Manitowoc QuietQube Indigo Series Technician's Handbook page 125

Operational Analysis
Safety Limits
Refer to "Analyzing Safety
Limits" page 113 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 139 & page 140 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 138 & page 143 to eliminate problems and/or components
Suction pressure is
High
Audible refrigerant flow
through harvest 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
harvest valve in Freeze harvest valve in Freeze
cycle
3
Stops on safety limit:
1 or 2
Suction pressure is
No audible No audible
refrigerant flow through
harvest valve in Freeze
cycle
4
1
High
cycle