PRODUCT OPERATION

THEORY OF OPERATION

INTRODUCTION

The Maytag Epic Front-Loading Automatic Washer presents a number of new features and operating characteristics quite different from previous models. The washer contains a number of unique operating features designed to increase clothes cleaning ability while offer- ing very high water and energy conservation.

WATER SYSTEM

The water system consists of the hot and cold water inlet valves, a water temperature sensor, a water flowmeter and control, and the dis- penser distribution system along with a tradi- tional pressure switch.

WATER INLET VALVES

The hot and cold water inlet valves are located at the back of the washer. These valves re- ceive a control signal from the Central Control Unit to manage the temperature of incoming water. The temperatures are determined by the specific wash cycle selected and a tem- perature sensor located in the wash tub. To improve cleaning of heavily soiled clothing and to provide a sanitizing feature, the water tem- perature can be increased through the use of a heating element located in the bottom of the tub.

FLOWMETER

The flowmeter is also used to introduce addi- tional water into the tub for higher water levels, based on cycle requirements.

Flowmeter

DISPENSER DISTRIBUTION SYSTEM

All wash and rinse water is introduced into the wash tub through a Dispenser Distribution Sys- tem located in the top left corner of the washer. The system consists of a motor that turns a cam gear. The cam follower will divert the incoming water to one or more of the follow water inlet modes:

Detergent Dispensing

Bleach Dispensing

Fabric Softener Dispensing

Rinse Dispensing (no additives)

Water flow, or the quantity of water introduced throughout any cycle, is monitored by a flow- meter and Central Control Unit. When the flowmeter registers a maximum of 10.5 gal (40 L), and the Central Control Unit has not detected the pressure switch trip, the water valves will be shut off and an error code will show in the digital display.

Cam

Dispenser

Motor

Cam

Actuator

Water Follower

Distribution

Lever

3-1

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Whirlpool MFW 9700S, MFW 9600S manual Theory of Operation