How Your Carbon Filter Works - Clean Water Systems FLECK 7000 Installation & Start?Up Manual

Fleck 7000 Carbon Filter Installation & Startup Guide
4. If you will be using copper piping, do not sweat the copper pipe directly on to the Fleck 7000
control valve. Avoid heating up the Fleck 7000 control valve plastic with the torch.
5. If have copper pipe before the Carbon Filter and it is too difficult to change it, you may still
experience some copper staining of fixtures and have a copper residual in the water, because of
course this section of pipe will still have acidic water flowing through it. We recommend PEX or
PVC pipe up to the Carbon Filter and then copper after it, if you have copper plumbing.
6. You do not need unions to install your Fleck 7000 control. If you need to remove it, the Fleck
7000 has quick-release couplings that make it easy to put the Carbon Carbon Filter filter on by-
pass and remove the filter system from the piping.
7. The drain line tubing (not supplied) is connected to a drain from the drain outlet using flexible
½" ID tubing. Note that the drain can run up above the Fleck 7000 control and into a drain, it
does not have to drain down, as the filter backwashes under line pressure from your well pump.
Most plumbing codes require an air-gap connection, so that if your sewer or septic tank backs
up, it cannot cross connect with the drain tubing.

How Your Carbon Filter Works

See Fig 1. In your Carbon Filter the water enters the top of the tank (red arrows) and flows down
through the media and up the distributor tube (blue arrows). The downflow type Carbon Filter
removes sediment and can be backwashed, which cleans and re-classifies the Carbon, preventing
channeling. During backwash, the water flow is reversed and water flows down the distributor tube and
up through the media, lifting and expanding the Carbon media. During the backwash the Carbon is
cleaned by the action of the water flowing through it.
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