Index: firmware/App/Controllers/ConcentratePumps.c
===================================================================
diff -u -r7d24ef2e6a4130b3a049e6106a0371fc6503271f -ree40156fe9be170a677d5a4a944145dd0c23b9f1
--- firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision 7d24ef2e6a4130b3a049e6106a0371fc6503271f)
+++ firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision ee40156fe9be170a677d5a4a944145dd0c23b9f1)
@@ -57,7 +57,7 @@
                                                               ( CONCENTRATE_PUMP_STEP_PER_REV * \
                                                                 CONCENTRATE_PUMP_MICRO_STEPS_PER_STEP ) )       ///< Convert volume in to number of revolutions needed.
 #define CONCENTRATE_PUMP_VOLUME_TO_REVOLUTION               ( ( 1.0F / CONCENTRATE_PUMP_VOLUME_PER_REV ) * \
-                                                              ( CONCENTRATE_PUMP_VOLUME_PER_REV * \
+                                                              ( CONCENTRATE_PUMP_STEP_PER_REV * \
                                                                 CONCENTRATE_PUMP_MICRO_STEPS_PER_STEP ) )       ///< Convert volume in to number of revolutions needed.
 #define CONCENTRATE_PUMP_STEP_PERIOD_RESOLUTION             ( 0.50F / ( US_PER_SECOND * SEC_PER_MIN ) )         ///< Convert step period resolution (0.50 us) to minute.
 
@@ -561,12 +561,14 @@
             }
             else
             {
-                if ( TRUE == getTestConfigStatus( TEST_CONFIG_DIENER_CONC_PUMP ) )
+                if ( TRUE != getTestConfigStatus( TEST_CONFIG_DISABLE_DIENER_CONC_PUMP ) )
                 {
                     pumpTargetRevCnt[ pumpId ].data = (U32)( targetVolume_ml * CONCENTRATE_PUMP_VOLUME_TO_REVOLUTION_DIENER );
                 }
                 else
                 {
+                    //Restrict FMI pump speed to 48.0 ml/min.
+                    targetSpeed_ml_min = ( targetSpeed_ml_min > CONCENTRATE_PUMP_MAX_SPEED_FMI ) ? CONCENTRATE_PUMP_MAX_SPEED_FMI : targetSpeed_ml_min;
                     pumpTargetRevCnt[ pumpId ].data = (U32)( targetVolume_ml * CONCENTRATE_PUMP_VOLUME_TO_REVOLUTION );
                 }
             }
@@ -1067,7 +1069,7 @@
         F32 timePerStep;
         F32 stepPeriodCounts;
 
-        if ( TRUE == getTestConfigStatus( TEST_CONFIG_DIENER_CONC_PUMP ) )
+        if ( TRUE != getTestConfigStatus( TEST_CONFIG_DISABLE_DIENER_CONC_PUMP ) )
         {
             timePerStep = CONCENTRATE_PUMP_VOLUME_PER_REV_DIENER / ( concentratePumps[ pumpId ].currentPumpSpeed * CONCENTRATE_PUMP_STEP_PER_REV );
         }
@@ -1149,7 +1151,7 @@
         }
         else if ( FALSE == isPumpPulseWidthOut )
         {
-            if ( TRUE == getTestConfigStatus( TEST_CONFIG_DIENER_CONC_PUMP ) )
+            if ( TRUE != getTestConfigStatus( TEST_CONFIG_DISABLE_DIENER_CONC_PUMP ) )
             {
                 measuredPumpSpeed[ pumpId ].data = ( US_PER_SECOND / pulseWidthInMicroSeconds ) * CONCENTRATE_PUMP_VOLUME_PER_PULSE_DIENER * SEC_PER_MIN;
             }