Operation Manual
Wet Digester B-440
096791 en
Table of contents
Table of contents
1 About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 User qualification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Proper use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Improper use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Safety warnings and safety signs used in this manual . . . . . . . . . . . . . . . . . . 7
2.5 Product safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5.1 General hazards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5.2 Warning labels on housing and assemblies . . . . . . . . . . . . . . . . . . . . . . 10
2.5.3 Personal protective equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5.4 Built-in safety elements and measures . . . . . . . . . . . . . . . . . . . . . . . . 11
2.6 General safety rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Materials used. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4 Description of function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1 Functional principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 Putting into operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1 Installation site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.3 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.3.1 System behaviour at power outage . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.1 Operating controls and housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.2 Preparing for use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2.1 Filling of the condensate trap (optional) . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2.2 Installing the vitrified ceramic plate . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.2.3 Installing the glass hood. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.3 Setting up application parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.4 How to perform a wet application . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.5 Finishing an application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3 Optimization principle for ashing programs . . . . . . . . . . . . . . . . . . . . . . 26
7 Maintenance and repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.1 Customer service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.2 General inspection and cleaning instructions . . . . . . . . . . . . . . . . . . . . . 28
7.2.1 Additional cleaning instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.2.2 Liquid ingress into the instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.5 Reflector exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.1 Malfunctions and their remedy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.1.1 Heating performance test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9 Shutdown, storage, transport and disposal . . . . . . . . . . . . . . . . . . . . . . . . 32
9.1 Storage and transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9.2 Disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3 B-440 Operation Manual, Version D
Table of contents
10 Spare parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
10.1 Scope of application and delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
10.2 Spare parts, optional accessories and consumables . . . . . . . . . . . . . . . . . 35
11 Declarations and requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
11.1 FCC requirements (for USA and Canada) . . . . . . . . . . . . . . . . . . . . . . . 39
11.2 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4 B-440 Operation Manual, Version D
1 About this manual
This manual describes the Wet Digester B-440 and provides all information required for its safe operation and to maintain it in good working order.
It is addressed to laboratory personnel and operators in particular.
Read this manual carefully before installing and running your system and note the safety precautions
in section 2 in particular. Store the manual in the immediate vicinity of the instrument, so that it can be
consulted at any time.
No technical modifications may be made to the instrument without the prior written agreement of
Buchi. Unauthorized modifications may affect the system safety or result in accidents. Technical data
are subject to change without notice.
NOTE
The symbols pertaining to safety (WARNINGS and ATTENTIONS) are explained in section 2.
1 About this manual
This manual is copyright. Information from it may not be reproduced, distributed or used for competitive purposes, nor made available to third parties. The manufacture of any component with the aid of
this manual without prior written agreement is also prohibited.
The English manual is the original language version and serves as basis for all translations into
other languages. If you need another language version of this manual, you can download available
versions at www.buchi.com.
5 B-440 Operation Manual, Version D
2 Safety
This section introduces the safety concept of the instrument and contains general rules of behavior
and warnings from direct and indirect hazards concerning the use of the product.
For the users safety, all safety instructions and safety messages in the individual sections shall
be strictly observed and followed. Therefore, the manual must always be available to all persons
performing any tasks described herein.
2.1 User qualification
The instrument may only be used by laboratory personnel and other persons who on account of
training and professional experience know the potential dangers that can develop when operating the
instrument.
Untrained personnel, or persons who are currently being trained, require careful supervision by a
qualified person. This Operation Manual serves as a basis for training.
2 Safety
2.2 Proper use
The equipment is designed and built as laboratory equipment. It serves to heat up organic
compounds with acids/peroxides for the wet digestion applications. It is also capable to perform dry
ashing at high temperatures.
A Scrubber (e.g. Scrubber B-414) has to be connected to the glass hood to safely withdraw and
neutralize fumes which will emerge during digestion. In any case, all exhausts and fumes leaving the
system or assemblies such as the Scrubber have to be withdrawn instantly by a fume hood. This is
mandatory to remove all possibly hazardous substances (e.g. acid fumes) from the working area. The
ventilation system of the fume hood has to be equipped with safety measures such as outlet filters to
avoid contamination of the environment.
When the Wet Digester B-440 is used in combination with other instruments (e.g. Scrubber and fume
hood) all related manuals are to be fully observed.
2.3 Improper use
Any other use than the one stated above and any application that does not comply with the technical
data is considered to be improper use. Improper use can cause hazardous situations for the operator
and / or for the instrument and might cause consequential property damage.
The operator bears the sole risk for any damages or hazards caused by improper use!
In particular, the following uses shall not be permitted
Installation or use of the instrument in rooms, which require ex-protected instruments.s
Use of samples which can explode or ignite due to shocks, friction, heat or sparks.s
The use of spare parts or accessories other than those mentioned in these operating instructions.s
The equipment may not be operated using combustible substances.s
6 B-440 Operation Manual, Version D
2.4 Safety warnings and safety signs used in this manual
DANGER, WARNING, CAUTION and NOTICE are standardized signal words for identifying levels of
hazards and risks related to personal injury and property damage. All signal words, which are related
to personal injury are accompanied by the general safety sign.
For your safety it is important to read and fully understand the table below with the different signal
words and their defi nitions!
Sign Signal word Defi nition Risk level
DANGER
Indicates a hazardous situation which, if not avoided, will result in
death or serious injury.
2 Safety
★★★★
WARNING
CAUTION
NOTICE
no
Supplementary safety information symbols may be placed in a rectangular panel on the left to the
signal word and the supplementary text (see example below).
Space for
supplementary
safety
information
symbols.
Table of supplementary safety information symbols
The reference list below incorporates all safety information symbols used in this manual and their
meaning.
Symbol Meaning
Indicates a hazardous situation which, if not avoided, could result
in death or serious injury.
Indicates a hazardous situation which, if not avoided, may result
in minor or moderate injury.
Indicates possible property damage, but no
practices related to personal injury.
!
SIGNAL WORD
Supplementary text, describing the kind and level of hazard / risk seriousness.
List of measures to avoid the herein described, hazard or hazardous situation.s
...s
...s
★★★☆
★★☆☆
★☆☆☆
(property damage only)
General warning
Electrical hazard
Heavy weight, avoid over exertion
Explosive gases, explosive environment
7 B-440 Operation Manual, Version D
Symbol Meaning
Fire hazard
Harmful to life-forms
Hot item, hot surface
Device damage
2 Safety
Inhalation of substances
Chemical burns by corrosives
Fragile components
Wear laboratory coat
Wear protective goggles
Wear protective gloves
Additional user information
Paragraphs starting with NOTE transport helpful information for working with the device / software or
its supplementaries. NOTEs are not related to any kind of hazard or damage (see following example).
NOTE
Useful tips for the easy operation of the instrument / software.
8 B-440 Operation Manual, Version D
2.5 Product safety
The Wet Digester B-440 has been designed and built in accordance with current state-of-the-art technology, at the time of development. Safety warnings in this manual (as described in section 2.4) serve
to make the user alert to and avoid hazardous situations emanating from residual dangers by giving
appropriate counter measures.
However, risks to users, property and the environment can arise when the instrument is damaged,
used carelessly or improperly.
2.5.1 General hazards
The following safety messages show hazards of general kind which may occur when handling the
instrument. The user shall observe all listed counter measures in order to achieve and maintain the
lowest possible level of hazard.
Additional warning messages can be found whenever actions and situations described in this manual
are related to situational hazards.
2 Safety
!
DANGER
Death or serious injuries by use in explosive environments.
Do not store or operate the instrument in explosive environmentss
Remove all sources of flammable vaporss
Do not store chemicals in the vicinity of the devices
Operate and maintain the device in a fume hood with sufficient ventilation to directly withdraw s
fumes
!
CAUTION
Risk of minor or moderate cuts by sharp edges.
Do not touch defective or broken glassware with bare handss
Do not touch thin metal edgess
Risk of instrument damage by liquids or mechanical shocks.
NOTICE
Do not spill liquids over the instrument or its componentss
Do not move the instrument when it is loaded with sample materials
Do not drop the instrument or its componentss
Keep external vibrations away from the instruments
Do not operate the instrument without insulation panels and reflectors
9 B-440 Operation Manual, Version D
2.5.2 Warning labels on housing and assemblies
The following warning sticker(s) can be found on the housing or assemblies of the Wet Digester:
Symbol Meaning Location
Do not touch hot item, hot surface! Sticker / label, located at the glass hood
Wear protective goggles Sticker / label, located at the glass hood
Wear protective gloves Sticker / label, located at the glass hood
2 Safety
2.5.3 Personal protective equipment
Always wear personal protective equipment such as protective eye goggles, protective clothing and
gloves. The personal protective equipment must meet all requirements of all data sheets for the chemicals used. These instructions are an important part of the Wet Digester B-440 and must be made
available at all times to the operating personnel at the place where the equipment is deployed. This
also applies to additional language versions of these instructions, which can be reordered separately.
!
WARNING
Serious chemical burns by corrosives.
Observe all data sheets of the used chemicalss
Handle corrosives in well ventilated environments onlys
Always wear protective goggless
Always wear protective glovess
Always wear protective clothess
Do not use damaged glasswares
10 B-440 Operation Manual, Version D
2.5.4 Built-in safety elements and measures
Buchi glassware design
All original Buchi digestion glassparts are made of high temperature and chemical resistant borosili-s
cate glass.
Acid fumes generated during digestion accumulate in the glass hoods
The fumes must be safely withdrawn from the glass hood by a Scrubber (e.g. Scrubber B-414) s
with sufficient suction flow.
Heater
The device is inherently safe due to its limited heating power. In case of a faulty heating circuit, the
device cannot overheat.
2.6 General safety rules
Responsibility of the operator
The head of the laboratory is responsible for training his/her personnel.
The operator shall inform the manufacturer without delay of any safety-related incidents which might
occur during operation of the instrument or its accessories. Legal regulations, such as local, state and
federal laws applying to the instrument or its accessories must be strictly followed.
2 Safety
Duty of maintenance and care
The operator is responsible for the proper condition of instrument. This includes maintenance, service
and repair jobs that are performed and on schedule by authorized personnel only.
Spare parts to be used
Use only genuine consumables and spare parts for maintenance to assure good system performance,
reliability and safety. Any modifications of spare parts or assemblies are only allowed with the prior
written permission of the manufacturer.
Modifications
Modifications to the instrument are only permitted after prior consultation and with the written approval
of the manufacturer. Modifications and upgrades shall only be carried out by an authorized Buchi technical engineer. The manufacturer will decline any claim resulting from unauthorized modifications.
11 B-440 Operation Manual, Version D
3 Technical data
This section introduces the reader to the Wet Digester and its specifications. It contains the technical
data, requirements and performance data.
3.2 Technical data
Technical data
Power consumption max. 1200 W
Integrated power outlet socket for Srubber B-414 max. load 100 W
Temperature control range 0 – 600°C (working range starts at ambient temp.)
Connection voltage 220 – 240 VAC ± 10% (1P, N, G)
Input fuse (internal) T 100mA L 250 V
Frequency 50 / 60 Hz
IP degree of protection (two digits) IP 20
3 Technical data
Explanation of protection level:
2 Protection provided by the enclosure against access
to hazardous parts (e.g., electrical conductors,
moving parts) and the ingress of solid foreign objects
with a diameter of > 12,5 mm.
0 No protection of the equipment inside the enclosure
against harmful ingress of water.
Overvoltage category II
Environmental conditions:
Pollution degree 2 (for indoor use only)
Temperature 5 – 40 °C
Altitude (above sea level) up to 2000 m
Humidity (curve parameter) Maximum relative humidity 80% up to 31 °C, then
decreasing linearly to 50% relative humidity at 40 °C
Dimensions in mm (W × D × H) 470 × 290 × 370
Net weight 12 kg
NOTE
Technical data of accessory instruments can be found in the respective operation manual!
12 B-440 Operation Manual, Version D
3.3 Materials used
Materials used
Component Material designation Material code Hazardous substances
3 Technical data
Steel, powder-coated with
polyester-epoxide
Halogen bulb Heating element —
Aluminium Reflector AL —
Borosilicate glass 3.3 All glass parts DIN/ISO 3585 —
Vitrified ceramic Plate —
Housing 1.0330
—
13 B-440 Operation Manual, Version D
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