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2
Safety
2.1 General sources of danger
Level switches can be part of oleodynamic equipment or fluid reservoirs, in case of damage or leakage of the fluid tank
it can result in hazardous situations. The selection of switches should be made in accordance with the applicable
standards, regulations and engineering practice.
The devices are only to be used for the intended purpose as described by the manufacturer.
2.2 Intended use
The devices may only be used for the purpose intended by the manufacturer.
The intended use of the devices, determined by the manufacturer, is to control the presence of liquid contained in a
tank, supplying electrical signal to a control panel when its level changes. The fluid storage, which can be low
pressurized, can be part of a potentially explosive atmospheres.
According to the Pressure Equipment Directive 2014/68/EU, the device is classified as pressure-maintaining equipment
without a safety function in accordance with Article 4(3) of the Directive.
When operating the device, care must be taken to ensure that the medium used is harmless to the selected device
material. Process media that exhibit changes in the state of aggregation within a range of application can influence the
functionality. Negative influences must be avoided for this reason. The process condition of these media must be within
the technical limits of the device.
Further technical data on the intended use are summarized in the product data sheet, see section 12.1 these instructions.
2.3
Operator’s responsibility
Instructions for the proper operation of the device must be observed. They are to be provided by the operator, the
respective qualified personnel for installation, maintenance and operation. Risks from electrical energy and from the
released energy of the medium, from escaping media and from improper connection of the device must be eliminated.
The details for this are to be found in the corresponding applicable set of regulations, such as DIN EN, UVV (accident
prevention regulations) and in sector-specific instances of use (DVWG, Ex-. GL, etc.), the VDE guidelines and the
regulations supplied by local utilities companies. The device must be included in the equipotential grounding within the
system.
The device must be taken out of operation and secured against unintentional operation if it must be assumed that safe
operation is no longer possible (see chapter 10, Faults).
Opening the device when energized and performing technical modifications by the customer violate the
explosion protection approval and are not permitted.
The operational safety of the device and the manufacturer's warranty are only guaranteed if the device is used as
intended. The device design must be adapted to the medium and potentially explosive atmosphere used in the plant.
The limit values specified in the technical data must not be exceeded.
The safety instructions listed in this operating manual, existing national regulations for accident prevention and internal
work, operating and safety regulations must be observed by the operator. Furthermore, he is responsible for ensuring
that all prescribed maintenance, inspection and assembly work is carried out by authorized and qualified personnel.
The device may be regarded as a pressure-maintaining part of a plant in a potentially explosive atmosphere. The
operator of this plant is obliged to carry out an ignition hazard analysis and a zone classification.
