Index: firmware/App/Modes/BloodPrime.c
===================================================================
diff -u -rdb22e9d530c5c9d62b02e6dcc72ed96fb67c165a -r44a100f8e5210a02c23b8fcc4527d8e96d577381
--- firmware/App/Modes/BloodPrime.c	(.../BloodPrime.c)	(revision db22e9d530c5c9d62b02e6dcc72ed96fb67c165a)
+++ firmware/App/Modes/BloodPrime.c	(.../BloodPrime.c)	(revision 44a100f8e5210a02c23b8fcc4527d8e96d577381)
@@ -39,10 +39,13 @@
 // TODO - get from Systems when available
 #define TARGET_BLOOD_PRIME_VOLUME_ML               300.0                    ///< Target blood prime volume to prime the blood side circuit (in mL).
 #define MIN_RAMP_TIME_SEC                          60                       ///< Minimum ramp time for blood prime (in seconds).
+
+#ifndef DISABLE_PUMP_FLOW_CHECKS
 /// Maximum blood prime volume measured by independent means (as % of target).
 static const F32 MAX_BLOOD_PRIME_SAFETY_VOLUME_ML = ( TARGET_BLOOD_PRIME_VOLUME_ML * 1.2 );
 /// Minimum blood prime volume measured by independent means (as % of target).
 static const F32 MIN_BLOOD_PRIME_SAFETY_VOLUME_ML = ( TARGET_BLOOD_PRIME_VOLUME_ML * 0.8 );
+#endif
 
 /// Initial flow rate for blood pump when starting blood prime operation.
 #define BLOOD_PRIME_INIT_BP_FLOW_RATE_ML_MIN       100
@@ -206,9 +209,9 @@
 {
     BLOOD_PRIME_STATE_T result = BLOOD_PRIME_RAMP_STATE;
 
-    // update blood prime volume delivered so far
+    // Update blood prime volume delivered so far
     cumulativeBloodPrimeVolume_mL += ( getMeasuredBloodFlowRate() * BLOOD_PRIME_FLOW_INTEGRATOR );
-    // update independent calculated safety volume delivered so far
+    // Update independent calculated safety volume delivered so far
     bloodPrimeMotorCount = u32BiDiffWithWrap( bloodPrimeLastMotorCount, getBloodPumpMotorCount() ) / BP_HALL_EDGE_COUNTS_PER_REV;
     bloodPrimeVolumeDelivered_Safety = ( (F32)bloodPrimeMotorCount * VOLUME_PER_BP_MOTOR_REV_ML );  // TODO - include upstream pressure compensation to this calc
 
@@ -240,9 +243,14 @@
         // ramp blood pump on ramp interval
         if ( ++bloodPrimeRampControlTimerCtr >= BLOOD_PRIME_RAMPING_INTERVAL )
         {
+            U32 setBPRate = getTreatmentParameterU32( TREATMENT_PARAM_BLOOD_FLOW );
+
             bloodPrimeRampControlTimerCtr = 0;
-            bloodPrimeRampFlowRate_mL_min += bloodPrimeRampStep_mL;
-            setBloodPumpTargetFlowRate( (U32)bloodPrimeRampFlowRate_mL_min, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+            if ( bloodPrimeRampFlowRate_mL_min < (F32)setBPRate )
+            {
+                bloodPrimeRampFlowRate_mL_min += bloodPrimeRampStep_mL;
+                setBloodPumpTargetFlowRate( (U32)bloodPrimeRampFlowRate_mL_min, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+            }
         }
     }