HEPA filter replacement – ensuring optimum suction power and safety
The HEPA filter should be replaced if the filter has reached 390 operating hours. After 390 operating hours, the suction power of the drill will gradually decrease. The drill will issue a message (replacement message 1) after just 370 operating hours. This gives you adequate experience to plan the replacement.
After 390 operating hours, the drill will display another message (replacement indicator 2). Replace the filter after 400 operating hours at the latest.
Note
Only use original HEPA filters. Only use each HEPA filter once. Wear a suitable respirator mask when changing the HEPA filter. This will minimise the risk of infection from grinding dust that may contain pathogens.
Changing the HEPA filter while the drill is switched on
You can change the HEPA filter while the drill is switched on. However, the handpiece motor must be switched off. If the drill is switched on, the display will show messages during the process. Follow the information on the display. Once you have performed and confirmed the change, the operating hours counter for the HEPA filter will be reset to 0 (zero).
Changing the HEPA filter when the drill is switched off or the display is inactive
If you have changed the HEPA filter when the drill is switched off or the display is inactive, the drill has not registered the change. If more than 400 operating hours have passed since the last confirmed change, the message ‘The HEPA filter is full’ appears when the drill is switched on again or when the display is activated. You can then reset the counter by answering ‘Yes’ to the question about whether a filter change has been carried out.
