See: Chemtek W1 HELP For why you might still want to chill your solvent before CRC
As far as “is a chiller necessary”, no. You will benefit from taking the heat your collection and pump add to your solvent back out, but that can trivially be achieved with a coil in cold water (or a dry ice slurry if you must).
i was just thinking it might raise the pressure in the recovery too high. trs21 pushes it out hot. but if i upgrade my coil to larger spec . i wanted to upgrade to somethign that can hold 100 lbs of solvent.
so its not nessesary for active recovery with a coil? it wont run the pressure up too high?
also how high is too high for psi on the recovery side/