diff --git a/NKC_WF/WebUserControls/cmp_MachSem.ascx b/NKC_WF/WebUserControls/cmp_MachSem.ascx
index c26750e..dc69528 100644
--- a/NKC_WF/WebUserControls/cmp_MachSem.ascx
+++ b/NKC_WF/WebUserControls/cmp_MachSem.ascx
@@ -16,7 +16,7 @@
 
 <div class="row" runat="server" id="divRuntime">
     <div class="col-3">
-        <asp:LinkButton runat="server" ID="lbtReset" class="btn btn-info btn-block text-center" OnClick="lbtReset_Click"><i class="fa fa-microchip" aria-hidden="true"></i>&nbsp;<%: hfMachine.Value %></asp:LinkButton>
+        <asp:LinkButton runat="server" ID="lbtReset" class="btn btn-info btn-block text-center" OnClick="lbtReset_Click"><i class="fa fa-refresh" aria-hidden="true"></i>&nbsp;<%: hfMachine.Value %></asp:LinkButton>
     </div>
     <div class="col-9">
         <div class="d-flex text-center">
diff --git a/NKC_WF/WebUserControls/cmp_MachSem.ascx.cs b/NKC_WF/WebUserControls/cmp_MachSem.ascx.cs
index f22062f..9ed46fe 100644
--- a/NKC_WF/WebUserControls/cmp_MachSem.ascx.cs
+++ b/NKC_WF/WebUserControls/cmp_MachSem.ascx.cs
@@ -24,12 +24,7 @@ namespace NKC_WF.WebUserControls
             {
                 if (!string.IsNullOrEmpty(value))
                 {
-                    string url = HttpContext.Current.Request.Url.AbsoluteUri;
-                    if (url.Contains("?mach="))
-                    {
-                        url = url.Substring(0, url.IndexOf("?mach="));
-                    }
-                    url += $"?mach={value}";
+                    string url = $"{currPage}?mach={value}";
                     Response.Redirect(url);
                 }
             }
@@ -39,7 +34,7 @@ namespace NKC_WF.WebUserControls
         {
             get
             {
-                string url = HttpContext.Current.Request.Url.AbsoluteUri;
+                string url = HttpContext.Current.Request.Url.PathAndQuery;
                 if (url.Contains("?mach="))
                 {
                     url = url.Substring(0, url.IndexOf("?mach="));
@@ -64,6 +59,7 @@ namespace NKC_WF.WebUserControls
         {
             divSelect.Visible = !machSelected;
             divRuntime.Visible = machSelected;
+            hfMachClass.Value = currMachine == "NE01" ? "dark" : "light";
             lbtReset.Attributes.Remove("class");
             lbtReset.Attributes.Add("class", $"btn btn-block text-center btn-{hfMachClass.Value}");
         }
diff --git a/NKC_WF/site/MachineLoad.aspx b/NKC_WF/site/MachineLoad.aspx
index e66ed7b..d38107a 100644
--- a/NKC_WF/site/MachineLoad.aspx
+++ b/NKC_WF/site/MachineLoad.aspx
@@ -17,9 +17,9 @@
                 <div class="col-5 text-right">
                 </div>
             </div>
-            <div class="card-body py-1 textBig">
+            <div class="card-body py-1 textBig" id="divMain" runat="server">
                 <asp:Timer ID="timerLong" runat="server" Interval="30000" OnTick="timerLong_Tick"></asp:Timer>
-                <asp:UpdatePanel runat="server" ID="upnlBCode" UpdateMode="Conditional" ChildrenAsTriggers="true">
+                <asp:UpdatePanel runat="server" ID="upnlMain" UpdateMode="Conditional" ChildrenAsTriggers="true">
                     <ContentTemplate>
                         <asp:Timer ID="timerLoad" runat="server" Interval="2000" OnTick="timerLoad_Tick"></asp:Timer>
                         <div class="row">
diff --git a/NKC_WF/site/MachineLoad.aspx.cs b/NKC_WF/site/MachineLoad.aspx.cs
index e4e6376..6725d80 100644
--- a/NKC_WF/site/MachineLoad.aspx.cs
+++ b/NKC_WF/site/MachineLoad.aspx.cs
@@ -5,6 +5,39 @@ namespace NKC_WF
 {
     public partial class MachineLoad : BasePage
     {
+        #region Private Methods
+
+        private void Cmp_stackLoading_eh_doRefresh(object sender, EventArgs e)
+        {
+            forceRefresh();
+        }
+
+        private void forceRefresh()
+        {
+            // verifico CI SIA la macchina...
+            if (string.IsNullOrEmpty(cmp_MachSem.currMachine))
+            {
+                divMain.Visible = false;
+            }
+            else
+            {
+                divMain.Visible = true;
+                cmp_stackLoading.doUpdate();
+                cmp_ML_ShDet.BatchId = cmp_stackLoading.BatchIdCurr;
+                cmp_ML_ShDet1.BatchId = cmp_stackLoading.BatchIdCurr;
+                cmp_ML_ShDet2.BatchId = cmp_stackLoading.BatchIdCurr;
+                cmp_ML_ShDet3.BatchId = cmp_stackLoading.BatchIdCurr;
+                cmp_ML_ShDet.doUpdate();
+                cmp_ML_ShDet1.doUpdate();
+                cmp_ML_ShDet2.doUpdate();
+                cmp_ML_ShDet3.doUpdate();
+            }
+        }
+
+        #endregion Private Methods
+
+        #region Protected Methods
+
         protected void Page_Load(object sender, EventArgs e)
         {
             if (!Page.IsPostBack)
@@ -15,31 +48,16 @@ namespace NKC_WF
             cmp_stackLoading.eh_doRefresh += Cmp_stackLoading_eh_doRefresh;
         }
 
-        private void Cmp_stackLoading_eh_doRefresh(object sender, EventArgs e)
-        {
-            forceRefresh();
-        }
-
-        private void forceRefresh()
-        {
-            cmp_stackLoading.doUpdate();
-            cmp_ML_ShDet.BatchId = cmp_stackLoading.BatchIdCurr;
-            cmp_ML_ShDet1.BatchId = cmp_stackLoading.BatchIdCurr;
-            cmp_ML_ShDet2.BatchId = cmp_stackLoading.BatchIdCurr;
-            cmp_ML_ShDet3.BatchId = cmp_stackLoading.BatchIdCurr;
-            cmp_ML_ShDet.doUpdate();
-            cmp_ML_ShDet1.doUpdate();
-            cmp_ML_ShDet2.doUpdate();
-            cmp_ML_ShDet3.doUpdate();
-        }
-
         protected void timerLoad_Tick(object sender, EventArgs e)
         {
             forceRefresh();
         }
+
         protected void timerLong_Tick(object sender, EventArgs e)
         {
             Response.Redirect(Request.RawUrl);
         }
+
+        #endregion Protected Methods
     }
 }
\ No newline at end of file
diff --git a/NKC_WF/site/MachineLoad.aspx.designer.cs b/NKC_WF/site/MachineLoad.aspx.designer.cs
index bf22d46..d5e5d36 100644
--- a/NKC_WF/site/MachineLoad.aspx.designer.cs
+++ b/NKC_WF/site/MachineLoad.aspx.designer.cs
@@ -23,6 +23,15 @@ namespace NKC_WF
         /// </remarks>
         protected global::NKC_WF.WebUserControls.cmp_MachSem cmp_MachSem;
 
+        /// <summary>
+        /// divMain control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.HtmlControls.HtmlGenericControl divMain;
+
         /// <summary>
         /// timerLong control.
         /// </summary>
@@ -33,13 +42,13 @@ namespace NKC_WF
         protected global::System.Web.UI.Timer timerLong;
 
         /// <summary>
-        /// upnlBCode control.
+        /// upnlMain control.
         /// </summary>
         /// <remarks>
         /// Auto-generated field.
         /// To modify move field declaration from designer file to code-behind file.
         /// </remarks>
-        protected global::System.Web.UI.UpdatePanel upnlBCode;
+        protected global::System.Web.UI.UpdatePanel upnlMain;
 
         /// <summary>
         /// timerLoad control.
diff --git a/NKC_WF/site/MachineUnload.aspx b/NKC_WF/site/MachineUnload.aspx
index d6d560c..7624abf 100644
--- a/NKC_WF/site/MachineUnload.aspx
+++ b/NKC_WF/site/MachineUnload.aspx
@@ -24,7 +24,7 @@
                     </div>
                 </ContentTemplate>
             </asp:UpdatePanel>
-            <div class="card-body py-1 bg-dark">
+            <div class="card-body py-1 bg-dark" id="divMain" runat="server">
                 <asp:UpdatePanel runat="server" ID="upnlStats" UpdateMode="Conditional">
                     <ContentTemplate>
                         <asp:HiddenField ID="hfBatchID" runat="server" />
diff --git a/NKC_WF/site/MachineUnload.aspx.cs b/NKC_WF/site/MachineUnload.aspx.cs
index ebdcbf9..fdbff97 100644
--- a/NKC_WF/site/MachineUnload.aspx.cs
+++ b/NKC_WF/site/MachineUnload.aspx.cs
@@ -123,23 +123,32 @@ namespace NKC_WF
         /// </summary>
         private void doUpdate()
         {
-            // imposto dati correnti
-            bool doUpdate = setCurrData();
-            // aggiorno child
-            cmp_MU_stats.BatchId = BatchId;
-            cmp_MU_bins.BatchId = BatchId;
-            cmp_MU_carts.BatchId = BatchId;
-            cmp_MU_svgViewer.BatchId = BatchId;
-            cmp_MU_svgViewer.SheetId = SheetId;
-            if (doUpdate)
+            // verifico CI SIA la macchina...
+            if (string.IsNullOrEmpty(cmp_MachSem.currMachine))
             {
-                cmp_MU_svgViewer.doUpdate();
-                upnlDrawings.DataBind();
-                upnlDrawings.Update();
-                upnlTitle.Update();
+                divMain.Visible = false;
+            }
+            else
+            {
+                divMain.Visible = true;
+                // imposto dati correnti
+                bool doUpdate = setCurrData();
+                // aggiorno child
+                cmp_MU_stats.BatchId = BatchId;
+                cmp_MU_bins.BatchId = BatchId;
+                cmp_MU_carts.BatchId = BatchId;
+                cmp_MU_svgViewer.BatchId = BatchId;
+                cmp_MU_svgViewer.SheetId = SheetId;
+                if (doUpdate)
+                {
+                    cmp_MU_svgViewer.doUpdate();
+                    upnlDrawings.DataBind();
+                    upnlDrawings.Update();
+                    upnlTitle.Update();
+                }
+                // definisco se mostrare PartMIA
+                hlPartMIA.Visible = showPartMIA;
             }
-            // definisco se mostrare PartMIA
-            hlPartMIA.Visible = showPartMIA;
         }
 
         /// <summary>
diff --git a/NKC_WF/site/MachineUnload.aspx.designer.cs b/NKC_WF/site/MachineUnload.aspx.designer.cs
index ca72db9..9e7ca2c 100644
--- a/NKC_WF/site/MachineUnload.aspx.designer.cs
+++ b/NKC_WF/site/MachineUnload.aspx.designer.cs
@@ -41,6 +41,15 @@ namespace NKC_WF
         /// </remarks>
         protected global::System.Web.UI.WebControls.HyperLink hlPartMIA;
 
+        /// <summary>
+        /// divMain control.
+        /// </summary>
+        /// <remarks>
+        /// Auto-generated field.
+        /// To modify move field declaration from designer file to code-behind file.
+        /// </remarks>
+        protected global::System.Web.UI.HtmlControls.HtmlGenericControl divMain;
+
         /// <summary>
         /// upnlStats control.
         /// </summary>