Anti-gravity pump not self-priming

Winemaking Talk - Winemaking Forum

Help Support Winemaking Talk - Winemaking Forum:

JBP

Supporting Members
Joined
Dec 6, 2018
Messages
107
Reaction score
142
Anyone have any experience with the anti-gravity pump (Northern Brewer)? I received one for Christmas - worked fabulously for several times, then stopped self-priming. They replaced it - second one, same problem. Have been trying to find work-around, but not much is working consistently and I am not exactly a mechanical wizard. If anyone has any suggestions or experience, would appreciate the insights. I really enjoyed not having to beg for help with full carboys while it lasted.

In the meantime, saving up for an AIO...
 

sour_grapes

Victim of the Invasion of the Avatar Snatchers
Joined
Sep 19, 2013
Messages
13,615
Reaction score
15,330
Location
near Milwaukee
Make sure you do not have any airleaks at the fittings. You could squirt water on the fittings while you are trying to get the prime going and see if you notice anything (noises, liquid getting sucked in...).
 

stickman

Veteran Winemaker
Joined
Jun 16, 2014
Messages
1,906
Reaction score
2,194
Be sure to use an inline strainer to prevent damage due to pumping solids. Also, after use, and flushing clean etc., don't leave any sulfite solutions or harsh sanitizing agents inside the pump when stored. I always do a final rinse with RO or purified water, so if it dries, it doesn't leave significant mineral deposits behind.
 

JBP

Supporting Members
Joined
Dec 6, 2018
Messages
107
Reaction score
142
Be sure to use an inline strainer to prevent damage due to pumping solids. Also, after use, and flushing clean etc., don't leave any sulfite solutions or harsh sanitizing agents inside the pump when stored. I always do a final rinse with RO or purified water, so if it dries, it doesn't leave significant mineral deposits behind.

Is there a way to evaluate if there is damage? I have rinsed and cleaned well, but can't remember if I ever left sulfite solution as the last rinse. The fittings are tight (no leaks).

Thanks!
 

Sage

Junior Member
Joined
Aug 23, 2014
Messages
910
Reaction score
1,737
Pump water through it. Shove the inlet hose into a faucet and turn it on. Force water through and see if that opens it up.

Then try it on it's own to see if the cure worked.
 

stickman

Veteran Winemaker
Joined
Jun 16, 2014
Messages
1,906
Reaction score
2,194
That is a typical diaphragm style pump which uses check valves at the inlet and outlet, and these valves have to seal well in order to self prime. I would circulate a cleaning solution through the pump, let it go for a while, then flush with water and see if that helps to clean up the valves.

Did you talk to the supplier about a service manual? There may not be one given the low cost. The internet is corrupt with many different versions of that pump that are fairly cheap. If all else fails, I would guess that you could access the valves under the five screws on top, and manually clean them. I don't have that pump so I'm just speaking in general terms.

Found this kit for a similar pump that shows the parts.
https://www.ebay.com/itm/DC-12V-60W...Automatic-Switch-Water-Pump-Kit/113519513623?
 
Last edited:

JBP

Supporting Members
Joined
Dec 6, 2018
Messages
107
Reaction score
142
Thanks for the suggestions - some good tricks to try. No manual unfortunately (have looked around for one).

Sunday afternoon task...
 
Top