Sensing Arm & Linkage; Timing Switches; Thermal Cut-Out(Tco) - Electrolux Side by Side Refrigerator Service Manual

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
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, raise the Sensing Arm until it locks in the upper
positiono or turn the switch located on the housing at the left end of the icemaker to
off. Operation is resumed when the Sensing Arm is manually lowered or 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.
1. Hold Switch - Assures completion of a 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 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.
Section F - Ice Maker
85
Figure F2