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•
Close the shut-off valve (clockwise). Do not use excessive torque (max. closing torque is 5
Nm).
EN
Reset flow control head to ZERO position and ensure flow control head engages correctly.
•
•
For combination valve fitted with pressure outlet, ensure it is in working condition by
connecting and disconnecting quick-coupler probe.
6.1.2. USE OF COMBINATION VALVE
6.1.2.1. Use of combination valve flow outlet and setting of flow:
•
Ensure the flow control head is in position "0".
•
Connect accessories to the flow outlet.
Slowly open shut-off valve handwheel (anticlockwise) until fully open - after approx. 1 turn (see
•
indication in picture chapter 5).
•
Set flow head to required flow position. Ensure flow control head engages correctly.
Before connecting any accessory to the flow outlet make sure that the patient is not connected.
Sudden opening could result in a danger of fire or explosion arising from oxygen pressure
shocks. Insufficient opening of the shut-off valve could reduce actual flow delivered.
Always ensure that the flow control head has been correctly set and not placed between two
settings. Flow control head placed between settings will not deliver correct flow of medical
gas.
Common variants of flow control head can have an "end stop" in between the maximum flow
position and the zero position. Do not try to apply excessive force on the flow control head
when it stops in the maximum flow position (during clockwise rotation) or in zero position
(anti-clockwise rotation).
Medical gas flow rate must be prescribed by a doctor.
6.1.2.2. Use of combination valve pressure outlet
•
Ensure the flow control head is in position "0" (if included).
•
Slowly open shut-off valve handwheel (anticlockwise) until fully open - after approx. 1 turn (see
indication in picture chapter 5).
•
Connect accessory to the pressure outlet if not already connected.
Before connecting any accessory to the pressure outlet make sure that the patient is not
connected and the accessory outlet is secured.
If pressure outlet is to be connected to a medical device that requires high gas flow (for
instance pulmonary ventilator that requires gas flow 100 l/min at the minimum pressure
2.8 bar), compare the required flow of connecting medical device with pressure and flow
characteristics of the combination valve stated in appendix Nr. 1. To assure sufficient
performance (pressure and flow characteristics of the combination valve ) the medical device
should not be used if pressure indicator enters the red zone.
Sudden opening could result in a danger of fire or explosion arising from oxygen pressure
shocks. Insufficient opening of the shut-off valve could reduce actual flow delivered.
If a pressure outlet as well as a flow outlet are part of the combination valve do not use them
simultaneously, especially if pressure in the cylinder is below 50 bar, in could adversely affect
the outlet parameters of the combination valve.
6.1.3. AFTER USE
•
Close shut-off valve (clockwise). Do not use excessive torque(max. closing torque is 5 Nm).
Vent pressure from the connected devices.
•
•
Disconnect all connected devices from user outlets.
•
Set flow control head on "0" (if included).
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