Models With “E” Cylinder Yoke (Simple
Operation Procedure)
1. Open one each O
2
and N
2
O Cylinder Valves
with wrench provided.
2. Observe cylinder pressures. Replace cylinder
when less than 300 psi (20 bar), at room
temperature (21.1 ºC, 70ºF). During
replacement, close all Cylinder Valves.
3. Observe line pressures (Figs. 23.1, 23.2).
Normal is 50-55 psi [3.4–3.8 bar] (green band)
for static no-flow condition. Pressure will
decrease slightly during each inspiration (see
“Maintenance”).
4. Observe mixture pressure (Fig. 23.3). Normal is
30-35 psi [2.0–2.4 bar] (green band) for static
no-flow condition. Pressure will decrease
slightly during each inspiration (see
“Maintenance”).
5. If all pressures are normal, Nitronox is ready to
use. Remove Demand Valve with Mask from
storage bracket. Instruct patient to hold Mask
lightly on face covering nose and mouth.
Instruct to breathe normally, preferably through
nose.
Encourage patient to self administer at all
times [see Warnings page 3 for details].
6. After use, turn off Cylinder Valves; store
Demand Valve with Hose. Dispose of single
use mask (not supplied sterile).
Models Using Pipeline or External Gas
Supply
(Mobile Stand or Wall Mt.)
1.
Connect external gas supply hoses to DISS
(Diameter Indexed Safety System) fittings.
External pressure must be 40-65 psi (2.8–4.5
bar), preferably 50-55 psi (3.4–3.8 bar).
Observe external pressures on apparatus LINE
PRESSURE GAUGES.
WARNING: DO NOT
use Nitronox if O2 input exceeds N2O input
by 15 psi (1 bar) or higher.
2. Observe mixture pressure as in step 4 above.
3. Follow step 5 procedure above.
4. After use, disconnect external gas supply.
17
Fig. 23.1
Fig. 23.2
Fig. 23.3
