Water General Ro/di Unit

So i was outside talking with a new neighboor, and he tore his tank down and sold it before he moved in. He gave me this Water General Ro/Di 102 unit.
it is a 6 stage unit.
I have a couple questions about this.
Coming out of my 4th stage (Membrane) there are 2 outlets. 1 directly in the center, the other slightly off to the side. Which is supposed to be good water, and which is the bad? Or they both good water?
The 5th and 6th stage contains Di Resin, which has went bad (completley changed color), is it ok to run this unit without the extra di resin stages?
Here is a link on the only thing i could find on this unit.
Its a pretty sweet score for being free and 100gpd
Water General: Aquarium Water Purification Systems
Also this unit requires at least 40psi to operate. Am i going to get 40psi out of my standard kitchen sink faucet?
Thank for any and all help guys!!!;D

 

Hey steve, GREAT score. I'm sure you'll need resin for DI water which is the best for your tank. I also am sure most systems require at least 40psi source water. PM AZdesertrat. He can tell you the configuration of any system blind folded. He can also give you good tips on saving $$ & what types of filters & resin to buy.

Good Luck!!

 

Steve,
Take a look at this diagram for an explaination of which is which coming out of the membrane housing. The little box on the lefthand side shows what you need. Your may not use the same standard color convention for the 1/4" lines but basically the one closest to the center is the good water and the one closer to the outside edge is the waste.
http://www.spectrapure.com/huds/ASO-SYS.pdf

Most municipal water systems provide in the neighborhood of 50 psi at the tap. I would suggest you purchase two things before investing much in the system. You need a TDS meter and an inline pressure gauge to tell the condition of the RO membrane, and later the DI resin. 40 psi is the bare minimum for a RO system. A good handheld TDS meter like the HM Digital TDS-3 or TDS-4 which are temperature compensated and have a digital thermometer built in are only $20-$30 and an inline pressure gauge with all the fittings is about $11-$15.

For now you can run it without the DI installed and you should be getting somewhere around 90-98% reduction in TDS from the tap depending on which membrane your system has. Some WG units used the less desirable 100 GPD Dow Filmtec nano filter which is only 90% efficient while others used the GE Water 100 GPD which is 96-98% efficient when new but produces less water, actually the same amount as a 75 GPD Dow Filmte which is the most popular membrane.

For replacements and the meter and gauge I would suggest a couple places like:
SpectraPure Customer Appreciation SALE! 20% - 50% off

HAND-HELD TDS METERS

PRESSURE GAUGE ADD ON

or
www.buckeyefieldsupply.com

http://www.buckeyefieldsupply.com/showproducts.asp?Category=207&Sub=149

http://www.buckeyefieldsupply.com/showproducts.asp?Category=201&Sub=109

When you do decide to get some resin for the DI take a minute and remove the two horizontal clear housings from off the top of the membrane and fasten or zip tie them to one of the vertical housings so they are oriented vertically. Also make sure they fill from the bottom and exit out the top so you eliminate the short circuiting or channeling common with horizontal filters. Pack the housings tightly with no voids. it works well to fill it to the top then tap the housing on the table or counter a few times to really pack it tight then fill again and repeat.

Do not but too much resin at once and make sure you seal whatever is left tightly, a seal a meal vacuum sealer works well. Resin has a shelf life of about 6 months even when stored properly.