English; Safety Instructions; General Safety Instructions; Safety Instructions For Operation In Hazardous Areas - Mettler Toledo PFK9 Serie Informations D'installation

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Safety instructions

1.1

General safety instructions

▲ All requirements and provisions of the building authorities as well as the recognised
rules of construction technology are to be observed.
▲ The owner-operator has to ensure that the load bearing capacity of the ground/surface
after the pit has been built is ensured.
▲ Consult an architect or a structural engineer about the dimensioning of the wall and
floor thickness as well as the reinforcement (if necessary) and to specify the quality
of the concrete.
▲ The owner-operator is responsible for sealing the masonry.

1.2 Safety instructions for operation in hazardous areas

The PFK9-series high precision weighing platforms are approved for operation in
Category 3, Division 2 and Category 2, Division 1 hazardous areas. There is an increased
risk in injury and damage when using the explosion-protected weighing platforms in
a potentially explosive atmosphere. Special care must be taken when working in such
hazardous areas.
Any protective foils present in the hazardous area, e.g. on the load plate, must always be
removed.
▲ In hazardous areas, the weighing platforms may only be installed, maintained and
repaired by authorized METTLER TOLEDO service personnel.
▲ No modifications may be made to the weighing platform and no repair work may be
performed on the system modules.
▲ Any weighing platform or system modules that are used must comply with the
specifications contained in the installation instructions. Non-compliant equipment
jeopardizes the intrinsic safety of the system, cancels the "Ex" approval and renders
any warranty or product liability claims null and void.
▲ The safety of the weighing system is only guaranteed when the weighing system is
operated, installed and maintained in accordance with the respective instructions.
▲ Also comply with the following:
– the instructions for the system modules,
– the regulations and standards in the respective country,
– the statutory requirement for electrical equipment installed in hazardous areas in
the respective country,
– all instructions related to safety issued by the owner.
▲ The explosion-protected weighing system must be checked to ensure compliance with
the requirements for safety before being put into service for the first time, following any
service work and every 3 years, at least.
Quick Pit for PFK9-series, sizes D/E/ES 30233018C

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