How to dump your grey and black water tanks on a Roadtrek Simplicity using the Macerator pump.

A step by step tutorial on how to empty the black and grey tanks using the macerator pump on my 2017 Roadtrek Simplicity.

[@dannidunn9302]

Really helpful video. Thanks.

[@sghsstuff]

Why don’t you close the black valve before opening the grey. I was told you should always close black before opening grey to prevent cross contamination. Please clarify? Thank you

[@myclassbrvadventures9155]

Hi there, I’m not sure there is a right or wrong way to do this procedure. My Roadtrek dealer suggested I leave the black tank open while I dump the grey as this helps clean out the macerator hose and system from any material that may still be present from the initial black tank dump. My Roadtrek dealer did not suggest to me there would be any issues for cross contamination as the tanks are completely separate. I’ve also added a video tutorial from a RV rental company I found some years ago on KZbin. At minute 7:48 the host also suggests to leave the black tank valve open while you dump the grey tank but gives no explanation why. Have a look at this video as well. If you feel better about closing the black tank valve before you move to the grey then I would suggest you continue doing it that same way. You end up with the same results. See link below. Good luck! kzbin.info/www/bejne/q5DZqZashtN2n7s

[@sghsstuff]

@@myclassbrvadventures9155 perfect. Thanks

[@bruceden1]

the red button/pump will not turn on the maserator. what to do? does the vehicle have to be running?

[@myclassbrvadventures9155]

Your vehicle doesn’t need to be on but coach battery needs to be on. If your discharge button isn’t working I would suggest you check to see if your coach battery is on. If it is, it could be a bad fuse. I would also suggest you become a member of the Roadtrek Facebook group. There’s a lot of good information there!

[@bruce5133]

@@myclassbrvadventures9155 thank you - will join the group

[@bruceden1]

why doesn't the on board computer turn on?

[@myclassbrvadventures9155]

I’m sorry, I’m not clear on your question? I’m not sure what your referring to when you say the “onboard computer”?

[@dennim3286]

Roadtrek directions tell you to close the black tank valve before opening the gray. You do not want cross contamination. One reason is water from the gray tank can slosh into the shower pan or into your drains. If you make instructional videos please do a little research before giving wrong info.

[@myclassbrvadventures9155]

Hi @dennim3286, thank you for your comment. When purchasing my Simplicity, my Roadtrek dealer explained to me that leaving the black tank open while emptying the grey tank will help clean out the waste. When I asked about cross contamination doing it this way. My dealer suggested I remember the black tank is already emptied because you’ve dump it first. Now, can there be some waste material left over from your initial dump? Possibly, but the force and gravity from emptying the grey tank would ensure that waste material would not find its way back into the grey tank. I’ve been doing it this way for several years and have never had and issue with cross contamination. With that, my video tutorial is not the only video showing this method. I’ve added an instructional video from an RV rental company that rents out Simplicity’s in the attachment below.. Take note and listen carefully at exactly minute 9:00. The demonstration also shows to leave the black tank open. Ultimately, if you wish to close your black tank first, then do so. The ultimate goal is to empty the tanks after all. Thank you for commenting on this video, I will leave your comment and my response open to the public to read. kzbin.info/www/bejne/q5DZqZashtN2n7s