WarningRefrigeration
CO2 MT / LT Booster Compressor Fault
On a booster rack the LT compressors discharge into the MT suction; a staging or capacity problem on either stage upsets both temperature levels.
Symptoms
- LT suction (low-temp) can't pull down / frozen cases warm
- MT suction disturbed when LT stages change
- Compressor tripping on discharge temperature or pressure ratio
- Poor pull-down on one temperature level
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