104 Part Number 80-1479-3 7/10
Harvest Valve Temperature
Wait 5 minutes into the freeze
cycle.
Compare temperatures of
compressor discharge line and
harvest valve inlets.
One harvest valve
inlet is Hot
-and-
approaches the
temperature of a
Hot compressor
discharge line.
All harvest valve
inlets are Cool
enough to hold
and
the compressor
discharge line is
Hot.
All harvest valve
inlets are Cool
enough to hold
and-
the compressor
discharge line is
Cool
enough to hold
hand on.
All harvest valve
inlets are Cool
enough to hold
and-
the compressor
discharge line is
Hot.
All harvest valve
inlets are Cool
enough to hold
and-
the compressor
discharge line is
Cool
enough to hold
hand on.
Discharge Line
Temperature
Record freeze cycle discharge
line temperature at the end of the
freeze cycle
_________°F (°C)
Discharge line
temperature 150°F
(65°C)
or higher at the
end of the freeze
cycle
Discharge line
temperature
150°F (65°C)
or higher at the
end of the freeze
cycle
Discharge line
temperature
less than
150°F (65°C) at
the end of the
freeze cycle
or
Compressor
shell is frosted
Discharge line
temperature 150°F
(65°C) or higher at
the end of the
freeze cycle
Discharge line
temperature
less than
150°F (65°C) at
the end of the
freeze cycle
or
Compressor shell
is frosted
Final Analysis
Enter total number of boxes
checked in each column.
Harvest Valve
Leaking
Low On Charge
-Or-
TXV Starving
TXV Flooding Compressor
Harvest Pressure
Valve Leaking
S MODELS FOUR EXPANSION VALVES
Operational Analysis 1 2 3 4 5