–153–
Safety Limits
Refer to “Analyzing
Safety Limits” to
eliminate all non-
refrigeration problems.
Stops on
safety limit:
1 or 2
Stops on
safety limit:
1 or 2
Stops on
safety limit:
1 or 2
Stops on
safety limit:
1
Freeze Cycle
Discharge Pressure
________
________ ________
1 minute Middle End
If discharge pressure is High or Low, refer to Freeze cycle high or low discharge
pressure problem checklist to eliminate problems and/or components not listed on this table
before proceeding.
Freeze Cycle
Suction Pressure
________
________ ________
1 minute Middle End
If suction pressure is High or Low, refer to Freeze cycle high or low suction pressure problem
checklist to eliminate problems and/or components not listed on this table before proceeding.
Suction pressure is
High
Suction pressure is
Low or Normal
Suction pressure is
High or Normal
Suction pressure is
High
Single Expansion Valve – Q0600C/0800C/Q1000C/SU1000C (Continued)
Operational Analysis 1 2 3 4