How to fix a Mechanical seal Fault on an Argonaut pump?

Here's a specific guide to fixing a mechanical seal fault on an Argonaut pump:

1. Disconnect Power: Ensure the pump is switched off and disconnected from power.

2. Remove the Four Bolts: Undo the four bolts connecting the pump body.

3. Separate the Pump: Split the pump, and the grey diffuser will come apart with it. Put the diffuser to one side.

4. Lock the Rotation: Use a flat screwdriver to lock the rotation from the fan on the motor.

5. Remove the Impeller: Turn the impeller counterclockwise to remove it.

6. Replace the Seal: The seal can now be removed from the impeller and seal plate. Replace it with a new one. Note: Touching the faces of the seals can ruin them, so clean hands or gloves are recommended.

7. Reassemble with Proper Alignment: When putting everything back together, make sure the two notches on the diffuser are at the 6 o'clock position so that the blue locator fits in-between.

8. Test the Pump: Reconnect the power and run the pump to ensure that the seal fault has been corrected. Check for any leaks or abnormal sounds.

9. Refer to the Manual: Always refer to your specific pump’s manual for any additional information or specific requirements for your model.

Remember, working with pumps and seals can be complex, and if you're unsure at any stage, it might be wise to consult with a professional technician.