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There are a few potential causes for why your Numatic George wet/dry vacuum is not spraying and only producing a faint buzzing sound. Here are some troubleshooting steps you can try:
Check the water level: Make sure that the water level in the tank is sufficient and not too low. If the water level is too low, it can cause the spray function to malfunction.
Check the water supply hose: Make sure that the water supply hose is properly connected and not kinked or damaged.
Check the spray nozzle: Make sure that the spray nozzle is not clogged and is able to rotate freely. If the nozzle is clogged, it can prevent the spray function from working properly.
Check the motor: If the motor is not functioning properly, it can cause the spray function to malfunction. To check the motor, you can try running the vacuum without the hose or attachments to see if it is functioning properly. If the motor is not functioning properly, it may need to be repaired or replaced.
If these troubleshooting steps do not resolve the issue, it may be necessary to take the vacuum to a professional for repair.
This can happen if you use the machine without the water check valve - the ball in the netting tube fixed to the removable disk that sits in the main tank when working in wet mode.
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