9.2.2 Storage
Internal battery
If the device is to be operational at all times, we recommend leaving the device connected
to the power supply even if it is not used for prolonged periods. This ensures that the
battery is always fully charged.
Replaceable battery (if present)
If storing the battery for more than a week, store it separately from the device.
Note the information below for storage:
• Always store the replaceable battery at room temperature
• Check the charge status of the replaceable battery every 2 months (see “5.3.4
Operation with replaceable battery” on page 54).
• Wait until just one segment is showing in the status line before charging the
battery.
• Replaceable batteries which have been stored for over a month must be charged
up before they are used to guarantee an accurate display.
9.3 Change filter
9.3.1 Change coarse dust filter
Use original filters from Weinmann only. Using third-party filters invalidates any claim
under warranty and may result in restricted function and bioincompatibility.
1. Press on the latch of the filter compartment lid and
take it off.
2. Take the coarse dust filter out of the filter
compartment
lid and dispose of it in normal domestic waste.
3. Place the clean coarse dust filter in the filter
compartment lid.
4. Put the filter compartment lid into the cutout in the
housing bottom edge first. Then push the filter
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