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6.3.2.3 Installing External Prefilter Replacement
Step 1 - Close the inlet and outlet ball valve.
Turn off the household water. If a bypass valve is
installed, the bypass valve must remain closed.
Step 2 – Release the pressure in the System by
using the controller to drain for 1 minute. Refer to
procedure 5.4.7.3 for use of the Base Controller and
procedure 5.4.8.3 for use of the Advanced
Controller.
Step 3 – Drain the prefilter by removing the valve
plug.
Step 4 – Secure a ¼” hose to the quick connect
fitting and direct the hose into a bucket.
Step 5 – Open the drain valve to drain the prefilter
completely into the bucket.
Step 6 – For more rapid draining, press on the red
button located on the top of the external prefilter
housing.
Controller
Valve
Outlet Valve
Outlet Valve
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