Pump issues on new system, not sure where to go from here

fragileassassin

fragileassassin

Well-Known Member
Title says it all, still scratching my head at my pump issue. I guess this is what happens when you try something different. Maybe theres something I dont know about in play here causing me issues?


It sounds like its sucking air, but its not.
I even got different fittings to give it a bigger feed neck ect and while I was at it I got a big + fitting so I could see the pump inlet. This also ruled out the need for a vent.
It's not running out of water, it's not bubbling/surging/swirling at the intake.
Less resistance on the outlet makes it worse.

I started with a 1400ghp, put in a 1200gph but it didnt seem to help much. Maybe a little. I have 2 800s that should be here tomorrow that I can try out, but I'm afraid I wont have enough flow with just 1 800 to all 12 sites.

Starting to wonder if it's the seals on the pump body, it twists and comes apart from the motor to swap easy.
Or that this type of pump isnt suited for what I need.

20181213_171936.jpg 20181213_171913.jpg
 
rkymtnman

rkymtnman

Well-Known Member
just a guess, but i'd say it's too much gph then.

google fluid flow in pvc pipes of different diameters. it will show something like 1/2" can do xxx gph. 1" can do yyy gph etc.
 
fragileassassin

fragileassassin

Well-Known Member
rkymtnman said:
just a guess, but i'd say it's too much gph then.

google fluid flow in pvc pipes of different diameters. it will show something like 1/2" can do xxx gph. 1" can do yyy gph etc.
Click to expand...
I have 2" pipe on the drain pipes that im pumping out of, which is capable of flowing like 3300GPH at gravity.

One thing that I havent tried yet but just thought of is greasing the seal on the motor body. Ill try to get a couple more pics tonight of the pump.
 
5BY5LEC

5BY5LEC

Well-Known Member
Dope. My pump was noisy AF but seemed to work fine. If you are getting good flow I wouldnt worry about it. Get a extra pump so you can swap it out if it dies. Might be back pressure from the sprayers.
 
fragileassassin

fragileassassin

Well-Known Member
5BY5LEC said:
Dope. My pump was noisy AF but seemed to work fine. If you are getting good flow I wouldnt worry about it. Get a extra pump so you can swap it out if it dies. Might be back pressure from the sprayers.
Click to expand...
Ive been letting it go at it seems to run fine, but the pump is getting hotter than ive seen them get before and its heating the whole system up to 80+. May try to rig up another bucket under the pump to submerge it and see if that changes anything.

Ive used both these pumps in my big system with a similar sprayer, but they are submerged in the outside res.
When I take the caps off and lower the back pressure on the sprayers or open my bypass/drain valve it actually gets louder.
 
Airwalker16

Airwalker16

Well-Known Member
fragileassassin said:
Title says it all, still scratching my head at my pump issue. I guess this is what happens when you try something different. Maybe theres something I dont know about in play here causing me issues?


It sounds like its sucking air, but its not.
I even got different fittings to give it a bigger feed neck ect and while I was at it I got a big + fitting so I could see the pump inlet. This also ruled out the need for a vent.
It's not running out of water, it's not bubbling/surging/swirling at the intake.
Less resistance on the outlet makes it worse.

I started with a 1400ghp, put in a 1200gph but it didnt seem to help much. Maybe a little. I have 2 800s that should be here tomorrow that I can try out, but I'm afraid I wont have enough flow with just 1 800 to all 12 sites.

Starting to wonder if it's the seals on the pump body, it twists and comes apart from the motor to swap easy.
Or that this type of pump isnt suited for what I need.

View attachment 4248723 View attachment 4248721
Click to expand...
800 will be plenty. I was surprised too.
 
5BY5LEC

5BY5LEC

Well-Known Member
fragileassassin said:
Ive been letting it go at it seems to run fine, but the pump is getting hotter than ive seen them get before and its heating the whole system up to 80+. May try to rig up another bucket under the pump to submerge it and see if that changes anything.

Ive used both these pumps in my big system with a similar sprayer, but they are submerged in the outside res.
When I take the caps off and lower the back pressure on the sprayers or open my bypass/drain valve it actually gets louder.
Click to expand...
I noticed the listing said that it needed to be submerged to cool.
Are your clearances enough that you can throw a danner or something on there in case it dies?
I noticed the union so that you can just unscrew the union and then pump if it goes south. Unions are nice.
* Not clearances. What I was trying to say is will the outlet/inlet line up?
 
fragileassassin

fragileassassin

Well-Known Member
5BY5LEC said:
I noticed the listing said that it needed to be submerged to cool.
Are your clearances enough that you can throw a danner or something on there in case it dies?
I noticed the union so that you can just unscrew the union and then pump if it goes south. Unions are nice.
* Not clearances. What I was trying to say is will the outlet/inlet line up?
Click to expand...
Yes I tried to keep as much of the pump connection removable as I could in case something like this happened. I tried a few different setups with it so I have fitting options too.
That whole front pipe is held in by the black couplers then the feed side by the screw together unions. So it shouldnt be too difficult to change it out.

idk why theyd put threads on the input if you cant use it inline.
 
Airwalker16

Airwalker16

Well-Known Member
5BY5LEC said:
I noticed the listing said that it needed to be submerged to cool.
Are your clearances enough that you can throw a danner or something on there in case it dies?
I noticed the union so that you can just unscrew the union and then pump if it goes south. Unions are nice.
* Not clearances. What I was trying to say is will the outlet/inlet line up?
Click to expand...
It actually says to make sure it just has water to pull so it doesn't overheat. They just word it with "submerged".
 
5BY5LEC

5BY5LEC

Well-Known Member
You will get it sorted either way.
Your system is going to be a winner anyway. That drain system is legit. I like good PVC work.
 
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