32 Hygienic preparation
6. Remove sealing ring from groove in secretion
cover.
7. Remove the filter cover.
8. Remove the filter.
9. Remove the tube holder plate by sliding it to the
left to disengage it and then pulling it towards
you.
Disposable collection canister
1. Remove the disposable collection bag (see
“Replacing the disposable collection bag” on
page 25).
2. Remove the vacuum tube.