Service manual

Servo Ventilator 300/300A Description of functions
E382 E380E 061 01 03 01 Siemens-Elema AB 37
2
4.1.4 Exp. minute volume
PMA: Exp. min. vol. = signal from the block 4.4 FLOW FILTERS & INTEGRATORS.
Reference value M
max
= Preset Upper alarm limit for Expired minute volume
Reference value M
min
= {The highest of the following two possibilities:}
= Preset Lower alarm limit for Expired minute volume or
= Lowest value for normal (digital) alarm; value according to table in 1.1. Patient range
selection.
Alarm table:
1
Identical condition is also monitored separately within the main block 2 PANEL INTERFACE and
that is used for the following function: At true condition the Minute volume bargraph
indication for Upper alarm limit is flashing.
2
Identical condition is also monitored separately within main the block 2 PANEL INTERFACE and
that is used for the following function: At true condition the Airway pressure bargraph
indication for Lower alarm limit is flashing.
For Exp. minute volume alarm also see 4.5 BACKUP ALARM SYSTEM.
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4.1.5 Apnea
PMA: The measured time durations T
C
corresponding to Breath cycle.
T
C
= Time duration measured from each Start Inspiration until next Start Inspiration.
Reference value T
d
= {Apnea alarm delay time}, Value according to table in block 1.1 PATIENT
RANGE
SELECTION.
Alarm table:
If the Mode selector is in position VS and Apnea alarm is active the ventilator performs
PRVC Mode. See 6.1.2. RESPIRATORY TIMING ”condition (A)”.
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