Part Number 80-1505-3 6/11 145
Harvest Valve
Audible refrigerant flow
through left or right
valve in Freeze cycle
No audible
refrigerant flow through
left or right valve in
Freeze cycle
No audible
refrigerant flow through
left or right valve in
Freeze cycle
No audible
refrigerant flow through
left or right valve in
Freeze cycle
Suction Line Temperature
Attach a temperature probe
on the suction line within 6 in.
of the shut-off valve outlet.
Record the low event at the
end of the Freeze cycle.
Suction line
temperature at the
suction shut-off valve is
greater than 10°F
(-12.2°C)
at the end of the Freeze
cycle
Suction line
temperature at the
suction shut-off valve is
greater than 10°F
(-12.2°C)
at the end of the Freeze
cycle
Suction line
temperature at the
suction shut-off valve is
less than 10°F
(-12.2°C)
at the end of the Freeze
cycle
Suction line
temperature at the
suction shut-off valve is
greater than 10°F
(-12.2°C)
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
Refrigerant
Overcharge
-or-
TXV flooding
Compressor
Twin Expansion Valve – S1470C/S1870C/S2070C/S2170C
Operational Analysis 1 2 3 4