WarningCO₂ Transcritical
CO2 Startup / Charging / Pull-Down Fault
Bringing a CO2 rack online (after service, power loss, or commissioning) has strict pressure rules. Doing it out of order risks dry-ice blockage, relief loss, or nuisance trips.
Symptoms
- Trouble getting the rack to stage up after a shutdown or service
- Pressure near the triple point during pull-down; blockages forming
- Relief lifting during an uncontrolled warm-up/charge
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