Low water pressure

[Dawiep]

I have had a 2700L JoJo installed as a municipal backup that runs through a three stage whole house filter and driven by a 0.75 Kw JoJo VSD pump and I experience very low water pressure since installation. 

[Clint]

Check for a hissing noise from the pump and make sure the pipe from the tank is bigger than the pipe going out of the pump(this is cavatation and will damage the impeller)

I hope this helps

[Derek3]

On 2024/09/25 at 11:10 AM, Dawiep said:

I have had a 2700L JoJo installed as a municipal backup that runs through a three stage whole house filter and driven by a 0.75 Kw JoJo VSD pump and I experience very low water pressure since installation. 

What do you base the low water pressure on? The Jojo Vsd pump can deliver between 2~3 bar pressure where municipal water pressure is between 5 to 10 bar.

[macafrican]

What is your source water to tank?   Rainwater off roof, river water, borehole water, sink hole water?

I have system for river water that can vary immensely in quality that affects particulate filters very quickly.    Even borehole water can vary, but far less.   Eventually the sources go to unpressurized JoJo.    You need a pressure bladder between that reservoir and the house demand.   Depending sophistication it can literally be a 200 liter water capacity in a pressure vessel with a gauge.    When there is no demand on water, you pump the bladder to required pressure.   Your pump controller upstream of the bladder is set to run in a range.   So it might kick in at 2.5 bar and run until 4.5 bar.    Don’t go tight or that motor will die early doing start-stop-start-stop whenever Aunt Maude brushes her teeth.    For me, if somebody does a quick open close like rinsing a few cups or maybe better flushing a toilet, pump should not kick in.