Heyer iTernIS ADV, Operator'S Manual

Page: 187 / 218

Cleaning and maintenance | iTernIS ADV
16. 5
WARNING
• Completely dismantle the expiratory set for
cleaning.
• A delicate transparent membrane is found
within the pneumotachograph, incorporated
into the expiratory set. This must not be da -
maged in order for the expiratory flow and
volume measurements to be correct.
Fig. 16-2 Illustrations of the expiratory set. Left, front view
of the set. Right, view of a frontal section of the set. The let-
ter A indicates the position of the diaphragm, and the letter B
indicates the position of the inner membrane found between
the connectors linked to P2 and P1.
The expiratory set is autoclavable. It supports 50 autoclaving cycles if the following
parameters are selected: 20 minutes at 121 °C - 2 hours; or 15 minutes at 134 °C
- 1.5 hours.
The components will be in proper working condition once they have been duly
cleaned and sterilized. Pay particular attention to the assembly of all parts of the
patient circuit, specially, to the expiratory set. The diaphragm of the set must be
assembled correctly in order to function properly. For lingering doubts, please refer
to the chapter
Assembly and Installation
.
WARNING
• Always use authentic diaphragms. Non-
authentic diaphragms may cause the mal -
function of the expiratory valve while jam -
ming the expiratory pathway.
• The positioning of the diaphragm onto the
expiratory set is very important for the pro -
per functioning of the ventilator. Ensure that
it is properly adjusted.
16.2 | Assembly of the
Patient Circuit