Index: firmware/App/Drivers/GLXferPump.c
===================================================================
diff -u -r539d38e6125069ea8aa908631e62fd8adf05459c -r3e6b89e98c3725c7afd94a3c37fe3efce3fde65f
--- firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision 539d38e6125069ea8aa908631e62fd8adf05459c)
+++ firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision 3e6b89e98c3725c7afd94a3c37fe3efce3fde65f)
@@ -30,7 +30,6 @@
 
 // ********** private definitions **********
 
-#define AIR_PUMP_PWM_TIME           20                ///< Time (in 10ns increments) per PWM register count for the air pump = 20 kHz.
 #define AIR_PUMP_RPM_FACTOR         60                ///< Air pump rpm pump factor
 #define TEN_MICRO                   ( 10 * 1E-6F )    ///< 10 X 10^-6
 #define MOTOR_RPM_ZERO_RAW          0xFFFFU           ///< Air pump Zero RPM