chowiking problem with -80c deep frezzer

[aruncryo2006]

We are using tecumesh 2464 compressor in both stage of -80c unit, But after start the machine two, three days later the equipment temperature was decreaseing finally it comes -20c also.

so what we have to do?

[aruncryo2006]

how can we face the chowking problem in -80c equipments