Vega VEGAMET 141 - Important Information For Mounting And Maintenance

5
VEGAMET 141, 142
63696-EN-210721
7 Importantinformationformountingandmaintenance
Generalinstructions
The following requirements must be fullled for mounting, electrical installation, setup and mainte-
nance of the instrument:
•
The sta must be qualied according the respective tasks
•
The sta must be trained in explosion protection
•
The sta must be familiar with the respectively valid regulations, e.g. planning and installation
acc. to ANSI/ISA RP12.06.01 „Installation of Intrinsically Safe Systems for Hazardous (Classi-
es) Locations“ and the National Electrical Code
®
(ANSI/NFPA 70) or Canadian Electrical Code
•
Make sure when working on the instrument (mounting, installation, maintenance) that there is no
explosive atmosphere present, the supply circuits should be voltage-free, if possible.
•
The instrument has to be mounted according to the manufacturer specications, the Certicate
of Conformity and the valid regulations and standards
•
Modications on the instrument can inuence the explosion protection and hence the safety,
therefore repairs are not permitted to be conducted by the end user
•
Modications must only be carried out by employees authorized by VEGA company
•
Use only approved spare parts
•
Components for installation and connection not included in the approval documents are only
permitted if these correspond technically to the latest standard mentioned on the cover sheet.
They must be suitable for the application conditions and have a separate certicate. The special
conditions of the components must be noted and if necessary, the components must be inte-
grated in the type test. This applies also to the components already mentioned in the technical
description.
Mounting
Keep in mind for instrument mounting
•
Mechanical damage on the instrument must be avoided
•
Mechanical friction must be avoided
Maintenance
To ensure the functionality of the device, periodic visual inspection is recommended for:
•
Secure mounting
•
No mechanical damages or corrosion
•
Worn or otherwise damaged cables
•
No loose connections of the line connections, equipotential bonding connections
•
Correct and clearly marked cable connections
Intrinsic safety "i"
•
Observe the valid regulations for connection of intrinsically safe circuits, e.g. proof of intrinsic
safety in accordance with ANSI/ISA RP12.06.01 „Installation of Intrinsically Safe Systems for
Hazardous (Classies) Locations“ and the National Electrical Code
®
(ANSI/NFPA 70) or Cana-
dian Electrical Code.
•
The instrument is only suitable for connection to certied, intrinsically safe instruments
•
If the intrinsically safe circuit is led into dust-explosive areas of zone 20, 21 or Div 1, Div 2,
please make sure that the instruments connected to these circuits meet the requirements of the
device protection level (EPL) Da, Db or Div 1, Div 2 and are certied respectively
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