Safety Informa On For Electrical Installa On; Safety Informa On For Inspec On And Maintenance; Operator Lability; Qualified Personnel - ABB MT Series Manual

CAUTION - Minor injuries
Only qualified and authorized personnel are to be tasked
with the installation, electrical connection, commissioning and
maintenance of the transmitter. Qualified personnel are those
individuals who have experience in the installation, electrical con-
nection, commissioning and operation of the transmitter or simi-
lar devices and hold the necessary qualifications. These qualifica-
tions include:
— Training or instruction – authorization to operate and maintain
devices or systems according to safety engineering standards for
electrical circuits, high pressures and aggressive media
— Training or instruction in accordance with safety engineering
standards regarding maintenance and use of adequate safety
systems.
For reasons of safety, ABB recommends that only sufficiently
insulated tools, conforming to IEC EN 60900, be used.
Since the transmitter may form a link within a safety chain, it is
recommended that the device be replaced immediately if defects
are detected. In the event of use in a hazardous area, only non-
sparking tools shall be used.
2.2 Safety information for electrical installation
WARNING – Bodily Injury.
Electrical connections may only be established by
authorized personnel in accordance with the electri-
cal circuit diagrams. The electrical connection information in
the manual must be observed; otherwise, the application
protection type may be affected. Ground the measurement
system according to requirements.
2.3 Safety information for inspection and maintenance
Corrective maintenance work may be performed only by trained
personnel.
Before removing the device, depressurize the vessel and any
adjacent lines or containers.
Check whether hazardous materials have been used as measured
materials before opening the device. Residual amounts of haz-
ardous substances may still be present in the device and could
escape when the device is removed from the vessel
Within the scope of operator responsibility, check the following
as part of a regular inspection:

Pressure-bearing walls/lining of the level device

Measurement-related function

Leak-tightness

Wear (corrosion)
2.4 Operator liability
In instances where corrosive and / or abrasive materials are be-
ing measured, the user must check the level of resistance of all
parts that are coming into contact with these materials. ABB
offers guidance in the selection of material but does not accept
liability in performing this service. The user must strictly observe
the applicable national regulations with regards to installing,
functional testing, repairing and maintaining electrical devices.
4

2.5 Qualified personnel

Installing, commissioning and maintaining the device may be per-
formed only by trained personnel who are authorized by the plant
operator. These trained personnel must have read and understood
this manual and must comply with its instructions
2.6 Mounting
Read the following installation instructions carefully before pro-
ceeding. Failure to observe the warnings and instructions may
cause a malfunction or personal hazard. Before installing the trans-
mitter, ensure the device design meets the requirements of the
measurement point from both a measure technology and safety
point of view.
This applies in respect to:

Explosion-protection certification

Measuring range

Pressure

Temperature

Operating voltage
Check the suitability of the materials in regards to their resistance
to the media. This applies to the:

Gasket

Process connection and seals

Probe

End connection
In addition, the relevant directives, regulations, standards and acci-
dent prevention regulations must be observed. Measurement ac-
curacy is largely dependent on the correct installation of the level
transmitter and, if applicable, mounting arrangement. In instances
where it is possible, the measuring setup should be free from criti-
cal ambient conditions such as large variations in temperature,
vibrations or shocks.
2.7 Certification nameplates
Please refer to the 3.0 of this manual for details.
IMPORTANT
Read this manual thoroughly before using this equip-
ment. If you do not understand the content of this manual, con-
tact ABB service personnel.