Index: firmware/App/Controllers/MixingControl.c
===================================================================
diff -u -r3cafed12c435f95be8ae38a8e5a5cf20ec6b706f -ra00cc8561b1916c257c9e9dbd6934de002ecdd25
--- firmware/App/Controllers/MixingControl.c	(.../MixingControl.c)	(revision 3cafed12c435f95be8ae38a8e5a5cf20ec6b706f)
+++ firmware/App/Controllers/MixingControl.c	(.../MixingControl.c)	(revision a00cc8561b1916c257c9e9dbd6934de002ecdd25)
@@ -443,12 +443,12 @@
 {
     F32 tdDialysateFlowRate = 0.0F;
     F32 balChamberSwitchingFreq = 0.0F;
-    U32 balChamberSwitchingPeriod = 0;
+    F32 balChamberSwitchingPeriod = 0;
 
     tdDialysateFlowRate = getTDDialysateFlowrate();
 
     balChamberSwitchingFreq = tdDialysateFlowRate / 30.0;
-    balChamberSwitchingPeriod = ( SEC_PER_MIN ) / (U32)balChamberSwitchingFreq;
+    balChamberSwitchingPeriod = (F32)( SEC_PER_MIN ) / balChamberSwitchingFreq;
 
     // For bicarb control period, we are using 3 cycles of balancing chamber switching period (for ex: At Qd = 600, switching period = 3sec, so acid control interval = 3*3 = 9sec
     // For acid control period, we are using 5 cycles of balancing chamber switching period (for ex: At Qd = 600, switching period = 3sec, so bicarb control interval = 3*5 = 15sec