Index: firmware/App/Modes/Prime.c
===================================================================
diff -u -r27d588d222fbaea5e324e735d70509d37f90e782 -rf9bd8b170acd484be19e9c314ef61d40a1bd9077
--- firmware/App/Modes/Prime.c	(.../Prime.c)	(revision 27d588d222fbaea5e324e735d70509d37f90e782)
+++ firmware/App/Modes/Prime.c	(.../Prime.c)	(revision f9bd8b170acd484be19e9c314ef61d40a1bd9077)
@@ -41,7 +41,8 @@
 #define BLOOD_PUMP_FAST_FLOW_RATE_PURGE_AIR_ML_MIN          300                                                ///< Blood pump fast flow rate to fill fluid.
 #define BLOOD_PUMP_SLOW_FLOW_RATE_PURGE_AIR_ML_MIN          150                                                ///< Blood pump slow flow rate after fluid reach lower level of air trap sensor.
 #define BLOOD_PUMP_SALINE_FLOW_RATE_PURGE_AIR_ML_MIN        200                                                ///< Blood pump very slow flow rate during prime saline dialyzer state
-#define BLOOD_PUMP_FLOW_RATE_CIRC_BLOOD_CIRCUIT_ML_MIN      150                                                ///< Blood pump flow rate during prime recirculate blood circuit state.
+#define BLOOD_PUMP_SLOW_FLOW_RATE_CIRC_BLOOD_CIRCUIT_ML_MIN 150                                                ///< Blood pump slow flow rate during prime recirculate blood circuit state.
+#define BLOOD_PUMP_FAST_FLOW_RATE_CIRC_BLOOD_CIRCUIT_ML_MIN 300                                                ///< Blood pump fast flow rate during prime recirculate blood circuit state.
 #define BLOOD_PUMP_FLOW_RATE_SALINE_DIALYZER_ML_MIN         300                                                ///< Blood pump flow rate during prime the saline dialyzer dialysate state.
 #define DIALYSATE_PUMP_PRIME_FLOW_RATE_ML_MIN               300                                                ///< Dialysate pump flow rate during priming fluid path.
 
@@ -531,7 +532,15 @@
         setValvePosition( VBV, VALVE_POSITION_B_OPEN );
         setValveAirTrap( STATE_CLOSED );
 
-        setBloodPumpTargetFlowRate( BLOOD_PUMP_FLOW_RATE_CIRC_BLOOD_CIRCUIT_ML_MIN, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+
+        if ( FALSE == primeFirstPurgePass )
+        {
+            setBloodPumpTargetFlowRate( BLOOD_PUMP_FAST_FLOW_RATE_CIRC_BLOOD_CIRCUIT_ML_MIN, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+        }
+        else
+        {
+            setBloodPumpTargetFlowRate( BLOOD_PUMP_SLOW_FLOW_RATE_CIRC_BLOOD_CIRCUIT_ML_MIN, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+        }
         noAirDetectedStartTime = getMSTimerCount();
         state = HD_PRIME_SALINE_CIRC_BLOOD_CIRCUIT_STATE;
     }