Sub-Zero 315I Technical Service And Parts Manual page 21

Model 315I (UC Ice Maker)
Water System
The water system provides and recirculates the water
for ice production. It also provides a means of
drainage. After the ice is produced, the water system
flushes the impurities and minerals that were in the
water, down the drain. During routine cleaning, the
water system will circulate the ice machine cleaning
solution. (See Figure 3-2)
Electrical System
Power for the refrigeration system and the water sys-
tem is provided by the electrical system. The electrical
system also controls the operational cycles of the ice
maker. The electrical schematic in figure 3-3 below
illustrates the electrical system of a model 315I during
the ice making cycle.
NEUTRAL
115 / 60 / 1
CIRCUIT
SCHEMATIC
LINE
Figure 3-3. Electrical Schematic of Model 315I (During Ice Making Cycle)
L02
1
RELAY -
S M
CURRENT
R
S
OVERLOAD
1
3
COMPRESSOR
OFF ON
L05
BIN LEVEL
CONTROL
Circulating
(Spray)
Pump
Figure 3-2. Water System (During Ice Making Cycle)
L02 L02
SPRAY
PUMP
MOTOR
L04
L04
C
NO
NC
COMM TIMER
SWITCH
3-3
Theory of Operation
Water Inlet
Cube Molds
Drain
Inlet Water
Valve
L02 L02
FAN WATER HOT GAS
MOTOR SOLENOID SOLENOID
L03 L03
L05
CUBE SIZE
CONTROL
#3757320 - Revision B - August, 2005
Weep Hole
Spray Jets
Water Tube
Reservoir
TIMER
MOTOR
3
2
1