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System.Xml.Xsl.XslTransformException: An error occurred during a call to extension function 'GetHomeItem'. See InnerException for a complete description of the error. ---> System.ArgumentNullException: Value cannot be null. Parameter name: item at Sitecore.Diagnostics.Assert.Throw(Exception e) at Sitecore.Diagnostics.Assert.ArgumentNotNull(Object argument, String argumentName) at Sitecore.Xml.XPath.ItemNavigator.Initialize(Item item) at Sitecore.Configuration.Factory.CreateItemNavigator(Item item) at Sq.Nederman.Internet.Xsl.XslHelper.GetHomeItem() --- End of inner exception stack trace --- at System.Xml.Xsl.Runtime.XmlExtensionFunction.Invoke(Object extObj, Object[] args) at System.Xml.Xsl.Runtime.XmlQueryContext.InvokeXsltLateBoundFunction(String name, String namespaceUri, IList`1[] args) at Path(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime) at Execute(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime) at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlSequenceWriter results) at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter writer, Boolean closeWriter) at System.Xml.Xsl.XmlILCommand.Execute(IXPathNavigable contextDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter results) at System.Xml.Xsl.XslCompiledTransform.Transform(IXPathNavigable input, XsltArgumentList arguments, XmlWriter results) at Mvp.Xml.Common.Xsl.MvpXslTransform.TransformToWriter(XmlInput defaultDocument, XsltArgumentList xsltArgs, XmlWriter xmlWriter) at Mvp.Xml.Common.Xsl.MvpXslTransform.Transform(XmlInput input, XsltArgumentList arguments, XmlOutput output) at Sitecore.Web.UI.WebControls.XslFile.DoRender(HtmlTextWriter output, Item item) Xsl file could not be processed: /xsl/ned_Image.xslt

Motor Damper


The efficiency of a multi-extraction point system can also be improved if the fan only extracts air from the extraction points that are in use. A motori damper can be activated via a sensor clamp attached to the earth cable of welding equipment or a switch in the hood.

A motor damper

  • opens or closes the connection to the ducting system
  • allows a closing delay of up to 5 minutes to ensure extraction of remaining dust and fumes

Products

Technical Leaflet Motor Damper 2009
 
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