NVIC 17-14 Task 7.2.B

Maintenance and repair of electrical and electronic equipment

OICEW-B2 Safety requirements for working on shipboard electrical systems

Maintenance and repair of electrical system equipment, switchboards, electric motors, generator and DC electrical systems and equipment

Detection of electric malfunction, location of faults and measures to prevent damage

Construction and operation of electrical testing and measuring equipment

Function and performance tests of equipment and their configuration:

Interpretation of electrical and simple electronic diagrams

On a vessel of at least 1,000 HP, or in a laboratory or workshop,

the candidate repairs a malfunctioning motor controller.

The candidate:

1. If blown fuses are replaced, the replacement fuses should be of the correct type and be properly rated, and fuse holders should grip tightly the fuses;

2. If contacts are to be refurbished, techniques should be in accordance with instruction manuals;

3. If controller parts are to be replaced, only manufacturer recommended spares are to be used;

4. When replacing controller components, leads should be marked and connection scheme sketches drawn to insure correct wiring;

5. Lugs and terminals shall be properly tightened;

6. Cleaning of motor controllers should be accomplished in accordance with manufacturer instructions, avoiding the use of compressed air;

7. Lubrication of controller linkages and pivots should be accomplished in accordance with manufacturer instructions; and

8. Prior to placing equipment back into normal service, the controller function shall be thoroughly tested and that all system voltages and current draws are within manufacturer specifications.