2301300.07 EN/DE/FR 12/2017
5 WIKA Operating instructions / Betriebsanleitung / Mode d'emploi PS-20, PS-21
5. For your safety
5. For your safety
GB
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Select the appropriate pressure switch with regard to scale range, performance and
specific measurement conditions prior to installing and starting the instrument.
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Observe the relevant national regulations and observe the applicable standards and
directives for special applications (e.g. with dangerous media such as acetylene,
flammable gases or liquids and toxic gases or liquids and with refrigeration plants or
compressors). If you do not observe the appropriate regulations, serious injuries and/or
damage can occur!
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Open pressure connections only after the system is without pressure!
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Please make sure that the pressure switch is only used within the overload threshold limit all the time!
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Observe the ambient and working conditions outlined in section 7 „Technical data”.
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Observe the technical data for the use of the pressure switch in connection with aggressive / corrosive
media and for the avoidance of mechanical hazards.
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Ensure that the pressure switch is only operated in accordance with the provisions i.e. as described in
the following instructions.
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Do not interfere with or change the pressure switch in any other way than described in these operating
instructions.
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Remove the pressure switch from service and mark it to prevent it from being used again accidentally, if
it becomes damaged or unsafe for operation
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Take precautions with regard to remaining media in removed pressure switches.Remaining media in the
pressure port may be hazardous or toxic!
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Have repairs performed by the manufacturer only.
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Warning