11
Authorised Use
2 AUTHORISED USE
Incorrect use of the control head Type 8681 may be dangerous to people, nearby equipment and
the environment.
The control head is designed for use as a control unit for pneumatically actuated process valves
and / or for recording their switching statuses.
` Use the device for its intended purpose only! Non-intended use of the device may be dangerous to
people,nearbyequipmentandtheenvironment.
` Usethedeviceaccordingtotheauthoriseddata,operatingconditionsandconditionsofusespeciedin
the contract documents and operating instructions. These are described in chapter “6TechnicalData”.
` In view of the large number of application options, check and, if necessary, test prior to installation
whetherthecontrolheadissuitableforthespecicapplicationcase:
Shouldyouhaveanyquestions,pleasecontactyourBürkertServiceCenter.
` DonotusepulsatingDCvoltage(rectiedACvoltagewithoutsmoothing)astheoperatingvoltage.
` Use the device only in conjunction with third-party devices and components recommended and autho-
risedbyBürkert.
` Any unauthorised reconstructions and changes to the control head are prohibited for safety reasons.
` Correct transportation, correct storage and installation as well as careful operation and maintenance are
essential for reliable and problem-free operation.
` For connecting the control head, use line installations that do not cause any mechanical stresses.
` Inhazardousareas(potentiallyexplosiveatmosphere),onlyusedevicesthatareapprovedforthisarea.
Thesedevicesareidentiedbyaseparate„Ex“typelabel.Foruse,observetheinformationonthe
separate„Ex“typelabelandtheadditionalinstructions(ATEX)–todownloadfromtheBürkertweb-
site–see„4.3InformationandinstructionsontheInternet“onpage14.
` Devices without a separate Ex type label must not be used in the potentially explosive atmosphere..
english
Control Head Type 8681