Index: firmware/App/Controllers/DGInterface.c
===================================================================
diff -u -rfbdff223ca110491c6f7776669fa46ac5fc56da4 -r12cb82342073207c23708afaa64b25f83f2cdfed
--- firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision fbdff223ca110491c6f7776669fa46ac5fc56da4)
+++ firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 12cb82342073207c23708afaa64b25f83f2cdfed)
@@ -38,7 +38,8 @@
 #define SIZE_OF_LARGE_LOAD_CELL_AVG         32                  ///< Large load cell moving average has 32 samples.
 
 #define MAX_LOAD_CELL_CHANGE_G              70.0                ///< Maximum delta between new load cell sample and its small moving average (in g).
-#define MAX_ACTIVE_LOAD_CELL_CHANGE_G       30.0                ///< Maximum delta between new load cell sample and its small moving average (in g) when associated reservoir is active in treatment.
+#define MAX_ACTIVE_LOAD_CELL_CHANGE_G       30.0                ///< Maximum delta between new load cell sample and its small moving average (in g) when associated reservoir is active in treatment.
+#define LOAD_CELL_CHANGE_PERSISTENCE        3                   ///< Excessive load cell acceleration must persist for 3 samples (@ 10 Hz) to trigger alarm.
 
 /// States of the treatment reservoir management state machine.
 typedef enum TreatmentReservoirMgmt_States
@@ -84,14 +85,16 @@
 static F32 lgFilteredReservoirWeightInGrams[ NUM_OF_DG_RESERVOIRS ];
 
 // load cell filtering data
-/// holds load cell samples for small load cell moving average
+/// Holds load cell samples for small load cell moving average.
 static F32 smLoadCellReadings[ NUM_OF_DG_RESERVOIRS ][ SIZE_OF_SMALL_LOAD_CELL_AVG ];
-static U32 smLoadCellReadingsIdx = 0;                               ///< index for next sample in small load cell rolling average sample array
-static F32 smLoadCellReadingsTotal[ NUM_OF_DG_RESERVOIRS ];         ///< rolling total - used to calc small load cell moving average
-/// holds load cell samples for large load cell moving average
+static U32 smLoadCellReadingsIdx = 0;                               ///< Index for next sample in small load cell rolling average sample array.
+static F32 smLoadCellReadingsTotal[ NUM_OF_DG_RESERVOIRS ];         ///< Rolling total - used to calc small load cell moving average.
+/// Holds load cell samples for large load cell moving average.
 static F32 lgLoadCellReadings[ NUM_OF_DG_RESERVOIRS ][ SIZE_OF_LARGE_LOAD_CELL_AVG ];
-static U32 lgLoadCellReadingsIdx = 0;                               ///< index for next sample in large load cell rolling average sample array
-static F32 lgLoadCellReadingsTotal[ NUM_OF_DG_RESERVOIRS ];         ///< rolling total - used to calc large load cell moving average
+static U32 lgLoadCellReadingsIdx = 0;                               ///< Index for next sample in large load cell rolling average sample array.
+static F32 lgLoadCellReadingsTotal[ NUM_OF_DG_RESERVOIRS ];         ///< Rolling total - used to calc large load cell moving average.
+/// Persistence counters for excessive load cell acceleration alarm.
+static U32 excessiveLoadCellAccelerationCtr[ NUM_OF_DG_RESERVOIRS ] = { 0, 0 };
 
 // DG pumps data
 static F32 dgROPumpFlowRateMlMin = 0.0;                             ///< Latest RO water flow rate reported by the DG.
@@ -686,11 +689,15 @@
         // Trigger or clear excessive load cell acceleration condition
         if ( TRUE == deltaAlarmDetected )
         {
-            SET_ALARM_WITH_2_F32_DATA( deltaAlarm, wt, smFilteredReservoirWeightInGrams[ res ] );
+            if ( ++excessiveLoadCellAccelerationCtr[ res ] > LOAD_CELL_CHANGE_PERSISTENCE )
+            {
+                SET_ALARM_WITH_2_F32_DATA( deltaAlarm, wt, smFilteredReservoirWeightInGrams[ res ] );
+            }
         }
         else
         {
-            // clearAlarmCondition( deltaAlarm );  TODO - un-comment when merged with branch that has this function implemented.
+            excessiveLoadCellAccelerationCtr[ res ] = 0;
+            clearAlarmCondition( deltaAlarm );
         }
 #endif
         smLoadCellReadingsTotal[ res ] -= smLoadCellReadings[ res ][ smLoadCellReadingsIdx ];