W&H Lisa VA131-17 Instructions For Use Manual page 84

Maintenance
PREPARE THE STERILIZER FOR CLEANING THE WATER TANKS
A video animation is available on https://video.wh.com/en_global/dental-faq.
Proceed as follows:
Switch OFF the sterilizer and disconnect the mains cable.
1
Completely drain both water tanks (see "Draining the used and clean water tank"
2
on page 91).
To drain the detergent solution during the subsequent cleaning, leave the drain
3
tube attached to the drain port of the tank you want to clean.
84 LISA | Instructions for use | VA131 ENG Rev. 05 | 31/07/2018 | © 2018 W&H Sterilization Srl