Motor; Motor Switch - Maytag Jenn-Air Service Manual

EXAMPLE - - - - - - - - - - - ,
Cam
au
shows the switch arm closed,
making contact between terminal 12
and 26 from increments 1 through 18.
This circuit is the cam controlled
aNI
OFF switch in the timer and at incre-
ment 19 it opens, shutting the ma-
chine off.
MOTOR
All washers are equipped with split phase
reversible motors (see the following
figure). The motor is 3/4 H.P., two speed.
The motors have a four (4) pole and a six
(6) pole winding and run at 1725 RPM or
1149 RPM respectively.
Using the Time Sequence Chart:
The sequence chart used in conjunction
with an ohmmeter can be quite effective
when attempting to verify or diagnose
problems in the timer, wiring, or other
electrical parts.
In order to establish exactly which electri-
cal components should be operating
during any given time throughout the
various machine cycles, it is only neces-
sary to determine what particular cycle
and phase of the cycle you are interested
in.
Motor
Motor
Switch
Once the cycle and phase have been
ascertained, locate these along with the
increment at the bottom of the Timer
Sequence Chart. When the cycle, phase
and increment are located, follow the
increment from the bottom to the top of
the chart noting which timer contacts are
involved in the area of concern.
Once the timer contacts have been deter-
mined, the electrical circuits involved can
be traced on the connection diagram by
increment or by phase, if necessary.
A point to point continuity check can be
made to isolate the trouble either in the
timer, wiring harness, or other electrical
components after the circuit has been
traced.
Each motor has an internal overload
protector which will react to a tempera-
ture rise and/or excessive amperage
draw. The overload protector is wired in
series with the line, and all power to the
machine is cut off if the protector switch
opens. The protector switch is not field
serviceable and if it fails, the motor must
be replaced.
MOTOR SWITCH
The externally mounted motor switch is a
mechanically operated device used to
control the power input when the motor
starts.
On two speed motors it is necessary that
the 4 pole winding, the normal speed
winding, be in the circuit each time the
motor starts even if the speed selector
control is set for slow speed operation.
16007667 SECTION 7. ELECTRICAL COMPONENTS AND TESTING
7-3
©
1996 Maytag Corporation