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However, if the base filter F7 is cleaned and/or replaced on a correctly scheduled basis,
the E11 (H11) HEPA filter may be replaced once every two years (depending on the
operating conditions).
The AK and AK-XXL adsorption catalytic filters must be replaced at least once a
year, depending on the operating conditions.
It is possible to manually adjust the schedule of filter replacement, programming
the countdown timer to indicate the scheduled date (section 5.3.13): for example, a 30-
day alert can be configured as a reminder to perform regular F7 filter cleaning.
7.1 Filter replacement
The filters should be replaced after their natural lifetime expires, or if the E11 (H11)
HEPA filter is optionally replaced with an adsorption catalytic AK-XXL filter. To replace
filters, do the following (Fig. 18):
1. Turn off the device using the switch button on the side panel and pull out the
power cord from the socket.
2. Remove maintenance panel:
• Press on the left and right latches towards each other, releasing the panel bot-
tom corners;
• Pull the panel, overcoming the force of the magnet lock located at the bottom
of the maintenance panel.
3. Pull out the old filter and insert the new filter until it stops in position.
4. Reinstall the maintenance panel. Make sure the right and the left locks are
clamped shut.
5. Please note! Avoid applying force on the latches during panel reinstallation, as
this may damage the device.
6. Put the used filter into a bag and dispose of it.
No special measures for filter disposal are needed.
7.2 Troubleshooting
The LCD display will warn of any malfunctioning or contingency.
Should an abnormal situation occur:
• the device will automatically switch to standby mode;
• The LCD display will appear as shown in Figure 19 (error «ЕС05», blinking seg-
ments are circled).
Error in-
dication
Error
code
Figure 19 Example of error indication