Pump-down aborted or incomplete.

A pump-down sequence is aborted or left incomplete before it finishes. As with a pump-down that never reaches setpoint, an aborted sequence risks liquid return and compressor damage and points to a controls or valve fault.

01 Detail

Trigger, action plan, and escalation criteria.

optimization_metric refrigeration high managed tier AI: hybrid

Related metric: refrigeration_rack_pump_down_performance
Trigger: pump-down sequence aborted or left incomplete (request/state and completion evidence confirmed)
Value drivers: Asset lifespan Operational continuity Energy savings
Preconditions: Rack controller exposes the pump-down request/state and its completion; suction pressure and timestamps available; commissioned per rack.
Human role: Primary when a dispatch is required; AI confirms the sequence evidence.
Action plan: (1) Confirm the sequence started and was aborted/left incomplete from the request/state and completion evidence. (2) Distinguish a controls-driven abort from a mechanical inability to complete. (3) Correct a controllable cause remotely where exposed. (4) If mechanical, dispatch the refrigeration vendor with the sequence and suction evidence.
Escalation: (1) Aborted pump-down with compressor behavior indicating liquid return → asset-protection dispatch within SLA. (2) Recurring aborts on the same rack → controls/valve review candidate.
Prevention: (1) Commission the pump-down sequence and its completion criteria per rack so an abort is scored on real evidence. (2) Review racks with recurring aborts for valve/controls faults at the MBR.