Dräger Perseus A500 Instructions For Use Manual page 129

Checking the emergency O
electronically controlled gas mixer)
Prerequisite: Y-piece is sealed.
A
1 Set O switch (A) to the Add. O
2
2 Open the flow control valve (B) of the O
flowmeter and set the desired O
The breathing bag fills and the inflow of gas is
audible.
Instructions for use Perseus A500 SW 2.0n
delivery (with
2
B
position.
2
2
flow.
2
D
3 Close the flow control valve (C).
4 Reset O switch (D) to the Aux. O
2
Checking the flow control valves (mechanically
controlled gas mixer)
1 Open the flow control valve for O
flow of approximately 2 L/min.
– The breathing bag inflates.
– The inflow of gas is audible.
– The total flow tube shows the total fresh-
gas flow.
2 Repeat the settings for the Air and N
control valves.
3 Close all the flow control valves.
Tests
C
position.
2
and set a
2
O flow
2
129