We just istalled the Saniplus in our basement. the macerator pump is pretty loud when the toilet is flushed. Is there anyway of covering the box to muffle the sound?

I'm glad you asked today, and not 3 months ago!
We also have this model, and ours is hooked to a septic tank, and with a whole lot of trouble, I believe we have your answer.
It is: Toilet paper.
You can pull up the Sani-flush people on line, and they will help you disassemble your unit and clean it. You should find it bound up with a big wad of toilet paper. The newer toilet papers, particularly the softer/gentler/stronger ones, are more glue than paper, and will clog up everything. After our latest go-around a few months ago, we had to go to some stores and buy an assortment of toilet papers, and put samples in glass jars with water, and shake them, to see which would disintegrate, and which stayed together. Because of this, sounds like you will find this the problem. Best not push the motor, or it may burn up, and be quite expensive to fix.
Be blessed,

I worked on a lot of Saniflo products, they do not recommend using any products that have bleach or chlorine. Make sure the flapper inside the side inlet where the bath drains, is not obstructed.

If the apple core was right at the pump intake at the time the pump kicked on it very well may have been the problem. The pumps in those units are not the strongest in the world anyway. They are not made to grind up anything that has any bulk to it.

So the answer to the question in my opinion is yes. But you well want to keep a close eye on it for a while.

sounds like there could be a blockage inside which is effecting the pump or the float switch look on the saniflo website for instructions how to clean etc or phone there tec department

Typically on macerating or grinder pumps there is a small 1/2" breather hole on top of the lid, about the size of a dime or nickel. That breather hole must be kept plugged or seal cap. If left open, odor will escape through there. Make sure the pump is vented using an 1 1/2" vent pipe which must be vented to the open air so air can flow in and out of the vent pipe at all times. Also you might want to check for loose connection or waste water leaking from the pump, toilet or any of the connections.

I have included the installation instructions. It also includes an expanded veiw of the toilet. The troubleshooting area can give you ideas. From what I read, it is possible that something has feel into the grill. Hopefully this helps.
http://www.saniflo.com/pdf/install/PLUS_US.pdf

sorry Fran,that is what they run.thats just for the unit don't forget install cost too.good luck with this project.

Sounds like a restriction in the outlet pipe, the 2 galls from a flush are OK but the bath or shower is more, especiallly if you have flushed before you shower, try drain unblocking chemicals or flushing the outlet pipe with mains water from a hose

I believe you have a problem with a leak. The pump is filling back up. See is the water is leaking out somewhere. Hopefully, you don't have a leak under the house. The water coming into the pump is going somewhere when it comes on.

I think a small plastic item has dropped into my saniflo toilet it keeps maing a loud noise evey few minutes. hat should I do