Dräger Panorama Nova RA Gebrauchsanweisung Seite 13

Test and maintenance intervals
The following details are recommendations based on the BGR 190
applicable in Germany. Observe your own national guidelines.
Work required on a full face
mask
Check by the wearer
Visually inspect, check correct
function and leak-proofing
Cleaning and disinfection
Replace the exhalation valve disc
Replace the speech diaphragm
1) For airtight packed masks, every 2 years.
2) For airtight packed masks, otherwise every 6 months.
Visually inspect the speech diaphragm
Remove the speech diaphragm (see "Replacing the speech
diaphragm or O-ring" on page 14).
Visually inspect the inhalation valve
The inhalation valve is visible in the connector. Check by blowing
into it that the valve disc moves freely. If necessary, replace the
valve disc.
Visually inspect the exhalation valve
Pull off the exhalation valve cover from the connector and pull out
the valve disc.
The valve disc and seat must be clean and undamaged.
Clean or replace if necessary.
Moisten the valve disc with water and refit.
X
X 1)
X
X 2)
X
X
X
Leak tests
Test equipment and test accessories: Testor (R 53 400)
adapter (R 53 344), exhalation valve plug (R 53 349).
(1) Checking for leak tightness
Moisten the inside of the sealing contour with water and fit the
mask to the test head (see "Fitting the full face mask and checking
its operability" on page 10).
Inflate the test head until the sealing contour fits snugly all round.
Seal the connector with the adapter.
Generate a negative pressure of 10 mbar.
The full face mask is considered leak-proof if the pressure change
after 1 minute is no more than 1 mbar. If not, perform (2).
(2) Test with sealed exhalation valve
Remove the exhalation valve.
Insert the exhalation valve plug and secure with the spring clamp.
Generate a negative pressure of 10 mbar.
If the pressure change is less than 1 mbar after 1 minute, remove
exhalation valve plug, insert a new valve disc and repeat the leak
test. If not, perform (3).
(3) Underwater leak test
Immerse the test head together with the full face mask in the water.
Generate a positive pressure of approx. 10 mbar and rotate the
test head slowly under the water.
Escaping air bubbles indicate the source of any leak(s).
Remove the test head and full face mask from the water.
Seal any leaks found.
Remove the exhalation valve plug and fit the exhalation valve.
Repeat the leak test.
After testing
Remove the adapter.
Remove the full face mask from the test head and dry it if necessary.
Fit the exhalation valve cover. Ensure that it engages.
1) Observe the corresponding operating manual.
1) 1)
, Quaestor ,
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