Maytag Atlantis - Manual (Page 86)

WATER LEVEL SWITCH Water Level Switch Operation
The water level switch is secured to the con­
trol console by means of two locking tabs on
the switch body [Figure 8-16).
The water level switch is operated by a col­
umn of air that becomes trapped in the pres­
sure switch hose. This hose is connected be­
tween the diaphragm section of the switch
and air bell which is located on the lower por­
tion of the tub. As water enters the tub, a
small amount enters the pressure switch hose
thereby trapping air in the hose. As the water
level increases in the tub, this column of air
becomes compressed and exerts pressure on
the water level switch diaphragm. When the
proper water level is reached the diaphragm
actuates a single pole, double throw switch in
the water level switch assembly.
The water level switch is quite sensitive and
requires only about 0.6 RS.I. to activate it at
the maximum fill position.
It is most important that the hose connections
to the switch diaphragm and air bell nipple
be airtight, as the smallest air leak will cause
erratic operation.
__ IMPORTANT_____________________
The water level switch is adjusted and
sealed at the manufacturing source and no
adjustments should be made in the field.
Whenever the hose is removed from the wa­
ter level switch or the air bell nipple, DO NOT
reconnect the hose until all water has been
drained from the tub. To ensure proper op­
eration of the water level switch, the hose
MUST NOT have any water in it when rein­
stalled on the switch. When reconnecting the
hose, be sure to slip it over the nipple(s) as far
as possible.
The circuitry of the machine is designed to
put the switch in control of the water mixing
valve or the timer motor and drive motor dur­
ing various phases of the wash cycle.
During the fill cycle, the switch makes a cir­
cuit between terminals 7 and 15 which ener­
gizes the mixing valve circuit(s). (Figure 8-
16) When the switch is activated, it opens the
circuit between terminals 7 and 15 which
shuts off the water, and closes a circuit be­
tween terminals 7 and 16 which energizes the
timer motor and drive motor.
Testing the Water Level Switch
The water level switch can be accessed as pre­
viously detailed in Section 4 under Control
Pane! Disassembly. It can be tested using an
ohmmeter and executing the following.
16009485-01 Section 8. Electrical Components & Testing
©1999 Maytag Appliances Sales Company
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