← All case studies
SCI-MHVAC-CASE-003
Corrosion and Leak Assessment
Sunseeker 73 ft | Dometic three-chiller chilled-water system
ASSESSMENT
Saltwater exposure, advanced corrosion, condenser fouling and suspected refrigerant leakage affected several connected systems. The inspection defined what could be serviced in place and what required controlled removal.
The correct next step was containment and confirmation: control the saltwater source, remove the most damaged chiller for inspection, and leak-test the remaining circuits before any recharge or repair-versus-replacement decision.
- 3
- Chiller circuits
- R410A
- Recorded refrigerant
- 9 / 12
- FCU count discrepancy
EQUIPMENT DETAILS
System profile
- Yacht
- Sunseeker 73 ft motor yacht
- Chiller
- Dometic chilled-water system
- Chiller quantity
- 3 circuits
- Reported capacity
- 100,000+ BTU; source does not state total or per unit
- Refrigerant
- R410A recorded for all three chillers
- Fan-coil units
- Header cites 9 FCUs; room schedule describes 12, including one not inspected
INSPECTION SCOPE
What was checked
- 01Visual and operational review of three chiller circuits
- 02Leak evidence, pressure indication and saltwater contamination
- 03Seawater and freshwater pumps, hoses, clamps and leakage points
- 04Accessible fan-coil units, filters, coils, blowers and airflow
FIELD EVIDENCE
What the inspection showed
- Salt deposits and corrosion extended across multiple independent components.
- Marine growth in the condenser circuit reduced heat-transfer capability.
- Two circuits showed very low recorded pressure and required controlled leak testing.
- Air-side fouling and evaporator corrosion independently explained weak airflow and poor cooling.
PUBLISHED REPORT
Read the complete case study
Preview the report below, or open it in a dedicated browser tab for a full-size display with the PDF controls.
Your browser cannot display the embedded report. Open the PDF in a new tab.
NEED A TECHNICAL ASSESSMENT?