u/rossitopapito

Working on restoring this kegerator I picked up and trying to identify this line/tube. From what I can tell, it runs down from the Budweiser tower area and into this insulated box/reservoir section that has liquid in it.

I’m trying to figure out:
Is this just the drain line from the drip tray/spill catcher?
Or is it part of the glycol/air-cooling system for the tower lines?
If I’m no longer using that Budweiser tower, do I still need this line connected?

The reason I’m confused is because it doesn’t seem like spilled beer would intentionally drain into that insulated/liquid-filled compartment. The line also looks larger/heavier than I’d expect for a simple drip tray drain.

Photos attached for reference. Any insight would be appreciated.