Helium O.f.p.d. - If Applicable; Oxygen Supply Pressure Alarm - Dräger Narkomed 2B Service Manual

PMC PROCEDURE (continued)
6.14.6

Helium O.F.P.D. - if applicable

6.14.6.1
6.14.6.2
6.14.6.3
6.14.6.4
6.14.6.5
( ) 6.14.6.6
6.14.6.7
6.14.6.8
6.14.6.9
6.14.7

Oxygen Supply Pressure Alarm

6.14.7.1
6.14.7.2
6.14.7.3
( ) 6.14.7.4
6.14.7.5
6.14.7.6
6.14.7.7
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Set the gas selector switch to ALL GASES.
Open the helium cylinder valve.
Open one (1) oxygen cylinder valve.
Set the helium flow to 4 l/min; set the oxygen flow to 4 l/min.
Close the oxygen cylinder valve.
Does the flow of helium cease when the oxygen pressure is
depleted? ___ (Y)
Close the helium flow control valve.
Set the gas selector switch to O
Close the oxygen flow control valve.
If not already connected, connect a dedicated O
TEE fitting in the O
2
Open and close an oxygen cylinder.
Set the oxygen flow to 2 l/min.
What is the pressure on the dedicated O
SUPPLY PRESSURE" LED turns on? ___ PSI (34 - 40)
Does the O2 SUPPLY LOW message appear in the Caution
display? ___ (Y)
Bleed the remaining O
flow control valve.
Remove the test gauge from the TEE fitting in the O
output line and replace the plug.
6-34
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+ N O.
2 2
regulator output line.
test gauge when the "O2
2
pressure from the system, then close the
2
NM2B
test gauge to the
2
regulator
2
Rev. Y