Adjusting The Bin Thermostat; Cube Weight Adjustment; Adjusting Freeze Cycle Finish Time; Checking The Additional Freeze Cycle Time - Sub-Zero UC-15I Service Manual

Model UC-15I (Undercounter Ice Machine)
Testing and Adjusting the Bin Thermostat
The bin thermostat stops the ice machine when the bin
is full. It is preset for normal ambient temperatures and
adjustments are usually not required.
Testing the Bin Thermostat - The thermostat is func-
tioning correctly if, when three ice cubes are placed on
the thermostat tube for 5 minutes, the ice machine
stops. The ice machine should restart 5 minutes after
the cubes are removed.
Adjusting the Bin Thermostat - If the ice machine
stops before the bin is full or runs after the bin is full,
ambient temperatures are probably high or low and the
bin thermostat can be adjusted as follows (See Figure
3-14):
POWER IS SUPPLIED TO ICE MACHINE DURING
THIS PROCEDURE. AVOID CONTACT WITH THE
FAN BLADE AND THE ELECTRICAL CONNEC-
TIONS.
1. To access the thermostat, extract the four kickplate
mounting screws and pull kickplate forward.
2. Turn the thermostat shaft clockwise to decrease the
level of ice before automatic shut-off; turn counter-
clockwise to increase the level of ice before auto-
matic shut-off.
3. Reattach the kickplate.
Bin Thermostat
Figure 3-14. Bin Thermostat Adjustment

Cube Weight Adjustment

The ice machine has been programmed to produce the
proper cube weight, based on average ambient air and
water temperatures. Cube weight can be increased
from the factory setting, reducing the amount of dimple
in the cube, by adjusting the freeze cycle finish time in
one (1) minute increments.
Adjusting Freeze Cycle Finishing Time - To adjust
freeze cycle finish time press and hold the POWER but-
ton. While holding the POWER button, press and
release the CLEAN button once for each additional
minute of freeze cycle time desired. (See Figure 3-15)
Press
and
Hold
Figure 3-15. Adjusting Freeze Cycle Finish Time
It is recommended to adjust in one (1) minute incre-
ments and allow the ice machine to run several
freeze/harvest cycles, then inspect the ice cubes. If a
heavier cube weight is desired add another minute of
freeze time and repeat the process.
NOTE: Five (5) minutes is the maximum additional
freeze time that can be added. Pressing the CLEAN
button 6 times will reset the finishing time to zero (0)
additional minutes.
Checking the Additional Freeze Cycle Time - To
check the number of minutes that have been added to
the freeze cycle time (See Figure 3-16):
1. Press and hold the POWER button for five (5) sec-
onds.
2. Count number of times the ICE light flashes. Each
flash indicates an additional minute of freeze cycle
time.
Press and
Hold for 5
Seconds
Figure 3-16. Checking for Additional Freeze
Cycle Finish Time
3-11
Theory of Operation
Press Once for
each Additional
Minute Desired
"ICE" Flashes Once
for each Additional
Minute Programmed
#7012423 - Revision A - August, 2009