View Full Version : MP40 - wet side won't turn

03/09/2017, 05:03 PM
So I bought a couple used MP40's today. Once fired up and works fine, the other not so much. This is probably user error.

So when I plug in the unit (dry side) you can hear it turning inside the housing & running fine. (for short intervals, low speed, trying to set the mode).

Then when I actually install it, and it attaches to the wet side, it clicks 1 time and it is like it can't spin the wet side. So then it flashes green and red. I changed wet sides and it does the same thing, so its not the wet side.

Am I doing something wrong?
It seems almost like the magnet is so strong it is pulling it against the plastic housing an getting stuck.


03/09/2017, 09:22 PM
I think you want the EcoTech forum here...


This is the Neptune Systems forum. Granted... there might be folks here that can help, but I think you'll do better over there!

03/09/2017, 10:51 PM
Remember that the dry and wet sides need to be a certain distance apart so that the magnetic force is within spec, and the proper spacer for your tank thickness should be used.

What model are you running?

03/10/2017, 07:03 PM
kurt_n, sorry you are correct. I was reading about the wxm and got carried away.... I'll ask
over there.

Breadman03, they are older MP40w models.

03/11/2017, 05:43 AM
Since they are older models, you have the pin spacers. Just in case you didn't have it, here (http://ecotechmarine.com/wp-content/uploads/2011/10/FULLMANUAL_Revision1.3.pdf) is the manual. Make sure that you have the proper setting there.

I assume that the propellors on both wet sides spin freely by hand.