Important Information For Mounting And Maintenance; Electrostatic Charging (Esd) - Vega VEGAPULS C 21 Manual De Usuario

7 Important information for mounting and maintenance
General instructions
The following requirements must be fulfilled for mounting, electrical installation, setup and mainte-
nance of the instrument:
•
The staff must be qualified according the respective tasks
•
The staff must be trained in explosion protection
•
The staff must be familiar with the respectively valid regulations, e.g. planning and installation
acc. to IEC 60079-14
•
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 specifications, the Certificate
of Conformity and the valid regulations and standards
•
Modifications on the instrument can influence the explosion protection and hence the safety,
therefore repairs are not permitted to be conducted by the end user
•
Modifications must only be carried out by employees authorized by VEGA company
•
Use only approved spare parts
Mounting
Keep in mind for instrument mounting
•
Mechanical damage on the instrument must be avoided
•
Mechanical friction must be avoided
•
If the device is used as a separating wall device, the operator must observe the applicable
installation regulations.
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
8 Electrostatic charging (ESD)
Take note in case of danger of electrostatic charges:
•
Avoid friction on the surfaces
•
Do not dry clean the surfaces
The instruments must be mounted/installed in such a way that the following can be ruled out:
•
electrostatic charges during operation, maintenance and cleaning.
•
process-related electrostatic charges, e.g. by measuring media flowing past
The warning on the type label indicates danger:
•
WARNING - POTENTIAL ELECTROSTATIC CHARGING HAZARD – SEE INSTRUCTIONS
•
AVERTISSEMENT – DANGER POTENTIEL DE CHARGES ELECTROSTATIQUES – VOIR
INSTRUCTION
•
For media with a conductivity smaller than 10
– The level measuring instrument must not be used in highly charge generating processes, e.g.
mechanical friction and separation processes, spraying of electrons, etc.
VEGAPULS C 21, C 22, C 23
S/m applies:
-8
IECEx
5