Index: firmware/App/Modes/Prime.c
===================================================================
diff -u -rdb0d99aef65c058e7975a1ebcac0cf77e9a80849 -rbfb26b6a0dcb3fb91ebb4af759f11c774c5fc665
--- firmware/App/Modes/Prime.c	(.../Prime.c)	(revision db0d99aef65c058e7975a1ebcac0cf77e9a80849)
+++ firmware/App/Modes/Prime.c	(.../Prime.c)	(revision bfb26b6a0dcb3fb91ebb4af759f11c774c5fc665)
@@ -533,15 +533,11 @@
         setValvePosition( VBV, VALVE_POSITION_B_OPEN );
         setValveAirTrap( STATE_CLOSED );
 
+        setBloodPumpTargetFlowRate( BLOOD_PUMP_FAST_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 );
-        }
+        // Once the dialyzer is no longer dry from the first pass of purge air, we can set flow to the fast rate
+        // until we are in a new priming state.
+        primeFirstPurgePass = FALSE;
         noAirDetectedStartTime = getMSTimerCount();
         state = HD_PRIME_SALINE_CIRC_BLOOD_CIRCUIT_STATE;
     }
@@ -572,10 +568,6 @@
     {
         purgeAirValvesBloodPumpControl();
         purgeAirTimeOutStartTime = getMSTimerCount();
-        if ( TRUE == primeFirstPurgePass )
-        {
-            primeFirstPurgePass = FALSE;
-        }
         state = HD_PRIME_SALINE_PURGE_AIR_STATE;
     }