Winterizing The Ice Machine - Sub-Zero 315I Technical Service And Parts Manual

Maintenance & Cleaning

Winterizing the Ice Machine

The instructions below are for those units installed in
homes left unoccupied for extended periods of time dur-
ing winter months. If the ice maker is in a residence
used year round, these directions need not be followed.
1. Clean the ice making system, condenser and ice
storage bin as described on the preceding pages.
2. Turn off the water supply to the unit.
3. Locate the bottom hose that runs from the circulat-
ing/spray pump to the reservoir. Loosen the hose
clamp on that hose and disconnect the hose from
the reservoir. (See Figure 4-8) This will drain the
reservoir.
4. Pull the control knob from the ice machine control
shaft. (See Figure 4-9)
5. Remove the control face plate by pulling the top for-
ward to disengage the velcro strips, then lift up.
(See Figure 4-9)
6. Remove the inner control access panel by extract-
ing the three screws, then lower the panel slightly
and pull forward. (See Figure 4-9)
7. Locate the water valve and disconnect the inlet
water line from the water valve. (See Figure 4-10)
8. Locate the cycle timer and rotate the shaft clock-
wise until the cam is in the harvest cycle position
(switch button out). (See Figure 4-11)
9. With the appliance operating, blow air through the
water valve with a tire pump or similar device. This
will purge the valve and water system of water.
10. If winterizing a model 315IP (with drain pump), pour
1/2 gallon of "RV antifreeze" (propylene glycol)
down the bin drain.
Do not use automotive antifreeze as this is
unsanitary and may damage the appliance. The
antifreeze must be propylene glycol.
11. Switch the unit to OFF, prop the door open and dis-
connect power to the ice maker.
#3757320 - Revision B - August, 2005
Model 315I (UC Ice Maker)
Disconnect
this hose
Figure 4-8. Emptying Water from Reservoir
Inner Control
Access Panel
Remove Control Knob, Face Plate & Access Panel
Water Valve
Figure 4-10. Disconnect Water Line
Figure 4-11. Rotate Timer Cam to Harvest Position
4-4
Spray Pump
Control
Control
Face Plate
Knob
Figure 4-9.
Inlet Water Line
Reservoir