Resin joint on well pump

[Mikegh]

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]

It should say in the instructions given with the joint

 

[Mikegh]

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]

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]

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]

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]

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]

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]

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]

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]

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]

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]

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

Or would it be a waterlogged pump

 

[Mikegh]

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]

Waterlogged pump could trip rcd.