Index: firmware/App/Controllers/AirTrap.c
===================================================================
diff -u -rf2e5da3b659f99aaa0eec9174a472529cf11b95a -r2075fb989d74d881f2e73c19052aa32fa9d760a6
--- firmware/App/Controllers/AirTrap.c	(.../AirTrap.c)	(revision f2e5da3b659f99aaa0eec9174a472529cf11b95a)
+++ firmware/App/Controllers/AirTrap.c	(.../AirTrap.c)	(revision 2075fb989d74d881f2e73c19052aa32fa9d760a6)
@@ -51,12 +51,11 @@
 /// Air pump on delay after fill adjustment
 static const U32 AIR_PUMP_ON_DELAY_ADJUST_AFTER_FILL = ( AIR_PUMP_ON_DELAY_TIME_MS - ( 1 * MS_PER_SECOND ) );
 
-#define AIR_PUMP_MOTOR_FILL_PWM               58.8f                                               ///< Power level setting (PWM) in percentage for H12 air pump to fill (raise level) the air trap.
-#define AIR_PUMP_MOTOR_LOWER_PWM              23.5f                                               ///< Power level setting (PWM) in percentage for H12 air pump to lower the level of the air trap.
+#define AIR_PUMP_MOTOR_FILL_PWM               58.8F                                               ///< Power level setting (PWM) in percentage for H12 air pump to fill (raise level) the air trap.
+#define AIR_PUMP_MOTOR_LOWER_PWM              23.5F                                               ///< Power level setting (PWM) in percentage for H12 air pump to lower the level of the air trap.
 #define AIR_PUMP_MOTOR_MIN_PWM_OVERRIDE       60                                                  ///< Air pump motor minimum PWM to override.
 #define AIR_PUMP_MOTOR_MAX_PWM_OVERRIDE       250                                                 ///< Air pump motor maximum PWM to override.
 #define AIR_PUMP_MOTOR_MAX_PWM                255                                                 ///< Air pump motor maximum PWM.
-#define AIR_PUMP_MOTOR_PWM_HUNDRED_PCT        100.0f                                              ///< Percentage calculation constant
 /// from air pump manufacturer's data for pump current draw based on pump speed and venous pressure mmHg,
 /// the currently set air pump  duty cycle (raw PWM) = 0.0005x^2 + 0.2313x + 63.667, where x is H14 venous pressure in mmHg before air pump lower event
 #define QUADRATIC_COEFFICIENT                 0.005F                                              ///< X2 quadratic coefficient
@@ -347,7 +346,7 @@
     F32 h14Pressure = getFilteredVenousPressure();
     // the currently set P12 duty cycle (raw PWM) must be 0.0005x^2 + 0.2313x + 63.667, where x = H14 venous pressure in mmHg before air pump lower event
     F32 dutyCycle = ( ( QUADRATIC_COEFFICIENT  * ( h14Pressure * h14Pressure ) ) - ( LINEAR_COEFFICIENT * ( h14Pressure ) ) ) + CONSTANT_TERM;
-    dutyCycle = ( dutyCycle / AIR_PUMP_MOTOR_MAX_PWM ) * AIR_PUMP_MOTOR_PWM_HUNDRED_PCT;
+    dutyCycle = ( dutyCycle / AIR_PUMP_MOTOR_MAX_PWM ) * FRACTION_TO_PERCENT_FACTOR;
 
     return dutyCycle;
 }