Index: firmware/App/Modes/ModeFill.c
===================================================================
diff -u -r8074ecece0b11532c173ad951a98036f0c54ca52 -rc6fabda53e8b3dd9515b843abf5843f6daa6d8b1
--- firmware/App/Modes/ModeFill.c	(.../ModeFill.c)	(revision 8074ecece0b11532c173ad951a98036f0c54ca52)
+++ firmware/App/Modes/ModeFill.c	(.../ModeFill.c)	(revision c6fabda53e8b3dd9515b843abf5843f6daa6d8b1)
@@ -60,7 +60,7 @@
 #define FILL_MODE_DATA_PUB_INTERVAL                     ( MS_PER_SECOND / TASK_GENERAL_INTERVAL )            ///< Interval (ms/task time) at which the fill mode data is published on the CAN bus.
 #define DIALYSATE_FILL_TIME_OUT                         ( 5 * SEC_PER_MIN * MS_PER_SECOND )                  ///< Time out period when reservoir is not filled with correct dialysate.
 
-#define CONCENTRATE_PUMP_PRIME_INTERVAL                 ( 3 * MS_PER_SECOND / TASK_GENERAL_INTERVAL )        ///< Persistent time interval for concentrate pumps prime.
+#define CONCENTRATE_PUMP_PRIME_INTERVAL                 ( 10 * MS_PER_SECOND / TASK_GENERAL_INTERVAL )       ///< Persistent time interval for concentrate pumps prime.
 
 #define FLOW_INTEGRATED_VOLUME_CHECK_TOLERANCE          0.1F                                                 ///< Flow integrated volume has 10% tolerance compare to load cell reading.