Replacement/Cleaning and System Cleaning Procedure” use the System controller and flush to drain for 5 minutes. To begin draining the household pipes, turn on a nearby cold water tap and leave it on until the tap only drips. Turn off the tap.
3.Remove the drain line from the drain valve and insert a ¾” MNPT Hex PVC plug (available at most hardware stores) to prevent preservative from leaking. Remove hose clamp on drain line and remove elbow. (Refer to Figure 1 for location of drain line on your System and Figure 2 for drain line parts.)
Photo 8. ¾” Plug in Automated
Drain Valve
4.Drain the pipes by disconnecting the outlet line on the side of the stainless steel flex hose furthest from the System. (Refer to Figure 1 for location of outlet line on your System and Figure 3 or 4 depending on your model for the outlet pipe assembly parts.) Drain into bucket for at least 10 minutes.
5.Close the outlet ball valve. (Refer to Photo 1 for location.) Plug the disconnected outlet line on the System side with a ¾” MNPT Hex PVC plug at the end of the Stainless Steel flexhose.
Photo 9. ¾” Plug in Stainless Steel
Flex Hose in Outlet Line
6.If using an External Prefilter, drain the External Prefilter Housing (refer to “Replacing the External Sediment Prefilter Cartridge” section), remove the External Prefilter Cartridge and discard the External Prefilter Cartridge. Replace the External Prefilter Housing without an External Prefilter Cartridge and close the stopcock on the bottom of the External Prefilter Housing.
7.Remove System Cap using the Cap Wrench.
8.Remove Stainless Steel Prefilter (Models MWF4200AWS and MWF4300AWS) or Carbon Prefilter (Model MWF4100AWS). If using a Carbon Prefilter, discard the Carbon Prefilter. If using a Stainless Steel
MAYTAG Whole Home Water Filtration System Owners Manual
November 2003
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