Dräger Fabius 4116029 - Page 261

4-27
22.2 N2O supply, cylinder
Open N2O cylinder
(O2 cylinder is open)
Set * = 0.8 L/min. at O2 flowmeter
Open all other control valves
N2O flowmeter indicates *
≈ 1.6...2.6 L/
min.
Close N2O cylinder
N2O flowmeter:
Flow drops back to * = 0 L/min.
O2 flowmeter:
Flow remains on * = 0.8 L/min.
Close O2 and N2O cylinder.
Depressurise system
Close control valves
23. Testing type of gas, CS operation
All gas supplies depressurised
All pressure gauges for CS depressurised
23.1 O2-CS
Establish O2-CS supply
Pressure gauge for O2 indicates CS
pressure
Actuate O2 bypass valve.
Gas flows
Set O2 flowmeter to * = 0.8 L/min.
Fully open N2O control valve.
N2O float at rest.
23.2 N2O-CS
Establish N2O supply
Pressure gauge for N2O indicates CS
pressure
Set O2 flowmeter to * = 0.8 L/min.
N2O flowmeter indicates * = 1.6...2.6 L/
min.’
Uncouple N2O-CS connector
N2O flowmeter:
Flow drops to * = 0 L/min.
O2 flowmeter:
Flow remains on * = 0.8 L/min.
O
O
O
O
O
O
O
O
O
O
O
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