Turn the gas flow selection dial fully clockwise and check that the indication in the
flowmeter window is zero.
Open the cylinder valve slowly with a suitable cylinder key. Check the regulator cylinder
contents gauge to verify that there is sufficient gas available.
Connect a sufficient length of oxygen tubing (not supplied) to the outlet barb.
4.2.
Test Prior to Use
Turn the flow selection dial to its highest setting and check that gas flow can be felt at the
patient end of the tubing. If no medical oxygen flow is refer to Section 7 Troubleshooting
of this manual.
Turn off the oxygen flow by turning the flow selection dial fully clockwise.
4.3. Operation
Connect the free end of the oxygen tubing to the patient or patient enclosure using the
appropriate connector (not supplied).
Determine the appropriate oxygen flow rate in litres per minute (l/min) require for the
patient. Turn the flow selection dial until the required rate is visible in the flow indication
window; the dial ‘clicks’ into place and is obvious to the touch.
Continue to monitor the patient as advised by the clinician. Check the regulator contents
gauge regularly.
4.4. After
Use
Upon completion of the therapy, turn the flow selection dial to zero, close the cylinder
valve and disconnect the outlet hose from the regulator and the patient.
To remove the regulator from the cylinder, first ensure the cylinder valve is closed. Bleed
off any residual gas pressure in the regulator by turning the flow selection dial to any flow
setting until flow ceases. Remove the regulator from the cylinder.
5.
Maintenance
5.1. Interim
Inspection
All Dialflow Regulators should be inspected and tested on an annual basis to ensure
correct performance.
5.1.1. Cleaning
Wipe down the outside of the device with an alcohol wipe. Do not allow the ingress of
water or other solution into the device. Check the exterior condition of the device. Pay
particular attention to the input connector seals, which should be replaced if damaged or
missing. Check that the holes in the side of the device, which are designed to vent gas in
the event of relief valve activation, are not obstructed or have otherwise been tampered
with.
5.1.2.
Internal Leak Test
Connect the regulator to a cylinder in accordance with this Instructions for Use. Set the
flow selection dial to zero and open the cylinder valve. Connect a hose to the outlet barb
and immerse the other end of the hose into water. Check for leak through (internal leak).
Remove the hose.