Index: firmware/App/Modes/ModeDrain.c
===================================================================
diff -u -rdc0d9b087c609e71cacdb7f0395cccf29d749c00 -rcc398b14ccf518f350b57fb5cb8728e5c908bd1e
--- firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision dc0d9b087c609e71cacdb7f0395cccf29d749c00)
+++ firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision cc398b14ccf518f350b57fb5cb8728e5c908bd1e)
@@ -22,8 +22,8 @@
 #include "OperationModes.h"
 #include "Pressures.h"
 #include "Reservoirs.h"
-#include "Valves.h"
 #include "TemperatureSensors.h"
+#include "Valves.h"
 
 /**
  *  @addtogroup DGDrainMode
@@ -44,10 +44,10 @@
 
 /*********************************************************************//**
  * @brief
- * The initOpParamsMode function initializes the Drain Mode module.
+ * The initDrainMode function initializes the drain mode module.
  * @details
  * Inputs : none
- * Outputs : Operating Parameters Mode module initialized.
+ * Outputs : drainState
  * @return none
  *************************************************************************/
 void initDrainMode( void )
@@ -57,11 +57,10 @@
 
 /*********************************************************************//**
  * @brief
- * The transitionToDrainMode function prepares for transition to drain \n
- * mode.
+ * The transitionToDrainMode function prepares for transition to drain mode.
  * @details
  * Inputs : none
- * Outputs :
+ * Outputs : Drain mode initialized
  * @return none
  *************************************************************************/
 void transitionToDrainMode( void )
@@ -76,18 +75,19 @@
 
 /*********************************************************************//**
  * @brief
- * The execDrainMode function executes the Drain Mode state machine.
+ * The execDrainMode function executes the drain mode state machine.
  * @details
- * Inputs : none
- * Outputs :
+ * Inputs : drainState
+ * Outputs : Check water quality, drain mode state machine executed
  * @return current state.
  *************************************************************************/
 U32 execDrainMode( void )
 {
-    // check inlet water conductivity, temperature, and pressure
-    checkInletWaterConductivity( drainState );
+    // check inlet water conductivity, temperature, pressure, and RO rejection ratio
+    checkInletWaterConductivity();
     checkInletWaterTemperature();
     checkInletPressure();
+    checkRORejectionRatio();
 
     // execute current drain state
     switch ( drainState )
@@ -111,11 +111,10 @@
 
 /*********************************************************************//**
  * @brief
- * The handleDrainState function handles the drain state  of the Drain Mode \n
- * state machine.
+ * The handleDrainState function handles the drain state  of the drain mode state machine.
  * @details
  * Inputs : none
- * Outputs :
+ * Outputs : Drain out from reservoir
  * @return the next state
  *************************************************************************/
 static DG_DRAIN_STATE_T handleDrainState( void )
@@ -141,8 +140,7 @@
 
 /*********************************************************************//**
  * @brief
- * The getCurrentDrainState function returns the current state of the \n
- * drain mode.
+ * The getCurrentDrainState function returns the current state of the drain mode.
  * @details
  * Inputs : drainState
  * Outputs : none