Maytag Atlantis - Manual (Page 81)

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NOTE: Normal resistance of each coii is
approximateiy 500-1000 ohms.
4. Place one test lead on one terminal of the
solenoid being tested, and place the other
lead on a suitable ground. The meter
should not indicate continuity.
MOTOR
Ail washers are equipped with split phase re­
versible motors (Figure 8-9). The motor is 1/2
H.R, two speed. The motors have a four (4)
pole and a six (6) pole winding and run at 1725
R.RM. or 1149 R.RM. respectively.
Thermistor Check
The thermistor in the water valve changes in
resistance in direct relationship to water tem­
peratures. The Thermistor is a NTC (Nega­
tive Coefficient Thermistor) type. As the tem­
perature rises the resistance value will de­
crease. When the temperature drops, the re­
sistance value will increase
1. Run a partial hot water fill and check the
ohm resistance of the thermistor circuit.
To check the ohm resistance, puli the tem­
perature control wire harness connector
off the temperature control board and lo­
cate the number 16 and 17 sockets in the
connector (Figure 8-8).
2. Run a cold water fill and measure the re­
sistance again. There should be a notable
difference in the resistance readings.
TEMPERATURE CONTROL CONNECTOR
BU OR GY GY PK BU PÜ BR PU RD OR YL PU BK YL BU OR fUK WH
11 13 47 47 4 25 51 3 27 26 29 LI 35 37 39 7N
19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Figure 8-8
Each motor has an internal thermal overload
protector which opens when exposed to ex­
cessive amperage draw. The overload pro­
tector is wired in series with line voltage to
the motor. When the switch opens, the mo­
tor will shut down. Although the thermal over­
load protector switch will reset, it is not field
serviceable.
MOTOR SWITCH
The externally mounted motor switch is a
mechanically operated device used to control
the power input when the motor starts.
The motor switch has two sets of contacts
which operate simultaneously. One set con­
trols the start winding circuit. The second
set feeds the normal speed circuit, and
then switches the circuit to the slow speed
winding.
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.
When the motor reaches switching speed, the
switches move opening the circuit to the start
winding and at the same time transferring the
power from the normal speed winding to the
slow speed winding.
16009485-01
©1999 Maytag Appliances Sales Company
Sections. Electrical Components & Testing
8-11