Index: firmware/App/Drivers/GLXferPump.c
===================================================================
diff -u -re6831fb6922ce22771e28b9c13dc2a9145c35ee6 -r52c71d1f7ca375d7d08829a92ccf3f6363fe22a2
--- firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision e6831fb6922ce22771e28b9c13dc2a9145c35ee6)
+++ firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision 52c71d1f7ca375d7d08829a92ccf3f6363fe22a2)
@@ -63,7 +63,7 @@
  * @details \b Message \b Sent: MSG_ID_TD_EVENT if changing air pump power level.
  * @details \b Inputs: none
  * @details \b Outputs: currentAirPumpMotorPowerLevel
- * @param power Power level for air pump (0..2=off, 3..100=lower to higher power level).
+ * @param power Power level for air pump (0=off, 1..100=lower to higher power level).
  * @return none.
  *************************************************************************/
 void setAirPumpMotorPower( F32 power )
@@ -111,7 +111,7 @@
     }
     else
     {
-        realRPM = ( ( ( F32 )AIR_PUMP_RPM_FACTOR ) / ( F32 )( fpgaRPM * 1e-6 ) );
+        realRPM = ( ( ( F32 )AIR_PUMP_RPM_FACTOR ) / ( F32 )( fpgaRPM * 1e-6F ) );
     }
 
     return ( U16 )realRPM;
@@ -132,8 +132,8 @@
     // Clamp input to 0-100%
     power = RANGE( percentage, AIR_PUMP_DUTY_CYCLE_MIN, AIR_PUMP_DUTY_CYCLE_MAX );
 
-    // Calculate 0-250 value (250 * power / 100)
-    return (U08)( ceilf ( ( ( power * (F32)AIR_PUMP_MAX_PWM ) / FRACTION_TO_PERCENT_FACTOR ) ) );
+    // Calculate 0-250 scalar value = ( power / 100 ) * 250
+    return (U08)( ceilf ( ( ( power / FRACTION_TO_PERCENT_FACTOR ) / (F32)AIR_PUMP_MAX_PWM ) ) );
 }