R-Pro › Field cases › Refrigeration systems
No Cooling Due to Refrigerant Leak
Likely causes
Crack or corrosion at flare joints or brazed connections
Check: Use electronic leak detector to locate leak
What to do: Use electronic leak detector to locate leak → Apply soap solution or fluorescent dye to confirm → Recover all refrigerant → Re-braze or re-flare the leak point → Nitrogen pressure test (1.5× design pressure, 30+ min) → Evacuate (≤500 μm Hg) and recharge by weight
Service valve core leak
Check: Apply soap solution or fluorescent dye to confirm
What to do: Apply soap solution or fluorescent dye to confirm → Recover all refrigerant → Re-braze or re-flare the leak point → Nitrogen pressure test (1.5× design pressure, 30+ min) → Evacuate (≤500 μm Hg) and recharge by weight
Compressor shaft seal or discharge valve leak
Check: Recover all refrigerant
What to do: Recover all refrigerant → Re-braze or re-flare the leak point → Nitrogen pressure test (1.5× design pressure, 30+ min) → Evacuate (≤500 μm Hg) and recharge by weight
Refrigerant has leaked, causing low cycle pressures. Repair the leak, then recharge. Never vent refrigerant to atmosphere. Illegal and environmentally harmful. Always use recovery equipment.
All 565 cases work offline in R-Pro, with error codes for 62 brands and P-T data for 108 refrigerants.
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