how do i clean the actual fan blades inside the loop on the tp07? the manual doesn't say

Diagnosis

The Dyson Purifier Cool TP07 utilizes an "Air Multiplier" technology where the actual fan—a high-speed centrifugal impeller—is encased in a sealed plastic housing at the base of the machine. Unlike traditional pedestal fans, there are no exposed blades inside the loop. The loop itself is merely a ramp that directs the air accelerated by the hidden impeller. When you see dust accumulating inside the loop or hear a whistling sound, it is usually a buildup of particulate matter on the interior surface of the ring or a clog in the narrow slit where the air exits. Because the impeller is precision-balanced to rotate at thousands of RPMs, any physical contact or imbalance caused by manual cleaning can lead to permanent vibration, loud rattling, or motor failure. The unit is sonic-welded and snapped together with proprietary clips that are not intended for user removal. If you attempt to force the base open to reach the impeller, you risk snapping the plastic chassis or damaging the delicate sensor wires that lead to the air quality monitor.

How to Fix It

Since you cannot physically touch the internal impeller, you must use a combination of high-pressure air and targeted surface cleaning to maintain airflow efficiency. Follow these steps to deep-clean the air path:

1. Power Down: Completely unplug the TP07 from the wall outlet. Never use compressed air or cleaning tools while the unit is powered, as this can trigger a motor surge or damage the electronic sensors.
2. Loop Surface Cleaning: Use a dry, lint-free microfiber cloth to wipe the entire interior and exterior of the loop. If there is stubborn grime, dampen the cloth slightly with water—ensure it is not dripping—and wipe the interior curve of the loop.
3. Slit Clearance: Use a vacuum cleaner with a soft brush attachment or a can of compressed air to clear the narrow exit slit that runs along the inner circumference of the loop. This is where dust most frequently accumulates, restricting the "multiplier" effect.
4. Filter Reset: Remove the HEPA and Carbon filters from the base. Vacuum the filter housings and the intake grilles. If the filters are saturated, the impeller has to work harder, which can pull more dust into the internal housing.
5. High-Velocity Purge: Plug the unit back in. Set the fan speed to maximum (10) and the mode to "Full" for 30 to 60 minutes in a well-ventilated room. This creates a high-pressure stream that can help dislodge loose particles from the internal impeller housing and expel them through the loop.

If That Didn't Work

• Compressed Air Blast: If the airflow feels significantly reduced, use a can of compressed air (duster). Direct the nozzle into the intake vents at the bottom of the machine in short bursts. This can often knock loose "dust bunnies" that have bypassed the filter and settled on the impeller blades.
• Deep Filter Replacement: If the machine is whistling, it is often not the blades but a degraded filter seal. Replace the HEPA filter (Part No. HP07/TP07 compatible) to ensure the air pressure is balanced. A clogged filter creates a vacuum effect that pulls dust from the internal chassis onto the impeller.
• Professional Service: If the machine is vibrating or making a grinding noise, the impeller may be physically unbalanced due to a foreign object. In this case, the motor assembly must be replaced by a technician, as the housing is not designed for home disassembly.

Heads Up

• Avoid Liquids: Never spray cleaning agents or water directly into the loop or the base. Liquids can seep into the impeller housing and cause the motor to short-circuit or lead to permanent corrosion of the bearings.
• Filter Warning: Never wash the HEPA filters with water. This destroys the electrostatic charge of the fibers, rendering the filter useless and allowing dust to flood the internal fan blades.
• Vacuuming Tip: When vacuuming the intake grilles, use a low-suction setting. High-suction industrial vacuums can occasionally pull the plastic grille slats out of alignment.
• Placement: Keep the TP07 at least 23 inches away from walls and curtains. Restricting the intake forces the impeller to work harder and increases the rate of dust accumulation inside the sealed motor housing.