dumb ro/di set up question....

nicolicious · 05/31/2007, 06:39 PM

i just got my unit today and hooked it up. It did not come with a pressure gauge so i bought one at HDl. now where do i put it?

on my paperwork it says to but it inbetween the 3rd stage and the RO membrain. i have also seen people put the gauge on the tap water line in....do i need two? am i the crazy one?

where is the correct placement of a pressure gauge on a ro/di unit.....?

got it from filterguys.......theeeeerrrre greeeaaat!

thanks

Hop · 05/31/2007, 06:47 PM

As long as you have enough pressure to begin with, you don't need one IMO. It's like the seatbelt light on the dashboard... You know when it's on or not

DarG · 05/31/2007, 06:57 PM

It's the membrane that requires the certian amount of pressure so right before the membrane, after the final prefilter, just like the Filter Guys state.

Misled · 05/31/2007, 07:38 PM

Also it shows a loss in pressure when the sediment filters begin to clog up.

AZDesertRat · 05/31/2007, 09:32 PM

A pressure gauge or better yet two are good troubleshooting tools. If you have one put it between the carbon block and the RO membrane to measure pressure drop across the filter array. If you have two put one on the incoming line and the other where I stated before so you get a more accurate measurement of differential pressure. This gives you a real accurate measurement of prefilter condition and can help predict RO flow rates when used along with water temperature. Just because you have 60 psi at the tap doesn't mean you will have 60 psi available to the membrane.

05/31/2007, 06:39 PM	#1
nicolicious Registered Member Join Date: Mar 2005 Posts: 202	dumb ro/di set up question.... i just got my unit today and hooked it up. It did not come with a pressure gauge so i bought one at HDl. now where do i put it? on my paperwork it says to but it inbetween the 3rd stage and the RO membrain. i have also seen people put the gauge on the tap water line in....do i need two? am i the crazy one? where is the correct placement of a pressure gauge on a ro/di unit.....? got it from filterguys.......theeeeerrrre greeeaaat! thanks

05/31/2007, 06:47 PM	#2
Hop Carpe Noctem!!! Join Date: Jul 2004 Location: Western Colorado Posts: 8,548	As long as you have enough pressure to begin with, you don't need one IMO. It's like the seatbelt light on the dashboard... You know when it's on or not __________________ Hop Current Tank Info: 300-gallon in-wall system (mixed reef)

05/31/2007, 07:38 PM	#4
Misled RC Mod Join Date: Oct 2006 Location: Pittsburgh, Pa Posts: 11,440 Blog Entries: 11	Also it shows a loss in pressure when the sediment filters begin to clog up. __________________ Jesse I'm not saying I'm Batman. I'm just saying nobody has ever seen me and Batman in a room together.

05/31/2007, 06:57 PM	#3
DarG Registered Member Join Date: Dec 2006 Posts: 5,515	It's the membrane that requires the certian amount of pressure so right before the membrane, after the final prefilter, just like the Filter Guys state.

05/31/2007, 09:32 PM	#5
AZDesertRat Moved On Join Date: Jan 2002 Location: NW Phoenix Posts: 16,621	A pressure gauge or better yet two are good troubleshooting tools. If you have one put it between the carbon block and the RO membrane to measure pressure drop across the filter array. If you have two put one on the incoming line and the other where I stated before so you get a more accurate measurement of differential pressure. This gives you a real accurate measurement of prefilter condition and can help predict RO flow rates when used along with water temperature. Just because you have 60 psi at the tap doesn't mean you will have 60 psi available to the membrane.