Index: firmware/App/Controllers/DialOutFlow.c
===================================================================
diff -u -r933a18d740285e70be9d00696ed0f5a5381bc8e4 -rb01542f8e4ef5a29e9b08fc0d465478de516bf02
--- firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision 933a18d740285e70be9d00696ed0f5a5381bc8e4)
+++ firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision b01542f8e4ef5a29e9b08fc0d465478de516bf02)
@@ -153,7 +153,7 @@
 static BOOL dopStopAtHomePosition = FALSE;                                                  ///< stop dialysate outlet pump at next home position
 static U32 dopHomeStartTime = 0;                                                            ///< when did dialysate outlet pump home command begin? (in ms)
 
-static U16 dopLastMotorHallSensorCounts[ DOP_SPEED_CALC_BUFFER__LEN ];                      ///< last hall sensor count for the blood pump motor
+static U16 dopLastMotorHallSensorCounts[ DOP_SPEED_CALC_BUFFER__LEN ];                      ///< last hall sensor count for the dialysate outlet pump motor
 static U32 dopMotorSpeedCalcIdx = 0;                                                        ///< index into 1 second buffer of motor speed hall sensor counts
 static U32 dopMotorSpeedCalcTimerCtr = 0;                                                   ///< counter determines interval for calculating dialysate outlet pump motor speed from hall sensor count.
 
@@ -615,20 +615,22 @@
         {
             F32 refVol = getTotalTargetDialOutUFVolumeInMl();
             F32 totVol = getTotalMeasuredUFVolumeInMl();
-            F32 newPWM;
-            F32 deltaPWM;
+            F32 newPWMDutyCyclePct;
+            F32 deltaPWMDutyCyclePct;
 
             // get new PWM from PI controller
-            newPWM = runPIController( PI_CONTROLLER_ID_ULTRAFILTRATION, refVol, totVol );
+            newPWMDutyCyclePct = runPIController( PI_CONTROLLER_ID_ULTRAFILTRATION, refVol, totVol );
             // limit PWM change to max
-            deltaPWM = newPWM - dialOutPumpPWMDutyCyclePctSet;
-            if ( fabs( deltaPWM ) > MAX_DIAL_OUT_PUMP_PWM_STEP_UP_CHANGE )
+            deltaPWMDutyCyclePct = newPWMDutyCyclePct - dialOutPumpPWMDutyCyclePctSet;
+            if ( fabs( deltaPWMDutyCyclePct ) > MAX_DIAL_OUT_PUMP_PWM_STEP_UP_CHANGE )
             {
-                newPWM = ( deltaPWM < 0.0 ? dialOutPumpPWMDutyCyclePctSet - MAX_DIAL_OUT_PUMP_PWM_STEP_UP_CHANGE : dialOutPumpPWMDutyCyclePctSet + MAX_DIAL_OUT_PUMP_PWM_STEP_UP_CHANGE );
+                newPWMDutyCyclePct = ( deltaPWMDutyCyclePct < 0.0 ? \
+                                       dialOutPumpPWMDutyCyclePctSet - MAX_DIAL_OUT_PUMP_PWM_STEP_UP_CHANGE : \
+                                       dialOutPumpPWMDutyCyclePctSet + MAX_DIAL_OUT_PUMP_PWM_STEP_UP_CHANGE );
             }
             // set new PWM
-            dialOutPumpPWMDutyCyclePctSet = newPWM;
-            setDialOutPumpControlSignalPWM( newPWM );
+            dialOutPumpPWMDutyCyclePctSet = newPWMDutyCyclePct;
+            setDialOutPumpControlSignalPWM( newPWMDutyCyclePct );
         }
         dopControlTimerCounter = 0;
     }
@@ -925,7 +927,6 @@
         {
             errorDialOutRotorSpeedPersistTimerCtr = 0;
         }
-
     }
     else
     {
@@ -991,6 +992,7 @@
  *                       GET SUPPORT FUNCTIONS
  *************************************************************************/
 
+
 /*********************************************************************//**
  * @brief
  * The getPublishDialOutFlowDataInterval function gets the dialysate out flow