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•
Check if pressure is indicated on the content indicator of E-Indicator Display. If content
indicator of E-Indicator Display enters red zone, return the medical package (cylinder with
valve) for its refilling.
Leak-tight and functional test before use:
•
Open slowly the combination shut-off valve by turning slowly the combination control knob
"shut-off valve & flow selector" in anticlockwise direction to ON position.
•
By listening check for a leakage (the leakage would be heard as characteristic hiss of flowing
gas).
•
Check that there is a gas flow at each "flow selector" set position in both anticlockwise and
clockwise turning direction (for instance by sound or checking presence of bubbles in a
humidifier)..
•
Turn off at the shut-off valve by turning the combination control knob "shut-off valve & flow
selector" in a clockwise direction to OFF position. Do not use excessive force (Maximum
recommended closing torque is 3 Nm).
•
For combination valves fitted with pressure outlet, ensure it is in working condition by
connecting and disconnecting quick-coupler probe.
If any leakage is detected, apply the procedure described in Chapter 7.2.3. and return the
valve for service.
Sudden opening could result in a danger of fi re or explosion arising from oxygen pressure
shocks.
7.2.2. USE OF COMBINATION VALVE
7.2.2.1. Use of combination valve flow outlet and setting of flow
•
Ensure that the accessory is connected to the flow outlet.
•
Open slowly the combination control knob "shut-off valve & flow selector" in anticlockwise
direction to ON position.
•
Set the combination control knob "shut-off valve & flow selector" on one required flow rate.
Before connecting any accessory to the flow outlet make sure that the patient is not con-
nected.
Sudden opening could result in a danger of fire or explosion arising from oxygen pressure
shocks.
Always ensure that the combination control knob "shut-off valve & flow selector" has been
engaged and not placed between two settings otherwise the flow control head will not deliver
correct flow of medical gas.
On flow control head, each valve is provided with so-called "end stop" located downstream
the maximum flow position. Do not try to apply excessive force on the combination control
knob "shut-off valve & flow selector" when it stops on the maximum flow position during an-
ticlockwise rotation.
Medical gas flow rate must be prescribed by a doctor.
7.2.2.2. Use of combination valve pressure outlet
•
Ensure that the accessory IS NOT connected to the pressure outlet.
•
Open slowly the combination shut-off valve by turning slowly the combination control knob
"shut-off valve & flow selector" in anticlockwise direction to ON position.
•
Connect the accessory to the pressure outlet.
Before connecting any accessory to the pressure outlet make sure that the patient is not con-
nected and the accessory outlet is secured.
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