Manitowoc Indigo Series Technician's Handbook page 192

Operational Analysis
Safety Limits
Refer to "Analyzing Safety
Limits" page 134 to eliminate
all non-refrigeration
problems.
Freeze Cycle
Discharge Pressure
_______ ______ ______
1 minute Middle End
into cycle
Freeze Cycle
Suction Pressure
_______ ______ _____
1 minute Middle End
Harvest Valve
I Model QuietQube® Single Expansion Valve
1
Stops on safety limit: Stops on safety limit:
1 or 2
If discharge pressure is High or Low refer to freeze cycle high or low discharge pressure
problem checklist page 166 & page 166 to eliminate problems and/or components not listed on
If suction pressure is High or Low refer to freeze cycle high or low suction pressure problem
checklist page 166 & page 169 to eliminate problems and/or components
Suction pressure is
High
Audible refrigerant flow
through left or right valve
in Freeze cycle
2
Stops on safety limit:
1 or 2
this table before proceeding.
not listed on this table before proceeding.
Suction pressure is Suction pressure is
Low or Normal Normal or High
No audible
refrigerant flow through refrigerant flow through
left or right valve in left or right valve in
Freeze cycle
3
Stops on safety limit:
1 or 2
Suction pressure is
No audible No audible
refrigerant flow through
left or right valve in
Freeze cycle Freeze cycle
4
1
High