Table of Contents
Advertisement
84
Section F - Ice Maker
Mold Heater
A Mold Heater, rated at 120 watts at 110volts, 110 ohms ± 10% or 120 watt at 230
volts, 340 ohms ± 10%, and covered with an aluminum sheath, is embedded in the
grooved section on the underside of the Mold. When the Mold Heater is energized,
the ice contact surface within the Mold is heated enough to allow harvest of the ice
pieces.
The Mold Heater is wired in series with the Ice Maker Thermostat, which acts as a
safety device.
The heater is staked in place, and is replaced as part of the ice maker Mold.
A thermal mastic sealer is placed between the heater and the Mold to ensure good
thermal contact.
Ice Stripper
A Ice Stripper is attached to the Mold to prevent ice pieces from falling back into the
Mold. It also serves as a decorative side cover.
Ice Ejector
The Ejector blades are molded from Delrin, and extend from a central shaft, which
turns in nylon bearings at the front and rear. Each blade sweeps an ice section out
of the Mold. The drive end of the Ice Ejector is "D" shaped. Food Grade Silicone
grease is used to lubricate the bearing surfaces.
Water Valve Assembly
The Water Valves are solenoid operated and when energized, releases water from
the water tank in the foood compartment into the Ice Mold. The amount of water
released is directly proportional to the length of time the Water Valve Switch is
energized. A flow washer, inside the Water Valve, maintains a constant rate of
water flow over a supply line pressing ranging from 20 to 100 psig. It will not
compensate for pressures below 20 psig, or greater than 100 psig. A No. 80-mesh
screen, placed ahead of the flow washer, filters out foreign materials.
The solenoid coil draws 20 watts of power. The coils are wired in series with the
Mold Heater, across the supply voltage.
Thermostat
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 18°F ± 6°. Wired in series with the Mold
Heater, the Thermostat acts as a safety device against overheating in the event of
Hide quick links:
Advertisement
Table of Contents
