Removing an under sink reverse osmosis system might seem like a technical chore, but it is a manageable task with the right guidance. Whether you are upgrading to a new model or moving to a different residence, understanding the proper disconnection process is essential. This procedure ensures that you avoid potential water damage and make the transition as seamless as possible.
Preparing for the Shutdown Process
The first step in any successful removal is preparation, and safety must be the primary focus. Before touching any pipes or fittings, you need to shut off the water supply to the unit. Most under sink reverse osmosis systems have a dedicated feed line connected to your home's main water line, typically under the kitchen sink.
Locate the shut-off valve on this line and turn it clockwise to stop the incoming water. Additionally, you should unplug the unit from the electrical outlet to eliminate any risk of electric shock during the disassembly. Having a bucket and towels ready will help you manage any residual water that remains in the lines or the holding tank.
Draining the System and Disconnecting Water Lines
Once the water and power are off, you need to relieve the pressure within the system. Open the faucet on your sink to allow any remaining water in the pressurized tank to drain out. This step is crucial because pressurized water can spray out forcefully, creating a mess and potentially causing injury.
With the tank drained, you can begin to disconnect the various water lines. Typically, you will find a disconnect fitting at the back of the unit for the "in" line coming from the shut-off valve and the "out" line going to the faucet. Depending on the brand, you might need a specific tool to release these fittings, or you can usually do it by hand after the pressure is released.
Identifying the Tubing Connections
Under sink reverse osmosis systems usually involve three to four distinct lines that you must manage carefully. These typically include the feed water line, the pure water line, the drain line, and sometimes a separate line for a dedicated ice maker or additional filter station.
| Line Type | Typical Location | Purpose |
|---|---|---|
| Feed Water | Connected to the main water shut-off valve | Delivers untreated water to the system |
| Pure Water | Connected to the RO faucet at the sink | Delivers filtered drinking water |
| Drain | Connected to the under-sink drain pipe | Expels wastewater during the filtration process |
Removing the Tubing and the Unit
After ensuring all lines are detached, you will need to remove the tubing from the unit itself. Be gentle when pulling the connectors off the ports, as excessive force can damage the plastic fittings. If a connector is stuck, double-check that the locking mechanism has been released rather than forcing the tube off.
With the water lines disconnected, you can now lift the reverse osmosis system out of its location. These units are heavy when wet due to the filtration cartridges and the holding tank, so it is wise to get assistance to carry it out of the kitchen. Once removed, you can dispose of the system or prepare it for transport if you are moving it to a new location.
Addressing the Drain Line and Final Checks
The drain line is often the most overlooked component during removal. This line carries concentrate water away from the system and is usually connected to the sink's drain pipe via a plastic adapter. To remove it, you may need to unscrew the nut that holds the adapter in place on the drain pipe.
Before you finish, take a moment to inspect the area where the system was installed. Check for any signs of leakage or water damage that might have occurred during the system's lifetime. Wiping down the cabinet underneath the sink ensures that the area is completely dry before you install your new setup or repurpose the space.
