Maytag MWF4100AWS Operation And Maintenance Manual page 17

Remove the cap
and internal prefilter
from the System
During this procedure, DO NOT open the Bypass Valves, as this will allow potentially
contaminated water into the household distribution system. Contaminated water may
lead to personal injury and/or death.
Cleaning the
Stainless Steel
Prefilter
MAYTAG Whole Home Water Filtration System Owners Manual MA1-5
November 2003
5. After allowing the System to drain for 1 minute, remove the System cap
using the cap wrench (not supplied, available from MAYTAG). To
remove, turn counter-clockwise as indicated on the top of the cap.
Photo 4.
Cap Removal
6. Pull the internal prefilter straight up and out of the internal prefilter
housing. The prefilter may be a Carbon Prefilter or a Stainless Steel
Prefilter depending on your model. Place the prefilter in a clean pail or
sink to allow draining. If you have a Carbon Prefilter, dispose in a plastic
bag. If you have a Stainless Steel Prefilter, set it aside until step 9.
7. Wipe out inside of cap and filter chamber with a clean cloth.
8. Inspect System o-ring (located above the System threads for the System
Cap) for any wear or damage. Very small nicks in the o-ring can result in
leaks. If necessary replace o-ring and use a very small amount of NSF
approved lube (available from your MAYTAG Qualified Dealer) to
regrease the o-ring.
9. If you have a Stainless Steel Prefilter, the outer surface of the Stainless
Steel Prefilter can be cleaned to remove accumulated grit or debris.
Use a brush to loosen solid material and rinse with clean water. It may
be necessary to use water from a point in the system upstream of the
System's shutoff valve or an alternate water source for rinsing.
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