Shower Drain

[MovingRock76]

Hello all
We've just become the proud owner of our very first motorhome, a 2006 Bessacarr E725. Just had our first weekend away and so naturally wanted to try everything out, including the shower, but the water didn't drain very well. We had used our levelling blocks on site but weren't quite level so potentially a gravity problem. In the case its not that, my question is for recommendations for anything we can put down the drain to try and clean/unblock it. From questions by others I've gathered that your normal household product isn't friendly to the motorhome pipes and seals. Some have said soda crystals, white vinegar, boiling water etc. Is there something specific like Fenwicks pipe and tank cleaner that will do the job? Motorhome specific drain rod/brush available?
Looking for the easier answer before I have to start pulling anything apart.
Thanks

 

[stuartholmes]

If you have a friendly garage with a pit or hoist it would be much easier to do it that way. It will take just a few minutes.

Thanks, 'my' garage is very friendly when I take a car. Less so with hightops..
I did think of putting the van on ramps before crawling under but don't fret, I'm not going to. Probably find a small boy to do it for me...