Index: leahi_dialin/td/modules/air_pump.py
===================================================================
diff -u -r11caf0a763fddde6ce2fecee1bee80699d8f6c44 -rcd27cd828b37e7e0c8a77b63594456f308887ae8
--- leahi_dialin/td/modules/air_pump.py	(.../air_pump.py)	(revision 11caf0a763fddde6ce2fecee1bee80699d8f6c44)
+++ leahi_dialin/td/modules/air_pump.py	(.../air_pump.py)	(revision cd27cd828b37e7e0c8a77b63594456f308887ae8)
@@ -25,6 +25,7 @@
 from leahi_dialin.utils.base import AbstractSubSystem, publish
 from leahi_dialin.utils.conversions import integer_to_bytearray
 
+MAX_AIR_PUMP_POWER_LEVEL = 255  #Maximum air pump power allowed
 
 class TDAirPump(AbstractSubSystem):
     """
@@ -107,8 +108,6 @@
         @return: 1 if successful, zero otherwise
         """
 
-        MAX_AIR_PUMP_POWER_LEVEL = int(255)
-
         if dutyCycle < 0 or dutyCycle > 100:
             return 0