Just purchased a 2013 Cougar 21 RBSWE and need help figuring out the grey tanks. My understanding is their is a grey for the galley and one for the shower, so 2 grey tanks with what I would assume 2 valves.
Here is some background on my quandary. After getting the trailer home I sanitized the fresh water tank and ran water through the faucets for this task. Afterwards I wanted to drain the grey tanks with what I'm glad was plain water. As soon as I removed the waste discharge cover I receive a gush of water. 1st thought was a valve is open. I check the grey and black at the discharge and they are both closed. I then figure the grey for the galley is open, but I can't find it.
Attached are pictures of what I see. The slide was open while I did the walk through at the dealership and the dealer pointed to where the valve was, huge mistake on my part not forcing him to point it out.
Does anybody know if I'm missing something here? I haven't contacted the dealership yet, no service department on the weekends. Hoping one of the guru's here might have some ideas.