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REFRIGERATION COMPONENT
DIAGNOSTIC CHARTS
General
All electrical and water-related problems must be
corrected before these charts will work properly. These
tables must be used with charts, checklists and other
references to eliminate refrigeration components not
listed and external items and problems that will cause
good refrigeration components to appear defective.
The tables list four different defects that may affect the
ice machine’s operation.
Procedure
Step 1. Complete each item individually in the
“Operational Analysis” column.
Enter check marks (✓) in the boxes.
Each time the actual findings of an item in the
“Operational Analysis” column matches the published
findings on the table, enter a check mark.
Example: Freeze cycle suction pressure is determined
to be low. Enter a check mark in the “low” box.
Perform the procedures and check all information
listed. Each item in this column has supporting
reference material.
While analyzing each item separately, you may find an
“external problem” causing a good refrigerant
component to appear bad. Correct problems as they
are found. If the operational problem is found, it is
not necessary to complete the remaining
procedures.
Step 2. Add the check marks listed under each of the
four columns. Note the column number with the
highest total and proceed to “Final Analysis.”
NOTE: If two columns have matching high numbers, a
procedure was not performed properly and/or
supporting material was not analyzed correctly.
Final Analysis
The column with the highest number of check marks
identifies the refrigeration problem.
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