rainwater pump protection

[valucjean]

Hello everyone
following a rainwater recovery facility , various suction tube rupture problem (leak, split tube, etc.) I was brought to control the temperature of the pump.
I found on the market an adjustable temperature controller relay with pt100 probe or thermocouple which is positioned on the pump.

to whom would have happened a similar mishap I could communicate more details
valucjean
I did not manage to download the photos

[Rabbit]

... following a rainwater recovery facility , various suction tube rupture problem (leak, split tube, etc.) I was brought to control the temperature of the pump.

I can't understand the relationship between problems
sealing of the suction pipe from the need to control the
temperature of the pump motor (?).
I believe that we must first find the cause of these different
conduits problem, before trying to control the
temperature of the pump. Indeed even a thermal safety
will not save the pump, only the motor will be saved.

[little sparrow]

Bonjour,

I can't understand the relationship between problems
sealing of the suction pipe from the need to control the
temperature of the pump motor (?).

well, me neither .....

however, if there is a problem with leaks and rupture on the suction pipe, I would already ask you what type of pipe it is ...
avoid inexpensive transparent corrugated pipes, which are more fragile and crack easily enough ... (and difficult to control in the buried tank)
prefer to pay more for a good reinforced flexible hose, which will last a bundle of years and without such annoyances !!

price example:
for one hundred € = reinforced flexible hose 3 m with float strainer fitted with non-return valve and fittings (in Belgium)
for a large hundred € = reinforced flexible hose 2 m with float strainer fitted with non-return valve and fittings (in France)

count 1 X 1/2 the height of the tank for the length of the pipe ...

NB: many people also denounce the additional cost of submerged pumps compared to (equivalent) surface pumps ..., but generally "forget" to also take into consideration that this "Suction kit" is not necessary with a Immersed pumpe .......

cordially

[valucjean]

Bonsoir
the pump: on presser
to answer the first question, classic ringed tube (according to the local hardware store no problem) but I was so eager to start my new installation that I can't wait for September (2008) to reopen from a professional distributor.

for the second, if there is an air intake between the strainer valve and the pump, this will pump without reaching its set pressure, hence the overheating of the pump body and not the motor, therefore the ineffective motor thermal protection, as well as water shortage protection because there is always water, I control the temperature of the pump body (set temperature 25 °)

I hope I have been clear in my explanation

cordially

[Rabbit]

You are going to screw up the jams by turning the pump a
empty.
Next to that, just replace the unsuitable hose
by a Socarex preferably Reinforced. In general I use
1 "reinforces. Pay more attention to the tightness of the connections.
seems like a good idea to save in the short term.
Socarex can be found in all good hardware stores
for light DIYers or pros

[valucjean]

You are going to screw up the jams by turning the pump a
empty.
Next to that, just replace the unsuitable hose
by a Socarex preferably Reinforced. In general I use
1 "reinforces. Pay more attention to the tightness of the connections.
seems like a good idea to save in the short term.
Socarex can be found in all good hardware stores
for light DIYers or pros

I have set up this control to avoid running it empty and to provide additional protection in the event of a problem (problems can always happen) and then I would change the suction tube, I do not know that the characteristics "flexible translucent tube ring steel working pressure 6 bar"
cordially
valucjean

[valucjean]

You are going to screw up the jams by turning the pump a
empty.
Next to that, just replace the unsuitable hose
by a Socarex preferably Reinforced. In general I use
1 "reinforces. Pay more attention to the tightness of the connections.
seems like a good idea to save in the short term.
Socarex can be found in all good hardware stores
for light DIYers or pros

I have set up this control to avoid running it empty and to provide additional protection in the event of a problem (problems can always happen) and then I would change the suction tube, I do not know that the characteristics "flexible translucent tube ring steel working pressure 6 bar"
cordially
valucjean

I just saw the tube in question, would it accept 90 ° elbow, because it has to go through a 100 pvc tube with 90 ° elbow, configuration requires
cordially
valucjean

[Rabbit]

Yes, the socarex will pass through a 90 ° bend of 110.
easier just coat it with silicone oil and prepare
socarex by putting it in the sun so that it softens.
That said it will not necessarily be easy, but it is possible.

[gegyx]

But what is this "socarex" for suction pipe?

The black polyethylene pressure hose, at 1 € per meter which is generally used for drinking water pipes?

I just changed a garden pump (the other not drained froze this winter ... ). Brand Watss (67 €) 1200w at Brico D ...
Ben it gives less well than the old ones (however less powerful and first price). The water is 3 m, with a 1 "corrugated hose, which descends another 2,5 m under the water, into the nozzle.
I have to prime it completely so that it will reject water, and it heats up with use. Which was less the case with the old ...
What is the problem? I checked the strainer, valve and changed the sock around the strainer (with hood filter ).
Was it the corrugated pipe that took a frost bite? Because there is nothing obvious.
Or the pump which is a stew…

Replace it with black polyethylene, but it's a bit stiff for the exit of the well ... No?

[valucjean]

well it will be necessary that I make the test but I still have a fear that it will crash at the elbow, the connecting tube making 100 mm
to see
cordially valucjean