Pneumatics - Weinmann MEDUMAT Basic Servicing And Repair Instructions

9.1 Pneumatics

p
input pressure
2.7 - 6 bar
pressure regulator
frequency regulator
P/E converter
A/D converter
evaluation electronics
The input pressure at is max. 6 bar. This is reduced by
p
and .
V2 V3
Inspiration/No Air Mix
Valve rocker is opened and switches over
V6
ygen flows through into injector unit
V5
patient valve rises above 100 mbar, the relief valve
Inspiration/Air Mix
Valve rocker is closed. This closes
V6
. The air-oxygen mixture flows to the patient valve.
V7
Expiration/Air Mix or No Air Mix
Another electrical impulse closes
out through the patient valve.
Patient valve
The respiratory gas flows into the patient's airways during in-
spiration. The expiratory pressure then switches the valve over
and enables the patient to breathe out.
54
Technical data
V2
exp.-insp.
V1
manometer
injector unit
patient
valve
P/E converter
relief valve
V6
valve rocker
V1
. An electrical impulse to
V7
and onwards to the patient valve. If the ventilation pressure in the
V9
will open.
V8
. O flows into injector unit
V7
2
. Exhaust valve opens and exhausts injector unit
V2 V4
V3
amplifier valve
V4
exhaust valve
V9
V8
non-return valve
V7
air mix valve
air inlet
to 2.7 bar dyn. This is the input pressure at
opens
V2
through and sucks in air through
V9 V5
V9
Patient
Inspiration
Medumat
V5
regulator valve
,
V6
and closes . Ox-
V3 V4
. The patient breathes
Inspiration
Expiration
Expiration