Manitowoc Indigo Series Technician's Handbook page 195

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
Freeze Cycle
Suction Pressure
________
________ ________
1 minute Middle End
Twin Expansion Valve – I1470C/I1870C/I2170C Models
1
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 169 & page 169 to eliminate problems and/or components not listed on this table before
Suction pressure is
High
2
Stops on
safety limit:
1 or 2
this table before proceeding.
proceeding.
Suction pressure is Suction pressure is
Low or Normal High or Normal
3
Stops on Stops on
safety limit: safety limit:
1 or 2
Suction pressure is
4
1
High