Originally Posted by
massplumber2008
Yeah, that hole in the cover DEFINITELY needs to be closed off (for now, plug it with a towel). If you are lucky, a local plumbing store will have the correct rubber plug for you. Here, you want the split rubber plug for a cord to pass through, and since you have two cords you will need drill an extra hole in the cover so the 2nd cord can pass through the rubber plug and still remain gas tight (they don't sell two hole rubber plugs). Keep the hole slightly smaller than the cord to keep it gas-tight. Grundfos has a bolt and gasket kit (see image)...you need the rubber plug in the center of the picture, but you may have to buy the whole kit. Other than that, you can purchase some thick CORK and maybe you can make a plug and silicone it in yourself!
In terms of the condensate drain in the floor...check that there is a PTRAP underground by shining a flashlight into the drain in the floor and see if there is standing water...there definitely should be if this condensate drain is connected to the sewage ejector.
Mark