Manitowoc S300 Technician's Handbook page 100

Operational Analysis
Freeze Cycle
Suction Pressure
_______ ______ _____
1 minute Middle End
Wait 5 minutes into the
freeze cycle.
Compare temperatures of
compressor discharge line
and both harvest valve
inlets.
S MODELS DUAL EXPANSION VALVE
1
If suction pressure is High or Low refer to freeze cycle high or low suction pressure problem checklist
page 115 to eliminate problems and/or components not listed on this table before proceeding.
Suction pressure is High Suction pressure is Low
The harvest valve inlet is The harvest valve inlet
is Cool enough to hold
Hot
-and-
approaches the
temperature of a Hot
compressor discharge
line.
2
Suction pressure is
or Normal
The harvest valve inlet
is Cool enough to hold
hand on
-and-
the compressor
discharge line is Hot. discharge line is Cool
enough to hold hand on.
3
Suction pressure is
High
The harvest valve inlet
is Cool enough to hold
hand on
-and-
the compressor the compressor
discharge line is Hot.
4
High
hand on
-and-