Index: firmware/App/Controllers/LoadCell.c
===================================================================
diff -u -r6be821de57d67cf638e4da6dbbda72b293bd091e -rc2df1e4a1b450f5d83d2d3fc5c671e16c270e5d7
--- firmware/App/Controllers/LoadCell.c	(.../LoadCell.c)	(revision 6be821de57d67cf638e4da6dbbda72b293bd091e)
+++ firmware/App/Controllers/LoadCell.c	(.../LoadCell.c)	(revision c2df1e4a1b450f5d83d2d3fc5c671e16c270e5d7)
@@ -49,7 +49,6 @@
 #define LOAD_CELL_MIN_ALLOWED_WEIGHT_BEFORE_TARE_GRAMS          1600.0F                               ///< Load cell minimum allowed weight before tare in grams.
 #define LOAD_CELL_WEIGHT_OUT_RANGE_PERSISTENT_PERIOD_MS         (5 * MS_PER_SECOND)                   ///< Load cell weight out of range persistent period in milliseconds.
 #define LOAD_CELL_PRIMARY_BACKUP_MAX_DRIFT_PERSISTENT_PERIOD_MS (5 * MS_PER_SECOND)                   ///< Load cell primary and backup maximum allowed weight drift persistent period in milliseconds.
-#define EMPTY_RESERVOIR_WEIGHT_GRAMS                            1700.0F                               ///< Reservoirs empty weight in grams.
 #define MAX_ALLOWED_EXTRA_WEIGHT_BEFORE_FIRST_TARE_GRAMS        300.0F                                ///< Max allowed extra weight before first tare in grams.
 #define HEAT_ACTIVE_COOL_MAX_ALLOWED_EXTRA_WEIGHT_TARE_GRAMS    200.0F                                ///< Heat disinfect active cool max allowed weight before tare in grams.
 #define MAX_ALLOWED_EXTRA_WEIGHT_BEFORE_TARE_GRAMS              60.0F                                 ///< Max allowed extra weight before tare in grams.
@@ -88,7 +87,8 @@
 static U32 smallReadingsIdx;                                                                          ///< Index for next sample in load cell small rolling average sample array.
 static U32 largeReadingsIdx;                                                                          ///< Index for next sample in load cell large rolling average sample array.
 static DG_LOAD_CELLS_CAL_RECORD_T loadCellsCalRecord;                                                 ///< Load cells calibration record.
-static BOOL hasLoadCellBeenTared[ NUM_OF_LOAD_CELLS ];                                                ///< Flags indicating whether loadcells have been tared yet.
+static DG_RESERVOIR_VOLUME_RECORD_T reservoirsCalRecord;                                              ///< DG reservoirs non-volatile record.
+static BOOL hasLoadCellBeenTared[ NUM_OF_LOAD_CELLS ];                                                ///< Flags indicating whether load cells have been tared yet.
 
 // ********** private function prototypes **********
 
@@ -202,14 +202,31 @@
     // Check if a new calibration is available
     if ( TRUE == isNewCalibrationRecordAvailable() )
     {
+        F32 reservoir1EmptyWeightG = EMPTY_RESERVOIR_WEIGHT_GRAMS;
+        F32 reservoir2EmptyWeightG = EMPTY_RESERVOIR_WEIGHT_GRAMS;
+
+        getNVRecord2Driver( GET_CAL_RSRVRS_VOL_RECORD, (U08*)&reservoirsCalRecord, sizeof( DG_RESERVOIR_VOLUME_RECORD_T ),
+                            NUM_OF_CAL_DATA_RSRVRS, ALARM_ID_DG_RESERVOIRS_INVALID_CAL_RECORD );
+
         getNVRecord2Driver( GET_CAL_LOAD_CELL_SENSORS, (U08*)&loadCellsCalRecord, sizeof( DG_LOAD_CELLS_CAL_RECORD_T ),
                             NUM_OF_CAL_DATA_LOAD_CELLS, ALARM_ID_DG_LOAD_CELLS_INVALID_CAL_RECORD );
 
+        if ( reservoirsCalRecord.reservoir[ CAL_DATA_RSRVR_1 ].rsrvrUnfilledWeight != 0.0F )
+        {
+            // Use the hard coded empty reservoir weight until the cal data is available
+            reservoir1EmptyWeightG = ( reservoirsCalRecord.reservoir[ CAL_DATA_RSRVR_1 ].rsrvrUnfilledWeight );
+        }
+
+        if ( reservoirsCalRecord.reservoir[ CAL_DATA_RSRVR_2 ].rsrvrUnfilledWeight != 0.0F )
+        {
+            reservoir2EmptyWeightG = ( reservoirsCalRecord.reservoir[ CAL_DATA_RSRVR_2 ].rsrvrUnfilledWeight );
+        }
+
         // Zero the current tare values when new calibration data is available
-        loadcells[ LOAD_CELL_RESERVOIR_1_PRIMARY ].autoCalOffset = EMPTY_RESERVOIR_WEIGHT_GRAMS;
-        loadcells[ LOAD_CELL_RESERVOIR_1_BACKUP ].autoCalOffset  = EMPTY_RESERVOIR_WEIGHT_GRAMS;
-        loadcells[ LOAD_CELL_RESERVOIR_2_PRIMARY ].autoCalOffset = EMPTY_RESERVOIR_WEIGHT_GRAMS;
-        loadcells[ LOAD_CELL_RESERVOIR_2_BACKUP ].autoCalOffset  = EMPTY_RESERVOIR_WEIGHT_GRAMS;
+        loadcells[ LOAD_CELL_RESERVOIR_1_PRIMARY ].autoCalOffset = reservoir1EmptyWeightG;
+        loadcells[ LOAD_CELL_RESERVOIR_1_BACKUP ].autoCalOffset  = reservoir1EmptyWeightG;
+        loadcells[ LOAD_CELL_RESERVOIR_2_PRIMARY ].autoCalOffset = reservoir2EmptyWeightG;
+        loadcells[ LOAD_CELL_RESERVOIR_2_BACKUP ].autoCalOffset  = reservoir2EmptyWeightG;
     }
 
     // Rolling average of last 100 raw samples in small filter
@@ -303,10 +320,14 @@
 SELF_TEST_STATUS_T execLoadCellsSelfTest ( void )
 {
     SELF_TEST_STATUS_T result = SELF_TEST_STATUS_IN_PROGRESS;
+    BOOL calStatus            = FALSE;
 
-    BOOL calStatus = getNVRecord2Driver( GET_CAL_LOAD_CELL_SENSORS, (U08*)&loadCellsCalRecord, sizeof( DG_LOAD_CELLS_CAL_RECORD_T ),
-                                         NUM_OF_CAL_DATA_LOAD_CELLS, ALARM_ID_DG_LOAD_CELLS_INVALID_CAL_RECORD );
+    calStatus |= getNVRecord2Driver( GET_CAL_LOAD_CELL_SENSORS, (U08*)&loadCellsCalRecord, sizeof( DG_LOAD_CELLS_CAL_RECORD_T ),
+                                     NUM_OF_CAL_DATA_LOAD_CELLS, ALARM_ID_DG_LOAD_CELLS_INVALID_CAL_RECORD );
 
+    calStatus |= getNVRecord2Driver( GET_CAL_RSRVRS_VOL_RECORD, (U08*)&reservoirsCalRecord, sizeof( DG_RESERVOIR_VOLUME_RECORD_T ),
+                                     NUM_OF_CAL_DATA_RSRVRS, ALARM_ID_DG_RESERVOIRS_INVALID_CAL_RECORD );
+
     if ( TRUE == calStatus )
     {
         result = SELF_TEST_STATUS_PASSED;
Index: firmware/App/Controllers/LoadCell.h
===================================================================
diff -u -r7d4711edd7b40cd3e29f43e766f79a8a09586fe9 -rc2df1e4a1b450f5d83d2d3fc5c671e16c270e5d7
--- firmware/App/Controllers/LoadCell.h	(.../LoadCell.h)	(revision 7d4711edd7b40cd3e29f43e766f79a8a09586fe9)
+++ firmware/App/Controllers/LoadCell.h	(.../LoadCell.h)	(revision c2df1e4a1b450f5d83d2d3fc5c671e16c270e5d7)
@@ -30,6 +30,7 @@
  */
 
 // ********** public definitions **********
+#define EMPTY_RESERVOIR_WEIGHT_GRAMS                            1700.0F                               ///< Reservoirs empty weight in grams.
 
 // ********** public function prototypes **********
 
Index: firmware/App/Modes/ModeService.c
===================================================================
diff -u -r7d4711edd7b40cd3e29f43e766f79a8a09586fe9 -rc2df1e4a1b450f5d83d2d3fc5c671e16c270e5d7
--- firmware/App/Modes/ModeService.c	(.../ModeService.c)	(revision 7d4711edd7b40cd3e29f43e766f79a8a09586fe9)
+++ firmware/App/Modes/ModeService.c	(.../ModeService.c)	(revision c2df1e4a1b450f5d83d2d3fc5c671e16c270e5d7)
@@ -17,6 +17,7 @@
 
 #include "ConcentratePumps.h"
 #include "CPLD.h"
+#include "LoadCell.h"
 #include "ModeService.h"
 #include "OperationModes.h"
 
@@ -59,6 +60,11 @@
     deenergizeActuators( NO_PARK_CONC_PUMPS );
     initServiceMode();
     setCurrentSubState( NO_SUB_STATE );
+    resetLoadCellOffset( LOAD_CELL_RESERVOIR_1_PRIMARY );
+    resetLoadCellOffset( LOAD_CELL_RESERVOIR_1_BACKUP );
+    resetLoadCellOffset( LOAD_CELL_RESERVOIR_2_PRIMARY );
+    resetLoadCellOffset( LOAD_CELL_RESERVOIR_2_BACKUP );
+
     return serviceState;
 }