43
After a few degrees of motor rota-
tion, the timing cam switches the
holding switch to its normally open
position; this assures completion of
the cycle. The mold heater remains
energized through the thermostat
circuit. During the rst half of the
cycle, the shut-off arm is raised and
lowered by the timing cam and oper-
ates the shut-off switch.
When the ejector blades reach the
ice in the mold, the motor will stall.
It will remain in this position until
the ice has thawed loose. During
this time the mold heater remains
energized.
Near the completion of the rst rev-
olution, the timing cam closes the
water valve switch. However since
the thermostat is still closed the
mold heater circuit is energized.
Current will not pass through
the water valve solenoid and its
switch. (Electrical current follows
the path of least resistance.)
At the end of the rst revolution
the timing cam opens the holding
switch. However, since the thermo-
stat is still closed a second revolu-
tion begins.
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