Maytag MWF4200AWS Technical Information download pdf (Page 105)

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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.

Drain Valve

Advanced

Controller

Base Controller

Bypass

Valve

Inlet

Valve

Outlet Valve

Inlet

Valve

Outlet Valve

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Maytag MWF4200AWS Technical Information Page 105