Section 4 Ice Maker - Electrolux 5995502399 Service Manual

The Ice Maker is located in the fresh food
compartment in models featuring a dispenser in
the left side door.
Models without the dispenser will have the Ice
Maker mounted in the bottom freezer compartment.
This section is divided into two parts. The first part
covers the fresh food compartment Ice Maker, and
the second part covers the freezer compartment Ice
Maker starting on page 4-33.
Ice Maker Operation
The french door bottom freezer refrigerator has an ice
and water dispenser mounted in the left food door and an
ice maker mounted in the top left corner of the fresh food
compartment.
The ice maker is controlled by a electronic control board
mounted in the top left side of the back panel. This
control oversees the complete operation of ice maker.
The ice maker has its own evaporator for freezing ice in
the ice mold and removing heat from the ice maker
compartment. The evaporator assembly consists of an
electronic control valve, a finger section to freeze ice in
the ice mold, and a fin and tube section to remove heat
from the ice maker compartment. (See Figure 4-2)
The ice maker has its own internal heat exchanger with
the cap tube coming from the machine compartment to
the ice maker. A suction line goes from the ice maker
through the cabinet, to a pressure regulator mounted in
the freezer compartment to the left of the freezer
evaporator.
Heater
Ohms
Mold Heater
Finger Heater
Defrost Heater 378
*Heater Manufacturers' Ratings
Note that there is a +5%/-10% tolerance on the
wattages from the manufacturers.
Figure 4-1. Heater Electrical Specifications
Ice Maker (Fresh Food Compartment)
Watts @ Watts @
115V 120V
96 138 150*
88 150* 164
35* 38
The ice maker will have a drive motor, two position
switches for the ice mold, and a bail arm switch mounted
in the top front. In the center section will be the ice mold
which will move from the fill position on the right, to the
freeze position on the left, when the mold is full of water.
In the freeze position, the fingers from the ice mold
section of the evaporator will extend into the water in the
center of each ice cube position of the ice mold. The ice
mold has a 150 Watt heater attached. (See Figure 4-1)
An NTC (Negative Temperature Coefficient) thermistor is
attached to the ice mold to start the harvest cycle when
the ice mold has reached 28°F. The heater will heat the
mold until the thermistor indicates that the mold temp
has reached 34°F. At this point, the controller will shut
off the heater, pull the mold away from the cubes and
move it to the fill position. Also connected to the mold
are a thermostat and a thermo-fuse as safety devices.
The thermostat will shut off the heater if the mold
reaches 170°F and the thermo-fuse will open if the mold
temperature reaches 220°F. The center section also
contains the fill spout for water entering the ice maker
when ice mold is on the right side. (Water fill position)
EEV
Valve
Hot
Cap Tube
Tube
Ice Maker
Evaporator
Filter Drier
Condenser
Figure 4-2. Ice Maker Refrigeration Schematic
4-1
Evaporator
Pressure
Ice Maker
Regulator
Accumulator
Freezer
Evaporator
Cap Tube
Freezer
Evaporator
Compressor