General Theory Of Operation - Whirlpool WTW9500E SERIES Service Manual

INTRODUCTION
The new Whirlpool & Maytag Direct Drive, Top Load Washer
represents industry-leading innovation with the new improved
direct drive system. The previous generation direct drive
washer operated using a floating basket to assist in the
NEW COMPONENTS
Sleek Under Glass User Interface — the Whirlpool washer features a new sleek under glass capacitive touch user interface
that asks "what's being washed" followed by "how you want to wash." First select a cycle from the "What to Wash" (Mixed,
Whites, Casuals, Jeans, Towels, Delicates, ActiveWear, and Bulky Sheets) and then select the "How to Wash" (Normal, ColorLast,
HeavyDuty, Oxi Sanitize, Deep Water, Cold Wash, and Quick). This new and improved input will help the customer achieve the
best combination cycle available for the type of items being washed.
What to Wash
Basket — the Whirlpool & Maytag washer has an extra
large basket capacity of 6.2 cu.ft. Other than size, the major
difference from the previous model is that this basket does not
have a flotation chamber to assist with changing between spin
and agitate modes.
Balance Ring
Basket
Balance Ring
Figure 2 - Basket

General Theory of Operation

Figure 1 - User Interface with Intuitive Touch Controls
switching between spin and agitate modes. The new washer
operates with a clutch coil system that provides reliable,
immediate, and smooth shifting between the various wash
modes.
Motor — The motor is an electronically commutated direct-
drive 3-phase BPM (Brushless Permanent Magnet) variable
speed design that moves the impeller and spins the basket
without the use of a transmission. The motor is comprised of
a stator and rotor that are attached to the drive assembly. The
motor direction and speed is controlled by the ACU (Appliance
Control Unit) or main control.
Motor
Whirlpool & Maytag Direct Drive Top Load Washer
GENERAL INFORMATION
How to Wash
Figure 3 - Motor
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Drive
Assembly
1-3
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