Whirlpool APARTMENT MAINTENANCE SERIES, Service Manual

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43
Fig. 3
Spin Cycle
NOTE: See SPIN Strip Circuit on page 68.
The drain pump and brake solenoid are energized at the beginning of the Spin Cycle. The energized
brake solenoid releases the brake and engages the splutch.
For the first 120 seconds of the Spin Cycle the electronic control board sequentially cycles the drive
motor on and off to allow the basket to slowly build up speed. This sub-interval timing loop allows the
water and suds to move through the drain holes in the basket and flow down the outside of the basket.
This draining action keeps the suds from building up between the basket and the tub. If this did not
occur, the suds build up could cause the motor to go into thermal overload and shorten its life.
Duration of Rotation Cycle Duration
45 sec.
3 sec.
14 sec.
20 sec.
8 sec.
20 sec.
10 sec.
Remainder of Spin Cycle
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Spin Start Up Sequence (S.I.S.)
Heavy Duty and Normal Rinse Cycle Spin: S.I.S. runs for 120 seconds.
Permanent Press and Gentle Cycle Spin: S.I.S. runs through entire spin.
Table 6
The Splutch Assembly
The splutch slider has teeth around the bottom hub that mate with the teeth in the pulley. The engag-
ing and disengaging of these teeth changes the drive motor from operating the agitator or spinning the
tub.
(Fig. 3)
The hub of the slider is grooved to fit over the lower splined end of
the spin tube on the gearcase assembly. The upper portion of the
spin tube is connected directly to the basket. As long as the slider
is engaged with the splutch pulley the basket will rotate.
The cam ring controls the movement of the slider up or down. As
the cam ring rotates, the tabs on the bottom slide up and down on
mating tabs in the splutch housing. This up and down movement
of the cam ring controls the movement of the slider. A spring main-
tains pressure between the two sets of tabs.
The rotation of the cam ring is controlled by the brake solenoid and
the brake arm assembly. This assembly also has a brake band
which is wrapped around a rotor on the end of the spin tube. When
the solenoid is energized:
a) The brake arm rotates to loosen the brake band around
the rotor.
b) The cam ring rotates to lower the slider.