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Beschikbare talen
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F, G – FLOW CONTROL HEAD "F" AND FLOW OUTLET "G" (OPTION)
Combination valve can be delivered with a flow control head "F".This function is used to supply
adjustable gas flow rates (l/min) at atmospheric pressure directly to a patient through the flow
outlet "G", for instance through a cannula or a facemask. The flow outlet "G" is equipped with
hose fitting (hose nipple) or a threaded type (for accessories to be connected via threaded
connection).
Movement of the flow outlet 'G' is normal due to the method of fixing in the main body. It doesn't
indicate a faulty flow outlet.
H – PRESSURE OUTLET OR QUICK COUPLER (OPTION)
The combination valve may be fitted with a pressure outlet. The pressure outlet is supplied with
gas direct from the low-pressure part of the combination valve and it is fitted with a gas specific
medical quick coupling connector also called "quick coupler". The user can connect another
piece of equipment to this outlet with a gas specific male probe (see appendix nr. 2). The quick
coupler self seals when the male probe is disconnected. This outlet is for supplying gas at a
controlled pressure to power medical devices, for instance medical ventilator.
I - PRESSURE RELIEVE VALVE OF LOW PRESSURE PART
Pressure relieve valve secures the low pressure part of combination valve and connected
medical devices against over-pressure. If the gas pressure is decreased enough after the
pressure relieve valve activation, it will closes itself.
J - EXCESS FLOW DEVICE OR DIP TUBE (OPTION)
Excess flow device ensures safe ventilation of gas from gas cylinder in case the combination
valve is broken above inlet stem (e.g. cylinder fall). Dip tube does not have such function. Excess
flow device and dip tube are to avoid contamination from cylinder entering the combination
valve.
PRESSURE RELIEVE DEVICE OF HIGH PRESSURE PART - BURSTING DISC (OPTIONAL)
The high pressure relieve device is intended to protect the cylinder and high pressure part
of combination valve against damage caused by increased cylinder pressure. If the pressure
relieve device has been activated, it will not reseal and the combination valve must be taken
out of service for repair (see Chapter 9).
Note: Colour of the product (especially guard, flow control head and shut-off valve) does not
have to match the gas colour coding.
6. USE OF PRODUCT
6.1. OPERATIONS PERFORMED BY USER
6.1.1. BEFORE USE
VISUAL INSPECTION BEFORE USE:
•
Check the combination valve for damage (incl. label and marking). If it shows signs of external
damages, remove the product from service and suitably identify its status.
Check the combination valve for contamination. If needed apply the cleaning procedure
•
according to chapter 8.
Check that the cylinder gas pressure indicator indicates sufficient pressure. If it indicates in
•
the red zone, return the cylinder with combination valve back for filling.
LEAK-TIGHT AND FUNCTIONAL TEST BEFORE USE:
Set flow control head (if any) on ZERO position - ensure the flow control head engages
•
correctly.
•
Slowly open shut-off valve handwheel (anticlockwise) until fully open - after approx. 1 turn (see
indication in picture chapter 5).
•
By listening check for leakage (leakage would be heard as characteristic hiss of flowing gas).
•
Check that there is a gas flow at each flow control head set position in both clockwise and
anticlockwise turning direction (for instance by sound or checking presence of bubbles in a
humidifier).
7/239
EN
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