Part Number 80-1479-3 7/10 103
Freeze Cycle
Discharge Pressure
_____ ______ _____
1 minute Middle End
If discharge pressure is High or Low refer to freeze cycle high or low discharge pressure problem checklist
page 112 and eliminate problems and/or components not listed on this table before proceeding.
Freeze Cycle
Suction Pressure
_____ ______ _____
1 minute Middle End
If suction pressure is High or Low refer to freeze cycle high or low suction pressure problem checklist
page 115 and eliminate problems and/or components not listed on this table before proceeding.
Suction pressure is
High
Suction pressure
is
Normal or Low
Suction pressure
is
Normal or High
Suction pressure is
High
Suction pressure is
High
Evaporator Outlet
Temperature Comparison
Attach and insulate temperature
probes between evaporator outlet
and 90° elbow
Evaporator outlet
temperatures are
within 10°F of
each other
Evaporator outlet
temperatures are
NOT within
10°F of each
other
or
Within 10°F of
each other and
above 32°F
Evaporator outlet
temperatures are
NOT within
10°F of each
other
Evaporator outlet
temperatures are
within 10°F of
each other
Evaporator outlet
temperatures are
within 10°F of
each other
S MODELS FOUR EXPANSION VALVES
Operational Analysis 1 2 3 4 5