Firesafe 829-0301, Instructions For Use Manual

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3.2.1. Firesafe™ Nozzle
Every Firesafe™ Flowmeter is fitted with a Firesafe™ Nozzle, minimising the known risks of fire
associated with oxygen therapy. The Firesafe™ Nozzle is discernible from a standard tubing
connector as it features a bright orange band. The Firesafe™ Nozzle can limit the impact of an
oxygen fire by automatically arresting the oxygen flow. Acting like a fuse, it automatically isolates
the oxygen supply as a fire tracks back along the tubing towards the oxygen source. Activation of
the Firesafe™ Nozzle during a fire requires is highly reliable at oxygen flows above 1 l/min. The
Firesafe™ Nozzle is not suitable for use as a fire risk control measure outside this range.
3.2.2. Flowsafe™ Valve
The Flowsafe™ Valve is another feature unique to the Firesafe™ Flowmeter that further lowers
the risk of fire associated with oxygen use. In the event of the flow tube being inadvertently
sheared from the flowmeter body, it automatically isolates the oxygen flow, preventing a free flow
of oxygen into the hospital ward. The pipeline pressure is therefore maintained, negating the
need to isolate the ward oxygen supply, upon which other patients may be dependent.
3.2.3. Precision Rotating Float
Unlike conventional ball and glass style flowmeters, the Firesafe™ Flowmeter incorporates a
precision float with a fluted rim, which continuously rotates in the gas stream to provide visual
confirmation that gas is flowing and the device is providing an accurate reading. Historically,
incidents have occurred with conventional designs whereby static charge within the flow tube has
caused the ball to stick to the surface and provide a false reading.
Unlike conventional ball style flowmeters, where there is often doubt as to where a reading should
be taken, the Precision Rotating Float has a red band indicating the position at which the flow
reading should be taken.
3.2.4. Static Control (Triboelectric Charge Dissipation)
The Firesafe™ Flowmeter incorporates two separate static control measures in order to rapidly
dissipate any charge generated during use. These unique measures control the recognised
phenomena of static charge, which is known to cause the ball in conventional flowmeters to stick
to the flow tube inner surface, leading to either an inaccurate reading or indicating a flow exists
when the valve is closed.
3.2.5. Flush Flow Mode
The flowmeter has a Flush Flow Mode. This mode may be used to deliver approximately
25-30 l/min to supply a resuscitation bag.
3.2.6. Inlet Filter
The flowmeter is fitted with a 25 μm filter to ensure that large particles of debris that might be
resident in the gas supply do not contaminate the flowmeter or pass through to the patient.
3.2.7. Gas Specific Connector
The gas specific quick connection probe has characteristics to prevent connections between
different gas services.