Quote Originally Posted by itsiceman View Post
When you start messing with the cover that is part of the way the condensate drains and needs to be put back like you found it or you might develop a leak Taking the top off is the easiest way IMO but you'll probably give the customer a heart attack when they see it apart
You must be thinking about the fan plenum which is below the evaporator coil on the True prep units. Yes, those are part of the condensate drainage and there's rarely a need to remove one of those...except I have seen a lot of them rotted out where the plenum seals to the bottom pan, creating some bad condensate leaks. Then I simply get them warm & dry and reseal with lots of silicon.