Depressurizing The Filters - AirSep AS-20 Instruction Manual

®
AirSep Corporation
7.4
1) Make sure the AUTO/MAN switch is set to AUTO and allow the oxygen
generator to stop cycling when the oxygen receiver pressurizes fully.
2) Disconnect the oxygen generator from the power supply.
3) Remove the front cover of the enclosure, if applicable. (See Section 7.3,
Removing the Front Cover of the Enclosure.)
4) Fully close the manual inlet valve and manual filter outlet valve. (See Figure
7-1.)
AS-20—1000 Instruction Manual

Depressurizing the Filters

The oxygen generator filters contain pressurized air. To
perform monthly maintenance or change filter elements safely,
fully depressurize the filter assembly as described in the
procedure in this section. To safely depressurize all oxygen
generator components, refer to the procedure described later in
this chapter. (See Section 7.6, Depressurizing the Oxygen
Generator.)
Particulate filter
(not provided on
AS-20 model)
Bowl Latches
Drain Tubing
Connections
Manual Inlet Valve
Figure 7-1 Interior View
of AS-45 and AS-80 Models
12/02
Coalescing Filter
Feed Air Regulator
Filter Bowls
Manual Filter
Outlet Valve
Exhaust Muffler
Pressure Switch
7-3