Index: DGDefs.h
===================================================================
diff -u -r656fa9161aa0912c10dd59700f7d1c25b984e16f -r84bee05e4e65d7d5d62ade17ea91c870814e9471
--- DGDefs.h	(.../DGDefs.h)	(revision 656fa9161aa0912c10dd59700f7d1c25b984e16f)
+++ DGDefs.h	(.../DGDefs.h)	(revision 84bee05e4e65d7d5d62ade17ea91c870814e9471)
@@ -414,6 +414,21 @@
 };
 typedef enum DG_Chem_States DG_CHEM_DISINFECT_STATE_T;          ///< Type for DG chemical disinfect states enumeration
 
+/// Enumeration of chemical disinfect mode UI states
+enum DG_Chem_UI_States
+{
+    CHEM_DISINFECT_UI_STATE_NOT_RUNNING = 0,                    ///< Chemical disinfect UI, not running state
+    CHEM_DISINFECT_UI_STATE_FLUSH_BEFORE_DISINFECT,             ///< Chemical disinfect UI, flush before disinfect state
+    CHEM_DISINFECT_UI_STATE_MIX_WATER_AND_ACID,                 ///< Chemical disinfect UI, mix water and acid state
+    CHEM_DISINFECT_UI_STATE_REMOVE_ACID,                        ///< Chemical disinfect UI, remove acid state
+    CHEM_DISINFECT_UI_STATE_DISINFECT_DEVICE,                   ///< Chemical disinfect UI, disinfect device state
+    CHEM_DISINFECT_UI_STATE_FLUSH_AFTER_DISINFECT,              ///< Chemical disinfect UI, flush after disinfect state
+    CHEM_DISINFECT_UI_STATE_CANCEL_DISINFECT,                   ///< Chemical disinfect UI, cancel disinfect state
+    CHEM_DISINFECT_UI_STATE_COMPLETE,                           ///< Chemical disinfect UI, complete state
+    NUM_OF_CHEM_DISINFECT_UI_STATES                             ///< Number of chemical disinfect UI states
+};
+typedef enum DG_Chem_UI_States DG_CHEM_DISINFECT_UI_STATE_T;    ///< Type for DG chemical disinfect UI states enumeration
+
 #if defined(_HD_) || defined(_DG_)
 /// Chemical disinfect data
 typedef struct