Speed Control; Tub Construction - Frigidaire Affinity 6000 Series Service Manual

Speed Control

The speed control board is mounted to the base plate of
the washer in the left rear corner of the washer. The
speed control board controls the following operations:
1. The speed of the drive motor by converting input
line to neutral single phase 60 Hertz voltage, to a
varying frequency, three phase output voltage from
zero to 300 VAC. By varying the amount, frequency,
and polarity of the voltage and comparing the input
from the tachogenerator on the drive motor, the
speed control board can operate the drive motor at a
pre programmed speed and direction.
2. The balance of the load in the washer during the
spin cycle by converting the sine wave from the
tachogenerator to square waves and comparing the
distance between the square waves.
Figure 1-38. Speed Control

Tub Construction

The front loading tumble action clothes washer consists
of a perforated, cylindrical spin basket suspended
horizontally on its axis within a larger solid cylindrical tub.
This assembly is suspended by springs within a four
piece steel cabinet. A see through door and a fl exible
bellows (seal) provides access for loading and unloading.
Cabinet
The cabinet is made of heavy steel in a four piece design.
The sides and rear are Tog-l-loked at the rear corners
and base. The rear of the cabinet is galvanized steel with
an access panel.
Front Panel and Door Assembly
The front panel is attached with screws to the console
mounting brace and base plate.
Section 1 Basic Information
Bellows
The bellows is a rubber sleeve that seals the suspended
outer tub to the stationary cabinet front at the tub
opening. Its purpose is to provide a water tight opening
into the tub that can be sealed by the cabinet door, yet
allow fl exibility for the oscillation of the tub during the
wash and spin cycles.
Outer Tub Assembly
The outer tub assembly is supported by two suspension
springs and stabilized by two air shock assemblies. A
cement counter weight mounted to the front of the outer
tub. Another weight is molded into the rear half of the
outer tub. These counterweights prevent excessive
oscillation of the entire suspended assembly during an
unbalanced spin cycle.
Spin Basket Assembly
The spin basket is constructed of stainless steel. The
circumference of the basket is perforated to allow water
to fl ow through it as it revolves. A heavy steel shaft is
pressed into the spin basket support which is then bolted
to the basket. The spin basket assembly is entirely
supported by two ball bearing assemblies pressed into
the rear of the outer tub.
A large drive pulley is mounted to the free end of the
shaft that extends through the rear of the outer tub.
There are three plastic vanes mounted to the spin basket
to aid in the washing action during the wash cycle. The
rotation of the spin basket provides both the washing
action during the wash cycle and water extraction during
the spin cycle.
Retaining Spring
Figure 1-39.
Bellows (Door Boot)
Outer Tub Rear
Spin Basket
Outer Tub Front
1-15