Maytag MWF4200AWS Technical Information download pdf (Page 40)

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empty at which point the automatic valves reverse and filling occurs. Once full, the System is again ready

to provide filtered water.

Figure 4.9 – Drain Cleaning Cycle

4.5 MAYTAG Certification and Testing Summary

The MAYTAG Whole Home Water Filtration System conforms to ANSI/NSF 42/53 for the claims set out

below, as verified and substantiated by test data. Current MAYTAG System certifications, as well as the

limits to those certifications held, are listed below. Updates can be found on the MAYTAG website at

www.MAYTAG.com. For complete statistical analysis and full details of the certification and limits of

certification, MAYTAG Services Qualified Service Technicians are asked to review the studies

themselves, which are available upon written request from MAYTAG.

4.5.1 NSF Certifications

NSF International is the world’s leading testing and certification laboratory for Water Treatment Products.

Figure 4.8 – System Cross Section Drain

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Maytag MWF4200AWS Technical Information Page 40