[andrew.ralph@homec]

hi all using new merlin and geting through resin so quick to keep tds down any ideas why thanks andy

[concept]

whats your water pressure?

whats tds out of merlin?

[Gurdy]

We had the same problem and replaced the two ro membranes and don;t change the resin because its going into the tank now at 0.7tds. . . .Best £550 ever spent.

[andrew.ralph@homec]

water pressure is 30 psi and tds out of merlin is 95

[concept]

emailed you mate. water pressure is too low for a merlin. check your mail. hope it helps.

[andrew.ralph@homec]

thanks for help andy

[prestige cleaners]

my tds is 85 tap, and about 2 b4 resin must be your water, pressure or filters?

[concept]

pressure pressure pressure, merlins need 40psi minimum...even thats not really enough.

[andrew.ralph@homec]

message for concept can u email me at andy.ralph@live.co.uk cheers andy

[concept]

done 

[jsm]

gain more presure on the merlin by reducing the pipe on the waste - i have about 5mtrs of 6 mm pipe coming out of the waste tube.

DI - i dont even put a di on the merlin - eats up resin due to high flow rates - better to stick DI in van - in this order ---- tank -pump -DI- hose reel
due to pumps low flow rate resin last longer as resin has more time to work its magic.

[concept]

then you are shortening the life of your membranes.

booster pump is THE only fix to a merlin. i have been through hell and back with mine, and i keep banging on, but a clarke cbm240 pump is what is needed to get these working well.

[jsm]

then you are shortening the life of your membranes.

booster pump is THE only fix to a merlin. i have been through hell and back with mine, and i keep banging on, but a clarke cbm240 pump is what is needed to get these working well.

dont belive what the merlin seller's tell you that you need to spend out on a pump - if i remember this waste back preasure fix was known about years ago - i was one of the first to get the merlin when they come out and its still going strong after 4 plus years- all ive done is change the first filter's -- same membrains from start - still comes out at 10ppm .
from my days with 200 -400 gallon ro's they worked ok till you put a booster pump on them ...


but post is about resin usage --- dont even put a di on the merlin - full stop, if you want to save money
stick it after the pump so your pump passes the 10-30 tds more slowly throught the resin .


i still wonder why people even on di fill up their van tank with the water tap on full
and wonder why they getting high tds readings -

this gam'es not rocket science - tho some like to make it so lol