Index: firmware/App/Modes/Prime.c
===================================================================
diff -u -r80d2387215e98241cbadf36eb8d42e79812ec578 -rd4a4438fece666d728dc9825157af6ca99be8eb9
--- firmware/App/Modes/Prime.c	(.../Prime.c)	(revision 80d2387215e98241cbadf36eb8d42e79812ec578)
+++ firmware/App/Modes/Prime.c	(.../Prime.c)	(revision d4a4438fece666d728dc9825157af6ca99be8eb9)
@@ -87,7 +87,7 @@
       { 120, 257 },                                             // DIALYZER_TYPE_BBRAUN_PRO_19H
       {  87, 233 },                                             // DIALYZER_TYPE_FRESENIUS_OPTIFLUX_F160NRE
       { 102, 280 },                                             // DIALYZER_TYPE_FRESENIUS_OPTIFLUX_F180NRE
-      { 117, 327 } };                                           // DIALYZER_TYPE_FRESENIUS_OPTIFLUX_F200NRE
+      { 113, 300 } };                                           // DIALYZER_TYPE_FRESENIUS_OPTIFLUX_F200NRE
 
 static U32 primeDialysateDialyzerTimeLimit;                     ///< Time limit in msec for priming dialysate dialyzer path.
 static U32 primeSalineDialyzerTimeLimit;                        ///< Time limit in msec for priming saline dialyzer path.
Index: firmware/App/Modes/Rinseback.c
===================================================================
diff -u -rcbaa57803fa8359407a799fca0cde6ae2c486bd7 -rd4a4438fece666d728dc9825157af6ca99be8eb9
--- firmware/App/Modes/Rinseback.c	(.../Rinseback.c)	(revision cbaa57803fa8359407a799fca0cde6ae2c486bd7)
+++ firmware/App/Modes/Rinseback.c	(.../Rinseback.c)	(revision d4a4438fece666d728dc9825157af6ca99be8eb9)
@@ -210,8 +210,8 @@
 static void setupForRinsebackDelivery( U32 rate )
 {
     // Open VBA and VBV valves to allow flow from saline bag and to patient venous line
-    setValvePosition( VBA, VALVE_POSITION_C_CLOSE );  // draw from saline back instead of patient
-    setValvePosition( VBV, VALVE_POSITION_B_OPEN );   // return to patient
+    setValvePosition( VBA, VALVE_POSITION_B_OPEN );  // patient will have removed arterial line from fistula and connected it to RB port to saline - so we will get saline from arterial line by opening
+    setValvePosition( VBV, VALVE_POSITION_B_OPEN );  // return to patient
     // Start blood pump at rinseback flow rate
     setBloodPumpTargetFlowRate( rate, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_CLOSED_LOOP );
     // Start air trap leveling control