WaterGeneral RO 585 Installation & Service Manual page 5

Under-the-sink reverse osmosis water systems
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INSTALLATION (for under-the-sink installation)
STEP 1: TAPPING INTO COLD WATER SUPPLY
CAUTION:
The water supply to your RO unit MUST come from COLD water line. Hot water will damage your RO system.
1.
Locate cold water shut off valve under the sink and turn it off. Open cold-water faucet to release the pressure, and make sure
there is no water.
2.
Put 3 turns of Teflon tape on threaded ends of the angle needle valve, or the ball valve.
3.
Determine the best location for putting the feed water adapter. Do you have a flexible line or a solid copper tube? Is the
flexible line with smooth surface or spiral line? Is there enough space for installing feed water adapter? More radius or more
space is required if you first joint the feed water adapter with the needle valve. Is the size of fitting thread the same as the
feed water adapter?
4.
You can either joint the angle needle valve to the feed water adapter first, or install adapter to cold water supply line first. It
depends on how much space is available under the sink.
5.
For FLEX line: Loosen nut and separate cold water riser tube from faucet shank. Gently bend riser tube so that feed water
adapter fits onto faucet shank. Use the Existing cone washer (if the existing cone water is badly damaged, use the new cone
water provided in the kit). NOTE: If you have a spiral type flex tube riser, you NEED to use the existing cone water, since
the cone washer we provided is straight, not spiral). Use Teflon tape on threaded parts to prevent leaks. Then tighten the
connection.
6.
For Solid Copper riser: Same procedure as flex tubing except you must cut a piece of the riser tube about 3/ 4" to 1" so the
adapter can fit between faucet and riser tube. Use Teflon tape to prevent leaks.
7.
Install the angle needle valve to adapter if you have not done so in procedure #4.
8.
For connecting red tubing to angle needle valve, refer to the photo below. Then push tubing through the brass nut, then the
sleeve, then put plastic insert inside the tubing, then push sleeve against the insert, then screw on the brass nut. Don't over
tighten it. But it has to be tight.
1. feed water adapter ½" connect to
base of kitchen faucet
Feed water adapter with Ball valve
1. buy a ½ pipe to ½" pipe hose
2. ½ to ½" nipple fitting. 3. adapter.
4. your existing faucet pipe
1. put Teflon tape on the thread, put only 3 turns
2. push tubing through the nut,
3. push tubing all the way into the connection,
4. screw on the nut tight using a wrench
Many times, it is easier to use the existing
cone washer than using the new one.
If there is not enough space under the sink
base, or it's difficult to get to, you can
disconnect the riser from the cold-water valve
side. If the fitting size does not match, buy
size-changing fittings, or buy a new flex riser
with matching sizes.
Many times, it is easier to buy an additional
stainless steel braded flex riser and a ½"
nipple to put in between the bottom of the
faucet male thread and the feed water adapter
(Don't buy the spiral type) so you can easily
put the feed water adapter between two risers.
This is the EASIEST way. Spend additional
$5 on the riser may save you a lot of time.
5

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