Low Tank Pressure
Reverse osmosis (RO) tanks should ideally maintain a pressure of 7-8 psi when empty. To assess the tank pressure, start by locating the pressure valve, which is usually found on the side of the tank near the bottom. Ensure that all water has been drained from the tank, then use a pressure gauge to measure the tank's pressure.
Ruptured RO Tank Bladder
If you find that only a small amount of water—about a cup—can be collected from your RO tank under normal water pressure, and the flow subsequently diminishes to a trickle, this may indicate a ruptured bladder within the tank. Unfortunately, the bladder itself cannot be replaced, meaning you will need to replace the entire storage tank. In such cases, it is advisable to consult a professional for assistance.
Clogged Filters
Clogged filters are often the primary cause of slow water flow from your RO system. If you notice that the tank is not filling properly, it's essential to inspect the filters. Generally, filter replacements are recommended annually; however, if your local water supply contains higher levels of contaminants, you may need to change them more frequently.
Kinked Water Line
Inspect the water line for any kinks or pinches that may be obstructing flow. While checking the line, ensure that the water supply valve for your RO system is fully open to allow adequate water flow.
To determine whether the filters are clogged or if the tank requires pressurising, please follow these steps:
1. Turn off the tank valve.
2. Open the filtered drinking water tap.
3. Observe the flow: if the tap produces a steady trickle, the filters are likely not blocked.
4. If the flow is reduced to a drip, this may indicate that the filters are clogged and need attention.