Part Number STH042 7/15 69
Ice Formation Pattern
Evaporator ice formation pattern analysis is helpful in ice
machine diagnostics.
Analyzing the ice formation pattern alone cannot
diagnose an ice machine malfunction. However, when
this analysis is used along with Manitowoc’s Refrigeration
System Operational Analysis Table, it can help diagnose
an ice machine malfunction.
OUTLET
INLET
OUTLET
INLET
U0140 U0190 U0240 U0310
Examples of Evaporator Tubing Routing
Normal Ice Formation
Ice forms across the entire evaporator surface.
At the beginning of the Freeze cycle, it may appear that
more ice is forming on the inlet of the evaporator than at
the outlet. At the end of the Freeze cycle, ice formation
at the outlet will be close to, or just a bit thinner than, ice
formation at the inlet. The dimples in the cubes at the
outlet of the evaporator may be more pronounced than
those at the inlet. This is normal.
If ice forms uniformly across the evaporator surface, but
does not do so in the proper amount of time, this is still
considered a normal ice fill pattern.
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