full this obligaon.
Safety informaon and use
- 8 -

By using the PULVERISETTE 7 classic line the customer agrees with this
and recognizes that defects, malfuncons or errors cannot be completely
excluded. To prevent risk of damage to persons or property or of other
direct or indirect damage, resulng from this or other causes, the cus-
tomer must implement sucient and comprehensive safety measures for
working with the PULVERISETTE 7 classic line.
Neither compliance with this manual nor the condions and methods
used during installaon, operaon, use and maintenance of the PULVERI-
SETTE 7 classic line can be monitored by Fritsch GmbH. Improper execu-
on of the installaon can result in property damage and thus endanger
persons. Therefore, we assume absolutely no responsibility or liability for
loss, damage or costs that result from errors at installaon, improper
operaon or improper use or improper maintenance or are in any way
connected to these.
The applicable accident prevenon guidelines must be complied with.
Generally applicable legal and other obligatory regulaons regarding
environmental protecon must be observed.
2.4 Informaon on hazards and symbols used in this manual
Safety informaon in this manual is designated by symbols. Safety infor-
maon is introduced by keywords that express the extent of the hazard.
DANGER!
This symbol and keyword combinaon points out a
directly hazardous situaon that can result in death or
serious injury if not avoided.
WARNING!
This symbol and keyword combinaon points out a pos-
sibly hazardous situaon that can result in death or
serious injury if not avoided.
CAUTION!
This symbol and keyword combinaon points out a pos-
sibly hazardous situaon that can result in slight or
minor injury if not avoided.
Safety informaon
Safety informaon and use
- 9 -

NOTICE!
This symbol and keyword combinaon points out a pos-
sibly hazardous situaon that can result in property
damage if not avoided.
ENVIRONMENT!
This symbol and keyword combinaon points out a pos-
sibly hazardous situaon that can result in environ-
mental damage if not avoided.
To call aenon to specic hazards, the following symbols are used in the
safety informaon:
DANGER!
This symbol and keyword combinaon points out a
directly hazardous situaon due to electrical current.
Ignoring informaon with this designaon will result in
serious or fatal injury.
DANGER!
This symbol and keyword combinaon designates con-
tents and instrucons for proper use of the machine in
explosive areas or with explosive substances. Ignoring
informaon with this designaon will result in serious
or fatal injury.
DANGER!
This symbol and keyword combinaon designates con-
tents and instrucons for proper use of the machine
with combusble substances. Ignoring informaon with
this designaon will result in serious or fatal injury.
WARNING!
This symbol and keyword combinaon points out a
directly hazardous situaon due to movable parts.
Ignoring informaon with this designaon can result in
hand injuries.
Special safety informaon
Safety informaon and use
- 10 -

WARNING!
This symbol and keyword combinaon points out a
directly hazardous situaon due to hot surfaces.
Ignoring informaon with this designaon can result in
serious burn injuries due to skin contact with hot sur-
faces.
Safety informaon can refer to specic, individual procedure instruc-
ons. Such safety informaon is embedded in the procedure instrucons
so that the text can be read without interrupon as the procedure is
being carried out. The keywords described above are used.
Example:
1. Loosen screw.
2.
CAUTION!
Risk of entrapment at the lid.
Close the lid carefully.
3. Tighten screw.
This symbol emphasises useful ps and recommenda‐
ons as wells as informaon for ecient operaon
without malfuncon.
To emphasise procedure instrucons, results, lists, references and other
elements, the following designaons are used in this manual:
Designaon Explanaon
1., 2., 3. ...
Step-by-step procedure instrucons
ðResults of steps in the procedure
References to secons in this manual and rele-
vant documentaon
Lists without a specic order
Safety informaon in the procedure
instrucons
Tips and recommendaons
Further designaons
Safety informaon and use
- 11 -

Designaon Explanaon
[Buon] Operang elements (e.g. push buon, switch),
display elements (e.g. signal lamps)
„Display“ Screen elements (e.g. buons, funcon key
assignment)
2.5 Device safety informaon
nOnly use original accessories and original spare parts. Failure to
observe this instrucon can compromise the safety of the machine.
nAccident-proof conduct is to be strictly followed during all work.
nComply with all currently applicable naonal and internaonal acci-
dent prevenon guidelines.
CAUTION!
Wear hearing protecon!
If a noise level of 85 dB(A) is reached or exceeded, ear
protecon should be worn to prevent hearing damage.
WARNING!
The maximum accepted concentraon (MAC) levels of
the relevant safety guidelines must be observed; if nec-
essary, venlaon must be provided or the machine
must be operated under an extractor hood.
DANGER!
Explosion hazard!
– When grinding oxidizable substances, e.g. metals or
coal, there is a risk of spontaneous combuson
(dust explosion) if the share of ne parcles
exceeds a certain percentage. When grinding these
kinds of substances, special safety measures must
be taken and the work must be supervised from a
specialist.
– The PULVERISETTE 7 classic line is not explosion
protected and is not designed to grind explosive
materials.
nDo not remove the informaon signs.
Please observe!
Safety informaon and use
- 12 -

NOTICE!
Immediately replace damaged or illegible informaon
signs.
nUnauthorised alteraon of the PULVERISETTE 7 classic line will void
Fritsch's declaraon of conformity to European direcves and void
the guarantee.
nOnly use the PULVERISETTE 7 classic line when it is in proper working
order, as intended and in a safety- and hazard-conscious manner
adhering to the operang manual. In parcular, immediately recfy
any malfuncons that could pose a safety hazard.
nIf, aer reading the operang manual, there are sll quesons or
problems, please do not hesitate to contact our specialised per-
sonnel.
2.6 Protecve equipment
Protecve equipment must be used as intended and
may not be disabled or removed.
All protecve equipment must be checked regularly for
integrity and proper funconing.
For start-up, the hood (3) has to be closed.
The hood (3) is locked:
nwithout mains connecon
nduring operaon
The hood (3) can only be opened if the mill's drive is at a
standsll.
2.6.1 Opening the hood without mains connecon
CAUTION!
The emergency release must not be acvated while the
machine is running! Disconnect the machine from the
mains before the emergency release. Failure to observe
this will render void the guarantee, and releases us
from liability for any resulng damage to the device as
well as for any resulng personal injury.
Safety informaon and use
- 13 -

1. Insert the included triangular key (A) into the bore hole on the
boom side of the PULVERISETTE 7 classic line and turn it to the
right.
2. Unlock the latch (2) by turning it.
3. Pull the hood (3) up to open it.
4. The mill can only be switched on again if the hood (3) is closed and
the safety lock (7) has been enabled again by turning the triangular
key to the right.
2.6.2 Imbalance switch
The device switches o if there is excessive imbalance. In this case the
second grinding bowl has to be lled accordingly.
NOTICE!
The maximum permissible weight dierence is about
70 g for long-term loading; 100 g is permissible for
short-term loading.
CAUTION!
The imbalance switch can be disabled at your own risk.
The Fritsch company will give no guarantee for damage
resulng from disabling of the imbalance switch.
NOTICE!
Change these sengs only aer all work as described in
Ä Chapter 4 „Installaon“ on page 20 has been carried
out!
In the factory seng, the imbalance switch is acvated!
Acvaon / deacvaon of the imbalance switch in setup mode:
Safety informaon and use
- 14 -

1. Press and hold the STOP buon on the control panel (4).
2. Switch on the device with the main switch (8) on the back of the
device, and release the STOP buon.
3. If POWER SUPPLY is ashing, the device is in setup mode. If POWER
SUPPLY is not ashing, repeat the procedure.
4.
NOTICE!
In the display above the right "-" buon (x) in the
TIMER eld, there must be a minus sign. This
indicates that the imbalance switch has been
acvated, prevenng the device from shiing
posion and any resulng damage to the device.
Safety informaon and use
- 15 -

5. To save and exit setup mode, press the STOP buon.
2.7 Hazardous points
CAUTION!
– Crushing hazard when closing the hood (3).
–Crushing hazard at the spindle clamping device (5).
2.8 Electrical safety
2.8.1 General informaon
nThe main switch (8) separates the device from the mains on two
poles.
nSwitch o the main switch (8) if the planetary micro mill will be idle
for an extended period of me (e.g. overnight).
2.8.2 Protecon against restart
If a power failure occurs during operaon or if the device is switched o
with the main switch (8), the hood (3) is locked. The hood lock (6) is
automacally released when the power returns. For safety reasons, how-
ever, the mill does not restart.
2.8.3 Overload protecon
nIn the event of an overload, the device reduces the speed in a con-
trolled manner. The REDUCED SPEED light is lit as a warning. The
device can be used again with the reduced speed.
nThe device switches o if the drive motor becomes too hot.
nThe device switches o if the drive is blocked. (See
Ä Chapter 9
„Repairs“ on page 45)
Safety informaon and use
- 16 -

2.8.4 Imbalance detecon
The device switches o if there is excessive imbalance. (See
Ä Chapter 9
„Repairs“ on page 45)
Safety informaon and use
- 17 -

3 Technical data
3.1 Dimensions
500 x 370 x 530 mm (height x width x depth)
3.2 Weight
Net: approx. 35 kg
Gross: approx. 55 kg
3.3 Operang noise
Emissions value of workplace according to DIN EN ISO 3746:2005 is up to
96dB (A). The value uctuates strongly, depending on the speed, the
grinding stock and the type of grinding bowl and grinding balls.
3.4 Voltage
The device can be operated in two voltage ranges:
nSingle phase alternang current 100 - 120 V ± 10%, and,
nSingle phase alternang current 200 - 240 V ± 10%.
(See also
Ä Chapter 4 „Installaon“ on page 20)
Transient overvoltages in accordance with overvoltage category II are
permied.
3.5 Current consumpon
Depending on the mains voltage, the maximum current consumpon is
in the ranges:
n115 V ® 8.8 A
n230 V ® 3.7 A
3.6 Power consumpon
Depending on the voltage range, the maximum power consumpon is
approx. 880 W.
Technical data
- 18 -

3.7 Electrical fuses
Device fuse (10): 5 x 20 A T
Micro-fuse 10 A T in the frequency converter
3.8 Material
nMaximum feeding size 5 mm
nMaximum feed amount 2 x 20 ml
3.9 Final neness
nDry grinding up to d50 < 20 µm (depending on the material)
nWet grinding up to d50 < 1 µm (depending on the material)
Technical data
- 19 -

4 Installaon
4.1 Transport
The device is delivered on a transport pallet with a wooden cover. We
recommend using a forkli or pallet truck for transporng the packed
device.
DANGER!
Do not step under the transport pallet during transport.
WARNING!
Improper liing can lead to personal injury or property
damage. The machine is only to be lied with suitable
equipment and by qualied personnel.
The guarantee excludes all claims for damage due to improper transport.
4.2 Unpacking
nRemove the nails that fasten the wooden hood to the transport
pallet.
nLi the hood o the transport pallet.
nThe pre-perforated segments can be detached so that the foam parts
can be removed more easily.
nPlease store the transport packaging so that it can be reused if you
need to return the product. Fritsch GmbH accepts no liability for
damage caused by improper packaging (packaging that is not from
Fritsch).
nCompare the contents of the delivery with your order.
Grinding bowls made of hardened steel may have
recesses on the surface caused during producon. They
do not have an impact on grinding or the grinding
results and usually disappear aer the rst grinding
operaon.
These recesses on the surface, if present, are within the
range of the permissible producon tolerances. Com‐
plaints relang to such grinding bowls therefore cannot
be accepted.
Installaon
- 20 -