Dräger Medical Fabius GS Operating manual

5330.500
9036095
Revision 3.0
Because you care
Emergency Care • Perioperative Care • Critical Care • Perinatal Care • Home Care
Technical Service Manual
Fabius GS
Inhalation Anesthesia Machine

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K5330500IECIVZ.fm 10.11.05
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Contents
General
1Notes 3
1.1 Symbols and Definitions ......................................................................................................... 4
Function Description
1General Information about the Fabius GS 7
2Function diagram of Fabius GS 12
3Battery backup 14
4Fabius GS piping diagram 14
5Function description of gas box 15
6SORC (Sensitive Oxygen Ratio Controller) 16
7Cosy 2 breathing system 18
7.1 Ventilation mode ................................................................................................................... 22
7.2 Function description: Manual ventilation .............................................................................. 23
7.3 Function description: Spontaneous breathing ...................................................................... 27
7.4 Function description: Volume/pressure control ventilation mode ......................................... 31
7.5 Cosy 2 absorber ................................................................................................................... 35
8Ventilator 35
8.1 Safety valve .......................................................................................................................... 38
8.2 Auxiliary air valve ................................................................................................................. 38
9Pneumatics 39
9.1 PEEP/Pmax valve control .................................................................................................... 39
9.2 APL bypass valve control ..................................................................................................... 40

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K5330500IECIVZ.fm 10.11.05
II
Contents
10 Electrical block diagram 41
11 Function description: Control PCB 41
12 Control panel assembly 42
13 FiO2 Measurement 44
14 Respiratory Flow Measurement 45
15 Gas flow rate measurement 46
16 Anesthetic vaporizer(s) 47
17 Leak test 49
17.1 System leak test ................................................................................................................... 49
17.2 Patient leak test .................................................................................................................... 49
Annex
Parts catalog
Technical Information

1
General

2

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Fabius GS General
1Notes This Technical Documentation conforms to the IEC 60601-1 standard.
Read each step in every procedure thoroughly before beginning any test.
Always use the proper tools and specified test equipment. If you deviate from
the instructions and/or recommendations in this Technical Documentation,
the equipment may operate improperly or unsafely, or the equipment could
be damaged.
Use only original Dräger parts and supplies.
The maintenance procedures described in this Technical Documentation may
be performed by qualified service personnel only. These maintenance
procedures do not replace inspections and servicing by the manufacturer.
The information in this manual is confidential and may not be disclosed to
third parties without the prior written consent of the manufacturer.
Strictly follow the Instructions for Use manual / Operating
Instructions! This Technical Documentation does not replace the
Instructions for Use manual / Operating Instructions. Any use of the
product requires full understanding and strict observation of the
product-specific Instructions for Use manual/ Operating Instructions.
Reference is hereby made to the observance of the relevant safety
provisions, for example in Germany, the Medical Product Law (MPG), the
Medical Device Operator Ordinance (MPBetreibV), the Pressure Container
Ordinance (Druckbehälterverordnung), the Technical Rules for Pressurized
Gases (Technische Regeln Druckgase), or the Occupational Health and
Safety Provisions (Unfallverhütungsvorschriften).
Unless otherwise stated, reference is made to laws, regulations or
standards (as amended) applicable in the Federal Republic of Germany.
Follow the laws and regulations applicable in your country.

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45330.500
General Fabius GS
1.1 Symbols and
Definitions
This symbol indicates a warning.
This symbol indicates tips and useful information.
This symbol is used to alert against unsafe practices when handling
electrostatic sensitive devices (ESD).
Definitions according to German standard DIN 31051:
Inspection = examination of actual condition
Maintenance = measures to maintain specified condition
Repair = measures to restore specified condition
Servicing = inspection, maintenance, and repair

5
Function Description

6

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Fabius GS Function description
1 General Information
about the Fabius GS
The Fabius GS comprises the following assemblies:
– Display and Control Panel
– Flowmeter assembly
– Gas box: Gas Inlet Assembly and related items
– Breathing system
– Pneumatic assembly
– Ventilator
– Vaporizers
– Trolley
Monitoring, electrical connections and gas connections as shown in Figure 1,
Figure 2,Figure 3, and Figure 4.
Figure 1 Front view of Fabius GS anesthesia system, for legend see Table
1

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Function description Fabius GS
Table 1 Legend to Figure 1
No. Name
1 Trolley
2 O2 flush
3 Cosy 2 breathing system
4 Ventilator
5 Oxygen flowmeter (auxiliary)
6 Display
7 Control panel
8 Vaporizers
9 Cylinder Pressure Gauges
10 Pipeline Pressure Gauges
11 Flow Control Valves
12 Total fresh gas flowmeter

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Fabius GS Function description
Figure 2 Rear view showing interface panel and power entry, for legend
see Table 2
Table 2 Legend to Figure 2
No. Name
1 Serial communication ports (only one is shown)
2 Tube connection for PEEP valve
3 Tube connection for APL bypass valve
4 O2 sensor connection
5 Airway pressure connection
6 Spirolog sensor connection
7 Power entry
8 Cover for power fuses (2x 2.5 A)

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Function description Fabius GS
Figure 3 Rear view showing gas pipeline and PIN index cylinder connec-
tions, for legend see Ta b le 3
Table 3 Legend to Figure 3
9 ON/OFF switch
10 Battery fuse
No. Name
1 Pipeline tube connections
2 N2O or AIR PIN index cylinder connections
3 O2 PIN index cylinder connection
4 O2 PIN index cylinder connection
No. Name

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Fabius GS Function description
Figure 4 Rear view showing gas pipeline and cylinder connections (units
without PIN index cylinder connections), for legend see Table 4
Table 4 Legend to Figure 4
No. Name
1 Pipeline tube connections
2 N2O cylinder connection
3 O2 cylinder connection

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12 5330.500
Function description Fabius GS
2 Function diagram of
Fabius GS
Figure 5 Function diagram of Fabius GS - Cosy 2 breathing system

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Fabius GS Function description
Figure 6 Function diagram of Fabius GS - Cosy 2.5 (2.6) breathing system

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Function description Fabius GS
3 Battery backup Fabius GS backup power is provided by two series-connected 12 V recharge-
able batteries. These batteries remain on charge as long as the machine is
plugged into an active AC outlet. Should power supply fail while the machine
is in operation, the batteries will allow the machine to continue operating for a
minimum of 45 minutes, provided that the batteries are fully charged.
The batteries are accessible by opening the ventilator compartment. The
3.15A battery fuse is located at the back of the control box.
Figure 7 Battery backup arrangement
4 Fabius GS piping
diagram
Figure 8 Fabius GS piping diagram

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Fabius GS Function description
5 Function descrip-
tion of gas box
The supply gases flow through the filters and non-return valves in the gas
inlet assembly. Pipeline supply pressures are indicated on pipeline pressure
gauges located on the flowmeter assembly. Cylinder pressure gauges are
located on the trolley assembly. The pressures of O2 and N2O delivered to
the flowmeter assembly are set by regulators on the gas inlet assembly.
Should the O2 supply fail or if its pressure decrease below a certain limit, the
O2 low alarm switch signals an alarm.
Figure 9 Gas box function diagram, part 1
If the O2 flush button is pressed, oxygen is delivered to the fresh-gas outlet.
The fresh-gas ejector prevents the fresh gas from flowing back into the anes-
thetic vaporizer. This avoids an increase in the anesthetic gas concentration.

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Function description Fabius GS
Figure 10 Gas box function diagram, part 2
6 SORC (Sensitive
Oxygen Ratio Con-
troller)
The SORC is a control element that functions like an N2O shut-off device and
ensures a vital O2 concentration in the fresh gas. In the event of an O2 short-
age, the SORC limits the N2O flow such that the O2 concentration in the
fresh gas does not decrease below 21 vol.%.
If the O2 flow control valve is closed or if the O2 flow is lower than or equal to
200 mL/min, the SORC interrupts the N2O flow.
N2O can be added as of an O2 flow of approx. 300 mL/min. In this case, the
SORC also prevents O2 concentrations below 21 vol.%.
The SORC bypass allows O2 to bypass the restrictor in the SORC when O2
flows above 10 L/min are needed.