Robo_Eng_13 is correct. Make sure there is no motion in the "T_Clean" program. On the pendent, press select, cursor to the program, and select detail. Cursor down and onto the number 1 which is followed by a bunch of asterisks (*****). Change the number 1 to an asterick. You should now be able to execute your code as expected.
If you have, and need, motion in both programs, you would need to configure the robot differently. If you have an 7th axis of some sort, you could set it up as an auxiliary axis (separate motion group). I'm a tad rusty on the subject, as I haven't touched anything similar in a while though.