Preparation to use
User’s Manual, DU3310103-MRI / rev.3 - 02.05.2019
6-41
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 (4.2).
• 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 alarm (whistle) of flowmeter box
must sound.
Restore the O
2
supply from distribution system and close the N
2
O
regulator on flowmeter box.
Against the simultaneous delivery of Air and
N
2
O.
• Enable and open the N
2
O regulator (4.7);
verify that gas is passing through and close
it.
• Enable and open the Air regulator (4.6);
verify that gas is passing and close it.