Treaton MV200, User Manual

Page: 153 / 222

6.5 Check of the filter-regulator
6-3
6.5 Check of the filter-regulator
Always disconnect the oxygen hose during filter-regulator maintenance.
Check the O-ring of the water trap reservoir of the reducer. The ring should not have visible
damage or undue strain.
Check the O-ring in the cap nut of the filter-regulator for connection to the O
2
port. The ring
should not have visible damage or undue strain. If necessary replace with supplied spare one.
Check the microfilter, in the case of severe contamination replace by supplied spare filter. For
this purpose unscrew the filter housing and then the filter itself from the housing (Figure 6.2). In-
sert the new filter (never try to clean old!) and repeat the steps in reverse order.
Figure 6.2 – Disconnection of filter-regulator housing
6.6 Check of the expiration valve
Detach removable part of the expiration valve, check the condition of the membrane (see Figure
6.3).
Figure 6.3 – Disconnection of expiration valve housing
The membrane should have no visible damage or undue strain. If necessary replace by the
supplied spare membrane.
Check the condition of three silicone sleeves on the device enclosure. If necessary replace the
sleeves ordering them at the manufacturer.