72
Dometic
®
MANUAL
Refrigerators
THIS SECTION REFERS TO THE ICE MAKER CYCLE WITHOUT A COMPRESSOR
1G. ICE MAKER COMPONENTS
MOLD HEATER
The mold heater uses 165 watts to thaw the ice free
from the mold. It is wired in series with the thermostat
which also acts as a
safety device. With
power to the appli-
ance off, check for
resistance between
the two leads to the
heater element.You
should obtain a
reading of approxi-
mately 80 ohms. If
the heater is found to
be defective, the manufacturer recommends replace-
ment of the entire ice making unit for proper operation.
ICE EJECTOR
The ice ejector blades sweep
the ice from the mold
cavities during the
ejection cycle.
The drive end of the
ejector is “D” shaped
for positive coupling.
The bearings at both
ends are lubricated
with silicone grease If the ejector blades are frozen into
the ice, defrost the ice maker and manually cycle the
ice making unit, making sure the ejector stops at the
right location.
MOLD HEATER
(Staked in Place)
"D" SHAPED
DRIVE END
MOLD THERMOSTAT
This is a single-pole, single-throw, bimetal switch. It
starts an ejection cycle by closing at 18°F ± 5°. The
reset temperature is 50°F± 5°. The thermostat is in
series with the mold heater and acts as a safety against
overheating in case of a mechanical failure. If the
thermostat is defective, replace it.
CLAMP
THERMOSTAT
SHUTOFF ARM
The shutoff arm is cam driven. It operates a switch to
control the quantity of ice produced. During the ejection
cycle the arm is raised and lowered during each of the
two revolutions of the timing cam. If the shutoff arm
comes to rest on top of the ice in the storage bin during
either revolution, the switch will remain open and stop
the ice maker at the end of that revolution. The arm has
a manual shutoff built into the linkage; by raising the arm
as high as possible, it will lock in that position until
forced down.
If the arm and switch do not operate properly, check for
damage and repair or replace parts as necessary.
ARM DOWN
ICE MAKER
WILL OPERATE
ARM UP
STOPS
OPERATION
SECTION G.
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