Part Number 80-1505-3 6/11 143
Twin Expansion Valve – S1470C/S1870C/S2070C/S2170C
Operational Analysis 1 2 3 4
Ice Production
Published 24-hour ice production __________
Calculated (actual) 24-hour ice production __________
NOTE: The ice machine is operating properly if the ice fill pattern is normal
and ice production is within 10% of charted capacity.
Installation and Water System
All installation and water-related problems must be corrected before proceeding with chart.
Ice Formation Pattern
Left _______________
Right ______________
Ice formation is
extremely thin on outlet
of one
evaporator
-or-
No ice formation on top
of one
evaporator
Ice formation is
normal
-or-
Ice formation is
extremely thin on outlet
of one or both
evaporators
-or-
No ice formation on
one or both
evaporators
Ice formation
is normal
-or-
Ice formation is
extremely thin on the
inlet of one
evaporator
-or-
No ice formation on one
evaporator
Ice formation
is normal
-or-
No ice formation on
both evaporators