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SWITCH SETTING (MKllA-20}
The machine type (SW1) switch (see Figure 2-3) on the MKllA-20 can be used to configure the
software for different types of machines.
Soft-Mount (MFS) Type Machines 25-351b (10-16 KG)
7
for machines with 3 inlet fill lines
4
for other machines
Soft-Mount (MFS) Type Machines 50-1251b (22-55 KG)
3
for machines with two door coils, 3 inlet fill lines
4
for machines with two door coils, 3 inlet fill lines, 2 drain fill lines
7
for machines with two door coils, 2 inlet fill lines
9
for machines with two door coils, 2 inlet, 2 drain fill lines
EMERGENCY STOP
The emergency switch is a double pole,
double throw switch that is in series with
both sides of the line voltage. When the
switch is pushed in, both sides of line voltage
is disconnected and illuminates a light indi-
cating that the emergency switch has been
tripped.
NOTE:
DO NOT use this switch and assume
all line voltage is eliminated to the machine,
when servicing the product. Power is still
on at the motor contactor and other
controls tray points.
SERVICE DISCONNECT SWITCH
A service disconnect switch is located at the
rear of the machine. The switch is a two-
position, rotary switch and is red in color.
The service disconnect switch serves as the
connection point for the 3 phase power to
the machine and is marked OM.
As connected in the factory, in the "Off"
position (0) all power is removed from the
machine. The "On" position (I) switches three
phase power to the circuit breaker and
control transformer of the machine.
CONTACTORS
Electrical current is supplied to the motors
via contactors. A contactor is a type of high
current relay with a movable core, a sole-
noid, and a multiple contact assembly. The
contactors are designed to handle the motor
loads and current inrush at start for all model
machines.
MFS models use motors with two separate
windings per motor, allowing the basket to
turn at 4 different speeds: wash speed,
distribution speed, low speed spin, and high
speed spin. Each speed is supplied current
by a separate contactor.
The contactors are marked as follows:
KMP
KML
KM1
KM2
KM3
KM4
Wash - right rotation
Wash - left rotation
Distribution
Low Spin
Shorting
High Spin
The solenoids of KM3 and KM4 are con-
nected in parallel and should always be
engaged together when the machine is in
high speed spin. The purpose of the shorting
contactor is to convert the motor from a delta
connection to a double wye connection,
16009607
Section 2. Service Procedures
©1999 Maytag Appliances Sales Company
2-4
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