Disconnect the red tubing at point d.
Reverse osmosis storage tank not filling up.
Shut the reverse osmosis faucet off and let the tank fill up for 3 hours.
The most common reason for reverse osmosis tank not filling is due to insufficient air pressure in the storage tank.
The water pressure decreases as the tank gets near empty since the reverse osmosis filter produces water at a slow rate.
The right pressure should be around 5 7 psi.
Look at pictures of installation that show feed connection and drain connection.
Unscrew the filter housing and remove the ro membrane.
If the water coming out of your reverse osmosis ro faucet seems to be slower than normal or slower than you think it should be here are five reasons that can cause slow flow rates.
Low air pressure in ro tank.
Some of the water gets into the tank while reject water goes down the drain.
Wash the inside of the filter housing with warm soapy water.
If the tank is not filling on your ro 45 or ro 90 clogged filters or components can be the factor.
It only drains water when it s filling up the tank.
Open the faucet and drain the storage tank.
Because the reverse osmosis filtering process takes time storage tanks are a necessary component with any ro system.
The ideal pressure for an empty tank should be between 6 to 8 psi for a 2 4 gallon tank.
Do not remove the valve going to the membrane.
You can measure air pressure via a low air.
Close the faucet after the tank has drained.
Grab an empty bucket or container to catch the water coming out from the tubing.
It should be 5 7 psi.
In the pnrv18 model the tank holds approximately 1 5 gallons and in the pnrv model it holds 2 1 gallons.
Turn off the feed water line to the system.
A simple tire gauge applied to the air valve under a blue cap on the side of the tank will give a close reading.
Turn on your feed water line.
Continue to enjoy your reverse osmosis system as usual.
Please note that there are two valves one is the air pressure valve and the other one goes to the reverse osmosis membrane.
It takes 4 hours to produce 2 gallons of water.
Put on a pair of clean rubber gloves to handle the new ro membrane.
Without a storage tank you would probably have to wait 5 10 minutes just to fill a glass of water.
5 reasons you may have slow flow rates from your reverse osmosis system.
Much like the tire on a car the rubber bladder on the inside of a reverse osmosis storage tank can lose pressure over time.
Allow four hours for the tank to fill and try again.
Please follow the flow rate test below.
For the most part reverse osmosis filters don t require much maintenance.
Close the water supply valve.
The ro storage tank check the tank to see if it s full of water or not.
With a storage tank you can quickly fill your glass pot or water bottle.
Clogged or fouled water filters is the most common cause for a slow filling ro tank.
