This question needs to be clarified since it can be taken in two different ways. Which memory do you want to clear; Flash or RAM?
Assuming that you want to clean up the flash, to remove extraneous files, you can do this with any ftp client. Simply FTP into the module and start deleting files that you created and that you no longer need.
Alternatively, if you are talking about cleaning up the RAM, the easiest thing to do is power-cycle the module. When the module re-boots, the RAM will be totally cleared of any thing that was in memory from your programs. Note: this method will obviously not work as something to do while running a deployed program but will work fine when doing debugging and testing of multiple VI's. Becuase LabVIEW handles most memory m
anagement for you, there is no way to selectively clean/unload portions of memory such as a "Dealloc".
Regards,
Aaron
LabVIEW Champion, CLA, CPI