Thermostat; Sensing Arm & Linkage; Timing Stitches; Thermal Cut-Out (Tco) - Electrolux E23CS75DSS0 Service Manual

The solenoid coil draws 10 to 20 watts of power.
The coil is wired in series with the mold heater,
across the supply voltage.
Thermostat (Figure F6)
The thermostat is a single-pole, single throw
(SPST), bimetallic, disk-type, thermal switch. It
automatically starts the harvest cycle when the ice
is frozen. The thermostat closes at a temperature
of 9°F ± 2°. Wired in series with the mold heater,
the thermostat acts as a safety device against
overheating in the event of mechanical failure.
A thermal mastic bond is provided where the
thermostat is mounted against the mold. A gasket
prevents water from leaking into the support
housing.
Sensing Arm & Linkage (Figure F5 &
F6)
The sensing arm is cam-driven and operates a
switch that controls the quantity of ice produced. In
the harvest Cycle, the arm is raised and lowered
during each of the two revolutions of the timing
cam. If the sensing arm comes to rest on top
of ice in the storage compartment during either
revolution, the switch will remain open and stop
the ice maker at the end of that revolution. When
sufficient ice is removed from the storage container,
the sensing arm lowers and ice production
resumes. To manually stop the ice maker turn the
switch located on the housing at the left end of the
icemaker to off. Operation is resumed when the
switch is turned back to on.
Timing Switches (See Figure F2)
The three timing switches used are single- pole,
double throw (SPDT). They are identical except for
function, and can be used interchangeably.
Hold Switch - assures completion of a
1.
revolution once the ice maker operation has
started.
2. Water Fill Switch - opens the water valve
during the fill cycle. It is the only adjustable
component in the ice maker.
3. Shut-Off Switch - stops ice maker operation
when the storage container is full of Ice. The
switch is opened after the sensing arm is
raised to its most upright position. The switch
is mounted to the top right wall of the ice
maker support. (Not shown in Figure F6)
Section F - Ice Maker
Mounting Plate Back View
Timing Cam
Water Fill
Switch
Figure F2

Thermal Cut-Out (TCO)

The thermal cut-out is a one-time limit fuse used
as a safety device. It is located under the mounting
plate, in the head of the ice maker, between the
thermostat and wire connector.
If the thermal cut-out opens, the cause of failure
must be determined and corrected prior to
replacing the TCO. Normals causes of the TCO
failing are a bad thermostat or a shorted coil on the
water valve.
Timing Cam & Coupler
Three separate cams are combined in one molded
Delrin part:
1. Inner cam operates shut-off switch lever arm.
2. Center cam operates hold switch.
3. Outer cam operates water fill switch.
One cam end is attached to a large timing gear.
The other cam end is coupled to the ejector.
Timing Gear (Figure F1)
This large molded plastic gear is driven by the
motor and, in turn, rotates the cam and ejector.
A "D" shaped hole in the gear fits over the timing
cam hub. Spacer tabs on the backside of the gear
prevent the gear from binding on the mounting
plate.
Motor (Figure F2)
A low wattage, stall-type motor drives the timing
gear. This gear turns the timing cam and ejector
blades approximately one revolution every three
minute (1/3 RPM).
85
Motor
Hold
Switch