Index: firmware/App/Modes/BloodPrime.c
===================================================================
diff -u -rcc4f8440e8ad7fa8f2ced2467d922be7422c344c -rfe44ecec55830a90280aec6796974e273982047a
--- firmware/App/Modes/BloodPrime.c	(.../BloodPrime.c)	(revision cc4f8440e8ad7fa8f2ced2467d922be7422c344c)
+++ firmware/App/Modes/BloodPrime.c	(.../BloodPrime.c)	(revision fe44ecec55830a90280aec6796974e273982047a)
@@ -7,8 +7,8 @@
 *
 * @file    BloodPrime.c
 *
-* @author  (last)      Dara Navaei
-* @date    (last)      03-Mar-2022
+* @author  (last)      Darren Cox
+* @date    (last)      10-Mar-2022
 *
 * @author  (original)  Sean Nash
 * @date    (original)  06-Feb-2021
@@ -36,8 +36,9 @@
 
 // ********** private definitiions ***********
 
-#define TUBING_BLOOD_PRIME_VOLUME_ML                80.0                    ///< Target blood prime volume to prime the blood side circuit (in mL).
-#define MAX_BLOOD_PRIME_VOLUME_ERROR_ML             60.0                    ///< Maximum error in total additional blood prime volume (20% of total).
+#define TUBING_BLOOD_PRIME_VOLUME_ML                80.0F                   ///< Target blood prime volume to prime the blood side circuit (in mL).
+#define DEFAULT_BLOOD_PRIME_VOLUME_ML               300.0F                  ///< Default blood prime volume (in mL).
+#define MAX_BLOOD_PRIME_VOLUME_ERROR_ML             60.0F                   ///< Maximum error in total additional blood prime volume (20% of total).
 #define MIN_RAMP_TIME_SEC                           60                      ///< Minimum ramp time for blood prime (in seconds).
 
 /// Initial flow rate for blood pump when starting blood prime operation.
@@ -50,7 +51,7 @@
 #define BLOOD_PRIME_DATA_PUBLISH_INTERVAL          ( MS_PER_SECOND / TASK_GENERAL_INTERVAL )
 
 /// Multiplier to convert flow (mL/min) into volume (mL) for period of general task interval.
-static const F32 BLOOD_PRIME_FLOW_INTEGRATOR = 1.0 / (F32)( SEC_PER_MIN * ( MS_PER_SECOND / TASK_GENERAL_INTERVAL ) );
+static const F32 BLOOD_PRIME_FLOW_INTEGRATOR = 1.0F / (F32)( SEC_PER_MIN * ( MS_PER_SECOND / TASK_GENERAL_INTERVAL ) );
 
 // ********** private data **********
 
@@ -93,7 +94,7 @@
     bloodPrimePublishTimerCtr = BLOOD_PRIME_DATA_PUBLISH_INTERVAL;
     cumulativeBloodPrimeVolume_mL.data = 0.0;
     expectedBloodPrimeVolume_mL = 0.0;
-    bloodPrimeTargetVolume_mL = 300.0;
+    bloodPrimeTargetVolume_mL = DEFAULT_BLOOD_PRIME_VOLUME_ML;
     resetBloodPrimeFlags();
 
     bloodPrimeTargetVolume_mL = (F32)TUBING_BLOOD_PRIME_VOLUME_ML + (F32)getDialyzerBloodVolume();
@@ -237,10 +238,14 @@
         cmdStopDGTrimmerHeater();       // Stop trimmer heater - dialysis sub-mode will restart as appropriate
     }
     // Is blood prime taking too long based on set BP rate?
-    else if ( ( fabs( expectedBloodPrimeVolume_mL - getBloodPrimeVolume() ) > MAX_BLOOD_PRIME_VOLUME_ERROR_ML ) &&
-              ( getSoftwareConfigStatus( SW_CONFIG_DISABLE_PUMP_FLOW_CHECKS ) != SW_CONFIG_ENABLE_VALUE ) )
+    else if ( fabs( expectedBloodPrimeVolume_mL - getBloodPrimeVolume() ) > MAX_BLOOD_PRIME_VOLUME_ERROR_ML )
     {
-        activateAlarmNoData( ALARM_ID_BLOOD_PRIME_VOLUME_CHECK_FAILURE );
+#ifndef _RELEASE_
+        if ( getSoftwareConfigStatus( SW_CONFIG_DISABLE_PUMP_FLOW_CHECKS ) != SW_CONFIG_ENABLE_VALUE )
+#endif
+        {
+            activateAlarmNoData( ALARM_ID_BLOOD_PRIME_VOLUME_CHECK_FAILURE );
+        }
     }
     else
     {
@@ -291,7 +296,6 @@
         bloodPrimePublishTimerCtr = 0;
         data.targetBloodPrimeVolumeMl = bloodPrimeTargetVolume_mL;
         data.deliveredBloodPrimeVolumeMl = getBloodPrimeVolume();
-        data.unused = 0.0; // TODO - remove later when UI no longer looking for this field.
         broadcastData( MSG_ID_HD_BLOOD_PRIME_PROGRESS, COMM_BUFFER_OUT_CAN_HD_BROADCAST, (U08*)&data, sizeof( BLOOD_PRIME_DATA_PAYLOAD_T ) );
     }
 }