Manitowoc QuietQube SD0672C Technician's Handbook page 147

Operational Analysis
Safety Limits
Refer to "Analyzing Safety
Limits" page 125 to eliminate all
non refrigeration problems
Freeze Cycle
Discharge Pressure
________
________ ________
1 minute Middle End
Freeze Cycle
Suction Pressure
________
________ ________
1 minute Middle End
Quad Expansion Valve – S3070C
1
Stops on Safety Limit: Stops on Safety Limit:
2
If discharge pressure is High or Low refer to freeze cycle high or low discharge pressure problem
checklist page 157 & page 158 to eliminate problems and/or components not listed on this table before
If suction pressure is High or Low refer to freeze cycle high or low suction pressure problem checklist
page 160 & page 161 to eliminate problems and/or components not listed on this table before
Suction pressure is Suction pressure is
Normal or High
2
Stops on Safety Limit:
1 or 2
proceeding.
proceeding.
Suction pressure is
Low or Normal Normal or High
3 4
Stops on Safety Limit:
2 1
Suction pressure is
High