Index: firmware/App/Drivers/GLXferPump.c
===================================================================
diff -u -ra25d5c24569e3d77487a75498a4e10dd83ada9c4 -r3074682de43568567f244e2663d1f75b7e6ea85e
--- firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision a25d5c24569e3d77487a75498a4e10dd83ada9c4)
+++ firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision 3074682de43568567f244e2663d1f75b7e6ea85e)
@@ -30,8 +30,6 @@
 
 #define AIR_PUMP_PWM_TIME           20                ///< Time (in 10ns increments) per PWM register count for the air pump = 20 kHz.
 #define AIR_PUMP_MAX_PWM            255               ///< Air pump maximum PWM.
-#define AIR_PUMP_DUTY_CYCLE_MIN     0.0F              ///< Air pump minimum duty cycle in percentage
-#define AIR_PUMP_DUTY_CYCLE_MAX     100.0F            ///< Air pump maximum duty cycle in percentage
 
 // ********** private data **********