MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
28
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.)
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.
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
Photo 8. ¾” Plug in Automated
Drain Valve
Photo 9. ¾” Plug in Stainless Steel
Flex Hose in Outlet Line
