Hygienic Instruction
EHEDG, Installation and
Cleaning Instructions
VEGAVIB VB61, VB63
Hygienic process fittings
Document ID: 35483
Contents
Contents
1 About this document................................................................................................................ 3
1.1Function............................................................................................................................ 3
1.2Scope................................................................................................................................ 3
2 EHEDG-Standards - Meaning and implementation............................................................... 4
3 Instrument versions.................................................................................................................. 5
4Mounting.................................................................................................................................... 6
5 Maintenance, cleaning............................................................................................................. 8
6 Manufacturer declaration......................................................................................................... 9
7 Certificate................................................................................................................................ 10
2
EHEDG, Installation and Cleaning Instructions • VEGAVIB VB61, VB63
35483-EN-180130
Editing status: 2018-01-30
1 About this document
1 About this document
1.1Function
This instructions manual provides the most important information for
the application of level switches VEGAVIB.
1.2Scope
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These instructions apply to limit switches VEGAVIB with hygienic
process fittings and seals. You can find the fittings and seals in the
manufacturer declaration of this document.
EHEDG, Installation and Cleaning Instructions • VEGAVIB VB61, VB63
3
2 EHEDG-Standards - Meaning and implementation
Meaning of EHEDG
2 EHEDG-Standards - Meaning and
implementation
EHEDG provides practical guidance on the hygienic engineering
aspects of manufacturing safe and wholesome food. Founded in
1989, it is consortium of equipment manufacturers, food companies,
research and educational institutes as well as public health authorities
whose common aim is to promote hygiene during the processing and
packaging of food products.
EHEDG actively supports European legislation, which requires that
handling, preparation, processing and packaging of food is done
hygienically using hygienic machinery and in hyienic premises (EC
directive 98/37/EC, EN 1672-2 and EN ISO 41159).
The principal goal of EHEDG is the promotion of safe food by improving hygienic engineering and design in all aspects of food manuacture. EHEDG may authorize the use of the certification logo on equipment or products complying with the relevant EHEDG criteria (Doc.
8). If necessary, cleanability testing according to EHEDG methodes
(Doc. 2) may be required [Ref. 1].
The following versions are covered by Certificate No. ACTALIA
1-2017.
Use of instruments according to EHEDG
The use of instruments and components with the EHEDG-Logo provides proof that the configuration was tested. The certificate always
refers to a combination of sensor and process fitting. Both components of this combination must conform with EHEDG. It looks like the
following:
The requirements for installations according to EHEDG are much
higher than those for standard applications. This applies especially to:
•
•
•
•
Configuration of the process fitting
Seals (e.g. FDA and EG 1935/2004 conformity, resistiveness)
Installation position on the vessel (e.g. self-drainage)
Cleaning, maintenance (intervals, methods)
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EHEDG, Installation and Cleaning Instructions • VEGAVIB VB61, VB63
3 Instrument versions
Housing
3 Instrument versions
For use according to EHEDG standard, the housing is preferably of
stainless steel, electropolished and executed with protection rating
IP 69K/NEMA, should be used. On these instruments, e.g., the transition to the process fitting is shortened for better cleanability.
This housing version is suitable for measurement loops with increased hygienic requirements and applications where a daily wet
cleaning is required. As orientation, the definition of the zone division
acc. to EHEDG is valid.
If "EHEDG" is selected in the configurator, the housing will be marked
with a "EHEDG" Logo.
Process fittings
Only process fittings listed in chapter "Manufacturer declaration" may
be used for installations according to EHEDG standards.
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They meet the hygienic requirements of EHEDG standards Doc. 2
and 8.
EHEDG, Installation and Cleaning Instructions • VEGAVIB VB61, VB63
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4 Mounting
4Mounting
Note the following items for a measuring point according to EHEDG
standard:
•
Installation position
All parts of the measuring point must be certified according to
EHEDG
The sensor has to be mounted that self-drainage of the sensor resp.
Housing is possible.
If the sensor is mounted in a different position, the user must ensure
the self-drainage of the sensor through suitable measures.
Socket
If possible, the front-flush installation position should be preferred.
If this is not possible, a longer or more difficult cleaning has to be
expected.
Such difficult-to-clean spots must be taken into account by the operator for cleaning validation.
In cases where mounting in pipe sockets cannot be avoided, short
sockets should be used.
The height of the socket (h) can be at most twice as large as the difference between the sensor and the pipe inner diameter (D).
The following formula is applicable: h = (D - d) * 2
D (mm)
110
100
90
h = (D - d) · 2
80
h
70
60
50
40
1
25
21,3
30
10
0
50
100
150
200
h (mm)
d
D
Fig. 1: Socket table
h
D
d
1
Housing
For hygienical reasons, the following single chamber housings are
recommended.
Aluminium single chamber housing
Stainless steel single chamber housing - precision casting
Plastic single chamber housing
EHEDG, Installation and Cleaning Instructions • VEGAVIB VB61, VB63
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•
•
•
6
Permissible socket height (sealing surface to tube inner diameter)
Socket inner diameter
Sensor diameter: 21.3 mm (0.84 in)
Technical lower limit of the socket inner diameter: DN 25, 1"
4 Mounting
1
2
Fig. 2: Housing
1 Vertical mounting only with stainless steel housing, electropolished
2 Lateral mounting also with other single chamber housings possible (e.g.
aluminium single chamber housing)
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If the sensor should be mounted vertically, is recommended the stainless steel housing, electropolished.
EHEDG, Installation and Cleaning Instructions • VEGAVIB VB61, VB63
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5 Maintenance, cleaning
Maintenance
5 Maintenance, cleaning
It is the responsibility of the user to ensure the hygienically safe condition of the sensor during its entire service life.
This includes selecting the seal material according to process specific
requirements. A leaky seal represents a hygienic risk. To avoid this,
the seals should be replaced with new ones at regular intervals and
the sensor checked for damage. The accessible surface must be
cleaned carefully when the seal is exchanged.
The user plans the intervals according to the process conditions and
seal materials.
Cleaning
The sensor should be kept clean by using validated, state-of-the-art
cleaning processes. Success should be checked by dismounting the
sensor. The user is responsible for ensuring that the seal material as
well as the sensor itself are resistant to the medium and the cleaning
process. Resistance lists as well as the technical data of the respective sensor can serve as a basis for selection.
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EHEDG, Installation and Cleaning Instructions • VEGAVIB VB61, VB63
6 Manufacturer declaration
6 Manufacturer declaration
We hereby declare that the instrument and process fitting combinations of the following versions of VEGAVIB meet the requirements of
EHEDG Doc. 2 and 8:
VEGAVIB VB61(*). VEGAVIB VB63(*).[ab][A,B,C]****(*)
[ab]: 2-digit alphanumeric code to define allowed Process Connections.
Clamp (ISO2852)
[ab] = [CD, CT, CA, CV, DB, CF, CQ, CL, CM, CO]
DIN 11864-1:
[ab] = [RE, RF, RD]
DIN 11864-3:
[ab] = [C1, C2]
Varivent:
[ab] = [TA, TV]
DIN 11851 (only in combination with upgrade acc. to EHEDG Postion Paper)
[ab] = [RA, RB, RC, RG, RH, RP]
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Note: Further process connections from the Position Paper: "Easy
Cleanable Pipe Couplings and Process Connections" are optional.
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7 Certificate
7 Certificate
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EHEDG, Installation and Cleaning Instructions • VEGAVIB VB61, VB63
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Notes
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All statements concerning scope of delivery, application, practical use and operating conditions of the sensors and processing systems correspond to the information
available at the time of printing.
Subject to change without prior notice
© VEGA Grieshaber KG, Schiltach/Germany 2018
VEGA Grieshaber KG
Am Hohenstein 113
77761 Schiltach
Germany
Phone +49 7836 50-0
Fax +49 7836 50-201
E-mail: info.de@vega.com
www.vega.com
35483-EN-180130
Printing date: