Remote Cooled Ice Machines; Refrigeration System; Expansion Valve; Low Refrigerant - Cornelius I-SERIES Training Manual

5.3 Remote Cooled Ice Machines

Refer to I Series Ice Cube Machine Service Manual & Maintenance Guide for
remote condenser installation information and correct refrigeration procedures.
NOTE: When installing a remote ice maker, always open the receiver valve after
connecting refrigerant lines.

5.4 Refrigeration System

Expansion Valve

The expansion valve is factory set at 6° F (-14° C) superheat (difference between
evaporator inlet and outlet). It is non-adjustable. DO NOT REPLACE WITH AN
ADJUSTABLE VALVE.

Low Refrigerant

Observe ice production. If the
refrigerant is low, some of the
top evaporator rows do not form
ice and freeze times are longer.
For optimum ice production and
maximum cube separation, the
ice connecting the individual
cubes should be a minimum of
1/8 inch (.32cm) thick at the cen-
ter area of the evaporator.
It is normal for the ice slab to be
slightly thicker at the bottom and
taper off in a slight wedge pat-
tern at the top. The top row of
cubes must have a complete pat-
tern of ice on all four sides and the back wall. Remember, when you operate the
product with the panels off during testing the additional heat at the top of the evapo-
rator will cause thinner ice at the top.
Should a different thickness of the bridge be desired, it will be required to adjust the
potentiometer (POT), located on the circuit board.
1. Thinner Bridge - turn the ice thickness POT adjustment screw clockwise one full
turn. Allow two cycles before determining if additional adjustments are required.
2. Thicker Bridge - turn the ice thickness POT adjusting screw counterclockwise
one full turn. Allow two cycles before determining if additional adjustments are
required.
© 2001, IMI Cornelius Inc.
I-Series Ice Machine Training Manual
Top row
3/8 - 5/8"
(.95 - 1.59 cm)
dimple
Center
1/8"(.32 cm)
bridge
Bottom 2 rows
3/16 - 1/4"(.48 -
.64 cm) bridge
Ice slab
1/8"(.32 cm)
bridge
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