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CUT-OFF (alarm activated in case of leak of
O2 pressure or low O2 pressure.
•
Enable and open the N 2 O regulator (4.7) at
around 2 l/min on flowmeter (4.d).
•
Close the O 2 supply from distribution
system.
•
The O 2 pressure on manometer (4.10)
must fall to zero and after a few seconds
iN 2 O must automatically close and the
pressione on the relevant manometer must
fall (4.9).
•
The acoustic and visual alarm of flowmeter
box must sound.
Against the simultaneous delivery of Air and
N 2 O.
•
Open the N 2 O regulator (4.7); verify that
gas is passing through and close it.
•
Push the key (4.4) to enable the Air gas
•
Open the Air regulator (4.7); verify that gas
is passing and close it.
6-44
Restore the O 2 supply from distribution system and close the N 2 O
regulator on flowmeter box.
User's Manual, version DU3300105
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