Service manual

2
Servo Ventilator 300/300A Description of functions
E382 E380E 061 01 03 01 Siemens-Elema AB 67
10 Inspiratory valve unit –
Optional
If the third valve slot is not used for equip-
ment for e. g. NO gas administration or
nebulizing drugs, a valve dummy without
valve function must be mounted in the third
valve slot on the ventilator.
It contains one electronic board PC 1634
DUMMY VALVE CONNECTION. It responds internally
as a 8.8 VALVE CODE TRANSPONDER indicating
that this valve function is not available.
It is also provided with a mechanical code.
See 8.9 INSPIRATORY VALVE KEY.
As mentioned above, the valve dummy can
be replaced by an inspiratory valve for
administration of e. g. NO gas or by equip-
ment for nebulizing drugs (Servo Ultra
Nebulizer 345). These products are
described in separate documents.
9 Inspiratory valve unit – O
2
The INSPIRATORY VALVE UNIT – O
2
works in the
same way as the 8 INSPIRATORY VALVE UNIT – AIR.
The Description of functions is valid for both
types of inspiratory valve units.
There are, however, some differences in the
design of the different valve units:
• The electrical code that states the valve
unit type, see 8.8 VALVE CODE TRANSPONDER
• The mechanical code that states the valve
unit type, see 8.9 INSPIRATORY VALVE KEY
• A strapping on PC 1602 to change the
linearization, see 8.15 FLOW CALCULATOR
• A different inlet nipple, see 9.1 O
2
INLET.
9.1 O
2
inlet
The O
2
inlet nipple is a quick-coupling where
O
2
is connected to the ventilator. The design
of the O
2
inlet nipple and the colour marking
ring varies according to the standard
chosen.
A non-return valve for the O
2
inlet is located
in the bacteria filter cover, see 8.2 BACTERIA
FILTER
.