Heyer iTernIS ADV, Operator'S Manual

Page: 34 / 218

Assembly and installation | iTernIS ADV
3. 10
• Once the set has been introduced, make a quarter turn in the counterclockwise
direction. The set should be in the position shown in Fig. 3-8, that is, with the ex-
haled gases outlet facing towards the left (horizontal outlet).
• Place the silicon hoses into the cylindrical connectors in the pneumotachograph
(in Fig. 3-8 they are identified as ‘To P1’ and ‘To P2”). The free ends of the hoses
should be connected to P1 and P2 at the base of the ventilator, such that the
upper connector links to P2 and the lower connector to P1.
• Once placed, the lower end of the set (22 mm male connector) can receive the
free end of the last segment of the expiratory segment.
WARNING
• The pneumotachograph incorporated into
the expiratory set has a delicate transparent
membrane inside it. This must not be dama -
ged in order for the expiratory flow and vo -
lume measurements to be correct.
• When replacing, always use original dia -
phragms. Similar non-original diaphragms
may cause malfunctioning of the valve with
blockage of the expiratory airway.
PRECAUTION
• Incorrect connection of the silicon hoses to P1
and P2 produce incorrect flow and volume rea -
dings. It is important to correctly connect the
pneumotachograph hoses.
Fig. 3-8 Drawings of the expiratory set Left, front view of
the set. Right, same view, but of a cross-section of the front
of the set. (A) position of the diaphragm, and (B) position of
the internal membrane.