Why my Fly High Tsunami Pump will not empty the sacs?

aarond0083 · Criminal Joined: 03 Nov 2006 Posts: 97

For some reason my pump will not empty my sacs. I am connecting the pump directly to the sac, pushing down on the pump trying to get it to plumb, and also venting the sac. Everything the directions say and still nothing. It fills just fine but my crew and I are getting tired of having the pick the sacs up and hold them over the boat to drain every time. If I can't figure it out I may do away with sacs and go to pop bags. Any ideas?

jpminter · Posted: Jun 11, 2007 6:41 am Post subject:

If the pump is working fine when you're filling then it's obviously not broken. Make sure the pump is touching some water that is inside the sack. Maybe pull it to the side or push down on it or something.

LFADAM · Posted: Jun 11, 2007 7:03 am Post subject:

jpminter, but dont push it too hard or itll suck on the bottom/sides of the sack and not the water and it wont work. I just got a launch pad 750 and Ive been tinkering with it to drain it. Usually I have to push it down like jpminter said but as I said, if you push to hard, it suctions against the sack. Also it helps to tilt the sack to get all of the water to the side the pumps at. Even with doing all of that, I usually cant get 100 % of the water out, maybe 50 lbs worth. If I want to get the rest, I just pick it up, put it on the dock, and open one of the normal drain holes towards the end/bottom and tilt it until it all drains out.

Chattwake · Posted: Jun 11, 2007 7:08 am Post subject:

This sounds gay, but you can prime the pump by using your mouth to create a vacuum on the dump hose after you have attached the pump to the fat sac and turned it on.

oshensurfer · Posted: Jun 11, 2007 9:56 am Post subject:

aarond0083, Here's another dumb question, but are you turning the pump around and installing it the opposite way you are filling it? You just say you're connecting it directly, but I just want to make sure what you mean by that.

...and what are pop bags?

aarond0083 · Criminal Joined: 03 Nov 2006 Posts: 97

oshensurfer, pump in the water and hose on the bag to fill. hose hanging over the boat and pump on the bag to attempt to empty.

Pop bags are bags with steel pellets in them. 40 lbs a bag, easily movable. http://www.pop-products.com

oshensurfer · Posted: Jun 11, 2007 10:22 am Post subject:

aarond0083, Those are sweet.

Try getting flow to the hose laying on the floor of the boat. If that works then flip it over the side of the boat. It may be having trouble pumping up and over the gunwale. Don't know what else to tell you... Good luck.

wviveen · Addict Joined: 03 Mar 2003 Posts: 705 City: Loosdrecht

Maybe there is leaking some air in via another vent in the bag ?
Are all plugs secured tight enough ?

jryoung · Ladies Man Joined: 19 Mar 2004 Posts: 7664 City: Man Jose

aarond0083 · Criminal Joined: 03 Nov 2006 Posts: 97

jryoung,

There is no need to reverse it. The pump in the water fills, the pump attached to the bag is supposed to empty. Moving the pump is the reversing.

Also, I don't think you can reverse the fly high pump.