Manitowoc I0320A, Technician'S Handbook

Page: 100 / 182

98
Par
t Number
STH03
8 5/12
The following are the procedures for completing each step of the Freeze Cycle Refrigeration System Operational
Analysis Tables. Each procedure must be performed exactly for the table to work correctly.
Wait 5 minutes into the
freeze cycle.
Compare temperatures of
compressor discharge line
and
harvest valve inlet.
The harvest valve inlet is
Hot
-and-
approaches the
temperature of a
Hot
compressor discharge
line.
The harvest valve inlet
is
Cool
enough to hold
hand on
-and-
the compressor
discharge line is
Hot.
The harvest valve inlet
is
Cool
enough to hold
hand on
-and-
the compressor
discharge line is
Cool
enough to hold hand on.
The harvest valve inlet
is
Cool
enough to hold
hand on
-and-
the compressor
discharge line is
Hot.
Discharge Line
Temperature
Record freeze cycle
discharge line temperature at
the end of the freeze cycle
_________
°C
Discharge line
temperature
71°C or higher
at the end of the freeze
cycle
Discharge line
temperature
71°C or higher
at the end of the freeze
cycle
Discharge line
temperature
71°C or Lower
at the end of the freeze
cycle
Discharge line
temperature
71°C or higher
at the end of the freeze
cycle
Final Analysis
Enter total number of boxes
checked in each column.
Harvest Valve
Leaking
Low On Charge
-Or-
TXV Starving
TXV Flooding Compressor
SINGLE EXPANSION VALVE SELF CONTAINED AIR and WATERCOOLED CONDENSER
Operational Analysis 1 2 3 4