Correctly identify obviously dying, dead or endangered leaves
Identify dead leaves at bottom and outside of growth
If not on bottom level, place trays on light level underneath rail you are working on
With hands, physically pull out dead leaves, let them fall into trays, without damaging live plants
If necessary, make sure feedline is secure, then lightly shake rail from feed end to dislodge dead matter.
Clean up catch trays and empty into compost

Pull Raft out if you can’t access the plants
Remove dead leaves by hand, dispose in compost
Use vacuum with small-brush fitting on raft (not on plants) to suck up dead matter

Prune and remove leaves by hand
Let fall to floor of tent
Pick up by hand and dispose of in compost