AirSep AS-Q, Instruction Manual

Page: 48 / 198

48 AS-Q—AS-Z Series Instruction Manual
AirSep Corporation
2. Make sure that manual valves on either side of the filter assembly are
closed.
3. Press the manual override button on the automatic drains of the filters
to depressurize the filter assembly.
4. Disconnect, tag, and lockout electrical power to the drain valve.
5. Remove the timer and conduit from the drain valve on the bottom of
the filter bowl. The timer attaches to the valve body with one screw.
6. Slowly loosen, but do not remove, all eight socket head cap screws
that hold the bowl to the filter body to make sure the bowl fully
depressurizes before removal.
7. Remove the eight socket head cap screws that hold the bowl to the
filter body to disconnect the bowl.
An empty filter bowl indicates proper drain system operation.
The old coalescing filter element(s) cannot be cleaned. You must
replace it (them) with (a) new element(s).
8. To remove the coalescing filter element(s), disconnect the retainer nut
from under the element(s).
9. Place the new element(s) where the old one(s) was (were) located,
and reconnect the retainer nut.
10. Wash the bowl in warm, soapy water, and rinse.
11. Reconnect the filter bowl.
12. Reconnect the timer and conduit assembly to the drain valve body.
13. Remove the lockout and tag, and provide electrical power to the
oxygen generator.
14. Make sure the MANUAL FEED #2 valve (V-2) remains fully closed.
15. Fully open the MANUAL FEED #1 valve (V-1) to pressurize the
particulate filter.
16. Apply soapy water to check for leaks on all fittings loosened during the
replacement procedure.
17. Press the manual override button on the automatic drain valve on the
coalescing filter and make sure the exhaust contains no liquid.