Page 271 - CITS - Electrician - Trade Practical

ELECTRICIAN - CITS

TASK 3:

1 Dismantle the geyser.
2 Study the internal structure of the geyser.

Check and ensure that switch is off before removing the power plug.
3 Trace the connections of geyser.
4 Draw the complete connection diagram of the geyser.
5 Draw the sketch of the geyser.

6 Conduct the insulation test on the cord between the leads and lead and earth.
7 Measure the insulation resistance between the element and earth.
8 The minimum value of insulation resistance should be 1.0 MΩ.
9 Connect the geyser to the supply and switch ON the appliances, keeping the inspection/bottom cover of the
connections open.
10 Observe the actuation of the thermostat after heated to a preset value.
11 Switch off the supply and measure the insulation resistance between terminal and body of the heater while it
is hot.
12 Replace the thermostat unit if the insulation value is less than 1 MΩ.
13 Reassemble the geyser and check the working condition.

The geyser should be switched ON only with water in the container.

TASK 4:
1 Draw the connection diagram of the room air cooler.
2 Note down the name plate details of the room air cooler.
3 Put a mark on the outer cover and remove it.
4 Remove the parts one by one and identify them.

Proper tools are to be used for dismantling and assembling.

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CITS : Power - Electrician & Wireman - Exercise 101