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Full Ahead 3 semester tests (ME)

Full Ahead 3 semester tests (ME)

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Choose the steps of fresh water generator starting procedure

Stop sea water pump (also known as ejector pump).

100%

Stop fresh water pump.

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After the machine is completely stopped, close the drain/ un-loader.

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Change the switch to manual position on the switch board

Close the jacket water inlet valves. Generally inlet is closed first and then the outlet valve.

100%

Charging air bottles

Check the engine speed

Switch off the salinometer.

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Check the lube oil in the crankcase sump by means of a dipstick or sight glass

Put drain in open position.

100%

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This type of evaporator uses a multi-stage process which has two components, the seawater heater and the flash drum and uses two stages.

reverse osmosis evaporator

❌

tube fresh water generator

❌

U shape fresh water generator

❌

flash fresh water generator

✅

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Transfers generated freshwater to fresh water tanks

rotary vane pump

fresh water pump

booster pump

ejector pump

Match the item to its purpose

a device normally fitted in between two stages to cool down the air temperature and to increase the volumetric efficiency of compressor

an engine attached to the compressor for making it operational and is connected to the compressor through the flywheel.

a mechanical accessory made up of copper or soft steel with a paper material to absorb oil and wire mesh to avoid any metal or dust particle to go inside.

stops the water supply with more than 10 ppm of salt.

houses the condenser, evaporator and demister

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Moisture in the system may be due to ............

too low temperature setting

❌

worn packing

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defective oil pressure cut out

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this may happen if the oil separator is not working properly.

✅

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The compressor is running hot and the performance of the compressor falls off due to high superheat temperature at the suction side of the compressor. It is caused by

defective valves

❌

the lube oil level is below required level

❌

the expansion valve may be blocked at the strainer

✅

the compressor may take a high capacity current during starting.

❌

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