[Mr Sparkle]

Hi guys my tds reading straight out of my merlin 40/40 is reading 0.52 tds!
I'm sure it should be lower than that?
What should I be getting?
Do I need to change anything if so what needs changing?
Thanks guys

[8weekly]

What is your tap water tds? Typically a Merlin will remove 90%.

[Mr Sparkle]

Tap water is high here it's coming out at around 280 tds

[Smudger]

That's not an horrific tap water TDS your Merlin should be able to knock this down to between 10 and 15 TDS provided you have enough pressure are you using a booster pump ??

Darran

[8weekly]

That's not an horrific tap water TDS your Merlin should be able to knock this down to between 10 and 15 TDS provided you have enough pressure are you using a booster pump ??

Darran

Really? On 80psi I only got 280 tds down to 29 with new membranes and filter. My research was that this was about right for a Merlin.

[Mr Sparkle]

No haven't got a booster pump,
Will it make a big difference using a booster pump?

[Smudger]

8w - well at 90% 280 should yield a TDS of 28

Using a booster pump
( http://www.anglianpumping.com/products/dab-jet-pumps-230v )
I got my 340 TDS down to 11 with new membranes over a period of 2 years it crept up to 25

With the Merlin it's important to change the little pre filter every 4 to 6 months and if your making more than 50 ltrs per day you need to have 10 or 20 inch pre filters a sediment and carbon block

Darran

[8weekly]

8w - well at 90% 280 should yield a TDS of 28

Using a booster pump
( http://www.anglianpumping.com/products/dab-jet-pumps-230v )
I got my 340 TDS down to 11 with new membranes over a period of 2 years it crept up to 25

With the Merlin it's important to change the little pre filter every 4 to 6 months and if your making more than 50 ltrs per day you need to have 10 or 20 inch pre filters a sediment and carbon block

Darran

I have moved recently and am getting through resin at a ridiculous rate now as I am on much lower pressure. Which of those pumps did you go for? Was going to buy this one:

http://www.ebay.co.uk/itm/Clarke-1-Multi-Stage-Pump-CBM240-/310969992016?pt=UK_Hand_Tools_Equipment&hash=item4867418350

[Smudger]

I'd have to check but sure it was the 82m second on menu £139.00

Been going 4 years, been frozen in the shed, run dry for six hours when the hose blew off, and run with boiling water when I forgot to set timer and tank solenoid shut off flow so pump ran with same water inside it for 3 hrs !!!

Btw you can buy these with a pressure switch to avoid all of the above problems 😄

Darran

[martin hulstone]

clarke 240 e is the better pump think its 310 quid on ebay