Pro-OX 1650 Iron Filter Installation & Startup Guide
Page 9 www.cleanwaterstore.com
Rev 080814
Fig. 5—CWS 165 bypass and pipe connectors (In service mode)
10. Lubricate the bypass valve O-rings with some vegetable oil or silicone grease and connect the bypass
assembly to the control valve by sliding the bypass valve firmly into its body.
11. Next, lubricate the end-connectors with some silicone grease or vegetable cooking oil and insert them
into the bypass valve. Then, insert the red clips to lock them into place.
12. Make sure both knobs are in the bypass position. It is not necessary to remove the red clips in order to
put the bypass valve into either bypass or service mode.
13. Now install your water pipes to the bypass valve’s end connectors. Make sure the inlet is installed to
the IN pipe connector and the outlet to the OUT connector.
14. Connect some flexible tubing from the drain connection on the CWS 165 control valve to a suitable
drain such as a septic tank or drain to a sewer. It is ok to run the drain line up and over the filter up to
4 feet above the tank. If the drain will be more than 20 feet, use larger diameter tubing such as 3/4” or
1”. Note that is desirable to be able to run the drain line into a bucket in order to test the backwash
flow rate in the future. This is why hard piping the drain line is discouraged. However, you may use
hard PVC piping for the drain line if you are able to remove it and attach flexible tubing should you ever
desire for testing purposes. Make sure the drain line tubing is firmly clamped to the barbed fitting with
a hose clamp to prevent leaks.
15. Plug your CWS 165 control valve into an outlet. After being plugged in, the screen may display
“WAITING PLEASE” while it finds the service position. By default, the control valve will be set to work
like a water softener, which is obviously not correct for this application, so you’ll need to program the
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