Here is a general list of tasks that a technician may perform during geyser (water heater) maintenance:

1. Inspection & Safety Check

• Verify that the geyser is operating safely.
• Check for any leaks, corrosion, or wear on the unit.
• Ensure the unit is properly grounded to prevent electrical hazards.
• Inspect the thermostat and temperature settings.

2. Draining and Flushing

• Turn off the geyser and disconnect power supply.
• Drain the water from the geyser to remove sediment buildup.
• Flush the tank to clear out any debris, lime scale, or rust accumulation, especially if the water is hard.
• Check the condition of the drain valve for any leaks or issues.

3. Checking Heating Elements

• Inspect the heating elements (for electric geysers) for any signs of damage or wear.
• Test the heating elements for functionality with a multimeter.
• Replace any faulty heating elements.

4. Thermostat & Temperature Adjustment

• Test the thermostat for proper functioning.
• Adjust the thermostat to the correct temperature setting (usually 50-60°C for efficiency and safety).
• Check the temperature and pressure relief valve to ensure it’s not clogged or malfunctioning.

5. Anode Rod Inspection

• Inspect the sacrificial anode rod, which prevents rust and corrosion inside the geyser tank.
• Replace the anode rod if it is heavily corroded (every 1-2 years, depending on water quality).

6. Checking the Pressure Relief Valve

• Inspect the temperature and pressure relief valve (TPR valve) to ensure it’s functioning properly.
• Test the valve by lifting the lever and checking for water flow.
• Replace if the valve is malfunctioning.

7. Cleaning & Descaling

• Clean the tank interior and remove any lime scale buildup.
• Use descaling agents if necessary to prevent mineral buildup, especially in hard water areas.
• Wipe down the exterior and ensure the geyser is free from dirt or dust.

8. Checking Electrical Components (For Electric Geysers)

• Inspect the electrical wiring for signs of wear or damage.
• Test the electrical connections and ensure they are tight and secure.
• Check the circuit breaker for proper functioning.

9. Reassemble and Test

• After all necessary repairs and checks, reassemble the geyser.
• Turn on the power and water supply.
• Test the geyser to ensure it heats water effectively and maintains the correct temperature.

10. Final Check and Customer Guidance

• Conduct a final inspection of the entire system for any leaks or issues.
• Provide the customer with tips on how to maintain their geyser, such as water temperature settings and cleaning frequency.
• Provide the customer with a report detailing any maintenance done and any parts replaced.

This is a general outline of the tasks involved, though the specifics may vary based on the type, model, and age of the geyser.