Manitowoc QY0874C

–154–
Cool Vapor Valve
Audible
refrigerant flow
through valve in
Freeze cycle
No audible
refrigerant flow
through valve in
Freeze cycle
No audible
refrigerant flow
through valve in
Freeze cycle
No audible
refrigerant flow
through 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.
Cool vapor valve
leaking
Low on charge
-or-
TXV starving
Refrigerant
Overcharge
-or-
TXV flooding
Compressor
Single Expansion Valve – Q0600C/0800C/Q1000C/SU1000C (Continued)
Operational Analysis 1 2 3 4