Manitowoc Indigo Series Technician's Handbook page 152

SINGLE EXPANSION VALVE SELF CONTAINED AIR, WATER & REMOTE CONDENSER
Operational Analysis
Wait 5 minutes into the
freeze cycle.
Compare temperatures of
compressor discharge line
and harvest valve inlet.
Discharge Line
Temperature
Record freeze cycle
discharge line temperature at
the end of the freeze cycle
_________°F (°C)
Final Analysis
Enter total number of boxes
checked in each column.
1
The harvest valve inlet is
The harvest valve inlet
Hot
is Cool enough to hold
-and-
approaches the
temperature of a Hot
compressor discharge
line.
Discharge line temp.
150°F (65°C)
or higher at the end of the or higher at the end of
freeze cycle
-------------------------------- ------------------------------
I0850/I1000
Air & Water Only
Discharge line temp.
140°F (60°C) or higher at
or higher at the end of
the end of the freeze
cycle
Harvest Valve
Leaking
2
The harvest valve inlet
is Cool enough to hold
hand on
-and-
the compressor
the compressor
discharge line is Cool
discharge line is Hot.
enough to hold hand on.
Discharge line temp. Discharge line temp.
150°F (65°C)
150°F (65°C) at the end
the freeze cycle of the freeze cycle
--------------------------------
I0850/I1000
Air & Water Only Air & Water Only
Discharge line temp. Discharge line temp.
140°F (60°C)
140°F (60°C) at the end
the freeze cycle of the freeze cycle
Low On Charge
-Or-
TXV Starving
3
The harvest valve inlet
is Cool enough to hold
hand on
-and-
the compressor
discharge line is Hot.
Discharge line temp.
less than 150°F (65°C) or higher
at the end of the freeze
--------------------------------
I0850/I1000 I0850/I1000
Air & Water Only
Discharge line temp.
less than 140°F (60°C)
or higher at the end of
the freeze cycle
TXV Flooding Compressor
4
hand on
-and-
cycle