Index: firmware/App/Controllers/SubstitutionPump.c
===================================================================
diff -u -r43c231c0f9a56e2481f94cdbc51f45ef1af23c46 -r9e088e27aa474aeb3748d43ab8d09c93ed848ac2
--- firmware/App/Controllers/SubstitutionPump.c	(.../SubstitutionPump.c)	(revision 43c231c0f9a56e2481f94cdbc51f45ef1af23c46)
+++ firmware/App/Controllers/SubstitutionPump.c	(.../SubstitutionPump.c)	(revision 9e088e27aa474aeb3748d43ab8d09c93ed848ac2)
@@ -60,8 +60,8 @@
 #define SUBSTITUTION_PUMP_RAMP_SPEED_INCREMENT               5.0F                                               ///< Speed increase (mL/min) when controlling Substitution pump to target step speed.
 
 #define SUBSTITUTION_PUMP_CNT_TO_RPM(cnt)                    ( 60 / ( cnt * 0.0001 ) )                          ///< Conversion function for hall sensor cnt to rpm. rpm = 60/(cnt*100uS).
-#define MAX_ALLOWED_ML_OUT_OF_RANGE                          20                                                 ///< Maximum allowed mL/min out of range from target ml/min in open loop.
-#define RPM_OUT_OF_RANGE_TIME_OUT                            ( 5 * MS_PER_SECOND )                              ///< Open loop RPM out of range time out in ms.
+#define MAX_ALLOWED_ML_OUT_OF_RANGE                          10                                                 ///< Maximum allowed mL/min out of range from target ml/min in open loop.
+#define RPM_OUT_OF_RANGE_TIME_OUT                            ( 2 * MS_PER_SECOND )                              ///< Open loop RPM out of range time out in ms.
 
 static const U32 SUBSTITUTION_PUMP_CONTROL_FORWARD = SUBSTITUTION_PUMP_CONTROL_SLEEP_OFF  |
                                                     SUBSTITUTION_PUMP_CONTROL_NOT_RESET   |