The cycle begins with a wash fill. The water temperature is deter-
mined by the temperature selected. While water fills the washtub,
a column of air is trapped in a pressure bulb and hose. The air
pressure continues to increase as the washtub fills with water un-
til it is great enough to trip the pressure sensor at the selected wa-
ter level. The pressure sensor trip then causes the wash fill to stop
and wash agitation to begin. However, the lid must be closed for
the washer to fill, agitate or spin.
The washer uses a reversing type motor, a special drive belt and
an idler assembly. The idler assembly applies tension to the out-
side of the drive belt.
During agitation, the motor runs in the counterclockwise direc-
tion. The spring tension on the idler pulley applies the tension re-
quired to reduce the slack on the drive belt and maintain maxi-
mum belt to motor pulley contact. This eliminates belt slippage
and ensures an efficient wash action, even with extra large loads.
The belt drives the transmission drive pulley in the counterclock-
wise direction. The pulley drives the helix which is splined to the
input shaft of the transmission. This causes the input shaft to turn
inside of a roller clutch which is pressed into the transmission
cover. This roller clutch acts as a bearing in the counterclockwise
direction allowing the transmission gears to operate. The trans-
mission’s rack and pinion gear design produces a 210 degree agi-
tation stroke at the output shaft of the transmission which drives
the agitator. The brake assembly remains locked during the agita-
tion mode since no pressure is applied to it by the transmission
drive pulley.
After the wash agitation is completed, the control advances into
the first spin. During spin, the motor reverses turning in the
clockwise direction to spin the water out of the washtub. The
combination of water, washtub and load weight cause the drive
belt tension on the idler side of the belt to overtake the idler
spring pressure allowing the belt to become slack on the opposite
side. This reduces the belt to pulley contact and allows slipping
between the belt and pulley.
As water is removed by the pump and the momentum of the
washtub increases, the idler spring tension gradually overcomes
the belt tension removing the belt slack. This eventually increases
the belt to pulley contact until maximum spin speed is achieved.
The drive pulley turns clockwise riding up the ramps of the helix,
exerting pressure on the brake and forcing it to release from
brake pads. The helix drives the input shaft of the transmission,
and when the input shaft turns in the clockwise direction the roll-
er clutch locks onto the shaft causing the entire transmission as-
sembly to turn. None of the gears in the transmission are operat-
ing at this time. The hub of the washtub is splined to the trans-
mission tube and rotates with the transmission assembly. The
centrifugal force created by the spinning washtub causes water to
be extracted from the clothes.
The clothes are then rinsed by water spraying onto them while
the load is spinning. This water is forced through the clothes by
the centrifugal acceleration. The resulting rinse water is immedi-
ately extracted. Following rinse spray, a final spin extracts the re-
maining rinse water from the clothes preparing them for the dry-
er.
Introduction
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10
Part No. 204591EN
