Index: firmware/App/Modes/Prime.c
===================================================================
diff -u -rfbd3284600db524ff28f70e5c573fa4ee14c1e70 -r27d588d222fbaea5e324e735d70509d37f90e782
--- firmware/App/Modes/Prime.c	(.../Prime.c)	(revision fbd3284600db524ff28f70e5c573fa4ee14c1e70)
+++ firmware/App/Modes/Prime.c	(.../Prime.c)	(revision 27d588d222fbaea5e324e735d70509d37f90e782)
@@ -428,7 +428,7 @@
 
     signalDialOutPumpHardStop();
     signalDialInPumpHardStop();
-    if (FALSE == primeFirstPurgePass )
+    if ( FALSE == primeFirstPurgePass )
     {
         setBloodPumpTargetFlowRate( BLOOD_PUMP_FAST_FLOW_RATE_PURGE_AIR_ML_MIN, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
     }
@@ -513,7 +513,14 @@
 
     if ( AIR_TRAP_LEVEL_FLUID == getAirTrapLevel( AIR_TRAP_LEVEL_SENSOR_LOWER ) )
     {
-        setBloodPumpTargetFlowRate( BLOOD_PUMP_SLOW_FLOW_RATE_PURGE_AIR_ML_MIN, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+        if ( FALSE == primeFirstPurgePass )
+        {
+            setBloodPumpTargetFlowRate( BLOOD_PUMP_FAST_FLOW_RATE_PURGE_AIR_ML_MIN, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+        }
+        else
+        {
+            setBloodPumpTargetFlowRate( BLOOD_PUMP_SLOW_FLOW_RATE_PURGE_AIR_ML_MIN, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+        }
     }
 
     if ( AIR_TRAP_LEVEL_FLUID == getAirTrapLevel( AIR_TRAP_LEVEL_SENSOR_UPPER ) )