Tecme NEUMOVENT, Техническое руководство

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TECHNICAL AND MAINTENANCE MANUAL
Graph VENTILATOR
Review : 04
Date: 09/05/06
25
Universal Voltage
: The power source is self-regulated for alternate current from 100
to 240 volts.
Automatic Zero Reset
: The pressure transducers are zeroed every 15 minutes or
when the operator activates this function ([Ctrl] + [Ptr-Vtr]).
Line Purge
: In order to avoid any obstruction of and/or humidity in the internal
transducers, air is injected through the tubes connecting the expiratory
pneumotachograph at reset.
Operative System
The operative system, which regulates the functions of the microprocessor, is designed with
algorithms that prevent or avoid the execution of any maneuver that may have unfavorable
effects.
Memory test:
Every time the equipment is turned on, a test of the RAM and EPROM
memories is run, thus ensuring the integrity of the operative system.
PEEP and Flow Calibration:
Every time the equipment is turned on, the expiratory
valve is electronically calibrated to regulate the positive end expiratory pressure.
There is also a calibration of the flows that go through the expiratory
pneumotachograph.
Parameter limits:
Every parameter involved in the ventilation has minimum and
maximum limits that cannot be exceeded.
Values acceptance
: All selected or changed values need to be accepted by pressing
[Enter], within a maximum time of 5 seconds.
Alarm limits
: Each alarm has preset or programmed limits. When they are exceeded,
in some cases the action is instantaneously suppressed (e.g.: maximum pressure
limit) or in other cases, there is activation delay time (e.g. PEEP loss), depending on
the alarm hierarchy.
Alarm activation indicators
: When an alarm is activated, there is not only a light and
auditory signal but also the screen shows a message indicating the name of the
activated alarm, the possible cause and suggestions for the solution of the problem.
Watchdog:
The watchdog is an independent system of surveillance of the function of
the electronic circuit.