Resin joint on well pump

Mikegh · Jan 3, 2023

Hi all. I'm fitting a resin joint on a well pump flex so the joint will be left in a vertical position and probably submerged ?
How long after making the joint could I safely lower the pump down ?thanks
Im used to joints on the flat in trenches so wasn't sure on this one thanks again

MJPD29 · Jan 3, 2023

It should say in the instructions given with the joint

Mikegh · Jan 3, 2023

Didn't get it yet , dunno would they cover that scenario

48hr cure time at 25 degree probably all I'll get from instructions

davesparks · Jan 3, 2023

That's an impossible question without knowing the exact make and model of joint kit being used.

It will depend entirely on the specific type of resin used in the joint kit and how it cures.

Mikegh · Jan 3, 2023

That was pretty much my question, would it need to be fully cured before dropping the pump ?

I assumed most resin joints had similar characteristics, the standard torpedo type

davesparks · Jan 3, 2023

Mikegh said:
That was pretty much my question, would it need to be fully cured before dropping the pump ?

I assumed most resin joints had similar characteristics, the standard torpedo type

Depends on the type of resin used in the joint, some yes, some no, some won't be suitable for being submerged in water.

MJPD29 · Jan 3, 2023

Completely dependant on brand. Ones I am supplied with in work can be submerged in an hour yet I've used a brand that was 72hrs.

westward10 · Jan 3, 2023

Good point about them being submerged in water. Many things are described as water resistant this does not translate to waterproof. Water is a solvent and you would be surprised what it can, over time break down.

James · Jan 4, 2023

Also worth considering is the fact that most resin joints don’t have any strain relief and are not designed to be under tension or flexed.
and yes, I know the jacket will be bonded to the resin and will provide some strain relief but if under constant tension the materials may creep apart over time.

I think you may have to speak to the manufacturers of the joint before assuming it is suitable for the application.

freddo · Jan 5, 2023

The last time I needed a longer flex on a submersible pump I ordered a new long flex kit from the pump manufacturer, It came with a seal kit and long flex with moulded on strain relief seal.

LewisM · Jan 5, 2023

You can make it set quicker by changing the way you mix it, use more activator with less base but obviously leave yourself enough to fill the void

Mikegh · Jan 5, 2023

James said:
Also worth considering is the fact that most resin joints don’t have any strain relief and are not designed to be under tension or flexed.
and yes, I know the jacket will be bonded to the resin and will provide some strain relief but if under constant tension the materials may creep apart over time.

I think you may have to speak to the manufacturers of the joint before assuming it is suitable for the application.

Yes obviously I will be making sure there is no strain on the wiring

Anyway the information was non existent with the joints I was provided with ,just a few pictures of the making of the joint which I didn't need

Joint was German but I manage to discover after about an hour googling it is indeed submersible

I had to email the company to get the curing time which is quite fast . Ridiculous really

Mikegh · Jan 6, 2023

Would a well pump running dry dry cause an RCD trip ?

Or would it be a waterlogged pump

Mikegh · Jan 7, 2023

Mikegh said:
Would a well pump running dry dry cause an RCD trip ?

Or would it be a waterlogged pump

Anyone on this

Everyones a genuine with the simple questions

James · Jan 7, 2023

Waterlogged pump could trip rcd.

brianmoooore · Jan 8, 2023

Submersible pump running dry will overheat, cook it's windings, and then it certainly should trip it's RCD.

OnlQQker · Jan 8, 2023

What kind of pump is it OP?

Something like this?

Sealey Submersible Stainless Steel Dirty Water Pump | Automatic | Workshop | BiGDUG

Sealey Submersible Stainless Steel Dirty Water Pump | Automatic Sealey Submersible Stainless Steel Dirty Water Pump | Automatic: Sealey Submersible Stainless Steel Dirty Water Pump | 225 ltr./min | Automatic. Guarantee of up to 15 years. web.seo.pdp.meta_description_cta

www.bigdug.co.uk

brianmoooore · Jan 8, 2023

Is it a submersible or a borehole?

Mikegh · Jan 8, 2023

Dunno the term

It fits down something like an 8" diameter well pipe

It's cylindrical shape stainless steel finish

Mikegh · Jan 8, 2023

OnlQQker said:
What kind of pump is it OP?

Something like this?

Sealey Submersible Stainless Steel Dirty Water Pump | Automatic | Workshop | BiGDUG

Sealey Submersible Stainless Steel Dirty Water Pump | Automatic Sealey Submersible Stainless Steel Dirty Water Pump | Automatic: Sealey Submersible Stainless Steel Dirty Water Pump | 225 ltr./min | Automatic. Guarantee of up to 15 years. web.seo.pdp.meta_description_cta

www.bigdug.co.uk

No nothing like that

brianmoooore · Jan 8, 2023

Mikegh said:
Dunno the term

It fits down something like an 8" diameter well pipe

It's cylindrical shape stainless steel finish

It's a borehole pump. The top half is the motor, and they are usually filled with oil to keep out water, using the principle of the diving bell.
They soon overheat if the motor isn't in water.
Sure the hole is a big as 8". The one's I've fitted go down a 4" pipe.

Mikegh · Jan 9, 2023

brianmoooore said:
It's a borehole pump. The top half is the motor, and they are usually filled with oil to keep out water, using the principle of the diving bell.
They soon overheat if the motor isn't in water.
Sure the hole is a big as 8". The one's I've fitted go down a 4" pipe.

Can't recall now could be 4 or 6

Thanks again , borehole pump sounds about right

Readings were low , unsure if it was waterogged or ran dry.Unfortunately I didn't get to see pump