GE Aestiva 5 Service Manual

							7 Theory of Operation and Specifications 
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Pneumatic specifications
Gas suppliesPipeline gases: O2, Air, N2O
Cylinder gases: CO
2, Heliox, O2, N2O, Air (maximum: 2 cylinders of each gas; 4 cylinders 
total on narrow models; 5 cylinders total on the wide model.
Cylinder connections: Pin indexed (all gases); nut and gland DIN 477 (O
2, N2O, Air); large 
cylinder kit available for O
2 and N2O.
Primary regulator output pressure:
• With a rear panel label:
The primary regulator is set to pressure less than 345 kPa.
The primary regulator is set to pressure less than 414 kPa.
•Without a rear panel label: approximately 587- 690 kPa 
 Pressure relief valve: approximately 883 kPa.
Pipeline connections (filtered): DISS-Male; DISS-Female; DIN 13252; AS 4059 (Australian); 
F90-116 (French Air Liquide); CEN (QPREN 737-6); or NIST (ISO 5359). All fittings available for 
O
2, Air, and N
2O.
Pressure displays: Color coded gauges
Pneumatic outlet: O
2 DISS or Mini Schrader connections
Common gas
outlet reliefValve limits fresh gas to 138 kPa at the flush flow.
< 345 kPa
< 414 kPa
034.5 69.0 103.5 138 172.5 207 241.5 276
Outlet Pressure (kPa) 130
120
110
100
90
80
70
60
50
40
30
20
10
Flow
(L/min)DISS Power Outlet
ISO Power Outlet
Inlet pressure constant
at 241.5 kPa
  
						

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Flow specifications
Flow rates
 Minimum O
2 flow: 25 to 75 mL/min
Accuracy
At 20°C with gas supply pressures at 345 kPa and an outlet pressure of 101.3 kPa 
(absolute) flowmeter accuracy agrees with VDE 3513 Part 3, Accuracy Class 2.5 or 
better.
Different breathing circuit pressures, barometric pressures or temperatures change the 
accuracy. With some conditions, these changes can be larger than the tolerances.
Flush flow
35-50 L/min
O
2 supply failure alarm and shutoffGas Flow Range Scale (One 
Flow Tube)Scale (Two Flow Tubes)
O
20.05-15 L/min ------------------ 0.05 -0.95 L/min
1-15 L/min
N
2O
0-10 L/min1------------------ 0.05 -0.95 L/min
1-10 L/min
Air 0-15 L/min 1-15 L/min 0.05 -0.95 L/min
1-15 L/min
He 0-15 L/min 0.5-15 L/min ------------------
CO
20-0.5 L/min 0.05-0.5 L/min ------------------
1.The link system sets the nominal O2 flow at 25% of the total O2 and N2O flow.
O2 Pressure
O
2 supply failure alarm193 to 221 kPa 
N
2O shutoff3.5 kPa
CO
2 or Heliox shutoff69 kPa 
						

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Electrical power
Supply voltage
100-120 or 220-240 Vac ± 10% at 50 or 60 Hz
Electrical circuit breakers
Inlet circuit breakers:
Master circuit breaker-all outlets: 
Outlet circuit breakers:
Circuit Breaker for Tec 6 Outlet (limited by master circuit breaker)
System leakage current limit - do not exceed
UL and CSA rated systems (USA and Canada) 
						

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Power cord
Electrical Fuses
T6.3L/250V
Battery
InformationA sealed lead acid battery supplies battery backup for the Aestiva. The Aestiva is not a 
portable unit. Batteries are used as back up power in case of a power failure. Thus the 
battery is in a float charge state most of the time. Batteries meet the following:
1. Capacity to operate for 30 minutes.
2. Unit functions to specifications through the transition to battery power.
3. Long float charge life.
4. Battery pack is internally fused - in line replaceable.
5. Battery terminals and connecting wires are protected against short circuits.
Only Datex-Ohmeda service representatives are to replace the battery. Batteries must 
be disposed of in accordance with applicable regulatory requirements in effect at the 
time and place of disposal.
Electro-magnetic
Compatibility
Environment Suitable for use in the EM environment described in   EN 60601-1-2
Immunity Levels The Aestiva complies with the requirements of EN 60601-1-2 
(Electromagnetic Compatibility - Requirements and tests). The following basic EMC 
standards were applied to verify conformance.
Emissions    
CISPR    
11 Group 1 (EN 55011)
Immunity
IEC 801-2, 8 kV air, 3 kV contact
IEC 801-3, 3 V/m
IEC 801-4, 2 kV power line
IEC 801-5, 2 kV line to earth, 1 kV line to lineLength 5 meters
Voltage rating 125 to 264Vac at 10A, by country and/or translation
Current Carrying Capacity 10A
Type Three conductor medical grade power supply cord by 
country and/or translation 
						

							7 Theory of Operation and Specifications 
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Physical specifications
All specifications are approximate values and can change without notice.
Weight2 vaporizer system: 136 kg
3 vaporizer system: 154 kg
Dimensions2 vaporizer system
Height: 135.8 cm
Width: 75.0 cm
Depth: 83.0 cm
Shelves:
Number: 0, 1, or 2 
Size: 47.5 x 35 cm or 67.5 x 35 cm 
Usable height (2 shelves)
1: 26 or 36 cm
Weight limit: 23 kg per shelf
3 vaporizer system
Height: 135.8 cm
Width: 93.0 cm
Depth: 83.0 cm
Shelves:
Number: 0, 1, or 2 
Size bottom shelf: 87.5 x 35 cm or 67.5 x 35 cm
Size top shelf: 47.5 x 35 cm or 67.5 x 35 cm 
Usable height (2 shelves)
2: 26 or 36 cm
Weight Limit: 23 kg per shelf
 Casters12.5 cm with brakes on the front casters
DrawersOptional: 14.5 x 38.5 x 26.0 cm 
Standard drawer: 10.5 x 38.5 x 26 cm 
Ventilator display7.6 x 15.2 cm 
1.Flat or 10° angle shelves have the same usable height.2.Flat or 10° angle shelves have the same usable height. 
						

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Environmental requirements
Temperature
Humidity
Altitude
Operation 10 to 40 °C, (Oxygen cell operates to 
specifications at 10 to 40 °C)
Storage -20 to 70 °C
Oxygen cell storage is -5 to 50°C, 10 to 95% 
Rh, 500 to 800 mmHg
Operation 15 to 95% Rh, non-condensing
Storage 10 to 100% Rh, include condensing
Operation 500 to 800 mmHg (3565 to -440 meters)
Storage 375 to 800 mmHg (5860 to -440 meters)
Compensation range 525 to 795 mmHg (3,000 to -100 meters) 
						

							7 Theory of Operation and Specifications 
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Ventilation operating specifications
Pneumatics
Fresh gas
compensation
Pressure
Volume
Gas Source Anesthesia System
Gas Composition Medical Air or O
2 
Nominal Supply Pressure 350 kPa 
Pressure Range at Inlet 240 to 700 kPa 
Peak Gas Flow 120 L/m at 240 kPa, 0.75 seconds
Continuous Gas Flow 80 L/m at 240 kPa
Flow valve range 1 to 120 L/min at 240kPa.
Flow Compensation Range 200 mL/min to 15 L/min
Gas Composition O
2, N2O, N2 Air, Heliox, CO2 Anesthetic 
Agents
Patient airway pressure range -20 to +120 cmH2O +/-2 cmH2O
High pressure alarm set range 12 to 100 cmH
2O, 1 cm increment
Sustained pressure alarm 
range6 to 30 cmH
2O, 1 cm increment
Display range -20 to 120 cmH
2O
Tidal volume display range 0 to 9999 mL, 1 mL resolution
Setting range 20 to 1500 mL
Minute volume 0.0 to 99.9 liters, 0.1 liter resolution
Breath rate 4 to 100 bpm (breaths per minute), 
1 bpm resolution
Volume sensor type Variable flow orifice 
						

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Oxygen
Display range 8 to 100% O2
Display resolution 1% increments
Sensor type Galvanic fuel cell
Measurement range 0 to 100% O
2
Measurement accuracy Better than ± 3% of full scale
Cell response time
35 seconds
1 
Low O
2 alarm range 18% to 99%
High O
2 alarm setting 21% to 99% or Off
Note:    
Low O
2 limit may not be set above 
the high O
2 limit, nor may the high O2 
limit be set below the low O
2 limit.
Expected cell life Four months of shelf life (23 °C room 
air) and one year of normal operation.
1.Response time of cell and adapter as measured using the test method described in ISO 
7767 (1988-12-15), clause 50.9 
						

							7 Theory of Operation and Specifications 
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Aestiva ventilator accuracy data
The following accuracy data are based on patient conditions and settings described in 
ASTM F1101. The ventilator is assumed to be operating in volume mode (Heliox Off). For 
the following to be true, the ventilator is operating with 100 percent oxygen in the 
breathing system; or, it is connected to an anesthesia gas analyzer. If the ventilator is 
operating without being connected to an anesthesia gas analyzer, additional errors are 
described in the gas composition chart, Figure 8-9.
NN N N
oo o o
ttt t
ee e e
::: :
    
Gas composition errors may be in addition to the above normalized accuracy. When adding 
errors, positive errors can have the effect of nulling out negative errors.
NN N N
oo o o
ttt t
ee e e
::: :
    
Use of anesthetic agent could affect the errors by approximately -0.95%/% volume agent in 
normal mode and roughly -2.5%/% volume agent in Heliox mode. 
Volume delivery 
accuracy > 210 mL tidal volume - accuracy better than 7%
< 210 mL tidal volume - accuracy better than 15 mL
< 60 mL  tidal volume  - accuracy better than 10 mL
Volume monitoring 
accuracy > 210 mL tidal volume - accuracy better than 9%
< 210 mL tidal volume - accuracy better than 18 mL
< 60 mL tidal volume - accuracy better than 10 mL
Inspiratory pressure 
delivery accuracygreater of ±10% or ±3 cmH
2O
PEEP delivery accuracy±1.5 cmH
2O
Pressure monitoring 
accuracygreater of ±5% or ±2 cmH
2O 
						

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Figure 7-9 • Gas Composition Related Errors (both modes)
Heliox modeThe effect on volume delivery and monitoring accuracies of Heliox mixtures is within +8% 
to -15% when operating the Aestiva Ventilator in the Heliox mode.
Open loop mode volume delivery accuracy: ±10% of the set value under the following 
conditions:
1. Accuracy evaluated at the ventilator outlet.
2. This is not a normal operating mode. The ventilator is operating in an irregular 
condition.