Shurflo Extreme 4.0 Water pump

Shurflo Extreme 4.0 Water pump

01-03-2006, 11:57 PM

#1 (permalink)

plongson

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Join Date: Jan 2003 Location: Las Vegas, Nevada Posts: 309 Old Reader's Rigs Gallery

Shurflo Extreme 4.0 Water pump

I don't know if anyone here has had trouble getting one of these pumps to run when installed in a retrofit situation but I did and I wanted to let you know what I found out to get it to run.

First the dilemma: Remove the old Shurflo contactor style pump, install the new controller style pump, new pump WON'T run. got 12.8v...old one runs, new one won't. BUT IT WILL RUN WHEN CONNECTED TO A BATTERY. It will NOT run when connected to a FILTERED power output from the AC converter, and this is the way all the outputs are configured. YOU NEED UNFILTERED DC POWER.

Turns out the modified DC signal coming from the AC converter is so bad that the electronics in the new controller style pumps will not even think they are powered up!

You should have extra lugs on your converter that are essentially a direct link to the battery and not mearly an 12v output from the converter.

I nearly pulled out my hair before I got this one straighted out.

Just a little heads up...file this info away...

Click to see shurflo pump

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Last edited by plongson; 01-04-2006 at 12:11 AM..

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