Describe the checks and maintenance required for a main engine starting system that uses an air motor.(10)
Checks and Maintenance for an Air Motor Starting System
A well-maintained air motor starting system is crucial for reliable engine starting. Here are the essential checks and maintenance tasks:
Air Supply System
- Air compressor: Regular inspection, oil level checks, and filter replacements.
- Air receivers: Pressure checks, internal inspections for corrosion, and drainage of condensate.
- Piping and valves: Check for leaks, blockages, and proper operation.
- Filters and separators: Regular cleaning or replacement of air filters and separators.
Air Motor
- Lubrication: Check and replenish lubricant as per manufacturer’s recommendations.
- Wear inspection: Examine gears, bearings, and seals for signs of wear.
- Air intake filters: Clean or replace air intake filters.
- Mounting and alignment: Check for proper alignment and secure mounting.
Control System
- Solenoid valves: Check for proper operation and sealing.
- Pressure switches: Verify correct pressure settings and operation.
- Safety interlocks: Test functionality to ensure safe operation.
General Maintenance
- Regular inspection: Visual inspection for any signs of damage or wear.
- Cleanliness: Maintain a clean working environment to prevent contamination.
- Operator training: Ensure operators are familiar with the system and its maintenance requirements.
By following these checks and maintenance procedures, you can ensure the reliable operation of the air motor starting system and prevent unexpected failures.
Additional Checks for Marine Engine Air Starting System
Given the marine environment’s unique challenges, additional checks should be performed on a diesel engine’s air starting system:
Corrosion Prevention
- Anodes: Inspect the condition of sacrificial anodes in the air compressor and air receiver to prevent corrosion.
- Moisture removal: Ensure efficient operation of moisture traps and separators to prevent condensation and corrosion.
Environmental Factors
- Saltwater ingress: Check for signs of saltwater intrusion into the air system, as this can lead to corrosion and system damage.
- Humidity: Monitor humidity levels within the air compressor and receiver to prevent condensation.
System Integrity
- Vibration and stress: Check for signs of vibration-induced damage to pipes, fittings, and components.
- Insulation: Verify the integrity of insulation on pipes and components to prevent heat loss and condensation.
Emergency Preparedness
- Spare parts: Ensure availability of spare parts for critical components.
- Emergency procedures: Develop and practice emergency procedures for air system failures.
By incorporating these additional checks, you can help to ensure the reliable and safe operation of the air starting system in a marine environment.