Air Dryer Electrical Repair & Compressor Replacement

Air Dryer Electrical Repairs and Refrigerant Compressor Replacement by Meera Marine

Meera Marine successfully executed the electrical repair and compressor replacement job on a shipboard air dryer unit, ensuring reliable operation of the compressed air system essential for automation, control, and pneumatic equipment. The job was performed in compliance with marine electrical and refrigeration safety standards.

• Job Assessment and Diagnosis
  The air dryer unit was inspected following reports of malfunction and low cooling efficiency.
  Electrical checks revealed faults in control wiring, temperature sensors, and contactor circuits.
  The refrigerant compressor was found to be non-functional due to internal mechanical failure and loss of gas pressure.
• Electrical Repair Work
  Faulty electrical components including relays, wiring terminals, and overload protection devices were replaced.
  Control panel wiring was re-terminated and insulated as per marine electrical codes.
  Power supply circuits were tested for continuity, voltage balance, and proper grounding.
  The system was rechecked for safe start up and shutdown sequencing.
• Refrigerant Compressor Replacement
  The failed compressor was carefully disconnected and removed, ensuring proper recovery of refrigerant to prevent environmental discharge.
  A new marine-compatible hermetic/semi-hermetic compressor was installed, matched to system specifications (cooling capacity, voltage, and refrigerant type).
  Refrigerant lines were brazed, pressure-tested, and vacuumed.
  The system was charged with the correct type and quantity of refrigerant (R134a).
• Testing and Commissioning
  The air dryer unit was run under normal and load conditions to monitor cooling performance, dryer cycle operation, and compressor function.
  Electrical readings (amperage, voltage, thermostat response) and pressure gauges were monitored for stability.
  Final adjustments were made to the expansion valve and thermostat for optimal dew point control.
• Documentation and Handover
  A detailed job report was prepared, including test logs, replaced components, refrigerant charge details, and safety compliance checks.
  The system was handed over to the vessel's crew with operational guidance and preventive maintenance recommendations.
  Through this job, Meera Marine ensured full restoration of the air dryer system's efficiency and reliability, helping maintain dry, clean air for vital shipboard operations.