[chris turner]

Hi guys, I have the gardiners ezpure ro system with a booster pump from ro man. My tap pressure is very low, around 30psi, pump gets it up to about 100psi.
The pumps pressure switch kicks in every 40 seconds or so, turning the pump off for a couple of seconds, is this normal?
I have the waste valve turned 3/4s of the way, if I close it fully the booster switches off around every 20 - 30 seconds.
Iv noticed that when the membrane was new the pressure switch hardly ever activated, the older the membrane gets the more the pressure switch seems to come on. Membrane is about 1 year old.
About 6 months ago the capacitor burnt out on the pump, which I replaced and the pump runs as good as always.
I'm just worried all the stop starting will kill it again!

[chris turner]

Bump

[slap bash]

THERE COULD BE SEVERAL PROBLEMS:These are my understanding of these pumps You pre filter are clogged up.
Your membrane are on the ways out.
Your pump is not a true booster pump.
What volts is you booster pump.
Booster pumps are much stronger than a delivery pump and normally 24v or even 36 volt. I also am not sure but they don`t have pressure switch to cut out.I have never heard of a booster pump cycling.( cutting out)

[Don Kee]

How often do you change the pre filters?

[chris turner]

It definitely does have a pressure switch. And definitely is the right booster pump, was recommended to me by Alex gardiner after buying the ezpure system from him.
I presume that if the pump has a pressure switch it is normal for it to cycle, but it's just the frequency of the cycling that worries me.
After the capacitor blew last year I couldn't fill up for a few days until I found a replacement capacitor which was a nightmare as they'd stopped making those particular ones!

[chris turner]

There the gardiners long life filters, I normally change them every 3 or 4 months. Membrane is 1 year old

[Alex Gardiner]

Hi guys, I have the gardiners ezpure ro system with a booster pump from ro man. My tap pressure is very low, around 30psi, pump gets it up to about 100psi.
The pumps pressure switch kicks in every 40 seconds or so, turning the pump off for a couple of seconds, is this normal?
I have the waste valve turned 3/4s of the way, if I close it fully the booster switches off around every 20 - 30 seconds.
Iv noticed that when the membrane was new the pressure switch hardly ever activated, the older the membrane gets the more the pressure switch seems to come on. Membrane is about 1 year old.
About 6 months ago the capacitor burnt out on the pump, which I replaced and the pump runs as good as always.
I'm just worried all the stop starting will kill it again!

The older a membrane will get the harder it will be for the water to be pushed through the membrane usually due to cellular degradation and clogging. However having a booster pump cut out this often is unusual. Have you contacted RO-Man to ask them their opinion on why it is cutting out so often - they may be able to advise in adjusting the pressure switch or even replacing with a less sensitive pressure switch/controller.

Does it change cut-off frequency when you fit a fresh pre-filter?

[chris turner]

Thanks for responses guys. The cut off frequency stays the same after filter change but does cut less after membrane change.
I might have to look at adjusting the pressure switch or adjusting the pump itself if it is at all possible. I just checked and the pump is running at close to 120 psi, maybe if I can lower it to 100psi it would be easier on the pressure switch.
Also whilst your here Alex, hurry up and release your new brushes 
Iv had my unger brush 2 days and I want to bin it already. Worth a try I suppose but wish I just bought one of your brushes.

[Alex Gardiner]

Thanks for responses guys. The cut off frequency stays the same after filter change but does cut less after membrane change.
I might have to look at adjusting the pressure switch or adjusting the pump itself if it is at all possible. I just checked and the pump is running at close to 120 psi, maybe if I can lower it to 100psi it would be easier on the pressure switch.
Also whilst your here Alex, hurry up and release your new brushes 
Iv had my unger brush 2 days and I want to bin it already. Worth a try I suppose but wish I just bought one of your brushes.

Often a pressure switch can be adjusted (check with supplier first) or a different pressure controller head can be fitted.

All of the development work has been done on the new brushes. Simply sitting, waiting for the new tooling to be finished for the final stock mouldings.

[chris turner]

That's good news. I must admit iv abandoned your brushes of late, thought I'd play the field and try out some other brushes on the market, mainly sill brushes, and to be honest there all utter rubbish compared to yours.
I know iv mentioned it to you numerous times and your probably sick if hearing it but if your sill brushes can be a little more robust and last a little longer they would be the 'perfect' brush! And I would never cheat on you again
Iv just ordered a tecbuk to try until your new babies arrive, shame they don't make a sill version though.

[chris turner]

I'm still having trouble with my pump switching on/off at least once a minute, I'm certain along with cold water it's having a big impact on the amount of pure I produce.
This is the pressure switch http://ecogrid.co.uk/index.php/brio-2000m-pump-controller.html

It can be adjusted but I don't want to touch it without advice!
It's currently powering my system at about 100psi which is perfect, but will adjusting the pressure cut in be dangerous to the pump itself or the ro?