74 EN WM 100 TD
WM 67841c 03/2015
7 Hygienic preparation
7.5.1 Descaling the respiratory air humidifier
Requirement The respiratory air humidifier is removed from the therapy device
(see "4.3.3 Removing the respiratory air humidifier after use",
page 38).
1. To open the respiratory air humidifier, grip the lower recess on
the rear of the housing and press the rear of the housing gently
with your thumb.
2. Remove the top of the humidifier.
3. Remove the humidifier insert.
4. Pour 300 ml of pure household vinegar (5% solution without
additives) into the base of the humidifier.
5. Place the humidifier insert in a bowl with pure household
vinegar (5% solution without additives). The humidifier insert
must be completely covered with vinegar.
6. Allow the vinegar to work for 1 hour.
7. Rinse the base of the humidifier, the element, and the
humidifier insert off with clean water.
8. Dry the base of the humidifier, the element, and the humidifier
insert carefully.
Result The base of the humidifier, the element, and the humidifier insert
are descaled.
7.5.2 Replacing the seal on the element
Requirement • The respiratory air humidifier is removed from the therapy
device and emptied (see "4.3.3 Removing the respiratory air
humidifier after use", page 38).
• The element is cold.