Learning Objective (LO) and Assessment Criteria for NOS: PSS/N6003

This NOS focuses on planning, carrying out installation, fault detection,

and repair of domestic appliances, ensuring that learners can address the
key aspects of servicing and repairing a wide range of household electrical
appliances. The tasks involve both installation and troubleshooting, ensuring that
learners are proficient in diagnosing issues, repairing, and testing appliances.
Below is a detailed breakdown of Learning Objectives (LO), Assessment
Criteria, and a step-by-step procedure for each task.

Learning Objectives (LO):

1. Plan Work in Compliance with Standard Safety Norms for
Domestic Appliances (10 Marks)
o Learners will demonstrate the ability to plan and carry out work
related to domestic appliances while adhering to safety norms and
standards.
2. Service and Repair Calling Bell/Buzzer/Alarm (10 Marks)
o Learners will demonstrate the process of servicing and repairing a
calling bell, buzzer, or alarm.
3. Service and Repair an Automatic Iron (10 Marks)
o Learners will service and repair an automatic iron, ensuring it
operates efficiently.
4. Repair and Service Oven with Multi-Range Heat Control (10
Marks)
o Learners will repair and service an oven, addressing multi-range
heat control issues.
5. Replace the Heating Element in a Kettle and Test (10 Marks)
o Learners will demonstrate the process of replacing the heating
element in an electric kettle and testing it for proper functionality.
6. Service and Repair an Induction Heater (10 Marks)
o Learners will repair and service an induction heater, ensuring its
correct operation.
7. Service and Repair a Geyser (10 Marks)
o Learners will repair and service a geyser, ensuring it is functioning
properly and safely.
8. Service and Repair a Mixer (10 Marks)
o Learners will demonstrate the repair and servicing of a mixer,
addressing common faults.
9. Service and Repair a Washing Machine (10 Marks)
 o Learners will perform servicing and repair tasks on a washing
machine, ensuring proper functionality.
10.Install a Pump Set (10 Marks)
o Learners will demonstrate how to install a pump set safely and
efficiently.
11.Service and Repair a Table Fan (10 Marks)
o Learners will repair and service a table fan, ensuring it works
smoothly.
12.Service, Repair, and Install a Ceiling Fan (10 Marks)
o Learners will service, repair, and install a ceiling fan, ensuring
proper operation.

Assessment Criteria (100 Marks):

Mark
Assessment Criteria
s

Plan Work in Compliance with Safety Norms for

10
Domestic Appliances

Service and Repair Calling Bell/Buzzer/Alarm 10

Service and Repair an Automatic Iron 10

Repair and Service Oven with Multi-Range Heat Control 10

Replace the Heating Element in a Kettle and Test 10

Service and Repair an Induction Heater 10

Service and Repair a Geyser 10

Service and Repair a Mixer 10

Service and Repair a Washing Machine 10

Install a Pump Set 10

Service and Repair a Table Fan 10

Service, Repair, and Install a Ceiling Fan 10

Step-by-Step Procedure for Each Task:

1. Plan Work in Compliance with Standard Safety Norms for Domestic
Appliances (10 Marks)
Why NOS: Safety is paramount when working with electrical appliances. This
task ensures learners are aware of safety procedures and can work safely around
electrical devices.
How to Do:
 Review Appliance Specifications: Familiarize yourself with the
appliance's user manual and safety instructions.
 Use Proper Safety Gear: Wear safety gloves, goggles, and other
necessary protective equipment.
 Ensure Proper Grounding: Ensure that all electrical systems are
properly grounded.
 Check for Faulty Wires: Inspect wires and connectors for wear and tear
to prevent accidents.
 Work in Well-Ventilated Areas: Ensure good ventilation to avoid the
accumulation of heat or fumes.
 Shut off Power Supply: Always ensure that the power supply is off
before starting any work.
What to Learn:
 Understanding the safety protocols associated with electrical appliances.
 Knowledge of electrical hazards and their mitigation.
Practical Application:
 Applied in servicing all domestic electrical appliances to ensure safe
operation.
Key Points to Focus:
 Always de-energize electrical appliances before repairing.
 Wear appropriate personal protective equipment (PPE).
 Follow manufacturer guidelines for each appliance.

2. Service and Repair Calling Bell/Buzzer/Alarm (10 Marks)

Why NOS: Calling bells, buzzers, and alarms are critical components in domestic
and commercial settings. Proper servicing ensures they function when needed.
How to Do:
 Test the Appliance: Check if the device is producing sound. If not, check
for issues like faulty wiring, the switch, or the power supply.
 Inspect the Internal Components: Look for burnt-out components like
the coil or contacts.
 Replace Faulty Parts: Replace damaged or faulty parts, such as the
buzzer, switch, or electrical connections.
  Test the Functionality: Test the device after repairs to confirm proper
operation.
What to Learn:
 Common faults in calling bells/buzzers.
 How to disassemble and repair these devices safely.
Practical Application:
 Ensures functional communication systems in residential or commercial
spaces.
Key Points to Focus:
 Understanding internal circuitry of buzzers/alarms.
 Replacing faulty components like switches or contacts.

3. Service and Repair an Automatic Iron (10 Marks)

Why NOS: Automatic irons are common household appliances, and their
efficiency depends on the thermostat and heating element. Repairing them
ensures they continue to operate safely and effectively.
How to Do:
 Check the Heating Element: Use a multimeter to check continuity in
the heating element. If it’s faulty, replace it.
 Inspect the Thermostat: Test the thermostat for proper temperature
control and replace if needed.
 Check Power Supply: Ensure the power cord and plug are in good
condition.
 Reassemble and Test: After repairs, test the iron for heating and
temperature control.
What to Learn:
 Troubleshooting heating elements and thermostats.
 Replacing components in an automatic iron.
Practical Application:
 Repairs automatic irons to extend appliance life and ensure safety.
Key Points to Focus:
 Proper testing of heating elements and thermostats.
 Use of multimeter for continuity testing.

4. Repair and Service Oven with Multi-Range Heat Control (10 Marks)
Why NOS: Ovens with multi-range heat control are often used in kitchens.
Proper servicing ensures optimal heating and safety.
How to Do:
 Test the Heat Control Switch: Check for any faulty connections or
defective switches that control the heating range.
 Inspect the Heating Element: Use a multimeter to check for continuity
in the heating element.
 Replace Faulty Components: Replace faulty parts like the heating
element or heat control switch.
 Test After Repair: Reassemble the oven and test the temperature
settings.
What to Learn:
 How to troubleshoot and repair heat control systems in ovens.
 Techniques for testing and replacing heating elements.
Practical Application:
 Ensures that the oven works efficiently and safely.
Key Points to Focus:
 Correct adjustment and calibration of heat control settings.
 Ensuring the heating element is working properly.

5. Replace the Heating Element in a Kettle and Test (10 Marks)

Why NOS: Electric kettles are commonly used appliances, and a faulty heating
element can prevent them from working efficiently. Replacing it ensures the
kettle operates effectively.
How to Do:
 Turn Off Power Supply: Ensure the kettle is unplugged before starting
the repair.
 Disassemble the Kettle: Open the kettle carefully, ensuring you can
access the heating element.
 Replace the Heating Element: Remove the old element and replace it
with a new one.
 Reassemble and Test: Reassemble the kettle, plug it in, and test it by
filling it with water to check if it heats up properly.
What to Learn:
 Identifying faulty heating elements in kettles.
 Safe disassembly and reassembly of electrical appliances.
Practical Application:
 Ensures the kettle works properly, providing boiling water as needed.
Key Points to Focus:
 Correct handling and installation of heating elements.
 Ensuring no water leakage or faulty connections.

6. Service and Repair an Induction Heater (10 Marks)

Why NOS: Induction heaters are energy-efficient cooking appliances. Repairing
them ensures they continue to provide efficient and safe cooking.
How to Do:
 Check Power Supply: Ensure the heater is getting power by testing the
plug and cord.
 Inspect the Control Board: If there’s no response, the issue may be with
the control board, which should be tested and replaced if faulty.
 Examine the Coil: Check if the induction coil is working. If damaged, it
needs replacement.
 Test the Heater: Once repairs are made, test the heater for functionality.
What to Learn:
 Diagnosing and repairing issues with induction heaters.
 Understanding the importance of the control board and induction coil.
Practical Application:
 Applied in households for cooking and heating purposes.
Key Points to Focus:
 Ensuring power is flowing correctly through the device.
 Proper testing and calibration after repairs.

7. Service and Repair a Geyser (10 Marks)

Why NOS: Geysers are essential for providing hot water in households. Proper
servicing ensures safety and energy efficiency.
How to Do:
 Check the Heating Element: Inspect the heating element for continuity.
Replace if it’s burnt out.
 Inspect the Thermostat: Test the thermostat to ensure the water is
heating to the desired temperature.
  Check Water Flow: Ensure there are no blockages in the inlet or outlet
valves.
 Test After Repair: Test the geyser by switching it on and ensuring it
heats water as expected.
What to Learn:
 Repairing faulty heating elements and thermostats.
 Diagnosing issues with water flow in geysers.
Practical Application:
 Ensures consistent hot water supply in households.
Key Points to Focus:
 Correct calibration of thermostat settings.
 Ensuring no leaks in water flow.

8. Service and Repair a Mixer (10 Marks)

Why NOS: Mixers are commonly used in kitchens for various tasks. Repairing
them ensures they function properly for daily use.
How to Do:
 Check the Motor: If the mixer is not turning on, check the motor for
faults and continuity.
 Inspect the Switch and Speed Controls: Ensure the switches and
speed control settings are functioning.
 Test the Blades: Check the blades for damage and smooth operation.
 Test After Repair: Reassemble the mixer and test it by using the
appropriate settings.
What to Learn:
 Identifying motor or switch issues in mixers.
 Replacing damaged blades.
Practical Application:
 Ensures smooth operation of kitchen appliances for food preparation.
Key Points to Focus:
 Motor and switch functionality.
 Ensuring proper assembly and safe use.

9. Service and Repair a Washing Machine (10 Marks)

Why NOS: Washing machines are crucial for household chores. Regular servicing
ensures they operate efficiently and without issues.
How to Do:
 Check the Power Supply: Ensure the machine is properly connected and
receiving power.
 Inspect the Drum and Motor: Check for blockages or motor faults.
 Examine the Pump: Ensure the pump is working and draining water
efficiently.
 Test the Machine: After repairs, test all cycles to ensure the washing
machine operates correctly.
What to Learn:
 Troubleshooting common washing machine issues (motor, pump, drum).
 Techniques for repairing and replacing faulty parts.
Practical Application:
 Ensures efficient laundry cycles and proper functioning.
Key Points to Focus:
 Proper diagnosis of power and mechanical issues.
 Thorough testing after repairs.

10. Install a Pump Set (10 Marks)

Why NOS: Pump sets are used to supply water for various purposes. Proper
installation ensures efficient water delivery.
How to Do:
 Check Installation Site: Ensure proper space and power supply for the
pump set.
 Install Pump and Pipes: Connect the pump to the water source and
install the necessary pipes.
 Test the Pump: Ensure the pump is operational by running water through
it and checking pressure.
What to Learn:
 Proper installation techniques for pump sets.
 Testing and calibrating the pump for efficient operation.
Practical Application:
 Used in agriculture, domestic, and industrial water systems.
Key Points to Focus:
  Ensuring the pump is installed level and secure.
 Verifying water pressure after installation.

11. Service and Repair a Table Fan (10 Marks)

Why NOS: Table fans are essential for cooling in households. Proper servicing
ensures smooth operation.
How to Do:
 Check the Motor: If the fan isn't spinning, check the motor for continuity.
 Inspect Blades: Ensure the blades are clean and free from damage.
 Test Fan Speed Controls: Ensure the speed settings are working as
expected.
What to Learn:
 Troubleshooting motor and blade issues.
 Cleaning and repairing a table fan.
Practical Application:
 Ensures the fan works efficiently during hot weather.
Key Points to Focus:
 Motor functionality.
 Proper cleaning and blade alignment.

12. Service, Repair, and Install a Ceiling Fan (10 Marks)

Why NOS: Ceiling fans are crucial for airflow and comfort. Proper servicing
ensures they work smoothly and safely.
How to Do:
 Check Motor and Bearings: Ensure the motor is working and bearings
are not worn out.
 Inspect the Fan Blades: Check for any damage or dust buildup.
 Install the Fan: Ensure the fan is securely mounted and wired correctly.
 Test the Fan: Ensure the fan runs smoothly at all speeds.
What to Learn:
 Ceiling fan installation and maintenance.
 Troubleshooting common ceiling fan issues.
Practical Application:
  Provides comfort and air circulation in various indoor environments.
Key Points to Focus:
 Proper fan mounting.
 Testing for smooth operation after repair or installation.

Conclusion:
This comprehensive guide focuses on planning, fault detection, installation,
and repair of various domestic appliances. Learners will gain hands-on
experience in troubleshooting and repairing common household electrical
devices, ensuring that they can maintain and repair appliances for safe and
efficient use. The emphasis on safety, diagnosis, and repair techniques
ensures learners can effectively serve and maintain electrical devices.