NVIC 17-14 Task 4.3.U

Operate main and auxiliary machinery and associated control systems

OICEW-A4.3 Preparation, operation, fault detection and necessary measures to prevent damage for the following machinery items and control systems

Other auxiliaries including refrigeration, air- conditioning and ventilation systems

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

the candidate monitors an air- conditioning or refrigeration system.

The candidate:

1. Checks the compressor suction and discharge pressures and temperatures;

2. Checks compressor crankcase oil level;

3. Checks compressor oil pressure and control oil pressure if applicable;

4. Checks condition of crankcase and compressor noise;

5. Checks receiver level and liquid line sight glass condition;

6. Checks liquid line temperature;

7. Checks condition of suction accumulator if applicable;

8. Checks oil separator oil return sight glass condition if applicable;

9. Checks condensing cooling water pressure and inlet and outlet temperatures;

10. For chillers, checks chilled water pump suction and discharge pressures and chiller inlet and outlet temperatures, as well as the chilled water expansion tank level;

11. Checks refrigerated space temperatures as applicable;

12. Checks supply air, return air, and air conditioned space temperatures as applicable; and

13. Checks the compressor drive motor temperature.